Celeri progressionis industriarum globalis, postulatio summus perficientur materiae in eget, electrica et electronic, constructione, medicinae et aliis agris crescit in dies. Engineering materia plastica, sicut key summus perficientur materia, gradatim reponuntur materiae metallicae et materias generales in multis nucleis et materia plastica in multis missionibus core applicationis propter excellentes proprietates mechanicas, heat resistance, corrosio resistentia, dimensional stability and processability. Twin-screw extrusion technology is the core processing technology of engineering plastic compounds, and the performance of extrusion equipment directly determines the quality, production efficiency and application effect of engineering plastic products.
We are committed to providing professional twin-screw extrusion solutions for engineering plastics processing, relying on our independently developed and manufactured HTS series extruders with high-torque gearboxes, which are specially designed for the processing characteristics and application needs of engineering plastics. This article will comprehensively elaborate on the performance characteristics, classification, processing difficulties of engineering plastics, the core role of twin-screw extrusion technology in engineering plastics processing, the advantages of our HTS series extruders and their targeted adaptation to engineering plastics, as well as the specific application fields, processing techniques and common problems and solutions. By supplementing detailed technical parameters, processing details and industry application cases, the article will be enriched to 3000-4000 words, providing comprehensive and professional reference for engineering plastics processing enterprises, technicians and relevant practitioners.
1. Overview of Engineering Plastics Industry and Core Performance Characteristics
1.1 Current Situation and Development Trend of Engineering Plastics Industry
Engineering plastics refer to a class of plastic materials that can be used as structural materials and bear mechanical loads in a wide temperature range. Compared with general plastics (such as polyethylene PE, polypropylene PP, polyvinyl chloride PVC), engineering plastics have more excellent comprehensive performance, and can meet the harsh use requirements in industrial production and high-end product manufacturing. In recent years, driven by the upgrading of downstream industries such as automotive lightweight, electrical and electronic intelligence, and medical device high-endization, the global engineering plastics market has shown a steady and rapid growth trend.
According to relevant industry data, the global engineering plastics market size has exceeded 100 billion US dollars, and it is expected to maintain a compound annual growth rate of 7%-10% in the next five years. Among them, Asia-Pacific is the world’s largest engineering plastics production and consumption market, ratio plus 55% of the global market share, mainly due to the rapid development of automotive, electrical and electronic industries in China, India and other countries, as well as the continuous improvement of industrial supporting capacity and technological innovation level. China, as the world’s largest engineering plastics consumer and producer, has a huge market demand, and the annual output and consumption are growing at a double-digit rate, especially in the fields of new energy vehicles, 5G communications, and medical devices, the demand for high-performance engineering plastics is showing an explosive growth trend.
The development trend of the engineering plastics industry is mainly reflected in five aspects: first, high performance and functionalization. With the continuous improvement of use requirements in downstream fields, engineering plastics are developing towards higher heat resistance, higher strength, better wear resistance and special functions (such as flame retardancy, antistatic, antibacterial, radiation resistance), to adapt to the harsh working environment of high temperature, high pressure, corrosion and radiation; second, lightweight and integration. In the automotive, aerospace and other fields, in order to achieve energy saving and emission reduction goals, engineering plastics are increasingly used to replace metal materials, and the integration of product design is becoming higher and higher, which can reduce the number of parts, simplify the production process and reduce costs; third, environmental protection and recyclability. With the strengthening of global environmental protection policies and the improvement of environmental protection awareness, the development and application of recyclable engineering plastics, biodegradable engineering plastics and environmentally friendly processing technologies have become the focus of the industry, reducing environmental pollution caused by plastic waste; fourth, intelligence and precision of processing equipment. Engineering plastics have high processing difficulty and strict quality requirements, which put forward higher requirements on processing equipment. Intelligent, precise and efficient twin-screw extruders and automatic production lines have become the mainstream of the industry, realizing real-time monitoring, automatic parameter adjustment and predictive maintenance of the processing process; fifth, diversification of application fields. Engineering plastics are gradually expanding from traditional automotive, electrical and electronic fields to new energy, medical, aerospace, construction and other emerging fields, opening up new market space.
Against this background, twin-screw extrusion technology, as the core processing technology of engineering plastic compounds, has become the key to improving the competitiveness of engineering plastics enterprises. Engineering plastics are sensitive to overheating and hydrolytic degradation, and have high requirements on processing temperature, shear force, residence time and temperature control precision. Our HTS series extruders are specially designed for the processing characteristics of engineering plastics, with high torque, high speed, precise temperature control and excellent dispersibility, which can effectively solve the processing difficulties of engineering plastics and help enterprises achieve high-quality, efficient and stable production.
1.2 Core Performance Characteristics of Engineering Plastics
Compared with general plastics and metal materials, engineering plastics have unique comprehensive performance, which determines their wide application in various industrial fields. The core performance characteristics of engineering plastics are mainly reflected in the following five aspects, which also put forward special requirements for their processing technology and equipment:
1.2.1 Excellent Heat Resistance and Cold Resistance
Engineering plastics have a wide temperature adaptation range, which can maintain good mechanical properties (vi, toughness, hardness) tum maximum temperatus ambitus. Compared with general plastics, quae plerumque amittunt mechanica proprietates 80-120℃, maxime ipsum materia plastica potest stabiliter operari ad 100-250℃, et specialis ipsum materia plastica (ut PEEK, PI) Potest etiam opus ad temperaturis supra CCC℃. Simul, engineering materia plastica etiam habent bonum frigus resistentia, quod potest ponere bonam duritiam in low temperaturis (infra -40℃), et non facile fragilis. Haec perficiendi opera materia plastica usui idoneam facit in ambitus asperos temperatus, ut eget engine partes (caliditas) ac velit electrica apparatu (humilis temperatus).
Egregia caloris resistentia in materia plastica machinalis maxime ob peculiares structuras hypotheticas (sicut annulos aromatici, heterocyclic annulos) et viribus intermolecularibus, which makes them not easy to melt and decompose at high temperatures. tamen, this also brings certain difficulties to processing: higher processing temperature is required to make them melt and plasticize, and precise temperature control is needed to avoid thermal decomposition.
1.2.2 Good Corrosion Resistance and Durability
Engineering plastics have excellent chemical stability and corrosion resistance, and are not easy to be corroded by acids, alkalis, salts, organic solvents and other chemicals. Compared with metal materials, which are easy to rust and corrode, engineering plastics have longer service life in harsh chemical environments. Exempli gratia, polyamide (PA) engineering plastics are resistant to most organic solvents and weak acids and alkalis; polycarbonate (PC) engineering plastics are resistant to corrosion by non-oxidizing acids and salts; polyphenylene sulfide (PPS) engineering plastics are resistant to corrosion by almost all chemicals except strong oxidizing acids.
In addition, engineering plastics have good weather resistance and aging resistance, and are not easy to degrade and age under the action of sunlight, rain, oxygen and other environmental factors, which ensures their long-term stable use in outdoor and harsh environments. This performance makes engineering plastics widely used in chemical equipment, outdoor electrical equipment, automotive exterior parts and other fields.
1.2.3 Easy Processing and High Production Efficiency
Compared with metal materials, engineering plastics have the advantages of easy processing, simple production process and high production efficiency. Metal materials usually need complex processing procedures such as forging, casting, machining, which have high energy consumption, low efficiency and high cost; while engineering plastics can be processed by extrusion, injection molding, blow molding and other methods, which can realize mass production, simplify the production process, reduce energy consumption and production cost. Exempli gratia, the processing cycle of an engineering plastic automotive part by injection molding is only a few seconds to tens of seconds, while the processing cycle of the same metal part may take several hours to several days.
tamen, engineering plastics also have certain processing difficulties: they are sensitive to overheating and hydrolytic degradation, and are easy to decompose if the processing temperature is too high or the residence time is too long; at the same time, quidam ipsum materia plastica (such as PA) have high water absorption, which affects the processing effect and product quality. ergo, it is necessary to use professional processing equipment and scientific processing techniques to ensure the processing quality.
1.2.4 Excellent Dimensional Stability and Electrical Insulation
Engineering plastics have good dimensional stability, and the shrinkage rate is small (usually 0.3%-1.5%) during processing and use, which can ensure the dimensional accuracy of products and avoid deformation. This performance is particularly important for high-precision parts, such as electrical connectors, automotive precision components, medical devices, etc. The good dimensional stability of engineering plastics is mainly due to their high crystallinity, low water absorption (except for some varieties such as PA) et viribus intermolecularibus.
In addition, most engineering plastics have excellent electrical insulation performance, which can maintain good insulation performance in a wide temperature range and frequency range, and are not easy to conduct electricity and arc. This makes engineering plastics widely used in electrical and electronic fields, such as wiring boards, cable ties, connectors, relays, motors and other electrical components.
1.2.5 Light Weight and High Specific Strength, Outstanding Wear Resistance
Engineering plastics have the characteristics of light weight (density is 1/3-1/5 of metal materials) and high specific strength (strength per unit weight is equivalent to or even higher than that of metal materials). Exempli gratia, the specific strength of glass fiber reinforced polyamide (PA66+GF30) is higher than that of ordinary carbon steel, which can effectively reduce the weight of products while ensuring the mechanical performance. This performance is particularly important in the automotive, aerospace and other fields that pursue lightweight and energy saving, which can reduce fuel consumption and carbon emissions.
Simul, engineering plastics also have outstanding wear resistance and friction resistance, and the friction coefficient is small, which can be used in the production of wear-resistant parts (such as gears, gestus, sliding blocks) without additional lubrication or with less lubrication, reducing the maintenance cost of products. Exempli gratia, polyoxymethylene (POM) engineering plastics have excellent wear resistance and are known as “plastic steel”, which is widely used in the production of automotive gears, electrical components and other wear-resistant parts.
1.3 Common Classification of Engineering Plastics
Engineering plastics can be divided into different types according to their chemical structure, performance level and application field. The common classification methods are as follows, which helps to better understand the processing characteristics and application scenarios of different engineering plastics, and select appropriate extrusion equipment and processing techniques:
1.3.1 Classification by Performance Level
According to the performance level, engineering plastics can be divided into general engineering plastics and special engineering plastics.
- General Engineering Plastics: They are the most widely used engineering plastics, with relatively mature production technology, moderate price and good comprehensive performance. The main varieties include polyamide (PA), polycarbonate (PC), polyoxymethylene (POM), polyethylene terephthalate (PET), polybutylene terephthalate (PBT), etc. General engineering materia plastica sunt maxime in eget, electrica et electronic, domum adjumenta et alia agros, ut eget partes, electrica connectors, domum appliance conchas, etc.
- Specialis Engineering Plastics: Habent excellentiores effectus (sicut superior calor resistentia, corrosio resistentia, mechanica proprietatibus) quam generalis ipsum materia plastica, sed productio technologia complexa est et pretium est altum. Pelagus varietates polyphenylene sulfide (PPS), polyether aut ketone (PEEK), polyimide (PI), polysulfone (PSU), polyethersulfone (PES), etc. Specialis engineering materia plastica sunt maxime in agris summus finis ut aerospace, medical devices, nova navitas, ac eget apparatu, ut aerospace components, medicinae implantatorum, summus temperatus repugnans electrica components, etc.
1.3.2 Classification by Chemical Structure
Secundum structuram chemicae catenae hypotheticae, ipsum materia plastica dividi in polyamide (PA), polycarbonate (PC), polyoxymethylene (POM), polyester (PET, PBT), polyphenylene sulfide (PPS), polyether aut ketone (PEEK), etc. Each type of engineering plastic has its own unique performance characteristics and processing requirements:
- Polyamide (PA): Also known as nylon, it has excellent mechanical strength, gerunt resistentia, toughness and chemical resistance, but has high water absorption, which affects the dimensional stability. Common varieties include PA6, PA66, PA11, PA12, etc. It is widely used in automotive parts (anni, gestus, intake manifolds), electrica connectors, textile fibers, etc.
- Polycarbonate (PC): It has excellent transparency, impact strength, heat resistance and electrical insulation, but has poor wear resistance and is easy to scratch. It is widely used in electrical and electronic fields (wiring boards, lamp covers), automotive fields (headlamp lenses, instrument panels), medical fields (medical containers), etc.
- Polyoxymethylene (POM): It has excellent wear resistance, friction resistance, dimensional stability and mechanical strength, and is not easy to absorb water. It is known as “plastic steel” et late in eget partes (anni, sliding blocks), electrica components (permutat, gestus), partes mechanicas, etc.
- Polyester (PET, PBT): DELICIAE optimum perspicuum est, calor resistentia et vi mechanica, et maxime in fibris, membrana, utres et alia agros; PBT est optimum chemica resistentia, electrica velit ac dispensando fluidum, et late in campis electrica et electronic (connectors, relays), eget partes, etc.
- Polyphenylene Sulfide (PPS): Optimum calorem habet resistentia (diu-terminus usus temperatus usque ad 200-220℃), corrosio resistentia, flamma retardatio et electrica velit, sed habet pauperem spissitudo. Est late in summus temperatus resistens electrica components, eget engine partes, eget apparatu, etc.
- Polyether Ether Ketone (PEEK): Habet praeclaram comprehensivam perficiendi, diu-terminus usus temperatus usque ad 250-300℃, bonum corrosione resistentia, mechanica vires et biocompatibility. It is mainly used in high-end fields such as aerospace, medicinae implantatorum, and high-temperature resistant electrical components.
1.3.3 Classification by Application Field
According to the application field, engineering plastics can be divided into automotive-grade engineering plastics, electrical-grade engineering plastics, medical-grade engineering plastics, aerospace-grade engineering plastics, etc. Different application fields have different requirements on the performance of engineering plastics. Exempli gratia, automotive-grade engineering plastics require good heat resistance, impact strength and weather resistance; electrical-grade engineering plastics require good electrical insulation and flame retardancy; medical-grade engineering plastics require good biocompatibility and sterility; aerospace-grade engineering plastics require good high-temperature resistance, low weight and high strength.
2. Core Processing Technology of Engineering Plastics: Twin-Screw Extrusion Technology
Engineering plastics processing mainly includes extrusion, injection molding, blow molding, molding and other methods, among which twin-screw extrusion technology is the core technology for the production of engineering plastic compounds (such as modified engineering plastics, reinforced engineering plastics) and semi-finished products (ut tibiae, pretium, fibers). Compared with single-screw extrusion technology, twin-screw extrusion technology has the advantages of strong shearing force, good mixing effect, precise temperatus imperium, short residence time and strong adaptability to raw materials, which can effectively solve the processing difficulties of engineering plastics (such as sensitivity to overheating and hydrolytic degradation, poor mixing effect, low processing efficiency) and ensure the quality of engineering plastic products.
2.1 Processing Difficulties of Engineering Plastics and Requirements for Extrusion Equipment
Ut ante, ipsum materia plastica est optimum comprehensive perficientur, sed eorum processus difficultas altior est quam materia plastica generalis, maxime propter specialem hypotheticam structuram et perficientur characteres. Praecipuae processus difficultates machinalis materia plastica et debita instrumenta ad extrusionem requisita sunt:
2.1.1 Sensitivum ad Overheating et Hydrolytic Degradation
Maxime ipsum materia plastica (such as PA, PBT, PPS) sunt sensitivo ad overheating et hydrolytic degradation. Si processus caliditas nimis alta vel commorationis tempore in extruder nimis longum est, hypothetica torquem ipsum plastic et conteram, inde in scelerisque compositione, quae redigam ad proprietatibus mechanicis, calor resistentia et alia observantia producti, et causa coloris, carbonization et alia vitia. In addition, quidam ipsum materia plastica (such as PA) have high water absorption, et humor in materia degradationem hydrolyticam faciet in processus processus summus temperatus, qualis est circa productum.
Hoc ponit duo key necessaria ad extrusionem apparatu: first, precise temperatus imperium facultatem, quae stricte moderari potest processus temperatus intra meliorem range of engineering plastics, loci vitare overheating, et temperatus imperium subtilitatem attingere debet ±1℃; second, paulisper commorationis tempore, quod tempus reducere potest, quo materia in dolio extruder remanet, vitare scelerisque compositione et dejectione hydrolytica. Extruders cochlea-geminus commoda temporis commorationis (usually 1-5 minuta) et precise temperatus imperium, quae magis apta sunt ad ipsum materias materias expediendas quam unius cochleae extruders (commorationis tempore 5-10 minuta).
2.1.2 High Requirements on Mixing and Dispersing Effect
In ipsum materia plastica processus, saepe necesse est addere adiectiua (ut vitrum fibra, fibra carbonis, talc, flamma retardantes, compatibilizers) ut amplio observantia productum (ut confirmat, duratio, flamma retardant). Exempli gratia, fibra vitrea ad PA addit ad vires suas ac stabilitatem dimensivam emendare potest; flammae retardantes ad PBT addit ut meliorem flammam retardant. Uniformis mixtio et dispersio adiectiua in matrice plasticae machinatione pendet ad effectum producti finalis.. Si mixtio et dissipatio effectus est pauper, ad determinationes agglomerate, inde in inaequale perficientur de productum, et etiam redigendum proprietatibus mechanicis producti.
Hoc requirit extrusionem instrumenti ad validam tondendam vim et facultatem miscendi. Geminus-cochlea extruders capere intermeshing cooperatores rotating vel contraria rotating gemini stupra structuram, et motus relativus inter cochleas generare potest vim validam tondendam et vim liquefacientem, quae plene agglomeratas infringere adiectiuarum, ut adiectiua uniformiter in ipsum plastic matrix, et curare mixtionem et dissipationem effectus. In addition, modularis consilium cochlea-cochleae diversa elementa cochleae libere iungere possunt (ut elementa importans, miscentes elementa, tonsurae elementis) secundum genus ipsum plastic et determinatio, porro meliore mixtione et dispersione effectus.
2.1.3 Princeps Requisita in gere resistentia Equipment
In processus aucti ipsum materia plastica (such as glass fiber reinforced PA, carbon fiber reinforced PPS), the added glass fiber, carbon fiber and other modifiers have high hardness, which will cause serious wear to the screw and barrel of the extruder during the extrusion process. If the screw and barrel have poor wear resistance, they will be worn quickly, resulting in reduced shearing force and mixing capacity of the extruder, affecting the product quality 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. Our HTS series extruders adopt imported wear-resistant alloy steel for the screw and barrel, and undergo bimetallic composite treatment or laser cladding treatment, quae maxime meliores sunt resistentiae et corrosionis resistentiae cochleae et dolii, et potest accommodare ad processus confirmandi ipsum materia plastica magna duritia adiectiua.
2.1.4 Princeps Requirements in Processing Fluidity et Impetus Imperium
Quidam ipsum materia plastica (ut PPS, PEEK) habere excelsum viscositas et pauper dispensando fluidum, quae requirunt extruder ad validam facultatem et pressuram potestatemque facultatem praebendi facultatem obtinendi lenis progressionis extrusionis. Si importat facultatem insufficiens vel pressura imperium inconstans est, et faciam inaequalem celeritatem extrusionem, instabiles productum magnitudine, nec non apparatu venenatis.
Didymus cochlea extruders validam habent facultatem et firmum pressionis imperium facultatem. Cochleas geminorum intermixtio potest generare vim validam flare, which can effectively convey high-viscosity engineering plastic materials; at the same time, the extruder is equipped with a high-precision pressure sensor, which can monitor the extrusion pressure in real time and adjust the screw speed and feeding speed automatically to ensure the stability of the extrusion pressure and the smooth progress of processing.
2.2 Working Principle and Process Flow of Engineering Plastics Twin-Screw Extrusion
The twin-screw extrusion process of engineering plastics is a complex physical and chemical process, which involves the interaction of multiple factors such as temperature, pressura, shear force and time. The core purpose is to melt and plasticize the engineering plastic raw materials and modifiers, mix them uniformly, and then extrude them into the required shape (such as particles, tibiae, pretium, fibers) through the die head. The specific working principle and process flow are as follows:
2.2.1 Raw Material Pretreatment
Raw material pretreatment is the foundation of engineering plastics extrusion processing, which directly affects the processing effect and product quality. The raw materials of engineering plastics mainly include engineering plastic resin (such as PA, PC, POM), modifiers (ut vitrum fibra, fibra carbonis, talc, flamma retardantes), compatibilizers, lubricants and other additives. The pretreatment steps are as follows:
- Drying Treatment: Maxime ipsum materia plastica (such as PA, PBT, PPS) have high water absorption, and the moisture in the raw materials will cause hydrolytic degradation during high-temperature processing, resulting in product defects (such as bubbles, cracks, reduced mechanical properties). ergo, the raw materials must be dried before processing. The drying temperature and time are determined according to the type of engineering plastic: exempli gratia, PA6 is dried at 80-100℃ for 4-6 horae, PA66 is dried at 100-120℃ for 6-8 horae, PBT is dried at 120-140℃ for 2-4 horae, PPS is dried at 150-160℃ for 3-5 horae. The moisture content of the dried raw materials should be controlled below 0.1%-0.2%.
- Premixing Treatment: According to the formula ratio, the dried engineering plastic resin, modifiers and additives are put into a high-speed mixer for premixing. The purpose of premixing is to make the modifiers and additives uniformly adhere to the surface of the resin particles, improve the mixing effect during extrusion, and avoid local agglomeration of modifiers. The mixing speed is generally 800-1200 rpm, and the mixing time is 5-10 minuta. For some modifiers with poor compatibility (such as glass fiber and PA), a compatibilizer should be added during premixing to improve the compatibility between the modifier and the resin.
- Crushing and Sieving: For engineering plastic resins with large particle size or modifiers with uneven particle size (ut vitrum fibra), crushing and sieving treatment should be carried out to ensure the uniformity of raw materials and avoid affecting the mixing and dispersing effect during extrusion. The particle size of the crushed raw materials should be controlled at 20-40 mesh.
2.2.2 Feeding and Conveying
The premixed raw materials are 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 to prevent the raw materials from absorbing moisture again during feeding.
2.2.3 Exustio, 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, and the pressure in the extrusion cavity gradually increases (generally 5-15MPa).
Simul, the materials are subjected to strong shear force and friction force generated by the relative movement between the screws and the barrel, as well as between the screw flights. The shear force and friction force can fully break the agglomerates of modifiers, make the modifiers uniformly dispersed in the melted engineering plastic resin, and promote the fusion and compatibility between the modifier and the resin. 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 engineering plastic resin gradually melt and plasticize.
The barrel of the extruder is usually divided into 4-6 temperature control sections (feeding section, melting section, mixing section, homogenizing section, die head section), and the temperature of each section is precisely controlled according to the type of engineering plastic. Exempli gratia, when processing PA66+GF30 (glass fiber reinforced PA66), the temperature of the feeding section is 120-140℃, the melting section is 250-260℃, the mixing section is 260-270℃, the homogenizing section is 250-260℃, and the die head section is 240-250℃. The precise temperature control can ensure that the resin is fully melted without thermal decomposition, and the modifiers are uniformly dispersed.
2.2.4 Extrusion and Shaping
The fully melted, mixed and dispersed material is pushed to the die head of the extruder by the screws. The die head is designed according to the shape of the final product: for the production of engineering plastic compounds (granula), the die head is equipped with multiple circular die holes (the number and size of die holes are determined according to the particle size of the granules); for the production of pipes, pretium, fibers, the die head is designed into corresponding shapes (such as circular die for pipes, flat die for sheets).
The material is extruded from the die head at a high speed to form continuous semi-finished products (such as strips for granules, tibiae, pretium). The temperature of the die head is slightly lower than that of the homogenizing section, which can prevent the material from decomposing due to excessive temperature and ensure the shaping effect of the semi-finished products. The extrusion speed is controlled according to the type of engineering plastic and the shape of the product, generally ranging from 0.5-5m/min.
2.2.5 Cooling and Solidification
The extruded semi-finished products are sent to a cooling device for rapid cooling and solidification. The cooling method is determined according to the shape of the product: for strips (granule production), water tank cooling is usually used, and the cooling water temperature is controlled at 20-30℃, and the cooling time is 2-5 minuta; for pipes and sheets, air cooling or water spray cooling is used, and the cooling speed should be controlled to avoid product deformation due to uneven cooling. Rapid cooling can make the semi-finished products solidify quickly, maintain the shape and size of the products, and improve the mechanical properties of the products.
2.2.6 Cutting and Post-Processing
After cooling and solidification, the semi-finished products are processed into the final product through cutting or other post-processing steps. For the production of engineering plastic compounds (granula), the cooled strips are sent to a granulator for cutting, and the granulator is equipped with a rotary knife, which can cut the strips into granular products with uniform size (the particle size is generally 2-5mm, which can be adjusted according to customer needs). For the production of pipes and sheets, the cooled semi-finished products are cut into the required length through a cutting machine; for the production of fibers, the cooled filaments are drawn and wound to form fiber products.
In addition, the final product also needs to undergo post-processing steps such as screening, inspection and packaging. The screening step is to remove unqualified products (such as too large, too small or agglomerated particles); the inspection step is to detect the performance (such as mechanical strength, heat resistance, dimensional accurate) of the product to ensure that it meets the customer’s requirements; gradus packaging est ad sarcinam producti qualificati in modo signato et umore probato, ne productum umorem absorbeat et qualitatem afficiat..
2.3 Key factores afficiens ipsum Plastics Twin-Screw extrusionem effectus
Effectus geminae stupra extrusionem directe afficit qualitatem et observantiam ipsum plastic products. Plures factores afficientes extrusionem effectus, maxime inter rudis materias, formula ratio, premixing effectus, extrusionem parametri et mori caput structuram. Has factores clavium compescere et adaptationes scientificas efficere possunt stabilitatem extrutionis effectus et constantiam producti qualitatis.
2.3.1 Rudis Materialis
Genus, particula magnitudine, humorem contentum et puritatem materiae rudis effectum magnum habent impulsum in extrusionem. Exempli gratia, the particle size of engineering plastic resin and modifiers should be uniform; if the particle size is uneven, it will lead to uneven melting and mixing of materials. The moisture content of raw materials must be strictly controlled below 0.1%-0.2%; if the moisture content is too high, it will cause hydrolytic degradation of the material and bubbles in the product. The purity of raw materials is also very important; impurities in raw materials (such as metals, stones, pulvis) will not only affect the product quality, but also wear the screw and barrel of the extruder, and even cause equipment blockage.
2.3.2 Formula Ratio
The formula ratio of engineering plastic compounds (the ratio of resin, modifiers and additives) is the key to determining the performance of the product. Genus et dosis adiectiuum determinari debent secundum exigentias producti perficiendi. Exempli gratia, addendo 20%-40% fibra vitrea ad PA vim suam ac stabilitatem dimensionalem signanter emendare potest, sed fibrarum vitrearum nimia durities et processus fluiditas producti reducet. Genus et dosis additivorum etiam rationabiliter congruere oportet: compatibilizers possunt emendare convenientiam inter adiectiua et resina, ac dosis est fere 0.5%-2%; lubricants reducere attritu materiae et apparatu, meliorem dispensando fluidum, ac dosis est fere 0.3%-1%; facilisis potest impedire materiam ab scelerisque oxidatio degradationis in processui, ac dosis est fere 0.1%-0.5%.
2.3.3 Effectus praemixtis
Praemixtio est fundamentum extrusionem processus. The uniformity of premixing directly affects the mixing and dispersing effect of modifiers during extrusion. If the premixing is uneven, the modifiers cannot be uniformly adhered to the surface of the resin, resulting in local agglomeration of modifiers, uneven mixing of materials during extrusion, and reduced product performance. To ensure the premixing effect, it is necessary to control the mixing speed, mixing time and mixing temperature: the mixing speed is 800-1200 rpm, the mixing time is 5-10 minuta, and the mixing temperature is controlled at 40-60℃ (appropriate temperature can improve the adhesion of additives and promote uniform mixing).
2.3.4 Extrusion Parameters
Extrusion parameters are the most important factors affecting the extrusion effect, mainly including screw speed, extrusion temperature and extrusion pressure.
- Screw Speed: The screw speed of twin-screw extruders for engineering plastics generally ranges from 100 to 1000 rpm. Our HTS series extruders can reach a maximum speed of 1000 rpm. The higher the screw speed, the greater the shear force and friction force received by the materials, the better the mixing and dispersing effect of modifiers, and the higher the production efficiency. tamen, if the screw speed is too high, the residence time of the materials in the extrusion cavity is too short, resulting in incomplete melting of the resin, insufficient mixing of materials, and uneven product quality; if the screw speed is too low, the shear force and friction force are insufficient, the modifiers cannot be fully dispersed, and the production efficiency is low. The screw speed should be adjusted according to the type of engineering plastic and the type of modifier: for high-viscosity engineering plastics (ut PPS, PEEK), a lower screw speed is needed to ensure sufficient melting and mixing; for reinforced engineering plastics (such as glass fiber reinforced PA), a higher screw speed is needed to ensure the uniform dispersion of glass fiber.
- Extrusion Temperature: The extrusion temperature is the key to ensuring the melting and plasticization of engineering plastics. The temperature of each section of the barrel and die head must be precisely controlled according to the type of engineering plastic. The temperature of the feeding section is lower (slightly higher than the drying temperature of the raw materials), which is mainly to prevent the materials from caking and ensure smooth feeding; temperatus exustio sectionis est medium, quod maxime promovendum resinae liquefactionem et plasticizationem; temperatus mixtionis sectione est altior, quae maxime augendae tondendae et permixtionis effectus, et uniformis dissipatio adiectiua promovere; temperatura sectionis homogenizationis est leviter inferior quam permixtio sectionis, quod maxime curare est uniformis caliditas et viscositas materiae, ac vitare scelerisque compositione; caliditas capitis sectionis alea leviter inferior quam sectione homogenizing, quod est efficere ut formatio effectus semi-perfecti products. Temperatus moderatio praecisionem attingere debet ±1℃ ad vitandam exustionem localem et scelerisque compositionem materialium.
- Pressura extrusionem: extrusio pressura machinalis materia plastica gemini cochlea extrusionem plerumque iugis a 5 ut 15MPa*. Pressio in cavum extrusionem maxime determinatur a ratione compressionis cochleae, alea foraminis magnitudine ac celeritate cochleae. Quod altius extrusionem pressura, in melius permixtione et dispersione materiae effectum, et densiore producto. tamen, si pressura est nimis alta, industriam consummationem et usum armorum augebit, et mori caput ad scandalum faciam; si pressura est preme, quod materiae non potest plene compressa et mixta, factum est solutam, et in perficientur inconstans est. Extrudere pressionem aptari debet secundum genus machinalis plasticae et figurae producti: summus viscositas materiae et products cum parvis foraminibus alea, a higher extrusion pressure is needed.
2.3.5 Die Head Structure
The die head structure mainly includes the shape, size and number of die holes, which directly affects the shaping effect and quality of the product. For the production of engineering plastic compounds (granula), the die head should be equipped with multiple uniform die holes, and the size of the die holes should be matched with the particle size of the product; for the production of pipes and sheets, the die head should be designed according to the shape and size of the product, and the flow channel of the die head should be smooth to avoid material accumulation and local overheating. The die head should also be equipped with a temperature control device to ensure the uniform temperature of the die head and the stable shaping of the product.
3. Our HTS Series Extruders: Professional Solutions for Engineering Plastics Processing
Diu sumus occupati in investigationibus, progressus et productio summus perficientur gemellis cochlea extruders, et exaggeratus dives usus in agro ipsum materia plastica processus. Secundum processus characteres ipsum materia plastica (sensus overheating et hydrolytic degradation, princeps requisita permixtis ac dissipatis effectus, princeps viscositas) et applicationem necessitates, nos elaboraverunt HTS series geminae cochlea extruders specialiter ipsum materia plastica processus. Nostra series extruders HTS adoptat summus torques gearboxes, cum certis torques de 14Nm/cm³ et celeritatem maximam usque ad 1000rpm, quae potest altius output, breviore commorationis tempore, melius dissipatio et accuratior temperatus imperium, perfecte accommodans ad processus necessitates variarum ipsum materia plastica.
3.1 Core Commoda HTS Series Extruders for Engineering Plastics Processing
3.1.1 Princeps Torque et Casio, Princeps Productio Efficens
Engineering materia plastica habent excelsum viscositatem et pauperes processus fluiditatem, quae requirunt extruder ad validum torquem et facultatem portandi. Nostrae HTS series extruders supremos torques gearboxes independenter evoluta et fabricata a nobis capiunt (HTS PLUS series et HTS SUPER series) aut importari ab ducens artifices Europae (HTS RATIO FUNDAMENTALIS series), cum torque de certis 14Nm / cm, quae multo altior est quam extruders cochleae ordinariae geminae (generalis Aureus est 8-12Nm/cm³). Princeps Aureus consilium efficit ut extruder stabiliter deferat summus viscositas machinalis materiarum plasticarum, avoid material accumulation and equipment blockage, and improve the stability of the extrusion process.
Simul, the HTS series extruders have a high speed design, with a maximum speed of up to 1000rpm. The high speed can generate strong shear force and mixing force, quae plene agglomeratas infringere adiectiuarum, make the modifiers uniformly dispersed in the resin matrix, and improve the mixing and dispersing effect. In addition, the high speed design also greatly improves the production efficiency: compared with ordinary extruders, the production efficiency of HTS series extruders can be increased by 30%-50%, which can meet the large-scale production needs of engineering plastics enterprises.
3.1.2 Short Residence Time, Effectively Avoiding Thermal Degradation
As engineering plastics are sensitive to overheating and hydrolytic degradation, the residence time of materials in the extruder is crucial. Nostra series HTS extruders structuram cochleae optimized cochleae ac dolii design, cum brevi commorationis tempore solum 1-3 minuta, quod multo brevius est extruderorum cochlearum vulgarium (5-10 minuta) et extruders unum stupra- (10-15 minuta). Tempus breve commorationis efficaciter potest minuere contactum temporis inter materiam et caliditatem, vitare scelerisque compositionem et deiectionem hydrolyticae materiae, et curent proprietates mechanicas et calor resistentia producti.
In addition, pressione HTS series extruders adoptat modularis consilium, et diversis elementis cochleae libere componi possunt secundum genus machinationis plasticae, quod potest adhuc tempus materiae ad adjust residentiae, ut diversa genera ipsum materia plastica obtineat meliorem commorationis tempore processus.
3.1.3 Securus Temperature Imperium, Stable Performance
The HTS series extruders adopt an advanced intelligent temperature control system, which can realize precise control of the temperature of each section of the barrel and the die head. The temperature control precision can reach ±1℃, quae stricte moderari potest processus temperatus intra meliorem range of engineering plastics, avoid local overheating and thermal decomposition of the material. The temperature control system is equipped with a real-time monitoring and alarm function: if the temperature of any section exceeds the set range, the system will issue an alarm prompt in time, and even automatically adjust the heating power or shut down the equipment if necessary, to avoid equipment failure and product quality problems.
In addition, the barrel of the HTS series extruders 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 product.
3.1.4 Excellent Mixing and Dispersing Effect
The HTS series extruders adopt an intermeshing co-rotating twin-screw structure, with a reasonable screw pitch, lead and compression ratio design. The intermeshing and rotating of the twin screws can generate strong shear force and kneading force, quae plene agglomeratas infringere adiectiuarum (ut vitrum fibra, fibra carbonis, talc), make the modifiers uniformly dispersed in the engineering plastic resin matrix, et curare mixtionem et dissipationem effectus. The mixing uniformity of the HTS series extruders can reach more than 95%, quae multo altior est quam extruders cochleae ordinariae geminae (85%-90%).
The screw of the HTS series extruders adopts a modular design, and different types of screw elements (ut elementa importans, miscentes elementa, tonsurae elementis) libere componi possunt secundum genus ipsum plastic et determinatio. Exempli gratia, Cum processus aucti ipsum materia plastica vitreis fibra, plura elementa tonsurae configurari possunt ad effectum augendae tonsurae et curationem fibrarum vitrearum uniformem dispersionem; Cum dispensando ipsum materia plastica magna viscositas (ut PPS), plura elementa mixtionis configurari possunt ut effectum mixtionis meliorem efficiant et uniformem viscositatem materiae conservent.
3.1.5 Princeps gere Resistentia, Long Service Vita
In processus aucti ipsum materia plastica (such as glass fiber reinforced PA, carbon fiber reinforced PPS), adiectis adiectis habent duritiem, quae gravem gerunt ad cochleae et dolii extruder. Nostrae HTS series extruders adoptant GENEROSUS materias resistentes et provectus fabricandi technology ut labore resistentia core components.
Cochleae et dolium HTS seriei extrudorum e ferro obsistente admixto ferro importato fiunt (ut 38CrMoAlA), and undergo bimetallic composite treatment or laser cladding treatment. Duritia superficiei cochleae et dolii ≥65 HRC . pervenire potest (HTS RATIO FUNDAMENTALIS series) et ≥70 HRC (HTS PLUS series et HTS SUPER series), quae validissimo labore resistentia et corrosione resistentia habet, et efficaciter potest resistere indumentis per summum duritiem adiectiua. Hoc ministerium magnopere porrigit vitam cochleae et dolii: servitium vitae cochleae et dolii HTS series extruders is 2-3 tempore illo ordinarii extruders, reducendo frequentiam componentis tortor et sustentationem sumptus de apparatu.
In addition, nos etiam deprehensionem professionalem lapsum muneris cochleae et dolii praebemus. Nostra turma technica regulariter lapsum cochleae et dolii pro clientibus deprehendere, normam singula lapsum fama, et deinceps iaculis tortor et sustentationem suggestiones, cursus ut ipsum solum reponere components, cum opus sit, vitatis necesse vastum.
3.1.6 Lata Application dolor, Fortis flexibilitate
HTS series extruders late applicationem range, quae possunt accommodare ad processus necessitates variarum machinarum plasticarum, comprehendo generalis ipsum materia plastica (PA, PC, POM, PET, PBT) et specialis ipsum materia plastica (PPS, PEEK, PSU, PES). Extruders etiam adaptare possunt processus variarum mutationum machinarum materia plastica, ut confirmet ipsum materia plastica (vitreum alimentorum fibra aucti, carbonis alimentorum fibra aucti), duratum ipsum materia plastica, flammea retardans ipsum materia plastica, antistatic ipsum materia plastica, etc.
Consilium modularis seriei HTS extruderorum (cochlea, dolium, mori caput, etc.) facit postea components commodius et velox. Cum customers opus ad adjust in genus productum (such as switching from PA processing to PPS processing) or modify the formula, they only need to replace the corresponding components, without replacing the entire equipment, which reduces the cost of equipment transformation and improves the flexibility and adaptability of the equipment. In addition, the HTS series extruders can also be matched with different auxiliary equipment (ut summus celeritate mixers, dryers, coolers, granulators, screening machines, packaging machines) to form a complete automatic production line, realizing continuous production from raw material pretreatment to product packaging.
3.1.7 Intelligent Control, Easy Operation and Maintenance
The HTS series extruders adopt a PLC intelligent control system and a touch screen operation interface, which is simple and intuitive, easy to operate. The system can store multiple sets of product formulas and processing parameters. Cum customers producendum genera ipsum materia plastica, non solum necesse est appellare formulam respondentem et parametri, sine crebris debugging, quae salvet et melioris productio efficientiam.
Systema quoque instructum est functioni magnae temporis reali, quod potest monitor key processus parametri extrusionem (ut temperatus, pressura, cochlea celeritas, celeritas pascens) in ipsa hora, et recordarentur productio notitia (ut output, dispensando tempore) nam postea quaesitio et analysis. Nam HTS Super serie extruders, nos quoque munus nubem imperium praebere, quod potest esse remotum moduli commensuratio, productio notitia magna et predictive sustentationem armorum, intellegentes intelligentes productio procuratio.
In addition, extruders HTS ad rationabile consilium capere seriem, quod facit ad sustentationem commodius. Cochlea, dolium, caput mori et alia membra disiungi et celeriter congregari possunt, quae sustentationem et laboris intensionem reducet. Nostrae post-sales ministerium quadrigis professionalem institutionem providebit, committens et erudiens officia pro customers, cursus ut elit uti apparatu blande.
3.2 HTS Series Extruder Product Genera ac Accommodatio ad Engineering Plastics
Ut in variis processui necessitatibus conveniant inceptis plasticarum machinalis diversarum squamae et generum productorum, nos tres principalis productum genera in seriem HTS launched: HTS RATIO FUNDAMENTALIS series, HTS PLUS series et HTS SUPER series. Unaquaeque series proprietates suas habet et missionum accommodatio iaculis, quae a clientibus eligi possunt secundum scalam productionis propriae, genus productum, budget et alia.
3.2.1 HTS BASIC Series Extruders: Flexible and Cost-Effective Choice for General Engineering Plastics
The HTS BASIC series extruders are a cost-effective product series designed for engineering plastics processing enterprises with medium and small production scales or initial entry into the industry. This series of extruders uses medium-torque gearboxes from leading European manufacturers, which have the advantages of stable performance, low noise, high efficiency and long service life. The medium-torque design (specific torque 10-12Nm/cm³) can meet the processing needs of most general engineering plastics (such as PA6, PA66, POM, PET, PBT) and low-to-medium modified engineering plastics (such as glass fiber reinforced PA with filling amount ≤30%).
In terms of structural design, the HTS BASIC series extruders adopt a twin-screw parallel co-rotating structure, with a screw diameter ranging from 30mm to 65mm, and a compression ratio of 4～8, which can be adjusted according to the type of engineering plastic. 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. The extruder is equipped with a PLC control system and a touch screen operation interface, which can realize automatic feeding, automatic temperature control, automatic pressure control and automatic cutting, and is simple and easy to operate.
The production capacity of the HTS BASIC series extruders ranges from 100kg/h to 500kg/h, quae apta est ad medium et mediocrem machinationem materiarum materia- rum expediendas conatibus, quae maxime generant ipsum materias materias et humiles ad medium modificatum ipsum materias materias. Una e maximis commoditatibus huius seriei est ut per varias coniunctiones configurationes varias optiones flexibiles praebere possit. Customers potest eligere diversis elementis stupra, mori capitibus, cogitationes pascens, remittit cogitationes et post processus apparatu ad propria productum genera, productio facultatem ac budget, ita ut linea productio propriis necessitatibus congruat. HTS RATIO FUNDAMENTALIS series extruders habet rationabile pretium, quod potest auxilium conatibus reducere initialis investment pretium.
3.2.2 HTS PLUS Series Extruders: Summus euismod Electio pro Engineering Plastics et Modified Products
The HTS PLUS series extruders adopt high-torque gearboxes independently developed and manufactured by us, cum torque de certis 14Nm / cm, which has stronger torque and load-bearing capacity than the HTS BASIC series. This series of extruders is mainly designed for the processing of high-performance engineering plastics, high-modified engineering plastics and special engineering plastics (ut PPS), which is suitable for medium and large-scale engineering plastics processing enterprises that pursue high performance and high efficiency.
The HTS PLUS series extruders have a screw diameter ranging from 65mm to 110mm, a compression ratio of 5～10, and a screw speed range of 200～800 rpm. The screw and barrel adopt bimetallic composite treatment, which has higher wear resistance and corrosion resistance (surface hardness ≥65 HRC), et potest accommodare ad processus aucti ipsum materia plastica magna saturitatem moles (ut fibra vitrea auctus PA saturitate moles 30%-50%, carbon fiber reinforced PPS) et summus duritia adiectiua. Extruder instructus cum temperatura moderatio intelligentis provectae et altae subtilitatis pressionis sensoris, quod potest comprehendere precise imperium extrusionem parametri et real-time vigilantia productionis data, in tuto collocandum est extrusionem processum et qualitatem producti.
Faciendi capacitas HTS PLUS seriei extrudorum iugis ab 500kg/h ad 2000kg/h, quae apta est ad productionem magnarum machinarum plasticarum generalium, high-modified engineering plastics and special engineering plastics (ut PPS). Haec extruderorum series optimum effectum habet permixtionem et dissipantem, paulisper commorationis et altum productionem efficientiam, which can effectively solve the processing difficulties of high-viscosity and high-modified engineering plastics, and help enterprises improve product quality and production efficiency.
3.2.3 HTS SUPER Series Extruders: Top-End Choice for High-End Engineering Plastics
The HTS SUPER series extruders adopt the latest ultra-high torque transmission device independently developed by us, cum certis torques de 14Nm/cm³ et celeritatem maximam usque ad 1000rpm. Aiming at the high torque and high speed characteristics of this series, the structural design of each key component of the extruder has been completely optimized, which is our highest-end extruder series, representing the advanced level of China’s extruder development. This series of extruders is mainly designed for the processing of high-end special engineering plastics (ut PEEK, PI, PSU, PES) and high-performance modified engineering plastics (such as carbon fiber reinforced PEEK, glass fiber reinforced PI), which is suitable for large-scale high-end engineering plastics processing enterprises that pursue high precision, high performance and intelligence.
The HTS SUPER series extruders have a screw diameter ranging from 80mm to 130mm, a compression ratio of 6～12, and a screw speed range of 250～1000 rpm. The screw and barrel adopt imported wear-resistant alloy steel and laser cladding technology, which has extremely high wear resistance and corrosion resistance (surface hardness ≥70 HRC), and can adapt to the processing of special engineering plastics with high temperature resistance, high viscosity and high-hardness modifiers. The extruder is equipped with an intelligent PLC + cloud touch screen control system, quod potest esse remotum moduli commensuratio, production data monitoring, predictive maintenance of equipment and data analysis, intellegentes intelligentes productio procuratio.
The production capacity of the HTS SUPER series extruders ranges from 1000kg/h to 3000kg/h, which is suitable for the large-scale production of high-end special engineering plastics and high-performance modified engineering plastics. This series of extruders has the advantages of high precision, strong customization, multi-function and stable performance, which can meet the most stringent processing requirements of high-end engineering plastics. The short residence time (1-2 minuta) and precise temperature control can effectively avoid the thermal decomposition of special engineering plastics, ensuring the excellent performance of the product. In addition, the HTS SUPER series extruders can also be customized according to the special processing needs of customers, providing personalized solutions.
3.3 Electio Consilia ad Engineering Plastics Extruders
Cum eligens gemelli cochlea extruders ad ipsum materia plastica processus, inceptis opus est ut comprehendantur propriae productionis necessitates, genera productum, dispensando scale, budget et alia res est ut instrumenta selecta actuali processui necessitatibus occurrere possint ac maximis beneficiis oeconomicis afferant. Sequuntur quaedam suggestiones specificae selectae:
3.3.1 Determinare Extruder Series Secundum genus ipsum Plastics
Diversa genera ipsum materia plastica habent diversas processui requisita, delectu extruder quod determinet seriem. Nam generalis ipsum materia plastica (PA6, PA66, POM, PET, PBT) humili gradu modificatio (≤30% moles saturitatem), HTS basic series sufficit ad processui necessitatum. Its medium torque and flexible configuration can balance processing effect and cost, which is very suitable for small and medium-sized enterprises that just start to engage in engineering plastics processing or focus on general-purpose products. For high-modified engineering plastics (filling amount 30%-50%, such as glass fiber reinforced PA, carbon fiber reinforced PBT) and special engineering plastics with moderate processing difficulty (ut PPS), the HTS PLUS series is the preferred choice. Its high torque of 14Nm/cm³ and excellent mixing and dispersing capacity can effectively solve the problem of uneven dispersion of high-content modifiers, and its wear-resistant screw and barrel can adapt to the wear of hard modifiers, ensuring stable production. For high-end special engineering plastics (PEEK, PI, PSU, PES) and high-performance modified engineering plastics (filling amount ≥50%, such as carbon fiber reinforced PEEK), the HTS SUPER series must be selected. Et ultra alta torque, maximum 1000rpm celeritatem et plene optimized key compaginem obire potest cum magno viscositate, caliditas resistentia et stricte processus exigentias materiae summus finis, vitare scelerisque compositione ac materia degradation, et curare summus effectus in ultima uber.
3.3.2 Determinare stupra diametri et productionis capacitatem secundum Processing Scale
Cochlea diametri cochlea extruder geminae capacitatis productionem directe determinat, et inceptis opus est eligere aptam cochleam diametri secundum propriam productionis scalam et ordinem exigendi. Ad minima productio (100kg/h* – 500kg/h*), ut parva, batch customization, productum investigationis et progressionem vel ordines parvum, in HTS series fundamentalis stupra diametri 30mm – 65mm convenit; ad medium-scala productio (500kg/h* – 2000kg/h*), such as mass production of general modified engineering plastics, the HTS PLUS series with screw diameter of 65mm – 110mm can meet the demand; for large-scale production (1000kg/h* – 3000kg/h*), such as large-scale production of high-end special engineering plastics or large orders from downstream enterprises, the HTS SUPER series with screw diameter of 80mm – 130mm is the best choice. It should be noted that when selecting, enterprises should not blindly pursue large production capacity. They should also consider the fluctuation of order quantity. If the order quantity is unstable, they can choose equipment with adjustable speed and flexible production capacity (such as HTS BASIC series with frequency conversion speed regulation function) to avoid waste of equipment resources and energy.
3.3.3 Consider the Modification Demand and Mixing Effect
If the enterprise’s main products are modified engineering plastics, the mixing and dispersing effect of the extruder is the key factor to be considered. For products that need to add a variety of modifiers (such as flame retardants, compatibilizers, reinforcing agents) at the same time, it is necessary to select extruders with excellent mixing performance, such as HTS PLUS series and HTS SUPER series with modular mixing screw elements. These two series can freely combine conveying elements, mixing elements and shearing elements according to the type of modifier, adjust the mixing intensity and residence time, and ensure that various modifiers are uniformly dispersed in the resin matrix. Exempli gratia, when processing flame-retardant modified PBT, more mixing elements can be configured to ensure the uniform dispersion of flame retardants, avoid local flame retardancy insufficiency; when processing glass fiber reinforced PA, more shearing elements can be configured to break the agglomeration of glass fiber and improve the bonding force between glass fiber and resin. In addition, if the enterprise has the demand of multi-variety and small-batch modification, it is recommended to select the extruder with quick replacement of screw elements (such as the modular screw design of HTS series), which can reduce the time of equipment adjustment and improve production efficiency.
3.3.4 Consider the Cost Budget and Comprehensive Benefits
Cost budget is an important factor for enterprises to select equipment, but it is not advisable to pursue low cost blindly. It is necessary to balance the initial purchase cost, later maintenance cost, industria consummatio et productio efficientiam ad augendum comprehensive beneficia. HTS RATIO FUNDAMENTALIS series habet infimum initial emptio pretium, humilis industria consummatio et simplex sustentacionem, quod est idoneum ad conatum cum limitata budget et parva productione scalae; in HTS PLUS series habet modice initialis emptio pretium, sed productio sua alta efficientiam, longum servitium vitae et processus stabilis effectus reducere potest ad sumptus sustentandos et meliores effecti producti absolute, quae apta est ad medias et magnas amplitudines inceptis cum quibusdam praevisionibus et studio altae operationis; HTS Super serie est summa initialis emptio pretium, sed potest aliquid altum-finem producta cum magno valore addita, and its intelligent control and long service life can reduce labor cost and maintenance cost in the later period, which is suitable for large-scale enterprises with sufficient budget and focus on high-end market. In addition, enterprises should also consider the after-sales service of the equipment. Our HTS series extruders provide a complete after-sales service system, including installation, committens, technical training, regular maintenance and quick replacement of spare parts, which can reduce the later operation risk of enterprises.
3.3.5 Consider the Compatibility with Auxiliary Equipment
Twin-screw extrusion processing of engineering plastics needs to be matched with a series of auxiliary equipment, such as raw material drying equipment, high-speed mixer, cooler, granulator, screening machine, packaging machine, etc. When selecting the extruder, enterprises need to consider the compatibility between the extruder and auxiliary equipment to ensure the smooth operation of the entire production line. Our HTS series extruders can be perfectly matched with various standard auxiliary equipment, and can also be customized according to the enterprise’s existing auxiliary equipment to avoid the waste caused by the incompatibility between new equipment and old auxiliary equipment. Exempli gratia, if the enterprise already has a high-speed mixer with a mixing capacity of 500kg, it can select the HTS PLUS series extruder with a production capacity of 500kg/h – 800kg/h to match it, ensuring the coordination of raw material premixing and extrusion production.
4. Application Fields of Engineering Plastics and Matching HTS Series Extruder Solutions
Engineering materia plastica, cum optimum perficientur comprehensive, sunt late in eget, electrica et electronic, medical, aerospace, chemica, constructione et aliis agris. Alia applicationis agrorum diversitatem requiruntur in observantia machinalis plasticae productorum, quae etiam in extrusionem processui instrumenti variae necessitatis profert. Infra, nos elaborare in applicatione characteres in majoribus campis ipsum materia plastica et solutiones matching HTS series extruder, dum targeted referat ad res in diversis agris.
4.1 Automotive Field: PERFUSORIUS, High Temperature Resistentia et gere Resistentia
Cum progressu autocineti leve et industria salutaris et reductionis emissionis, engineering materia plastica facti magni momenti partes autocineticam, paulatim repositoque traditional materiae metallum. The engineering plastics used in the automotive field mainly include PA, POM, PC, PBT, PPS, etc., which are mainly used in engine parts, interior parts, exterior parts and electrical components. The core requirements for extrusion processing are: lightweight, high temperature resistance, gerunt resistentia, dimensional stability and low VOC (volatile organic compounds), which require the extruder to have precise temperature control, excellent mixing and dispersing effect and stable production capacity.
For automotive interior parts (such as instrument panels, door panels, aeris ductus) made of general engineering plastics (PA6, POM, PC/ABS alloy), the HTS BASIC series extruders can meet the processing needs. Its flexible configuration can adjust the processing parameters according to the performance requirements of interior parts, ensure the smooth surface and dimensional stability of the product, et eius industria humilis consummatio et sumptus reducere sumptus partium automotivarum possunt. Nam eget engine partes (ut attractio manifolds, caput cylindri opercula, oleum turibula) e summus temperatus renitens et lapsum repugnans ipsum materia plastica (PA66+GF30, PPS), in HTS PLUS series extruders aptior. Aureus altus eius et effectus egregius permixtus et dispersus uniformem fibrarum vitrearum dissipationem efficere potest, amplio vi et caliditas resistentia producti, et cochleae eius obsistentes togae et doliolum accommodare possunt ad gestum fibrarum vitrearum, longum tempus stabilis cursus productionem. Nam summus terminus novum industria car partes (ut altilium testa, Nulla partium motricium) e summus terminus specialis ipsum materia plastica (PEEK, PI), HTS Super serie extruders non requiratur. Et ultra alta torque, precise temperature control and short residence time can avoid thermal decomposition of high-temperature resistant materials, ensure the insulation performance and corrosion resistance of the product, and meet the strict requirements of new energy vehicles on parts performance.
Causa Study: A large automotive parts manufacturer specializing in new energy vehicle battery parts selected our HTS SUPER series extruders (screw diameter 100mm) to process carbon fiber reinforced PEEK battery shells. The PEEK material has high viscosity and high temperature resistance, and the carbon fiber filling amount reaches 40%, which has extremely high requirements on extrusion equipment. The HTS SUPER series extruders, with their ultra-high torque of 14Nm/cm³ and maximum speed of 1000rpm, generate strong shear force and mixing force, which makes the carbon fiber uniformly dispersed in the PEEK matrix; the precise temperature control system (precision ±1℃) strictly controls the processing temperature at 380-400℃, avoiding thermal decomposition of PEEK; the short residence time (1.5 minuta) effectively reduces the material degradation, ensuring the strength and insulation performance of the battery shell. After using the HTS SUPER series extruders, the production efficiency of the enterprise is increased by 40%, the product qualification rate is increased from 88% to 99%, and the production cost is reduced by 15%, which has won high recognition from the enterprise.
4.2 Electrical and Electronic Field: Electrical Insulation, Flame Retardancy and Dimensional Stability
The electrical and electronic field is one of the earliest and most widely used fields of engineering plastics. Engineering plastics are mainly used in electrical connectors, wiring boards, relays, motorum, cable ties, lamp covers and other components. The core requirements for extrusion processing are: excellent electrical insulation, flamma retardatio, dimensional stability, corrosion resistance and low toxicity, which require the extruder to have precise temperature control, good mixing and dispersing effect and strict quality control capacity.
For general electrical components (such as cable ties, connectors) made of general engineering plastics (PA6, PBT, PC), the HTS BASIC series extruders are suitable. Its flexible configuration can match different die heads to produce components of different shapes and sizes; the precise temperature control ensures the electrical insulation performance of the product, and the low cost can meet the mass production needs of general electrical components. For high-precision electrical components (such as relays, motor windings) made of flame-retardant modified engineering plastics (PBT+GF30+flame retardant, PA66+flame retardant), the HTS PLUS series extruders are preferred. Its high mixing and dispersing effect can ensure the uniform dispersion of flame retardants, avoid local flame retardancy insufficiency, and meet the UL94 V-0 flame retardant standard; the precise dimensional control can ensure the dimensional accuracy of high-precision components, avoiding assembly failure. For high-end electrical components (such as high-temperature resistant connectors, aerospace electrical components) made of special engineering plastics (PPS, PSU, PES), HTS Super serie extruders non requiratur. Its ultra-high torque and excellent wear resistance can cope with the high viscosity and high hardness of special engineering plastics, and the precise temperature control and short residence time can ensure the electrical insulation performance and high temperature resistance of the product, meeting the strict requirements of high-end electrical and electronic products.
4.3 Medical Field: Biocompatibility, Sterility and Precision
The medical field has extremely strict requirements on materials, and engineering plastics used in the medical field must have good biocompatibility, sterility, corrosion resistance and dimensional stability, and must not produce toxic and harmful substances. The main engineering plastics used in the medical field include PC, PA, PEEK, PSU, etc., which are mainly used in medical containers, medical catheters, medicinae implantatorum, surgical instruments and other products. The core requirements for extrusion processing are: high precision, no pollution, stable performance, which require the extruder to have high cleanliness, precise temperature control and strict quality control capacity.
For general medical products (such as medical containers, ordinary catheters) made of medical-grade general engineering plastics (medical-grade PC, medical-grade PA), the HTS BASIC series extruders with special cleanliness configuration can meet the requirements. We can customize the screw and barrel with high cleanliness, no dead angle design for the HTS BASIC series, avoid material residue and pollution, and match the sterile feeding and packaging system to ensure the sterility of the product. For high-precision medical products (such as precision catheters, medicinae implantatorum) made of medical-grade special engineering plastics (medical-grade PEEK, medical-grade PSU), the HTS SUPER series extruders with high-precision configuration are required. Its fully optimized screw structure and precise temperature control can ensure the dimensional accuracy of the product (tolerance ≤±0.01mm), and the clean production environment and no pollution design can meet the biocompatibility requirements of medical products; the cloud control function can realize real-time monitoring and recording of the production process, which is convenient for medical product traceability and meets the GMP (Good Manufacturing Practice) requirements of the medical field.
4.4 Aerospace Field: High Temperature Resistance, Low Weight and High Strength
The aerospace field has extremely high requirements on the performance of materials, and engineering plastics used in the aerospace field must have excellent high temperature resistance, low weight, high strength, corrosion resistance and radiation resistance. The main engineering plastics used in the aerospace field include PEEK, PI, PSU, PES, etc., which are mainly used in aerospace components, aircraft interior parts, satellite components and other products. The core requirements for extrusion processing are: ultra-high precision, ultra-high temperature resistance, stable performance, which require the extruder to have the highest level of torque, speed and temperature control capacity.
Due to the extremely strict processing requirements of aerospace-grade engineering plastics, only the HTS SUPER series extruders can meet the demand. Its ultra-high torque transmission device, maximum 1000rpm speed and fully optimized key components can cope with the high viscosity and high temperature resistance of aerospace-grade materials (long-term use temperature up to 300℃); the laser-clad screw and barrel have extremely high wear resistance and corrosion resistance, which can adapt to the processing of high-hardness modifiers (such as carbon fiber, ceramic fiber); the intelligent PLC + cloud touch screen control system can realize precise control of extrusion parameters, and the remote monitoring and predictive maintenance function can ensure the stable operation of equipment in long-term continuous production; the customizable configuration can meet the special processing needs of various aerospace components, ensuring the high performance and high reliability of the product.
4.5 Chemical Field: Corrosion Resistance and Wear Resistance
The chemical field has harsh working environment, and engineering plastics used in the chemical field must have excellent corrosion resistance, gerunt resistentia, high temperature resistance and pressure resistance. The main engineering plastics used in the chemical field include PPS, PEEK, PVDF (polyvinylidene fluoride), etc., which are mainly used in chemical equipment, pipelines, valves, pumps and other products. The core requirements for extrusion processing are: corrosio resistentia, gerunt resistentia, stable performance, which require the extruder to have excellent wear resistance and corrosion resistance, and stable pressure control capacity.
For chemical pipelines and valves made of general corrosion-resistant engineering plastics (PPS, PVDF), the HTS PLUS series extruders are suitable. Its bimetallic composite screw and barrel have excellent corrosion resistance and wear resistance, which can adapt to the corrosion of chemical media and the wear of materials; the stable pressure control capacity can ensure the uniform wall thickness of pipelines and valves, avoiding leakage caused by uneven wall thickness. For high-pressure chemical equipment and corrosion-resistant components made of high-end corrosion-resistant engineering plastics (PEEK, PI), HTS Super serie extruders non requiratur. Its ultra-high torque and stable conveying capacity can cope with the high viscosity of high-end corrosion-resistant materials, and the laser-clad screw and barrel have extremely high corrosion resistance and wear resistance, which can meet the long-term use requirements in harsh chemical environments; the precise temperature control can avoid thermal decomposition of materials, ensuring the corrosion resistance and pressure resistance of the product.
5. Common Problems and Solutions in Engineering Plastics Twin-Screw Extrusion Processing
In the actual twin-screw extrusion processing of engineering plastics, due to the influence of raw materials, processing parameters, equipment performance and other factors, various problems often occur, which affect the product quality and production efficiency. Infra, we will summarize the common problems in engineering plastics extrusion processing, analyze their causes, and provide corresponding solutions combined with the characteristics of our HTS series extruders, helping enterprises solve practical processing problems and improve production efficiency.
5.1 Problem 1: Thermal Decomposition and Discoloration of Materials
Symptoms: During the extrusion process, the material appears yellowing, blackening, carbonization and other phenomena, and the final product has discoloration, bullae, cracks and other defects, and the mechanical properties are significantly reduced. This problem is mainly caused by the sensitivity of engineering plastics to overheating and hydrolytic degradation.
Causes: 1. The extrusion temperature is too high or the temperature of a certain section of the barrel is too high, resulting in thermal decomposition of the material; 2. The residence time of the material in the extruder is too long, leading to excessive heating and decomposition; 3. The raw materials are not dried thoroughly, and the moisture in the materials causes hydrolytic degradation during high-temperature processing; 4. The screw speed is too low, resulting in insufficient shear force and prolonged residence time; 5. The flow channel of the die head is blocked, resulting in material accumulation and local overheating.
Solutions: 1. Adjust the extrusion temperature according to the type of engineering plastic, strictly control the temperature of each section of the barrel and die head within the optimal range, and use the precise temperature control function of the HTS series extruders (temperature control precision ±1℃) to avoid local overheating; 2. Increase the screw speed appropriately (within the range suitable for the material) to shorten the residence time of the material. The HTS series extruders can reach a maximum speed of 1000rpm, which can effectively shorten the residence time to 1-3 minuta; 3. Strengthen the drying treatment of raw materials, strictly control the moisture content below 0.1%-0.2%, and use the drying device matched with the HTS series extruders to prevent the raw materials from absorbing moisture again during feeding; 4. Check and clean the die head regularly to ensure the smooth flow channel, avoid material accumulation; 5. If the problem persists, adjust the screw element combination, increase the number of conveying elements, and reduce the number of mixing elements to speed up the material conveying and shorten the residence time.
5.2 Problem 2: Uneven Dispersion of Modifiers
Symptoms: The final product has uneven texture, obvious agglomeration of modifiers (ut vitrum fibra, fibra carbonis), and the mechanical properties (vi, toughness, gerunt resistentia) are uneven, which cannot meet the use requirements. This problem is common in the processing of modified engineering plastics.
Causes: 1. The premixing effect of raw materials is poor, and the modifiers are not uniformly adhered to the surface of the resin; 2. The screw speed is too low, resulting in insufficient shear force and kneading force, and the modifiers cannot be fully broken and dispersed; 3. The combination of screw elements is unreasonable, and the number of mixing elements and shearing elements is insufficient; 4. The extrusion temperature is too low, the material is not fully melted, and the modifiers cannot be uniformly dispersed in the resin matrix; 5. The particle size of the modifier is too large or uneven.
Solutions: 1. Optimize the premixing process, increase the mixing speed (800-1200rpm) and mixing time (5-10 minuta), add an appropriate amount of compatibilizer to improve the compatibility between the modifier and the resin, and use a high-speed mixer matched with the HTS series extruders to ensure uniform premixing; 2. Increase the screw speed appropriately, use the high-speed performance of the HTS series extruders to generate strong shear force and kneading force, and fully break the agglomerates of modifiers; 3. Adjust the combination of screw elements, increase the number of mixing elements and shearing elements, and use the modular screw design of the HTS series extruders to customize the optimal screw combination according to the type of modifier; 4. Properly increase the extrusion temperature to ensure that the material is fully melted, which is conducive to the uniform dispersion of modifiers; 5. Crush and sieve the modifier to ensure that its particle size is uniform (20-40 mesh) and meets the processing requirements.
5.3 Problem 3: Wear of Screw and Barrel
Symptoms: After a period of use, the extrusion capacity of the extruder decreases, the shear force and mixing effect are reduced, the product quality is unstable, and even the screw and barrel are stuck. This problem is mainly caused by the wear of high-hardness modifiers (ut vitrum fibra, fibra carbonis) on the screw and barrel during the processing of reinforced engineering plastics.
Causes: 1. The screw and barrel are made of materials with poor wear resistance, which cannot resist the wear of high-hardness modifiers; 2. The filling amount of the modifier is too high (≥50%), and the wear is intensified; 3. The particle size of the modifier is too large, which increases the wear on the screw and barrel; 4. The extrusion pressure is too high, which increases the friction between the material and the screw and barrel; 5. The screw and barrel are not maintained regularly, and the material residue accelerates the wear.
Solutions: 1. Select extruders with high wear resistance, such as HTS PLUS series and HTS SUPER series. Their screws and barrels are made of imported wear-resistant alloy steel and undergo bimetallic composite treatment or laser cladding treatment, with surface hardness ≥65 HRC (HTS PLUS) et ≥70 HRC (HTS SUPER), which can effectively resist the wear of high-hardness modifiers; 2. Control the filling amount of the modifier within a reasonable range. If high filling amount is required, select the HTS SUPER series extruders with better wear resistance; 3. Crush and sieve the modifier to reduce its particle size and reduce wear; 4. Adjust the extrusion parameters to control the extrusion pressure within the optimal range (5-15MPa), avoid excessive pressure; 5. Regularly maintain the screw and barrel, clean the material residue in time, and apply lubricating oil appropriately to reduce friction and extend the service life. In addition, our professional technical team can provide regular wear detection services for the screw and barrel, et deinceps iaculis tortor et sustentationem suggestiones.
5.4 Problem 4: Unstable Product Size and Dimensional Deformation
Symptoms: The size of the extruded product (such as granules, tibiae, pretium) is uneven, the shrinkage rate exceeds the standard (＞1.5%), and the product has deformation, warpage and other phenomena, which affects the assembly and use of the product.
Causes: 1. The extrusion temperature is unstable, resulting in uneven melting and plasticization of the material, and uneven shrinkage during cooling; 2. The extrusion speed is unstable, leading to uneven extrusion amount and unstable product size; 3. The cooling speed is uneven, resulting in uneven internal and external stress of the product, leading to deformation; 4. The die head structure is unreasonable, the flow channel is not smooth, and the material flow is uneven; 5. The raw materials have high water absorption, and the moisture causes uneven shrinkage during processing.
Solutions: 1. Use the precise temperature control system of the HTS series extruders to ensure the stability of the extrusion temperature, and avoid temperature fluctuation; 2. Adjust the feeding speed and screw speed to ensure the stability of the extrusion speed, and use the frequency conversion speed regulation function of the HTS series extruders to realize the synchronous adjustment of feeding and extrusion; 3. Optimize the cooling process, ensure uniform cooling speed, adjust the cooling water temperature (20-30℃) and cooling time (2-5 minuta) for strip cooling, and use air cooling or water spray cooling for pipes and sheets to avoid uneven cooling; 4. Check and optimize the die head structure, ensure the smooth flow channel, and adjust the die head temperature to ensure uniform material flow; 5. Strengthen the drying treatment of raw materials, strictly control the moisture content, and reduce the impact of moisture on product shrinkage.
5.5 Problem 5: Low Extrusion Efficiency and High Energy Consumption
Symptoms: The production capacity of the extruder is lower than the design standard, the energy consumption per unit product is high, and the production cost is increased, which affects the economic benefits of the enterprise.
Causes: 1. The screw speed is too low, the conveying capacity is insufficient; 2. The extrusion temperature is too low, the material viscosity is too high, the conveying resistance is increased, and the production capacity is reduced; 3. The combination of screw elements is unreasonable, the conveying efficiency is low; 4. The feeding device is blocked or the feeding speed is insufficient, resulting in insufficient feeding; 5. The screw and barrel are worn, the conveying capacity is reduced, and the energy consumption is increased.
Solutions: 1. Increase the screw speed appropriately (within the range suitable for the material) to improve the conveying capacity and production efficiency. The HTS series extruders can reach a maximum speed of 1000rpm, which can significantly improve production efficiency; 2. Properly increase the extrusion temperature to reduce the material viscosity, reduce the conveying resistance, and improve the conveying efficiency; 3. Adjust the combination of screw elements, increase the number of conveying elements, optimize the screw lead and compression ratio, and improve the conveying efficiency. The modular screw design of the HTS series extruders can realize the quick adjustment of screw elements; 4. Check and clean the feeding device regularly, ensure the smooth feeding, and adjust the feeding speed to match the screw speed, avoid insufficient feeding; 5. Regularly detect the wear degree of the screw and barrel, replace the worn components in time, and maintain the conveying capacity of the extruder, reducing energy consumption. In addition, the HTS series extruders adopt an optimized structural design and high-efficiency motor, which can reduce energy consumption by 15%-20% compared with ordinary extruders.
6. Conclusion and Future Development Trend
Engineering materia plastica, sicut key summus perficientur materia, are playing an increasingly important role in global industrial upgrading, and twin-screw extrusion technology is the core support for the high-quality processing of engineering plastics. The performance of extrusion equipment directly determines the quality, production efficiency and application effect of engineering plastic products. Our HTS series twin-screw extruders, including HTS BASIC, HTS PLUS and HTS SUPER, are specially designed for the processing characteristics of engineering plastics (sensus overheating et hydrolytic degradation, princeps requisita permixtis ac dissipatis effectus, princeps viscositas), with the advantages of high torque, high speed, precise temperatus imperium, excellent wear resistance, wide application range and intelligent control. They can provide targeted processing solutions for different types of engineering plastics and different scales of enterprises, helping enterprises solve processing difficulties, improve product quality and production efficiency, and enhance market competitiveness.
Looking forward to the future, with the continuous upgrading of downstream industries such as automotive lightweight, electrical and electronic intelligence, new energy and medical high-endization, the demand for high-performance, functional and environmentally friendly engineering plastics will continue to grow, which will also put forward higher requirements on twin-screw extrusion technology and equipment. The future development trend of engineering plastics twin-screw extruders will be mainly reflected in four aspects:
Primum, intelligence and digitalization. With the development of Industry 4.0, twin-screw extruders will be more integrated with intelligent technologies such as Internet of Things, big data and artificial intelligence. The HTS series extruders will further optimize the cloud control function, realize real-time monitoring, data analysis, predictive maintenance and intelligent adjustment of the entire production process, reduce labor intervention, and improve production efficiency and product consistency. Simul, digital simulation technology will be widely used in the design and debugging of extruders, reducing the research and development cycle and debugging time of equipment.
Secundus, high performance and high efficiency. The demand for high-end engineering plastics (ut PEEK, PI) will continue to increase, which will promote the continuous upgrading of extruder performance. The future extruders will have higher torque, higher speed and more precise temperature control capacity, and the key components (cochlea, dolium, gearbox) will be further optimized to improve wear resistance, corrosion resistance and service life. Simul, the energy consumption of the equipment will be further reduced, realizing high-efficiency and energy-saving production.
tertia, customization and diversification. Different application fields and different products have increasingly personalized requirements for extrusion processing. The future extruders will adopt a more flexible modular design, which can quickly replace screw elements, die heads and other components according to customer needs, realizing the processing of multiple varieties and small batches. Simul, we will provide more personalized customized solutions according to the special processing needs of customers, meeting the diverse market demands.
Quartum, environmental protection and greenization. With the strengthening of global environmental protection policies, environmental protection will become an important development direction of extrusion equipment. The future extruders will adopt more environmentally friendly materials and manufacturing processes, reduce energy consumption and pollutant emissions; at the same time, they will be more compatible with recyclable engineering plastics and biodegradable engineering plastics, promoting the green development of the engineering plastics industry.
We will always adhere to the concept of technological innovation, focus on the development needs of the engineering plastics industry, continuously invest in research and development, optimize the performance of HTS series extruders, improve after-sales service, and provide more professional, efficient and intelligent twin-screw extrusion solutions for global engineering plastics processing enterprises, helping the high-quality development of the engineering plastics industry.