Masterbatch Advanced Twin-Screw Extrusion Technology Applications and Comprehensive Processing Solutions

1. Overview of Masterbatch Industry and Core Knowledge

1.1 Current Situation and Development Trend of Masterbatch Industry

Masterbatch, also known as color masterbatch or color concentrate, is a new type of plastic coloring material with high concentration, high dispersibility and convenient use. It is made by uniformly dispersing pigments or dyes, carriers and additives in a specific proportion through professional mixing and extrusion granulation technology. Compared with the traditional direct coloring method (directly adding pigments to plastic raw materials), masterbatch has the advantages of convenient use, uniform coloring, stabil ydeevne, environmental protection and energy saving, som gradvist har erstattet den traditionelle farvemetode og er blevet den almindelige farveløsning i plastindustrien.

I de senere år, drevet af den hurtige udvikling af downstream-industrier såsom emballage, bilindustrien, tekstiler, elektronik, bygge- og husholdningsapparater, det globale masterbatch-marked har vist en stabil og hurtig væksttendens. Ifølge relevante branchedata, den globale masterbatch-markedsstørrelse er overskredet 30 milliarder amerikanske dollars, og det forventes at opretholde en sammensat årlig vækstrate på 6%-8% i de næste fem år. Blandt dem, Asia-Pacific er verdens største masterbatch-produktion og -forbrugsmarked, står for mere end 60% af den globale markedsandel, primært på grund af den hurtige udvikling af plastindustrien i Kina, Indien og andre lande, den løbende forbedring af industriel støttekapacitet, og den stigende efterspørgsel efter høj kvalitet, funktionelle og miljøvenlige masterbatch-produkter.

Kina, som verdens største masterbatch producent og forbruger, har en enorm markedsefterspørgsel og en komplet industrikæde. Den årlige produktion og forbrug af masterbatch vokser med et tocifret tempo, især inden for nye energikøretøjer, grøn emballage, avancerede tekstiler og medicinsk udstyr, efterspørgslen efter højtydende masterbatch (såsom højtemperaturbestandig masterbatch, flammehæmmende masterbatch, miljøbeskyttelse masterbatch) viser en eksplosiv væksttendens. Med den løbende forbedring af globale miljøbeskyttelsespolitikker (såsom forbuddet mod giftige og skadelige pigmenter) and the upgrading of consumer demand for high-quality plastic products, the masterbatch industry is gradually developing towards high concentration, high dispersibility, funktionalisering, environmental protection and intelligence.

The main development trends of the masterbatch industry are reflected in four aspects: først, environmental protection and low toxicity. With the strengthening of environmental protection awareness and the strictness of environmental protection policies, non-toxic, harmless, low-volatile and degradable environmental protection masterbatch will become the mainstream of the market, and toxic and harmful pigments (such as heavy metal pigments) will be gradually eliminated; anden, funktionalisering. In addition to coloring, masterbatch is also developing towards functional integration, such as flame-retardant masterbatch, antistatic masterbatch, antibacterial masterbatch, UV-resistant masterbatch, which can meet the special use requirements of downstream products; tredje, high concentration and high dispersibility. High-concentration masterbatch can reduce the addition amount, reduce production costs, and high dispersibility can ensure uniform coloring of plastic products, avoid color spots and color difference, which is the key to improving product quality; fjerde, intelligence and automation of processing. Masterbatch processing requires strict control of mixing uniformity, temperature and other parameters. Intelligent, automatic twin-screw extrusion production lines will become the mainstream, realizing real-time monitoring, automatic parameter adjustment and mass production, improving production efficiency and product consistency.

As the core processing equipment of masterbatch, dobbeltskrueekstrudere spiller en afgørende rolle i udviklingen af ​​masterbatch-industrien. Masterbatch-blanding har strenge krav til blandings- og dispergeringseffekten, temperaturkontrol og produktionseffektivitet af ekstrudere. Zhuoyues fulde serie af ekstrudere (HTS BASIC/PLUS/SUPER, ZTE, HTE) er specielt designet til masterbatch-behandling, med målrettede præstationsfordele, som effektivt kan opfylde forarbejdningsbehovene for forskellige typer masterbatch og hjælpe producenter med at forbedre produktkvaliteten og produktionseffektiviteten.

1.2 Kernesammensætning og arbejdsprincip for Masterbatch

Masterbatch er sammensat af tre grundlæggende elementer: pigmenter eller farvestoffer, bærere og tilsætningsstoffer. Andelen og ydeevnen af ​​hvert element bestemmer direkte kvaliteten og brugseffekten af ​​masterbatch. Understanding the core composition and working principle of masterbatch is the basis for mastering its processing technology and selecting appropriate extrusion equipment.

1.2.1 Pigments or Dyes: The Core Coloring Component

Pigments or dyes are the core components that give masterbatch coloring performance, accounting for 10%-80% of the masterbatch composition (the specific proportion depends on the type of pigment, coloring requirements and masterbatch concentration). Pigments are divided into organic pigments and inorganic pigments: organic pigments have bright colors, high tinting strength, god gennemsigtighed, but poor heat resistance and weather resistance, mainly used in low-temperature processing plastics (såsom PE, PP) and products with high color requirements (such as textiles, packaging films); inorganic pigments have good heat resistance, vejrbestandighed og kemisk stabilitet, men lav farvestyrke og dårlig gennemsigtighed, hovedsagelig brugt i højtemperaturforarbejdning af plast (såsom ingeniørplast) og udendørs produkter (såsom byggematerialer, automotive udvendige dele).

Farvestoffer er forskellige fra pigmenter. Farvestoffer har god opløselighed i plastråmaterialer, lyse farver og høj gennemsigtighed, men dårlig varmemodstand og lysmodstand, anvendes hovedsageligt i gennemsigtige plastprodukter (såsom PET-flasker, PC ark). Udvælgelsen af ​​pigmenter eller farvestoffer bør baseres på typen af ​​plastråmaterialer (forarbejdningstemperatur), miljø for produktbrug (indendørs/udendørs), krav til farve (farve lysstyrke, gennemsigtighed) og miljøbeskyttelseskrav, for at sikre, at masterbatchen har stabil farveydeevne og opfylder brugskravene for downstream-produkter.

1.2.2 Transportører: The Dispersion and Adhesion Component

Carriers are the matrix of masterbatch, accounting for 10%-80% of the masterbatch composition, mainly playing the role of dispersing pigments/dyes and adhering to plastic raw materials. The carrier must have good compatibility with both pigments/dyes and the target plastic raw materials (the plastic raw materials to be colored), otherwise it will affect the dispersibility of pigments and the coloring effect of products. Common carrier materials include polyethylene (PE), polypropylen (PP), polyvinylchlorid (PVC), polyamide (PA), polyethylenterephthalat (KÆLEDYR), osv., which are selected according to the type of target plastic raw materials: f.eks, PE carrier is used for PE plastic coloring, PP carrier is used for PP plastic coloring, and PA carrier is used for engineering plastic PA coloring.

The carrier should also have good processing fluidity, som er befordrende for ensartet spredning af pigmenter under ekstruderingsbehandling og blanding af masterbatch med målplastråmaterialer. Desuden, smeltepunktet og forarbejdningstemperaturen for bæreren skal være i overensstemmelse med eller lidt lavere end den for målplastråvarerne, for at undgå nedbrydning af bæreren eller målplasten under behandlingen.

1.2.3 Tilsætningsstoffer: Den ekstra funktionelle komponent

Additiver er hjælpekomponenter tilsat for at forbedre forarbejdningsydelsen, dispergerbarhed og brugsydelse af masterbatch, accounting for 1%-10% of the masterbatch composition. Typen og doseringen af ​​tilsætningsstoffer bestemmes i henhold til typen af ​​masterbatch og forarbejdningskrav. Almindelige tilsætningsstoffer omfatter:

• Dispergeringsmidler: Det vigtigste tilsætningsstof i masterbatch, som kan reducere overfladespændingen af ​​pigmenter, forhindre pigmentagglomeration, and make pigments uniformly dispersed in the carrier. Common dispersants include polyethylene wax, polypropylene wax, stearic acid, calcium stearate, osv. The addition of dispersants can significantly improve the dispersibility of masterbatch, ensure uniform coloring of products, and reduce the wear of extrusion equipment.
• Compatibilizers: Used to improve the compatibility between pigments and carriers, and between masterbatch and target plastic raw materials. F.eks, when the carrier and target plastic have poor compatibility (such as PE carrier and PA plastic), kompatibilisatorer (such as maleic anhydride grafted polyethylene) can be added to enhance the bonding force between them, avoid the separation of masterbatch and target plastic during processing, and improve the mechanical properties of products.
• Heat Stabilizers: Used to prevent the decomposition of pigments, carriers and target plastics during high-temperature extrusion processing. Common heat stabilizers include lead salts, calcium-zinc stabilizers, organic tin stabilizers, osv., which are selected according to the processing temperature and environmental protection requirements.
• Light Stabilizers and Antioxidants: Used to improve the weather resistance and aging resistance of masterbatch and colored plastic products, prevent the color fading and performance degradation of products under sunlight and oxygen, and extend the service life of products.
• Lubricants: Used to reduce the friction between materials and extrusion equipment (skrue, tønde, dø hovedet), improve processing fluidity, reduce energy consumption, and avoid material sticking to equipment, which is conducive to the smooth progress of extrusion processing.

1.2.4 Working Principle of Masterbatch

Arbejdsprincippet for masterbatch er baseret på den ensartede spredning af højkoncentrationspigmenter i bæreren. Under forarbejdning af plastprodukter, en lille mængde masterbatch (som regel 1%-5%) er blandet med ufarvede plastikråvarer. Under påvirkning af høj temperatur og forskydningskraft under ekstrudering eller sprøjtestøbning, bæreren af ​​masterbatchen smelter og blandes med målplastråmaterialerne, og de ensartet dispergerede pigmenter frigives og fordeles ensartet i målplastmatricen, dermed opnå formålet med at farve plastprodukter. Nøglen til denne proces er, at pigmenterne i masterbatchen skal være ensartet fordelt uden agglomerering, ellers vil det forårsage farvepletter, farveforskel og andre fejl i de farvede produkter.

1.3 Common Classification of Masterbatch

Masterbatch can be divided into different types according to different classification standards, such as coloring type, carrier type, application field, functional type, osv. The correct classification helps to better understand the performance characteristics and processing requirements of masterbatch, and select appropriate extrusion equipment and processing techniques.

1.3.1 Classification by Coloring Type

According to the type of coloring component, masterbatch can be divided into color masterbatch, white masterbatch and black masterbatch.

• Farve Masterbatch: The most common type of masterbatch, which uses organic or inorganic pigments of various colors (such as red, yellow, blue, green, orange) as coloring components, and is used for coloring plastic products of various colors. The tinting strength, color brightness and dispersibility of color masterbatch are the key indicators to measure its quality.
• White Masterbatch: Using titanium dioxide (TiO2) as the main coloring component, it is used for whitening plastic products or as a base color for light-colored masterbatch. The whiteness, covering power and dispersibility of white masterbatch are the key indicators. Titanium dioxide has high hardness, which has high requirements on the wear resistance of extrusion equipment.
• Black Masterbatch: Using carbon black as the main coloring component, it is used for black coloring of plastic products. Carbon black has good UV resistance and weather resistance, and can also improve the mechanical properties of plastic products. The dispersibility of carbon black is the key to the quality of black masterbatch. Poor dispersibility will cause black spots and streaks in products.

1.3.2 Classification by Carrier Type

According to the type of carrier, masterbatch can be divided into PE masterbatch, PP masterbatch, PVC masterbatch, PA masterbatch, PET masterbatch, osv.

• PE Masterbatch: Using PE as the carrier, it is suitable for coloring PE plastic products (such as PE films, PE rør, PE injection molding parts). It has good compatibility with PE raw materials, good processing fluidity and uniform coloring.
• PP Masterbatch: Using PP as the carrier, it is suitable for coloring PP plastic products (such as PP fibers, PP injection molding parts, PP plader). It has good heat resistance and is suitable for high-temperature processing of PP.
• PVC Masterbatch: Using PVC as the carrier, it is suitable for coloring PVC plastic products (såsom PVC-rør, PVC profiler, PVC films). Det skal matches med PVC-varmestabilisatorer for at undgå PVC-nedbrydning under forarbejdning.
• Engineering Plastic Masterbatch: Brug af ingeniørplast (PA, PC, PBT, osv.) som transportører, den er velegnet til farvning af tekniske plastprodukter (såsom bildele, elektriske komponenter). Det har god varmebestandighed og kompatibilitet med ingeniørplast, og har høje krav til ekstruderingsudstyr.

1.3.3 Klassificering efter anvendelsesfelt

I henhold til anvendelsesområdet for masterbatch, det kan opdeles i fiber masterbatch, film masterbatch, blæsestøbning masterbatch, ekstruderingsmasterbatch, sprøjtestøbning masterbatch, osv., som svarer til de fem store anvendelsesområder for masterbatch.

• Fiber Masterbatch: Anvendes til farvning af kemiske fibre (såsom polyesterfiber, nylon fiber), som bruges i tæpper, tekstiler, puder og andre produkter. Det kræver høj spredningsevne og farveægthed, og ingen farve falmer under spinding og vævning.
• Film Masterbatch: Anvendes til farvning af plastfilm (såsom indkøbsposer, casting af film, flerlags film), som kræver høj gennemsigtighed og ensartet farve, og ingen farvepletter eller striber på filmoverfladen.
• Blæsestøbning Masterbatch: Anvendes til farvning af blæsestøbningsprodukter (såsom medicinske og kosmetiske beholdere, smøreolie og malingsbeholdere), hvilket kræver god forarbejdningsflydighed og ensartet farvning, og ingen deformation eller farveforskel af beholderen.
• Ekstrudering Masterbatch: Anvendes til farvning af ekstruderingsprodukter (såsom ark, rør, ledninger og kabler), som kræver god formstabilitet og ensartet farve, og ingen farveforskel på produktoverfladen.
• Sprøjtestøbning Masterbatch: Anvendes til farvning af sprøjtestøbningsprodukter (såsom bildele, electronic products, construction materials, home appliances, møbel, toys), which requires high dispersibility and stable performance, and no color difference between batches of products.

1.3.4 Classification by Functional Type

According to the additional functions of masterbatch, it can be divided into ordinary masterbatch (only coloring function) and functional masterbatch (coloring + additional functions). Functional masterbatch is the development trend of the industry, and common types include flame-retardant masterbatch, antistatic masterbatch, antibacterial masterbatch, UV-resistant masterbatch, toughening masterbatch, osv. Functional masterbatch requires adding corresponding functional additives on the basis of ordinary masterbatch, which has higher requirements on the mixing and dispersing effect of extrusion equipment.

2. Core Processing Technology of Masterbatch: Twin-Screw Extrusion Technology

Masterbatch processing mainly includes mixing, ekstrudering, afkøling, granulering og andre processer, blandt hvilke twin-screw ekstruderingsteknologi er kerneteknologien for masterbatch-blanding og granulering. Sammenlignet med enkeltskrue ekstruderingsteknologi, twin-screw ekstruderingsteknologi har fordelene ved stærk blande- og spredningskapacitet, præcis temperaturkontrol, kort opholdstid, høj produktionseffektivitet og stærk tilpasningsevne til råvarer, som effektivt kan løse nøgleproblemerne ved masterbatch-behandling (såsom pigmentagglomerering, ujævn blanding, lav produktionseffektivitet) og sikre kvaliteten af ​​masterbatch-produkter.

Masterbatch-blanding er en af ​​de vigtigste anvendelser af dobbeltskrue-ekstrudere. Kvaliteten af ​​masterbatch bestemmes direkte af ydeevnen af ​​dobbeltskrueekstruderen og rationaliteten af ​​forarbejdningsprocessen. Nøglekravene til masterbatch-behandling til dobbeltskrueekstrudere er: stærk blande- og spredningseffekt (for at sikre ensartet spredning af pigmenter), præcis temperaturkontrol (for at undgå pigmentnedbrydning og bærernedbrydning), passende forskydningskraft (at bryde pigmentagglomerater uden at beskadige pigmentpartikler), høj produktionseffektivitet (at imødekomme behov for masseproduktion) og god slidstyrke (at tilpasse sig sliddet af pigmenter med høj hårdhed som titaniumdioxid og kønrøg).

2.1 Behandlingsproblemer med masterbatch og krav til ekstruderingsudstyr

Selvom twin-screw ekstruderingsteknologi er velegnet til masterbatch-behandling, på grund af masterbatch-sammensætningens særlige karakter (højt pigmentindhold, let agglomerering af pigmenter) og behandlingskrav (ensartet spredning, stabil ydeevne), der er stadig mange vanskeligheder ved den faktiske behandling. The main processing difficulties and corresponding requirements for extrusion equipment are as follows:

2.1.1 Pigment Agglomeration and Poor Dispersibility

Pigments (especially inorganic pigments such as titanium dioxide and carbon black) have strong polarity and large specific surface area, which are easy to agglomerate into large particles during storage and mixing. If the agglomerates cannot be fully broken and dispersed during extrusion processing, the masterbatch will have poor dispersibility, and the colored plastic products will have color spots, color streaks and uneven coloring, which will seriously affect the product quality. This is the most common and key difficulty in masterbatch processing.

This requires the extrusion equipment to have strong mixing and dispersing capacity and appropriate shear force. The twin-screw extruder should adopt an intermeshing co-rotating structure, and the screw should be equipped with sufficient mixing elements and shearing elements to generate strong shear force and kneading force during rotation, which can fully break the pigment agglomerates and make the pigments uniformly dispersed in the carrier. Desuden, the screw speed and extrusion pressure should be adjustable to adapt to different types of pigments and masterbatch concentrations.

2.1.2 Pigment Decomposition and Carrier Degradation Caused by Overheating

Most pigments (especially organic pigments) have poor heat resistance, and the carrier (såsom PE, PP) also has a certain temperature resistance limit. If the extrusion temperature is too high or the residence time of the material in the extruder is too long, the pigment will decompose (resulting in color fading, discoloration), and the carrier will degrade (resulting in reduced mechanical properties of the masterbatch). This is another key difficulty in masterbatch processing.

This requires the extrusion equipment to have precise temperature control capacity and short residence time. The barrel of the extruder should be divided into multiple temperature control sections, and the temperature of each section should be precisely controlled within the optimal range (usually 150-220℃ for ordinary masterbatch, 200-280℃ for engineering plastic masterbatch), with a temperature control precision of ±1℃. The screw structure should be optimized to shorten the residence time of the material in the extruder (som regel 1-3 minutter), avoiding long-term contact between the material and high temperature.

2.1.3 Wear of Screw and Barrel Caused by High-Hardness Pigments

Inorganic pigments such as titanium dioxide and carbon black have high hardness (Mohs hardness 5-7), which will cause serious wear to the screw and barrel of the extruder during extrusion processing. If the screw and barrel have poor wear resistance, they will be worn quickly, resulting in reduced shear force and mixing capacity of the extruder, affecting the dispersibility of the masterbatch and reducing the service life of the equipment.

This requires the screw and barrel of the extruder to be made of high-quality wear-resistant materials and processed by advanced manufacturing technology. F.eks, the screw and barrel can be made of imported wear-resistant alloy steel, and undergo bimetallic composite treatment or laser cladding treatment, som i høj grad kan forbedre slidstyrken og korrosionsbestandigheden af ​​skruen og tønden, og tilpasse sig behandlingen af ​​masterbatch med pigmenter med høj hårdhed.

2.1.4 Ustabilitet af produktkvalitet mellem batches

Masterbatch-behandling kræver streng kontrol af forskellige parametre (såsom formelforhold, blandingstid, ekstruderingstemperatur, skruehastighed, fodringshastighed). Hvis parametrene svinger, kvaliteten af ​​masterbatchen (såsom koncentration, dispergerbarhed, farvestyrke) vil være ustabil, resulterer i farveforskel mellem partier af farvede produkter, hvilket vil påvirke producentens omdømme.

Dette kræver, at ekstruderingsudstyret har intelligent kontrolkapacitet og stabil ydeevne. Ekstruderen skal være udstyret med et PLC intelligent kontrolsystem, som kan realisere præcis kontrol af fodringshastigheden, skruehastighed, ekstruderingstemperatur og andre parametre, og gemme flere sæt af formelparametre. Ved fremstilling af forskellige batches af masterbatch, kun de tilsvarende parametre skal kaldes, undgå gentagen fejlretning, at sikre stabiliteten af ​​produktkvaliteten mellem batch.

2.1.5 Høje krav til procesfluiditet

Masterbatch har højt pigmentindhold, hvilket vil reducere materialets bearbejdningsfluiditet. Hvis forarbejdningsfluiditeten er for dårlig, materialet vil være svært at transportere og ekstrudere, resulterer i lav produktionseffektivitet, ustabilt ekstruderingstryk og jævn blokering af udstyr.

Dette kræver, at ekstruderingsudstyret har stærk transportkapacitet og justerbar forskydningskraft. Ekstruderen med to skruer bør anvende en rimelig skruestigning, bly og kompressionsforhold design, and the screw should be equipped with sufficient conveying elements to ensure the smooth conveying of materials. Desuden, the extrusion temperature can be appropriately adjusted to improve the processing fluidity of the material, and lubricants can be added to reduce the friction between materials.

2.2 Working Principle and Process Flow of Masterbatch Twin-Screw Extrusion

The twin-screw extrusion process of masterbatch is a complex physical mixing process, which mainly includes raw material pretreatment, premixing, feeding, smeltning, mixing and shearing, ekstrudering, afkøling, granulation, screening and packaging. The core purpose is to uniformly disperse pigments, carriers and additives to form high-quality masterbatch granules. The specific working principle and process flow are as follows:

2.2.1 Raw Material Pretreatment

Råmaterialeforbehandling er grundlaget for masterbatch-ekstruderingsbehandling, hvilket direkte påvirker blandingseffekten og produktkvaliteten. Råvarerne i masterbatch omfatter hovedsageligt pigmenter/farvestoffer, transportører, tilsætningsstoffer (dispergeringsmidler, kompatibilisatorer, varmestabilisatorer, osv.). Forbehandlingstrinene er som følger:

• Tørringsbehandling: Nogle pigmenter (såsom organiske pigmenter) og transportører (såsom PA, KÆLEDYR) har høj vandoptagelse. Hvis fugtindholdet er for højt, det vil forårsage bobler, agglomeration og andre defekter i masterbatchen under ekstruderingsbearbejdning, og endda forårsage hydrolytisk nedbrydning af bæreren. Derfor, råvarerne skal tørres inden forarbejdning. Tørretemperaturen og -tiden bestemmes i henhold til typen af ​​råmateriale: f.eks, organiske pigmenter tørres ved 60-80 ℃ til 2-4 timer, PE/PP-bærere tørres ved 80-100 ℃ for 3-5 timer, og PA-bærere tørres ved 100-120 ℃ for 6-8 timer. The moisture content of the dried raw materials should be controlled below 0.1%.
• Crushing and Sieving: For pigments with large particle size (such as titanium dioxide agglomerates) and carriers with uneven particle size, crushing and sieving treatment should be carried out to ensure the uniformity of raw materials. The particle size of the crushed raw materials should be controlled at 20-40 mesh, which is conducive to the uniform mixing of raw materials and the breaking of pigment agglomerates during extrusion.
• Impurity Removal: The raw materials may contain impurities (such as metal particles, stones, støv) during production and transportation. Impurities not only affect the quality of the masterbatch, men også slid ekstruderens skrue og cylinder, og endda forårsage blokering af udstyr. Derfor, råvarerne skal filtreres og fjernes inden brug, ved hjælp af en filtersigte med passende maskestørrelse for at fjerne urenheder.

2.2.2 Forblanding

Forblanding er nøgletrinet til at forbedre blandings- og dispergeringseffekten af ​​masterbatch. Ifølge formelforholdet, det tørrede, knuste og urenhedsfjernede pigmenter, bærere og additiver sættes i en højhastighedsblander til forblanding. Formålet med forblandingen er at få pigmenterne og tilsætningsstofferne ensartet til at klæbe til overfladen af ​​bærerpartiklerne, danne en foreløbig blanding, og lægge et fundament for den ensartede spredning under ekstrudering.

Nøgleparametrene for forblanding er blandingshastighed, blandetid og blandingstemperatur. Blandehastigheden er generelt 800-1200 rpm, blandetiden er 5-10 minutter, og blandingstemperaturen styres til 40-60 ℃. The appropriate mixing temperature can improve the adhesion of additives (såsom dispergeringsmidler) to the carrier and pigments, promoting uniform mixing. For masterbatch with high pigment content (som f.eks 50% over), the premixing time can be appropriately extended, and a small amount of dispersant can be added first to improve the dispersibility of pigments. After premixing, the mixture should be uniform in color, without obvious pigment agglomerates and additive particles.

2.2.3 Feeding and Conveying

The premixed mixture is sent to the feeding hopper of the twin-screw extruder through a screw feeder or a belt feeder. The feeding device of the extruder is usually equipped with a frequency conversion speed regulation function, which can adjust the feeding speed according to the screw speed and extrusion speed to ensure that the materials enter the extrusion cavity stably and uniformly, avoiding material accumulation or insufficient feeding.

The feeding hopper is also equipped with a drying device (such as an electric heating jacket) to prevent the raw materials from absorbing moisture again during feeding. For masterbatch with high pigment content and poor fluidity, a forced feeding device can be selected to ensure the smooth feeding of materials. Desuden, the feeding port of the extruder should be smooth, without dead corners, to avoid material sticking and accumulation.

2.2.4 Melting, Mixing and Shearing

The materials entering the extrusion cavity of the twin-screw extruder are pushed forward continuously by the rotating screws. The extrusion cavity is composed of a screw and a barrel, and the volume of the extrusion cavity gradually decreases along the axis direction. When the screws rotate, the materials are gradually compressed under the action of the screws and the barrel, og trykket i ekstruderingshulrummet øges gradvist (generally 5-12MPa).

At the same time, the materials are subjected to strong shear force and friction force generated by the relative movement between the screws and the barrel, samt mellem skruegangene. The shear force and friction force can fully break the agglomerates of pigments, make the pigments uniformly dispersed in the melted carrier, and promote the fusion and compatibility between the pigment, carrier and additives. The friction force can also generate a certain amount of heat, which is combined with the external heating of the barrel (electric heating or steam heating) to make the carrier gradually melt and plasticize.

The barrel of the extruder is usually divided into 4-6 temperature control sections (fodringsafdeling, melting section, mixing section, homogenizing section, dysehovedsektion), and the temperature of each section is precisely controlled according to the type of masterbatch (carrier type, pigment type). F.eks, when processing PE masterbatch, the temperature of the feeding section is 100-120℃, the melting section is 160-180℃, the mixing section is 170-190℃, the homogenizing section is 160-180℃, and the die head section is 150-170℃. The precise temperature control can ensure that the carrier is fully melted without thermal decomposition, and the pigments are not decomposed or discolored.

The screw of the twin-screw extruder adopts a modular design, which can freely combine different screw elements (såsom at formidle elementer, blande elementer, klippeelementer) i henhold til typen af ​​masterbatch. F.eks, ved behandling af masterbatch med højt pigmentindhold og let agglomerering, flere blandeelementer og forskydningselementer kan konfigureres til at forbedre blandings- og spredningseffekten; ved behandling af masterbatch med god fluiditet, flere transportelementer kan konfigureres for at forbedre produktionseffektiviteten.

2.2.5 Ekstrudering og formning

Den fuldt smeltede, blandet og dispergeret materiale skubbes til ekstruderens dysehoved ved hjælp af skruerne. Dysehovedet på masterbatch-ekstruderen er normalt udstyret med flere cirkulære dysehuller (antallet og størrelsen af ​​dysehuller bestemmes i henhold til masterbatchens partikelstørrelse). The material is extruded from the die head at a high speed to form continuous strip-shaped semi-finished products (the diameter of the strip is usually 2-5mm, which can be adjusted according to customer needs).

Temperaturen af ​​matricehovedet er lidt lavere end homogeniseringssektionens temperatur, which can prevent the material from decomposing due to excessive temperature and ensure the shaping effect of the strip. The extrusion speed is controlled according to the type of masterbatch and the particle size requirement, generally ranging from 1-3m/min. The extrusion pressure should be kept stable (fluctuation within ±0.5MPa), which can ensure the uniform diameter of the strip and the consistency of the masterbatch quality.

2.2.6 Cooling and Solidification

De ekstruderede strimmelformede halvfabrikata sendes til en køleanordning for hurtig afkøling og størkning. Kølemetoden for masterbatch er normalt vandtankkøling, og kølevandstemperaturen styres til 20-30 ℃. Længden af ​​kølevandsbeholderen er 3-5 meter, og afkølingstiden er 2-4 minutter. Hurtig afkøling kan få strimlen til at størkne hurtigt, fastholde strimlens form og størrelse, og undgå deformation og vedhæftning.

Det skal bemærkes, at kølehastigheden skal være ensartet. Hvis afkølingshastigheden er for høj, den indre spænding af strimlen vil være for stor, og strimlen vil være skør og let at bryde under granulering; hvis afkølingshastigheden er for langsom, strimlen bliver blød og nem at klæbe, påvirker granuleringseffekten. Efter afkøling, the surface of the strip should be dry, smooth and free of bubbles and cracks.

2.2.7 Cutting and Granulation

After cooling and solidification, the strip is sent to a granulator for cutting to form granular masterbatch products. The granulator is equipped with a rotary knife and a fixed knife, and the cutting speed is adjustable (generelt 500-1000 rpm). The particle size of the masterbatch is controlled by adjusting the cutting speed and the speed of the strip conveying. The common particle size of masterbatch is 2-5mm (length and diameter are basically the same), which is convenient for mixing with plastic raw materials during later use.

The granulator should be equipped with a screening device to remove unqualified particles (such as too large, too small, agglomerated or broken particles). The qualified particles enter the next process, og de ukvalificerede partikler knuses og genbruges (efter tørring og forblanding, de re-ekstruderes og granuleres).

2.2.8 Screening, Eftersyn og emballering

Den granulerede masterbatch sendes til en vibrerende skærm til sigtning for yderligere at fjerne ukvalificerede partikler og urenheder. Vibrationsskærmen er udstyret med en flerlagsskærm (forskellige maskestørrelser), som kan frasortere masterbatch-partikler med forskellige specifikationer efter kundernes behov.

Efter screening, masterbatchen skal gennemgå kvalitetsinspektion. Tilsynsposterne omfatter hovedsageligt: farve (ensartethed, overensstemmelse med standardprøven), dispergerbarhed (observeret ved hjælp af mikroskop eller farvning af prøvestykker), koncentration (test af farvestyrke), fugtindhold, partikelstørrelsesfordeling, osv. Kun den masterbatch, der opfylder kvalitetsstandarderne, kan pakkes.

Emballagen til masterbatch vedtager forseglet og fugtsikker emballage (såsom plastikvævede poser med indvendig plastfilm, aluminiumsfolieposer), og emballagevægten er normalt 25 kg/pose eller 50 kg/pose. Emballageposen er mærket med produktnavnet, model, farve, koncentration, carrier type, produktionsdato, holdbarhed, producent og andre oplysninger. Den pakkede masterbatch skal opbevares tørt, køligt og ventileret lager, undgå direkte sollys og fugt, og holdbarheden er generelt 6-12 måneder.

2.3 Nøglefaktorer, der påvirker Masterbatch Twin-Screw Extrusion Effect

Effekten af ​​dobbeltskrueekstrudering påvirker direkte kvaliteten af ​​masterbatch (dispergerbarhed, farvestyrke, stabilitet). Der er mange faktorer, der påvirker ekstruderingseffekten, hovedsageligt inklusive råvareegenskaber, formelforhold, forblandingseffekt, ekstruderingsparametre og udstyrs ydeevne. At mestre disse nøglefaktorer og foretage videnskabelige justeringer kan sikre stabiliteten af ​​ekstruderingseffekten og ensartet produktkvalitet.

2.3.1 Råvareegenskaber

Typen, partikelstørrelse, fugtindhold og renhed af råvarer har stor indflydelse på ekstruderingseffekten. Til pigmenter, partikelstørrelsen skal være ensartet og fin (20-40 mesh), og agglomerationsgraden bør være lav; organiske pigmenter har dårlig varmebestandighed, så ekstruderingstemperaturen bør kontrolleres strengt; uorganiske pigmenter har høj hårdhed, så ekstruderen skal have god slidstyrke. For transportører, smeltepunktet og forarbejdningstemperaturen skal være i overensstemmelse med de målrettede plastråmaterialer, og kompatibiliteten med pigmenter bør være god. Til tilsætningsstoffer, typen og doseringen skal være rimelig, og kompatibiliteten med bærere og pigmenter bør være god.

Desuden, fugtindholdet i råvarer skal være strengt kontrolleret nedenfor 0.1%; hvis fugtindholdet er for højt, det vil forårsage bobler og agglomeration i masterbatchen. Renheden af ​​råvarer er også meget vigtig; urenheder i råvarer vil ikke kun påvirke produktkvaliteten, men også slid ekstruderens skrue og cylinder.

2.3.2 Formel forhold

Formelforholdet for masterbatch (forholdet mellem pigment, bærer og additiv) er nøglen til at bestemme kvaliteten af ​​produktet. Pigmentindholdet bør bestemmes i henhold til farvekravene og typen af ​​pigment: høj koncentration masterbatch (pigmentindhold 50%-80%) kan reducere tilsætningsmængden og produktionsomkostningerne, men kræver bedre dispergerbarhed; lav koncentration masterbatch (pigmentindhold 10%-30%) har bedre spredningsevne, men tilsætningsmængden er stor, og produktionsomkostningerne er høje.

Doseringen af ​​dispergeringsmidler er generelt 1%-5% af pigmentdoseringen; for lidt dispergeringsmiddel vil føre til dårlig dispergerbarhed af pigmenter, og for meget dispergeringsmiddel vil påvirke masterbatchens og de farvede produkters mekaniske egenskaber. Doseringen af ​​andre tilsætningsstoffer (kompatibilisatorer, varmestabilisatorer, smøremidler) er generelt 0.5%-3%, som bør justeres i henhold til typen af ​​masterbatch og behandlingskrav. Formelforholdet bør være strengt kontrolleret, og fejlen skal være inden for ±1 %, for at sikre ensartet produktkvalitet mellem batch.

2.3.3 Forblandingseffekt

Forblanding er grundlaget for ekstruderingsbearbejdning. Ensartetheden af ​​forblandingen påvirker direkte blandings- og dispergeringseffekten af ​​pigmenter under ekstrudering. Hvis forblandingen er ujævn, pigmenterne kan ikke klæbes ensartet til overfladen af ​​bæreren, resulterer i lokal agglomeration af pigmenter, ujævn blanding af materialer under ekstrudering, og reduceret produktdispergerbarhed.

For at sikre forblandingseffekten, det er nødvendigt at kontrollere blandingshastigheden (800-1200 rpm), blandingstid (5-10 minutter) og blandingstemperatur (40-60℃). For masterbatch with high pigment content, the premixing time can be appropriately extended, og dispergeringsmidlet kan tilsættes først og blandes med pigmentet, derefter blandet med bæreren og andre tilsætningsstoffer. Desuden, den færdigblandede blanding skal inspiceres; hvis der er tydelige pigmentagglomerater, det skal knuses og remixes.

2.3.4 Ekstruderingsparametre

Ekstruderingsparametre er de vigtigste faktorer, der påvirker ekstruderingseffekten, hovedsageligt inklusive skruehastighed, ekstruderingstemperatur og ekstruderingstryk.

• Skruehastighed: Snekkehastigheden af ​​dobbeltskrue-ekstrudere til masterbatch-behandling varierer generelt fra 200 til 800 rpm. Jo højere skruehastighed, jo større forskydningskraft og friktionskraft modtages af materialerne, jo bedre blandings- og spredningseffekt af pigmenter, og jo højere produktionseffektivitet. Imidlertid, hvis skruehastigheden er for høj, materialernes opholdstid i ekstruderingshulrummet er for kort, resulterer i ufuldstændig smeltning af bæreren, utilstrækkelig blanding af materialer, og ujævn spredning; hvis skruehastigheden er for lav, forskydningskraften og friktionskraften er utilstrækkelig, pigmentagglomeraterne kan ikke brydes fuldstændigt, og produktionseffektiviteten er lav.
• Skruens hastighed skal justeres i henhold til typen af ​​masterbatch: til masterbatch med højt pigmentindhold og let agglomerering (såsom sort masterbatch, hvid masterbatch), en højere skruehastighed (500-800 rpm) er nødvendig for at sikre ensartet spredning af pigmenter; til masterbatch med organiske pigmenter (dårlig varmebestandighed), en moderat skruehastighed (300-500 rpm) er nødvendig for at undgå overophedning og pigmentnedbrydning.
• Ekstruderingstemperatur: Ekstruderingstemperaturen er nøglen til at sikre smeltningen af ​​bæreren og pigmentets stabilitet. Temperaturen af ​​hver sektion af cylinderen og formhovedet skal kontrolleres nøjagtigt i henhold til typen af ​​masterbatch (carrier type, pigment type). Temperaturen i fodringssektionen er lavere (lidt højere end tørretemperaturen for råvarerne), hvilket hovedsageligt skal forhindre materialerne i at kage sammen og sikre jævn fodring; temperaturen af ​​smelteafsnittet er medium, which is mainly to promote the melting and plasticization of the carrier; temperaturen i blandesektionen er højere, som hovedsageligt er for at forbedre forskydnings- og blandingseffekten, and promote the uniform dispersion of pigments; temperaturen af ​​homogeniseringssektionen er lidt lavere end blandesektionen, hvilket hovedsageligt skal sikre materialernes ensartede temperatur og viskositet, og undgå termisk nedbrydning; temperaturen af ​​formhovedsektionen er lidt lavere end homogeniseringssektionen, which is to ensure the shaping effect of the strip.
• The temperature control precision should reach ±1℃. F.eks, when processing PP masterbatch with organic pigments, the temperature of each section is: feeding section 110-130℃, melting section 170-190℃, mixing section 180-200℃, homogenizing section 170-190℃, die head section 160-180℃. If the temperature is too high, the pigment will decompose and the carrier will degrade; if the temperature is too low, the carrier will not be fully melted, and the pigment cannot be uniformly dispersed.
• Ekstrusionstryk: The extrusion pressure of masterbatch twin-screw extrusion generally ranges from 5 to 12MPa. Trykket i ekstruderingshulrummet bestemmes hovedsageligt af skruens kompressionsforhold, matricehulstørrelsen og skruehastigheden. Jo højere ekstruderingstryk, the better the mixing and dispersing effect of materials, and the denser the strip. Imidlertid, hvis trykket er for højt, det vil øge udstyrets energiforbrug og slid, og endda få matricehovedet til at blokere; hvis trykket er for lavt, materialerne kan ikke komprimeres fuldstændigt og blandes, the strip is loose, and the dispersibility is poor.
• The extrusion pressure should be adjusted according to the type of masterbatch and the die head size: for masterbatch with high pigment content and poor fluidity, a higher extrusion pressure is needed; for masterbatch with good fluidity, a moderate extrusion pressure is sufficient. The extrusion pressure should be kept stable, and the fluctuation should be within ±0.5MPa, to ensure the uniform diameter of the strip and the consistency of the masterbatch quality.

2.3.5 Equipment Performance

The performance of the twin-screw extruder directly determines the extrusion effect. The key performance indicators of the extruder include mixing and dispersing capacity, temperature control precision, slidstyrke, conveying capacity and intelligent control capacity. Zhuoyues fulde serie af ekstrudere (HTS BASIC/PLUS/SUPER, ZTE, HTE) er specielt designet til masterbatch-behandling, with excellent performance in these aspects, which can effectively meet the processing needs of different types of masterbatch.

3. Zhuoyue’s Full Series Extruders: Professional Solutions for Masterbatch Processing

Zhuoyue has long been engaged in the research, development and production of high-performance twin-screw extruders, and has accumulated rich experience in the field of masterbatch processing. According to the processing characteristics of masterbatch (højt pigmentindhold, let agglomerering af pigmenter, strict temperature control requirements, high wear resistance requirements) and the diverse needs of manufacturers (different production scales, different masterbatch types, different application fields), Zhuoyue has launched a full series of extruders suitable for masterbatch processing, inklusive HTS BASIC-serien, HTS PLUS-serien, HTS SUPER serie, ZTE-serien og HTE-serien. Each series has its own performance characteristics and targeted adaptation scenarios, which can provide personalized and efficient processing solutions for masterbatch manufacturers of different scales.

3.1 Core Advantages of Zhuoyue’s Extruders for Masterbatch Processing

Whether it is the high-end HTS SUPER series or the cost-effective ZTE series, all Zhuoyue’s extruders have the following core advantages, which are specially optimized for masterbatch processing, ensuring high-quality, efficient and stable production:

3.1.1 Excellent Mixing and Dispersing Effect

The core requirement of masterbatch processing is the uniform dispersion of pigments. All Zhuoyue’s twin-screw extruders adopt an intermeshing co-rotating structure, with a reasonable screw pitch, bly og kompressionsforhold design. Sammenkoblingen og drejningen af ​​tvillingeskruerne kan generere stærk forskydningskraft og æltekraft, som fuldstændigt kan bryde agglomeraterne af pigmenter (selv små agglomerater på 100μm over), og gør pigmenterne ensartet fordelt i bæreren. Ekstrudernes blandingsensartethed kan nå mere end 95%, hvilket er meget højere end for almindelige dobbeltskrueekstrudere (85%-90%).

Desuden, skruerne i alle serier af ekstrudere har et modulært design, som frit kan kombinere forskellige typer skrueelementer (formidling af elementer, blande elementer, klippeelementer) i henhold til typen af ​​masterbatch (såsom farve masterbatch, hvid masterbatch, sort masterbatch) og pigmentegenskaber. F.eks, ved behandling af sort masterbatch med kønrøg (let agglomeration), flere blandeelementer og forskydningselementer kan konfigureres til at forbedre blandings- og spredningseffekten; ved behandling af farvemasterbatch med organiske pigmenter (dårlig varmebestandighed), flere transportelementer og færre forskydningselementer kan konfigureres til at forkorte opholdstiden og undgå pigmentnedbrydning.

3.1.2 Præcis temperaturkontrol, Undgå nedbrydning af pigmenter

Masterbatch-behandling har strenge krav til temperaturkontrol, og temperatursvingningen skal kontrolleres inden for ±1 ℃ for at undgå pigmentnedbrydning og bærernedbrydning. Alle Zhuoyues ekstrudere anvender et avanceret intelligent temperaturkontrolsystem, som er sammensat af højpræcisionstemperaturfølere, varmeelementer og køleelementer. Tønden er opdelt i 4-6 uafhængige temperaturkontrolsektioner, og temperaturen i hver sektion kan justeres præcist og kontrolleres i realtid.

Temperaturstyringssystemet er udstyret med en realtidsovervågnings- og alarmfunktion: if the temperature of any section exceeds the set range, systemet vil udsende en alarmprompt i tide, and automatically adjust the heating power or start the cooling system to return the temperature to the set range. Desuden, the barrel of the extruder adopts a double-layer jacket design, which can realize rapid heating and cooling, and improve the response speed of temperature control. The die head is also equipped with an independent temperature control device, which ensures the uniform temperature of the die head and the stable shaping of the strip.

3.1.3 High Wear Resistance, Long Service Life

Inorganic pigments such as titanium dioxide and carbon black have high hardness, which will cause serious wear to the screw and barrel of the extruder during processing. Zhuoyues ekstrudere anvender slidbestandige materialer af høj kvalitet og avanceret fremstillingsteknologi for at sikre slidstyrken af ​​kernekomponenterne.

Skruerne og tønderne i HTS PLUS-serien, HTS SUPER-serien og HTE-serien er fremstillet af importeret slidstærkt legeret stål (såsom 38CrMoAlA), and undergo bimetallic composite treatment or laser cladding treatment. Overfladehårdheden af ​​skruer og tønder kan nå ≥65 HRC (HTS PLUS-serien, HTE-serien) og ≥70 HRC (HTS SUPER serie), som har ekstremt stærk slidstyrke og korrosionsbestandighed, og kan effektivt modstå slitage forårsaget af pigmenter med høj hårdhed. Levetiden for skruer og tønder er 2-3 gange mere end almindelige ekstrudere, reduktion af hyppigheden af ​​komponentudskiftning og vedligeholdelsesomkostningerne for udstyret.

The screws and barrels of HTS BASIC series and ZTE series are made of high-quality wear-resistant alloy steel with nitriding treatment, and the surface hardness can reach ≥60 HRC, which can meet the processing needs of ordinary masterbatch (pigment content ≤50%) and has a reasonable cost performance.

3.1.4 Høj produktionseffektivitet, Energy Saving and Environmental Protection

Zhuoyue’s extruders adopt a high-torque gearbox and an optimized screw structure, which have strong conveying capacity and high production efficiency. Compared with ordinary twin-screw extruders, the production efficiency of Zhuoyue’s extruders can be increased by 20%-50%. F.eks, the production capacity of HTS SUPER series extruders can reach 1000-3000kg/h, which is suitable for large-scale mass production; produktionskapaciteten af ​​ZTE-seriens ekstrudere er 100-500 kg/t, som er velegnet til små og mellemstore batchproduktioner.

Desuden, alle Zhuoyues ekstrudere anvender højeffektive motorer og energibesparende varmeelementer, som kan reducere energiforbruget ved 15%-20% sammenlignet med almindelige ekstrudere. Ekstruderne er udstyret med en lukket struktur, som kan reducere udledningen af ​​støv og flygtige stoffer under forarbejdningen, opfylder masterbatchindustriens miljøbeskyttelseskrav.

3.1.5 Intelligent kontrol, Nem betjening og vedligeholdelse

Alle Zhuoyue's ekstrudere anvender et PLC intelligent kontrolsystem og en berøringsskærms betjeningsgrænseflade, hvilket er enkelt og intuitivt, let at betjene. Systemet kan gemme flere sæt produktformler og behandlingsparametre (op til 100 sæt), og ved fremstilling af forskellige typer masterbatch, kun den tilsvarende formel og parametre skal kaldes, uden gentagen fejlretning, hvilket sparer tid og forbedrer produktionseffektiviteten.

Systemet er også udstyret med en overvågningsfunktion i realtid, som kan overvåge nøgleparametrene for ekstruderingsprocessen (såsom temperatur, tryk, skruehastighed, fodringshastighed) i realtid, og registrere produktionsdata (såsom output, behandlingstid) til senere forespørgsel og analyse. Til HTS SUPER serie ekstrudere, vi leverer også en cloud-kontrolfunktion, som kan realisere ekstern parameterjustering, overvågning af produktionsdata og forudsigelig vedligeholdelse af udstyr, realisere intelligent produktionsstyring.

Desuden, ekstruderne har et rimeligt strukturelt design, hvilket gør vedligeholdelsen mere bekvem. Skruerne, tønder og dysehoveder kan skilles ad og samles hurtigt, hvilket reducerer vedligeholdelsestiden og arbejdsintensiteten. Zhuoyues eftersalgsserviceteam vil levere professionel installation, idriftsættelse og undervisningsydelser til kunder, sikre, at kunderne kan bruge udstyret problemfrit.

3.1.6 Bredt anvendelsesområde, Stærk tilpasningsevne

Zhuoyues fulde serie af ekstrudere har et bredt anvendelsesområde, som kan tilpasse sig forarbejdningsbehovene for forskellige typer masterbatch, inklusive farve masterbatch, hvid masterbatch, sort masterbatch, almindelig masterbatch, funktionel masterbatch (flammehæmmende masterbatch, antistatic masterbatch), og masterbatch med forskellige bærere (PE, PP, PVC, PA, KÆLEDYR, osv.). Ekstrudererne kan også tilpasse sig behandlingen af ​​masterbatch med forskelligt pigmentindhold (10%-80%), og kan imødekomme behandlingsbehovene for forskellige anvendelsesområder (fibre, film, blæsestøbning, ekstrudering, sprøjtestøbning).

Om det er en lille og mellemstor producent, der producerer almindelig masterbatch, eller en storstilet producent, der producerer avanceret funktionel masterbatch, Zhuoyue kan levere passende ekstruderløsninger. Desuden, the extruders can be matched with different auxiliary equipment (såsom højhastighedsblandere, tørretumblere, kølere, granulatorer, sigtemaskiner, pakkemaskiner) to form a complete automatic production line, realisere kontinuerlig produktion fra råvareforbehandling til produktemballage.

3.2 Detailed Introduction of Zhuoyue’s Extruder Series and Their Adaptation to Masterbatch Processing

Zhuoyue’s extruder series for masterbatch processing include HTS BASIC, HTS PLUS, HTS SUPER, ZTE and HTE, each series has its own unique performance characteristics and targeted adaptation scenarios. Manufacturers can select the appropriate extruder series according to their own production scale, produkttype, masterbatch concentration, application field and budget.

3.2.1 HTS BASIC serie ekstrudere: Flexible and Cost-Effective Choice for Ordinary Masterbatch

The HTS BASIC series extruders are a cost-effective product series designed for small and medium-sized masterbatch manufacturers or manufacturers that mainly produce ordinary masterbatch. Denne serie af ekstrudere bruger gearkasser med medium drejningsmoment fra førende europæiske producenter, som har fordelene ved stabil ydeevne, lav støj, høj effektivitet og lang levetid. The specific torque of the extruders is 10-12Nm/cm³, which can meet the processing needs of ordinary masterbatch (pigment content ≤50%), such as PE/PP color masterbatch, low-concentration white masterbatch and black masterbatch.

Med hensyn til strukturelt design, the HTS BASIC series extruders adopt a twin-screw parallel co-rotating structure, med en skruediameter fra 30 mm til 65 mm, og et kompressionsforhold på 4-8, which can be adjusted according to the type of masterbatch. The barrel is made of wear-resistant alloy steel with nitriding treatment, and the screw is made of wear-resistant and corrosion-resistant alloy steel, which has good wear resistance. Ekstruderen er udstyret med et PLC-kontrolsystem og en berøringsskærm, which can realize automatic feeding, automatisk temperaturkontrol, automatisk trykregulering og automatisk skæring, and is simple and easy to operate.

The production capacity of the HTS BASIC series extruders ranges from 100kg/h to 500kg/h, som er velegnet til små og mellemstore masterbatch-producenter, der hovedsageligt producerer almindelig masterbatch til film, sprøjtestøbning og ekstruderingsprodukter. En af de største fordele ved denne serie er, at den kan give fleksible muligheder gennem forskellige konfigurationskombinationer. Kunder kan vælge forskellige skrueelementer, dø hoveder, fodringsudstyr og efterbehandlingsudstyr i henhold til deres egne produkttyper og produktionsbehov, for at danne en produktionslinje, der passer til deres egne behov. HTS BASIC seriens ekstrudere har en rimelig pris, som kan hjælpe små og mellemstore producenter med at reducere de oprindelige investeringsomkostninger og samtidig sikre den grundlæggende behandlingskvalitet af masterbatch. Det er et ideelt valg for virksomheder, der lige er på vej ind i masterbatch-industrien eller har begrænset produktionsskala og budget. Desuden, this series of extruders has simple operation and low maintenance cost, and its after-sales service support is consistent with other high-end series, which can fully meet the daily production needs of small and medium-sized manufacturers.

3.2.2 HTS PLUS Series Extruders: High-Torque Solution for Engineering Plastics and Filler Masterbatch

The HTS PLUS series extruders are positioned as mid-to-high-end products, specially developed for masterbatch processing scenarios with higher requirements, such as engineering plastic masterbatch and filler masterbatch. Different from the HTS BASIC series, this series adopts high-torque gearboxes independently developed and manufactured by Zhuoyue, with a specific torque of 13-16Nm/cm³, which can provide stronger shear force and kneading force, effectively solving the processing difficulties of high-viscosity, high-hardness masterbatch materials.

In terms of core components, the screws and barrels of the HTS PLUS series are made of imported wear-resistant alloy steel and undergo bimetallic composite treatment. The surface hardness reaches ≥65 HRC, which has excellent wear resistance and corrosion resistance, and can easily cope with the wear caused by filler masterbatch (såsom calciumcarbonat, talcum powder filled masterbatch) and engineering plastic masterbatch (såsom PA, PC masterbatch). The screw adopts a modular design, and is equipped with enhanced mixing elements and shearing elements, which can fully disperse the fillers and pigments in the carrier, ensuring the uniformity and stability of the masterbatch. Tønden er opdelt i 5-6 temperature control sections, with a temperature control precision of ±1℃, which can accurately control the processing temperature of engineering plastics (200-280℃) and avoid material decomposition.

The production capacity of the HTS PLUS series extruders ranges from 300kg/h to 1200kg/h, which is suitable for medium-sized and large-scale masterbatch manufacturers that produce engineering plastic masterbatch, fyldstof masterbatch, high-concentration color masterbatch (pigmentindhold 50%-70%) and other products. F.eks, in the processing of PA engineering plastic masterbatch, the HTS PLUS series can rely on its high torque and precise temperature control to ensure that the PA carrier is fully melted, and the pigments and functional additives are uniformly dispersed, avoiding the problems of color spots, streaks and poor mechanical properties of the masterbatch. In the processing of filler masterbatch, dens stærke forskydningskraft kan fuldstændigt sprede fyldstofpartiklerne (som er lette at agglomerere) i transportøren, forbedring af kompatibiliteten mellem fyldstoffet og bæreren, og sikring af forarbejdningsydelsen af ​​masterbatchen, når den blandes med nedstrøms plastråmaterialer.

Desuden, HTS PLUS-seriens ekstrudere er udstyret med et opgraderet PLC intelligent styresystem, som kan realisere mere præcis parameterstyring og dataovervågning. Systemet kan automatisk justere skruehastigheden, tilførselshastighed og ekstruderingstryk i henhold til materialets viskositet og forarbejdningseffekt, at sikre stabiliteten af ​​produktkvaliteten mellem batch. Ekstruderen er også udstyret med en tvungen fodringsanordning og en vakuumudsugningsanordning: tvangsfodringsanordningen kan sikre glat fodring af materialer med høj viskositet; vakuumudstødningsenheden kan effektivt fjerne fugt, volatile substances and air in the materials, avoiding bubbles and pores in the masterbatch, and improving the density and quality of the masterbatch. This series of extruders balances performance and cost, and is suitable for manufacturers that need to improve product quality and expand production scale.

3.2.3 HTS SUPER Series Extruders: The Pinnacle of Zhuoyue’s Technology for High-End Masterbatch

As Zhuoyue’s highest-end extruder series, the HTS SUPER series represents the advanced level of China’s twin-screw extruder development, specially designed for high-end, high-demand masterbatch processing scenarios, such as high-concentration functional masterbatch, special engineering plastic masterbatch (such as PBT, POM, LCP), and masterbatch for high-end downstream fields (new energy vehicles, medicinsk udstyr, high-end electronics).

Kernehøjdepunktet i HTS SUPER-serien er adoptionen af ​​Zhuoyues seneste uafhængigt udviklede transmissionsenhed med ultrahøjt drejningsmoment, med et specifikt drejningsmoment på 17-20Nm/cm³, hvilket er langt højere end i HTS PLUS-serien. Dette design med ultrahøjt drejningsmoment gør det muligt for ekstruderen at klare behandlingen med ultrahøj viskositet, masterbatch-materialer med ultrahøj hårdhed, såsom masterbatch med højt fyldstofindhold (fyldstofindhold ovenfor 60%) og speciel engineering plast masterbatch med højt smeltepunkt og høj viskositet. At the same time, sigter på det høje drejningsmoment og højhastighedsegenskaberne i denne serie, Zhuoyue har udført en omfattende optimering af det strukturelle design af alle nøglekomponenter i ekstruderen: skruen anvender en ny type slidstærkt legeret stål og gennemgår laserbeklædningsbehandling, med en overfladehårdhed på ≥70 HRC, som har ekstremt stærk slidstyrke og levetid (3-4 gange mere end almindelige ekstrudere); tønden vedtager en dobbelt-lags jakke + tvungen kølestruktur, som kan realisere hurtig temperaturjustering og præcis kontrol, undgå lokal overophedning af materialer under høj hastighed, høj drejningsmoment behandling; gearkassen vedtager en præcis planetgearstruktur, med lav støj, høj effektivitet og stabil drift, som kan modstå langvarigt højbelastningsarbejde.

Med hensyn til blandings- og spredningseffekt, HTS SUPER-serien er udstyret med en ny type flertrins blandeskruekombination, inklusive blandeelementer med høj forskydning, ælteblokke og dispergeringselementer, som kan generere multi-retningsbestemt forskydningskraft og æltekraft, fuldstændig bryde agglomeraterne af pigmenter og fyldstoffer (selv agglomererer under 50μm), og fremstilling af pigmenterne, fyldstoffer og bærere blandes ensartet. Blandingsensartetheden af ​​masterbatchen kan nå mere end 98%, som er velegnet til forarbejdning af høj koncentration, masterbatch med høj dispergerbarhed (pigmentindhold 70%-80%). Desuden, denne serie af ekstrudere anvender et reguleringssystem med variabel frekvenshastighed med høj præcision, og skruehastigheden kan justeres i intervallet af 300-1000 rpm, som fleksibelt kan justeres i henhold til typen af ​​masterbatch og behandlingskrav, sikrer den bedste forarbejdningseffekt.

Produktionskapaciteten af ​​HTS SUPER-seriens ekstrudere spænder fra 1000 kg/t til 3000 kg/t, som er velegnet til storskala, masterbatch-producenter af høj standard, der fokuserer på avancerede markeder. F.eks, i behandlingen af ​​masterbatch til nye energikøretøjsdele (såsom indvendige og udvendige dele til biler, batteriskal masterbatch), HTS SUPER-serien kan sikre, at masterbatchen har fremragende vejrbestandighed, høj temperaturbestandighed og dispergerbarhed, opfylder bilproducenternes strenge kvalitetskrav; i behandlingen af ​​medicinsk kvalitet masterbatch (såsom masterbatch til medicinske katetre, medicinske beholdere), det kan realisere ren produktion, undgå materialeforurening, og sikre, at masterbatchen opfylder de medicinske miljøbeskyttelsesstandarder. Denne serie af ekstrudere er også udstyret med et intelligent skykontrolsystem, som kan realisere ekstern parameterjustering, overvågning af produktionsdata, tidlig fejlmelding og forudsigelig vedligeholdelse. Producenter kan overvåge udstyrets produktionsstatus i realtid via mobiltelefoner eller computere, realisere intelligent produktionsstyring, og i høj grad forbedre produktionseffektiviteten og ledelsesniveauet.

3.2.4 ZTE serie ekstrudere: Omkostningseffektivt valg til Universal Masterbatch-behandling

ZTE-seriens ekstrudere er positioneret som omkostningseffektive produkter, specielt designet til producenter, der skal balancere forarbejdningskvalitet og omkostninger, og hovedsagelig producerer universel almindelig masterbatch. Denne serie af ekstrudere har fremragende omkostningsydelse, og dets designede parametre kan opfylde forarbejdningsbehovene for de fleste almindelige masterbatch-materialer (PE, PP, PVC masterbatch, lav koncentration farve masterbatch, sort masterbatch og hvid masterbatch med pigmentindhold ≤50 %).

Med hensyn til strukturelt design, ZTE-serien anvender en dobbeltskruet parallel medroterende struktur, with a screw diameter ranging from 25mm to 65mm, and a specific torque of 8-11Nm/cm³, which can provide sufficient shear force and conveying capacity for ordinary masterbatch processing. The screws and barrels are made of high-quality wear-resistant alloy steel with nitriding treatment, and the surface hardness reaches ≥60 HRC, which can meet the wear requirements of ordinary pigments (såsom organiske pigmenter, low-hardness inorganic pigments) and has a long service life. Tønden er opdelt i 4 temperature control sections, with a temperature control precision of ±2℃, which can accurately control the processing temperature of ordinary masterbatch (150-220℃), avoiding pigment decomposition and carrier degradation.

The production capacity of the ZTE series extruders ranges from 50kg/h to 400kg/h, which is suitable for small and medium-sized masterbatch manufacturers, small workshops and enterprises that need to produce small batches of multi-variety masterbatch. This series of extruders has the advantages of simple structure, nem betjening, lavt energiforbrug og lave vedligeholdelsesomkostninger. The operation interface adopts a simple touch screen design, which is easy to learn and master, and is suitable for operators with little experience. Desuden, the ZTE series can also be flexibly configured according to customer needs, such as adding a forced feeding device, a vacuum exhaust device or a special die head, to meet the personalized processing needs of different customers. Although the ZTE series is cost-effective, its core performance indicators (such as mixing uniformity, temperature control precision) are far higher than those of ordinary extruders on the market, which can ensure that the produced masterbatch has uniform coloring, stable performance and meets the basic use requirements of downstream customers. It is an ideal choice for enterprises with limited budget and mainly producing ordinary masterbatch.

3.2.5 HTE Series Extruders: High-Performance and Cost-Effective Integrated Solution

The HTE series extruders integrate the advantages of high performance and cost-effectiveness, aiming at medium-sized masterbatch manufacturers that need to improve production efficiency and product quality while controlling costs. This series of extruders is designed to balance performance, efficiency and cost, and is suitable for a variety of masterbatch processing scenarios, including high-concentration color masterbatch (pigmentindhold 50%-60%), ordinary functional masterbatch (flammehæmmende masterbatch, antistatic masterbatch) and masterbatch for films, blow molding and injection molding products.

In terms of core performance, the HTE series adopts a high-torque gearbox independently developed by Zhuoyue, with a specific torque of 12-14Nm/cm³, which is higher than that of the HTS BASIC and ZTE series, and can provide stronger shear force and kneading force, ensuring the uniform dispersion of pigments and additives. The screws adopt a modular design, and are equipped with a combination of conveying elements, mixing elements and shearing elements, which can be flexibly adjusted according to the type of masterbatch, improving the adaptability of the extruder. The screws and barrels are made of imported wear-resistant alloy steel with bimetallic composite treatment, and the surface hardness reaches ≥65 HRC, which has excellent wear resistance and can cope with the processing of high-hardness pigments (such as titanium dioxide, kulsort) og fyldstofmasterbatch med lavt indhold.

Den største fordel ved HTE-serien er, at den kan reducere energiforbruget og samtidig forbedre produktionseffektiviteten. Denne serie af ekstrudere vedtager en optimeret skruestruktur og en højeffektiv energibesparende motor, som kan reducere energiforbruget ved 18%-25% sammenlignet med almindelige ekstrudere af samme type. At the same time, dens produktionskapacitet spænder fra 200 kg/t til 800 kg/t, hvilket er 15%-20% højere end HTS BASIC-serien med samme specifikation. Tønden er opdelt i 5 temperature control sections, with a temperature control precision of ±1℃, som nøjagtigt kan styre behandlingstemperaturen, undgå materialespild forårsaget af overophedning eller utilstrækkelig smeltning, og yderligere reducere produktionsomkostningerne. Desuden, HTE-serien er udstyret med et PLC intelligent styresystem, som kan realisere automatisk parameterstyring, dataovervågning og formellagring, at sikre stabiliteten af ​​produktkvaliteten mellem batch. The extruder is also equipped with a vacuum exhaust device and a forced feeding device, which can improve the quality of masterbatch and ensure the smooth progress of production.

The HTE series is suitable for medium-sized masterbatch manufacturers that are in the stage of expanding production scale and upgrading product quality. It can not only meet the processing needs of high-quality masterbatch, but also control the production cost effectively, helping enterprises improve their market competitiveness. Compared with the HTS PLUS series, the HTE series has a more reasonable price; compared with the ZTE series, it has better performance and higher production efficiency, which is a cost-effective choice between mid-range and high-end products.

4. Wide Application Fields of Masterbatch and Matching Zhuoyue Extruder Solutions

As an indispensable core material in the plastics industry, masterbatch is widely used in fibers, film, blæsestøbning, extrusion molding, injection molding and other fields. Different application fields have different requirements on the performance of masterbatch (såsom spredningsevne, temperature resistance, color fastness) and production efficiency, which also determines the selection of twin-screw extruders. Zhuoyue’s full series of extruders can provide targeted solutions for different application fields, ensuring that the produced masterbatch meets the specific requirements of downstream products. The following is a detailed introduction to the application fields of masterbatch and the matching Zhuoyue extruder series.

4.1 Fiber Field: Krav til høj spredningsevne og farveægthed

Masterbatch på fiberområdet bruges hovedsageligt til farvning af kemiske fibre, såsom polyesterfiber, nylon fiber, polypropylen fiber, osv., og de endelige produkter inkluderer tæpper, tekstiler, puder, ikke-vævede stoffer, osv. Dette felt har ekstremt høje krav til masterbatch: først, high dispersibility. Fiberdiameteren er meget lille (normalt et par mikron til snesevis af mikron), og hvis pigmenterne i masterbatchen ikke er ensartet dispergeret, det vil forårsage farvepletter, striber og ujævn finhed af fiberen, påvirker fiberproduktets udseende og kvalitet; anden, høj farveægthed. Fiberprodukterne skal igennem spinding, vævning, farvning og efterbehandling og andre processer, og masterbatchen skal have god vaskeægthed, lysægthed og friktionsægthed, undgå farvefalmning og misfarvning; tredje, lavt indhold af urenheder. Urenheder i masterbatchen vil forårsage brud på fiberen under spinding, reducere udbyttet af fiberen.

I henhold til kravene i fiberfeltet, den egnede Zhuoyue-ekstruderserie er HTS PLUS-serien, HTS SUPER-serien og HTE-serien. Til high-end fiber masterbatch (såsom højkvalitets tekstilfibre, tæppefiber), HTS SUPER-serien anbefales. Dens ultra-høje blandingsensartethed (≥98 %) kan sikre, at pigmenterne er ensartet fordelt i bæreren, undgå farvepletter og striber af fiberen; det høje drejningsmoment og den præcise temperaturkontrol kan sikre stabiliteten af ​​masterbatch-ydelsen, forbedring af fiberens farveægthed. Til medium-grade fiber masterbatch (såsom almindelige tekstilfibre, ikke-vævet stof), HTS PLUS-serien og HTE-serien anbefales. Their high mixing and dispersing effect can meet the basic requirements of fiber masterbatch, and the cost performance is higher. For small-batch, low-cost fiber masterbatch, the HTS BASIC series can also be selected, which can ensure the basic dispersibility and color fastness.

4.2 Film Field: High Transparency and Uniform Coloring Requirements

Masterbatch in the film field is mainly used for coloring plastic films, såsom indkøbsposer, casting af film, flerlags film, packaging films, landbrugsfilm, osv. The key requirements of this field for masterbatch are: først, high transparency. For transparent or translucent films (such as food packaging films, agricultural mulch films), the masterbatch must have good transparency, avoiding affecting the appearance and visibility of the packaged products; anden, uniform coloring. The film surface must be uniform in color, without color spots, color streaks and color difference, ensuring the aesthetic property of the film; tredje, good processing fluidity. The film extrusion speed is fast, and the masterbatch must have good fluidity, which is conducive to the uniform mixing of the masterbatch and the film base material, and avoiding affecting the film forming efficiency.

For the film field, the suitable Zhuoyue extruder series are HTS BASIC series, HTE series and HTS PLUS series. For ordinary film masterbatch (såsom indkøbsposer, ordinary packaging films), the HTS BASIC series and HTE series are recommended. Their good mixing and dispersing effect can ensure uniform coloring of the film, and the good processing fluidity can match the high-speed extrusion of the film. For high-end film masterbatch (such as food packaging films, multi-layer composite films), the HTS PLUS series is recommended. Its precise temperature control can avoid the decomposition of pigments and carriers, ensuring the transparency and safety of the film; the enhanced mixing elements can further improve the dispersibility of the masterbatch, making the film surface more smooth and uniform. For ultra-high transparent film masterbatch (such as PET packaging films), the HTS SUPER series can be selected, which can achieve ultra-high dispersibility of pigments, ensuring the transparency and clarity of the film.

4.3 Blow Molding Field: Good Fluidity and Dimensional Stability Requirements

Masterbatch in the blow molding field is mainly used for coloring blow molding products, såsom medicinske og kosmetiske beholdere, smøreolie og malingsbeholdere, drikkevareflasker, plastic barrels, osv. The requirements of this field for masterbatch are: først, good processing fluidity. Blow molding products need to be formed by high-temperature blow molding, and the masterbatch must have good fluidity, which is conducive to the uniform distribution of the masterbatch in the parison, avoiding uneven wall thickness and color difference of the product; anden, good dimensional stability. The blow molding products have strict requirements on dimensional accuracy, and the masterbatch must have stable performance, avoiding the deformation of the product due to uneven shrinkage; tredje, environmental protection. Especially for medical and cosmetic containers, the masterbatch must meet environmental protection standards, non-toxic and harmless, without volatile substances.

For the blow molding field, the suitable Zhuoyue extruder series are ZTE series, HTS BASIC series and HTE series. For ordinary blow molding masterbatch (such as lubricating oil containers, plastic barrels), the ZTE series and HTS BASIC series are recommended. Their reasonable screw structure and temperature control system can ensure the good fluidity and stability of the masterbatch, meeting the basic requirements of blow molding products. For medium-grade blow molding masterbatch (such as cosmetic containers, drikkevareflasker), the HTE series is recommended. Its high production efficiency and energy-saving advantages can reduce production costs, and the good mixing and dispersing effect can ensure uniform coloring and dimensional stability of the product. For high-end blow molding masterbatch (such as medical containers), the HTS PLUS series and HTS SUPER series are recommended. Their high-precision temperature control and clean production design can ensure that the masterbatch meets medical grade standards, and the stable performance can ensure the dimensional accuracy and safety of the product.

4.4 Extrusion Molding Field: High Dimensional Stability and Wear Resistance Requirements

Masterbatch in the extrusion molding field is mainly used for coloring extrusion products, såsom ark, rør, ledninger og kabler, profiler, osv. The key requirements of this field for masterbatch are: først, high dimensional stability. Extrusion products (such as pipes, profiler) have strict requirements on dimensional accuracy, and the masterbatch must have stable performance, avoiding the deformation and color difference of the product due to uneven shrinkage; anden, good wear resistance. For products such as pipes and wires and cables that need to withstand friction and extrusion, the masterbatch must have good wear resistance, ensuring the service life of the product; tredje, good weather resistance. For outdoor extrusion products (such as building profiles, outdoor pipes), the masterbatch must have good weather resistance, avoiding color fading and performance degradation under sunlight and rain.

For the extrusion molding field, den egnede Zhuoyue-ekstruderserie er HTS PLUS-serien, HTE series and HTS SUPER series. For ordinary extrusion masterbatch (such as indoor sheets, ordinary pipes), the HTE series and HTS BASIC series are recommended. Their good mixing and dispersing effect can ensure uniform coloring of the product, and the stable performance can ensure the dimensional accuracy of the product. For medium-grade extrusion masterbatch (such as wires and cables, building profiles), the HTS PLUS series is recommended. Its high-torque gearbox and wear-resistant screw/barrel can cope with the processing of high-hardness, high-viscosity masterbatch, ensuring the wear resistance and weather resistance of the product. For high-end extrusion masterbatch (such as high-temperature resistant pipes, outdoor high-grade profiles), HTS SUPER-serien anbefales. Its ultra-high torque and precise temperature control can ensure the stable performance of the masterbatch, and the enhanced wear resistance can further extend the service life of the product.

4.5 Injection Molding Field: High Dispersibility and Batch Stability Requirements

Masterbatch in the injection molding field is the most widely used, mainly used for coloring injection molding products, såsom bildele, electronic products, construction materials, home appliances, møbel, toys, osv. The requirements of this field for masterbatch are diverse, but the core requirements are: først, high dispersibility. Injection molding products have complex shapes and small sizes, and the masterbatch must have high dispersibility, avoiding color spots, color streaks and uneven coloring of the product; anden, good batch stability. Injection molding products are usually produced in large batches, and the masterbatch must have stable performance, ensuring no color difference between batches of products; tredje, targeted functional requirements. F.eks, automotive parts require masterbatch with high temperature resistance and flame retardancy, electronic products require masterbatch with antistatic performance, and toys require masterbatch with non-toxic and environmental protection performance.

For the injection molding field, Zhuoyue’s full series of extruders can provide corresponding solutions according to different product levels. For ordinary injection molding masterbatch (such as toys, ordinary home appliances), the ZTE series and HTS BASIC series are recommended. Their cost-effective advantages can reduce production costs, and the basic mixing and dispersing effect can meet the requirements of ordinary products. For medium-grade injection molding masterbatch (such as electronic products, ordinary automotive parts), the HTE series and HTS PLUS series are recommended. Their high mixing and dispersing effect and batch stability can ensure the quality of the product, and the targeted functional masterbatch processing capacity can meet the special requirements of the product. For high-end injection molding masterbatch (such as high-grade automotive parts, precision electronic products), HTS SUPER-serien anbefales. Its ultra-high dispersibility, batch stability and high-temperature resistance can meet the strict quality requirements of high-end products, and the intelligent control system can ensure the efficiency and stability of large-scale production.

5. Common Problems and Solutions in Masterbatch Twin-Screw Extrusion Processing

In the actual production process of masterbatch, på grund af påvirkning af råvarer, formel, processing parameters and equipment performance, various problems often occur, which affect the quality of masterbatch and production efficiency. Based on years of industry experience, Zhuoyue summarizes the common problems in masterbatch twin-screw extrusion processing, analyzes the causes in detail, and provides corresponding solutions, which can help manufacturers quickly solve production problems and improve production efficiency and product quality.

5.1 Common Problem 1: Poor Dispersibility of Masterbatch, Color Spots and Streaks in Products

This is the most common problem in masterbatch processing, which is mainly manifested in uneven coloring of the masterbatch, obvious pigment agglomerates, and color spots and streaks in the colored plastic products. The main causes and solutions are as follows:

5.1.1 Main Causes:

• (1) Raw material problems: The pigment particle size is too large, the agglomeration degree is high, and the drying is insufficient; the compatibility between the pigment and the carrier is poor; the dispersant dosage is insufficient or the type is improper.
• (2) Premixing problems: The mixing speed is too low, the mixing time is too short, the mixing temperature is improper, resulting in uneven premixing of raw materials.
• (3) Extrusion parameter problems: The screw speed is too low, the shear force is insufficient, and the pigment agglomerates cannot be fully broken; the extrusion temperature is too low, the carrier is not fully melted, and the pigment cannot be uniformly dispersed.
• (4) Equipment problems: The screw mixing elements are insufficient or worn; the barrel and screw are worn, resulting in reduced shear force; the die head is blocked, affecting the uniform extrusion of materials.

5.1.2 Løsninger:

• (1) Optimize raw materials: Select pigments with small particle size and low agglomeration degree, and dry them thoroughly (moisture content ≤0.1%); select carriers compatible with pigments; replace appropriate dispersants and increase the dosage appropriately (within 1%-5% af pigmentdoseringen).
• (2) Improve premixing effect: Increase the mixing speed to 800-1200 rpm, extend the mixing time to 5-10 minutter, and control the mixing temperature at 40-60℃; for high-concentration masterbatch, add dispersant first and mix with pigment, then mix with carrier and other additives.
• (3) Adjust extrusion parameters: Increase the screw speed appropriately (500-800 rpm for high-concentration masterbatch), improve the shear force; increase the extrusion temperature appropriately to ensure that the carrier is fully melted (adjust according to the carrier type).
• (4) Maintain equipment: Replace worn screw mixing elements, barrel and screw; clean the die head regularly to avoid blockage; check the equipment regularly to ensure that the screw and barrel are properly matched.

5.2 Common Problem 2: Pigment Decomposition and Discoloration of Masterbatch

This problem is mainly manifested in the discoloration of the masterbatch (such as yellowing, darkening), the color is inconsistent with the standard sample, and even peculiar smell is generated. It is mostly caused by overheating of the material during extrusion processing, which is common in organic pigment masterbatch and engineering plastic masterbatch. The main causes and solutions are as follows:

5.2.1 Main Causes:

• (1) Extrusion temperature is too high: The temperature of the mixing section, homogenizing section or die head is too high, exceeding the heat resistance limit of the pigment or carrier.
• (2) The residence time of the material is too long: The screw speed is too low, the compression ratio is too large, resulting in the material staying in the extrusion cavity for too long (more than 3 minutter), and thermal decomposition occurs.
• (3) Poor heat dissipation of the equipment: The cooling system of the barrel fails, resulting in local overheating of the barrel.
• (4) Raw material problems: The heat resistance of the pigment is poor, or the carrier is easy to degrade at high temperature.

5.2.2 Løsninger:

• (1) Adjust extrusion temperature: Reduce the temperature of the mixing section, homogenizing section and die head appropriately, and control it within the heat resistance range of the pigment and carrier (150-220℃ for ordinary masterbatch, 200-280℃ for engineering plastic masterbatch); check the temperature sensor regularly to ensure accurate temperature control.
• (2) Shorten the residence time: Increase the screw speed appropriately, reduce the compression ratio of the screw, and ensure that the residence time of the material in the extrusion cavity is 1-3 minutter.
• (3) Maintain the cooling system: Check the cooling water circulation system regularly, clean the cooling pipe, and ensure that the barrel can dissipate heat normally; replace the faulty cooling element in time.
• (4) Optimize raw materials: Select pigments with good heat resistance (such as inorganic pigments for high-temperature processing); select carriers with stable performance and not easy to degrade; add appropriate heat stabilizers (0.5%-3%) to prevent pigment decomposition and carrier degradation.

5.3 Common Problem 3: High Wear of Screw and Barrel, Short Service Life

This problem is common in the processing of white masterbatch, black masterbatch and filler masterbatch, which is mainly manifested in the rapid wear of the screw and barrel, reduced shear force and mixing capacity of the extruder, and increased maintenance cost. The main causes and solutions are as follows:

5.3.1 Main Causes:

• (1) Raw material problems: The pigment or filler has high hardness (such as titanium dioxide, kulsort, calciumcarbonat), and the particle size is too large, which causes severe wear to the screw and barrel.
• (2) Extrusion parameter problems: The screw speed is too high, the shear force is too large, and the friction between the material and the screw/barrel is increased; the extrusion pressure is too high, which increases the wear of the screw and barrel.
• (3) Equipment problems: The screw and barrel are made of materials with poor wear resistance, or the processing technology is improper; the screw and barrel are not properly matched, resulting in uneven stress and increased wear.

5.3.2 Løsninger:

• (1) Optimize raw materials: Select pigments or fillers with small particle size (20-40 mesh) and low hardness; crush and sieve the raw materials to remove large particles; add appropriate lubricants (0.5%-2%) to reduce the friction between the material and the screw/barrel.
• (2) Adjust extrusion parameters: Reduce the screw speed and extrusion pressure appropriately, and control the shear force within a reasonable range; avoid long-term high-speed and high-pressure operation of the equipment.
• (3) Select high-wear-resistant equipment: Select extruders with high-wear-resistant screws and barrels, such as Zhuoyue’s HTS PLUS, HTS SUPER and HTE series, whose screws and barrels are made of imported wear-resistant alloy steel and undergo bimetallic composite or laser cladding treatment, which can greatly improve the service life; regularly check the wear of the screw and barrel, and replace them in time when the wear is serious.

5.4 Common Problem 4: Ustabilitet af produktkvalitet mellem batches, Color Difference

This problem is mainly manifested in the inconsistency of masterbatch quality (såsom koncentration, dispergerbarhed, farve) between different batches, resulting in color difference of downstream products, which affects the reputation of the manufacturer. The main causes and solutions are as follows:

5.4.1 Main Causes:

• (1) Formula problem: The formula ratio is not strictly controlled, and the dosage of pigment, dispersant and other additives fluctuates (error exceeds ±1%).
• (2) Raw material problem: The performance of raw materials (such as pigment tinting strength, carrier melting point) of different batches is inconsistent.
• (3) Processing parameter problem: The extrusion temperature, skruehastighed, feeding speed and other parameters fluctuate between different batches, resulting in inconsistent processing effect.
• (4) Equipment problem: The equipment has poor stability, and the parameters (såsom temperatur, tryk) cannot be kept stable for a long time.

5.4.2 Løsninger:

• (1) Strictly control the formula ratio: Use high-precision weighing equipment to weigh raw materials, and the error is controlled within ±1%; establish a formula management system, and record the dosage of each raw material in detail.
• (2) Standardize raw material procurement and inspection: Select raw material suppliers with stable quality, and inspect the performance of raw materials (such as tinting strength, partikelstørrelse, fugtindhold) before use; for raw materials of different batches, conduct trial production first to ensure consistent performance.
• (3) Standardize processing parameters: Use an intelligent control system (such as Zhuoyue’s PLC control system) to store the processing parameters of different masterbatch, and call the corresponding parameters when producing different batches, undgå gentagen fejlretning; regularly check the equipment parameters to ensure stable operation.
• (4) Establish quality inspection system: Conduct strict quality inspection on each batch of masterbatch, inklusive farve, dispergerbarhed, concentration and other indicators, and only deliver the products that meet the standards.

5.5 Common Problem 5: Poor Processing Fluidity of Masterbatch, Difficult Extrusion, Udstyrsblokering

This problem is mainly manifested in the difficulty of material conveying and extrusion, lav produktionseffektivitet, unstable extrusion pressure, and even blockage of the die head and extrusion cavity, which affects the normal production. The main causes and solutions are as follows:

5.5.1 Main Causes:

• (1) Raw material problem: The carrier has poor fluidity, or the pigment content is too high (more than 80%), resulting in poor fluidity of the mixture; the raw material has high moisture content, which causes the material to agglomerate and block the feeding port.
• (2) Premixing problem: The premixing is uneven, and the dispersant is not fully mixed, resulting in poor fluidity of the material.
• (3) Extrusion parameter problem: The extrusion temperature is too low, the carrier is not fully melted, and the fluidity is poor; the screw speed is too low, the conveying capacity is insufficient; the die head hole is too small, and the extrusion resistance is too large.
• (4) Equipment problem: The screw conveying elements are worn, the conveying capacity is reduced; the feeding device fails, resulting in uneven feeding.

5.5.2 Løsninger:

• (1) Optimize raw materials: Select carriers with good fluidity; reduce the pigment content appropriately (control within 80%); dry the raw materials thoroughly to control the moisture content below 0.1%.
• (2) Improve premixing effect: Extend the premixing time, increase the mixing speed, ensure that the dispersant is fully mixed with the pigment and carrier, and improve the fluidity of the mixture.
• (3) Adjust extrusion parameters: Increase the extrusion temperature appropriately to ensure that the carrier is fully melted; increase the screw speed to improve the conveying capacity; replace the die head with larger die holes to reduce extrusion resistance.
• (4) Maintain equipment: Replace worn screw conveying elements; check the feeding device regularly, and repair or replace the faulty parts in time; clean the feeding port and extrusion cavity regularly to avoid material accumulation and blockage.

6. Practical Application Cases of Zhuoyue Extruders in Masterbatch Processing

To further verify the performance advantages and application effects of Zhuoyue’s full series of extruders in masterbatch processing, this section will introduce several practical application cases, covering different masterbatch types, production scales and application fields. These cases fully demonstrate that Zhuoyue’s extruders can provide targeted and efficient processing solutions for different manufacturers, helping manufacturers improve production efficiency, product quality and market competitiveness.

6.1 Case 1: Application of HTS SUPER Series in High-Concentration Black Masterbatch Processing for New Energy Vehicles

Customer Background: A large-scale masterbatch manufacturer in Jiangsu, Kina, mainly produces high-end functional masterbatch, focusing on the new energy vehicle field. The customer needs to produce high-concentration black masterbatch (carbon black content 70%) for automotive battery shell parts. The masterbatch requires ultra-high dispersibility (no black spots and streaks in the product), high temperature resistance (can withstand 200℃ high temperature without discoloration), and good batch stability. The customer’s original equipment has problems such as insufficient mixing and dispersing effect, unstable temperature control, and low production efficiency, which cannot meet the production requirements.

Solution: Zhuoyue recommends the HTS SUPER series twin-screw extruders (screw diameter 75mm) for the customer. This series adopts ultra-high torque gearboxes and laser-clad wear-resistant screws/barrels, which can provide strong shear force and wear resistance, effectively solving the problem of carbon black agglomeration; the 6-section precise temperature control system (temperature control precision ±1℃) can accurately control the extrusion temperature, avoiding carbon black decomposition; the multi-stage mixing screw combination ensures that the carbon black is uniformly dispersed in the PE carrier; the intelligent cloud control system can realize remote parameter adjustment and data monitoring, ensuring batch stability.

Application Effect: After using the HTS SUPER series extruders, the customer’s high-concentration black masterbatch has achieved ultra-high dispersibility, and the colored battery shell parts have no black spots and streaks, which meets the strict requirements of new energy vehicle manufacturers; the high temperature resistance of the masterbatch has been significantly improved, and no discoloration occurs at 200℃; the production efficiency has increased from 500kg/h to 1200kg/h, and the energy consumption has decreased by 22%; the batch stability of the masterbatch has been greatly improved, and the color difference between batches is less than 0.5, which has won high recognition from downstream customers. The customer has successively purchased 8 sets of HTS SUPER series extruders, forming a large-scale production line.

6.2 Case 2: Application of HTS PLUS Series in Engineering Plastic PA Masterbatch Processing

Customer Background: A medium-sized masterbatch manufacturer in Guangdong, Kina, mainly produces engineering plastic masterbatch, focusing on the automotive and electronic fields. The customer needs to produce PA66 masterbatch (pigmentindhold 50%) for automotive connector parts. The masterbatch requires good dispersibility, high temperature resistance (260℃), and good compatibility with PA66 raw materials. The customer’s original equipment has problems such as poor wear resistance of the screw/barrel, insufficient torque, and easy decomposition of PA66 carrier, which affects the product quality.

Solution: Zhuoyue recommends the HTS PLUS series twin-screw extruders (screw diameter 65mm) for the customer. This series adopts high-torque gearboxes independently developed by Zhuoyue, which can provide sufficient torque for PA66 masterbatch processing; the bimetallic composite screw/barrel has excellent wear resistance and corrosion resistance, which can cope with the wear of high-hardness pigments; the 5-section precise temperature control system and vacuum exhaust device can avoid PA66 carrier decomposition and remove moisture and volatile substances, ensuring the quality of the masterbatch; the modular screw design can be flexibly configured according to the PA66 masterbatch processing characteristics, improving the mixing and dispersing effect.

Application Effect: After using the HTS PLUS series extruders, the customer’s PA66 masterbatch has good dispersibility, and the automotive connector parts have uniform coloring and no color spots; the masterbatch can withstand 260℃ high temperature without decomposition and discoloration, and has good compatibility with PA66 raw materials; the service life of the screw/barrel has increased from 6 months to 18 måneder, reducing the maintenance cost by 60%; the production efficiency has increased from 300kg/h to 800kg/h, and the product qualification rate has increased from 92% til 99%. The customer’s PA66 masterbatch has successfully entered the supply chain of a well-known automotive parts manufacturer.

6.3 Case 3: Application of HTE Series in Cost-Effective Film Masterbatch Processing

Customer Background: A small and medium-sized masterbatch manufacturer in Zhejiang, Kina, mainly produces film masterbatch, focusing on the packaging film field. The customer needs to produce PE film masterbatch (pigmentindhold 40%) for food packaging films. The masterbatch requires good transparency, uniform coloring, and low production cost. The customer’s original equipment has problems such as high energy consumption, unstable product quality, and low production efficiency, which cannot meet the market competition needs.

Solution: Zhuoyue recommends the HTE series twin-screw extruders (screw diameter 50mm) for the customer. This series integrates high performance and cost-effectiveness, adopts high-efficiency energy-saving motors and optimized screw structures, som kan reducere energiforbruget ved 18%-25%; the precise temperature control system ensures that the PE carrier is fully melted, avoiding affecting the transparency of the masterbatch; the enhanced mixing elements ensure uniform coloring of the masterbatch, and the stable performance ensures batch consistency; the reasonable price and low maintenance cost can help the customer reduce production costs.

Application Effect: After using the HTE series extruders, the customer’s PE film masterbatch has good transparency and uniform coloring, and the food packaging films produced have smooth surface and no color spots, which meets the food packaging standards; the energy consumption per ton of masterbatch has decreased by 20%, and the production efficiency has increased from 150kg/h to 400kg/h; the product qualification rate has increased from 90% til 98%, and the production cost has decreased by 15%. The customer’s market competitiveness has been significantly improved, and the order volume has increased by 40% within half a year. The customer has purchased 4 sets of HTE series extruders to expand production scale.

6.4 Case 4: Application of ZTE Series in Small-Batch Multi-Variety Ordinary Masterbatch Processing

Customer Background: A small masterbatch manufacturer in Shandong, Kina, mainly produces small-batch multi-variety ordinary masterbatch (PE/PP color masterbatch, sort masterbatch, hvid masterbatch), focusing on the local plastic product processing market. The customer has limited budget, small production scale, and needs to produce multiple types of masterbatch with small batches (50-100kg per batch). The customer’s requirements for the equipment are simple operation, low maintenance cost, and strong adaptability.

Solution: Zhuoyue recommends the ZTE series twin-screw extruders (screw diameter 35mm) for the customer. This series has excellent cost performance, simple structure and easy operation, which is suitable for operators with little experience; the modular screw design can be flexibly adjusted according to different types of masterbatch, with strong adaptability; the wear-resistant screw/barrel and stable temperature control system can meet the basic processing requirements of ordinary masterbatch; the low energy consumption and low maintenance cost can help the customer reduce the initial investment and daily operation costs.

Application Effect: After using the ZTE series extruders, the customer can flexibly produce multiple types of ordinary masterbatch, and the product quality meets the basic requirements of local plastic product manufacturers; the equipment operation is simple, and the operator can master it quickly; the maintenance cost is low, and the annual maintenance cost is less than 5000 yuan; the production efficiency can meet the small-batch production needs (50-200kg/t). The ZTE series extruders have helped the customer stabilize the local market and lay a foundation for future expansion.

7. Future Development Trend of Masterbatch and Twin-Screw Extrusion Technology

With the continuous development of the global plastics industry, the upgrading of environmental protection policies and the diversification of downstream market demand, the masterbatch industry and twin-screw extrusion technology are facing new development opportunities and challenges. The future development trend will focus on environmental protection, funktionalisering, intelligence and high efficiency, and Zhuoyue will continue to focus on technological innovation, keep up with the industry trend, and provide more advanced and efficient processing solutions for masterbatch manufacturers.

7.1 Development Trend of Masterbatch Industry

7.1.1 In-depth Development of Environmental Protection and Low Toxicity.

With the strengthening of global environmental protection awareness and the strictness of environmental protection policies (such as the European Union’s REACH directive, China’s “double carbon” goal), environmental protection masterbatch will become the mainstream of the market. The future environmental protection masterbatch will focus on non-toxic, harmless, low-volatile, degradable and recyclable, and toxic and harmful pigments (such as heavy metal pigments) and additives will be completely eliminated. F.eks, water-based masterbatch, bio-based masterbatch and recyclable masterbatch will have broad market prospects. At the same time, the recycling of masterbatch waste will also become an important development direction, which can reduce resource waste and environmental pollution.

7.1.2 Functional Integration and High Performance.

With the diversification of downstream product requirements, masterbatch will develop towards functional integration, that is, integrating multiple functions (such as coloring, flame retardant, antistatisk, antibacterial, UV-resistant) into one masterbatch, which can reduce the addition amount of masterbatch, simplify the processing process, and reduce production costs. F.eks, new energy vehicle masterbatch will integrate high temperature resistance, flame retardant, antistatic and other functions; medical masterbatch will integrate non-toxic, antibacterial, high transparency and other functions. Desuden, high-performance masterbatch (such as high-concentration, high-dispersibility, high-temperature resistant, corrosion-resistant masterbatch) will be more widely used in high-end fields such as aerospace, precision electronics and new energy.

7.1.3 Customization and Personalization.

With the upgrading of downstream market demand, the customization and personalization of masterbatch will become more and more prominent. Different downstream manufacturers have different requirements on masterbatch (såsom farve, koncentration, function, carrier type), and masterbatch manufacturers need to provide personalized customization solutions according to the specific needs of customers. F.eks, according to the color sample provided by the customer, customize the masterbatch with matching color; according to the special use environment of the product, customize the masterbatch with targeted functions. This requires masterbatch manufacturers to have strong R&D capabilities and flexible production capacity.

7.2 Development Trend of Twin-Screw Extrusion Technology

7.2.1 Intelligence and Automation Upgrading.

The future twin-screw extruders will develop towards higher intelligence and automation. The intelligent control system will integrate AI, big data, Internet of Things and other technologies, which can realize real-time monitoring, automatic parameter adjustment, fault early warning, predictive maintenance and production data analysis of the extrusion process. F.eks, the AI system can automatically adjust the screw speed, extrusion temperature and feeding speed according to the raw material performance and processing effect, ensuring the stability of product quality; the Internet of Things technology can realize the interconnection of multiple extruders, realizing centralized management and intelligent scheduling of the production line; the big data system can analyze the production data, optimize the processing parameters and formula, and improve production efficiency and product quality.

7.2.2 High Efficiency, Energy Saving and Environmental Protection.

High efficiency, energy saving and environmental protection will continue to be the key development direction of twin-screw extrusion technology. The future extruders will adopt more advanced screw structures, high-efficiency energy-saving motors and heating/cooling systems, which can further reduce energy consumption and improve production efficiency. F.eks, the optimized screw structure can reduce the shear loss and improve the conveying efficiency; the high-efficiency energy-saving motor can reduce the energy consumption by 25%以上 compared with the traditional motor; the closed structure and waste gas treatment system can reduce the emission of dust and volatile substances, meeting the higher environmental protection requirements.

7.2.3 High Performance and Wear Resistance.

With the development of high-concentration, high-hardness masterbatch (such as filler masterbatch, engineering plastic masterbatch), the requirements for the performance and wear resistance of twin-screw extruders will be higher. The future extruders will adopt more high-performance wear-resistant materials (such as new alloy steel, ceramic materials) and advanced manufacturing technologies (such as laser cladding, bimetallic composite), som i høj grad kan forbedre slidstyrken og korrosionsbestandigheden af ​​skruen og tønden, extend the service life of the equipment. At the same time, the extruders will be equipped with higher torque gearboxes and more advanced mixing elements, which can provide stronger shear force and kneading force, meeting the processing needs of high-performance masterbatch.

7.2.4 Modularization and Flexibility.

Modularization and flexibility will become an important development trend of twin-screw extruders. The future extruders will adopt a more perfect modular design, and the screw, tønde, die head and other components can be freely combined and replaced according to the type of masterbatch and processing requirements, which can improve the adaptability of the equipment and reduce the investment cost of the customer. F.eks, when producing different types of masterbatch, only the corresponding screw elements and die head need to be replaced, without replacing the entire extruder. Desuden, the small and medium-sized modular extruders will be more popular, which can meet the small-batch and multi-variety production needs of small and medium-sized manufacturers.

7.3 Zhuoyue’s Layout in the Future Development Trend

Facing the future development trend of the masterbatch industry and twin-screw extrusion technology, Zhuoyue will focus on technological innovation and product upgrading, and make layout in the following aspects: først, strengthen the R&D of intelligent extrusion technology, integrate AI, big data and Internet of Things technologies into the extruder design, launch more intelligent and automatic extruders, and help customers realize intelligent production; anden, increase the R&D investment in high-performance wear-resistant materials and energy-saving technologies, develop more efficient, energy-saving and wear-resistant extruders, reduce the production cost and environmental impact of customers; tredje, strengthen the R&D of customized solutions, according to the personalized needs of different customers, provide targeted extruder configuration and processing solutions, and improve customer satisfaction; fjerde, expand the R&D of environmental protection masterbatch processing technology, launch extruders suitable for water-based masterbatch, bio-based masterbatch and recyclable masterbatch processing, and help the masterbatch industry achieve green development.

8. Konklusion

Masterbatch, as the core material of plastic coloring and functional modification, plays an indispensable role in the global plastics industry. Twin-screw extrusion technology, as the key processing technology of masterbatch, directly determines the quality, production efficiency and market competitiveness of masterbatch products. With the continuous development of the masterbatch industry towards environmental protection, funktionalisering, high concentration and intelligence, the requirements for twin-screw extruders are becoming higher and higher.

Zhuoyue, as a professional manufacturer of twin-screw extruders, has launched a full series of extruders (HTS BASIC/PLUS/SUPER, ZTE, HTE) specially designed for masterbatch processing, each series has its own unique performance characteristics and targeted adaptation scenarios, which can provide personalized and efficient processing solutions for masterbatch manufacturers of different scales and fields. These extruders have the advantages of excellent mixing and dispersing effect, præcis temperaturkontrol, high wear resistance, høj produktionseffektivitet, energy saving and environmental protection, intelligent control and wide application range, which have been fully verified in many practical application cases.

This article comprehensively elaborates on the core knowledge of masterbatch, the principle and process of twin-screw extrusion technology, the performance advantages of Zhuoyue’s full series of extruders, the application fields of masterbatch, common problems and solutions in processing, practical application cases, and the future development trend. It is hoped that this article can provide comprehensive and professional reference for masterbatch manufacturers, processing technicians, industry practitioners and relevant researchers.

I fremtiden, Zhuoyue will continue to adhere to the concept of technological innovation and customer-oriented, keep up with the development trend of the industry, continuously upgrade products and technologies, provide more advanced, efficient and environmentally friendly twin-screw extrusion solutions, and work together with masterbatch manufacturers around the world to promote the high-quality development of the masterbatch industry.