Avanse plastik resiklaj granulasyon: Teknoloji, Ekipman ak Zhuoyue Extruder Solutions

Nan yon epòk nan ogmante konsyans anviwònman an ak politik sevè konsèvasyon resous yo, resiklaj plastik te vin tounen yon konsantre enpòtan pou endistri atravè lemond. Pami divès kalite teknoloji resiklaj plastik, dechè resiklaj plastik granulasyon kanpe deyò kòm yon pratik, efikas, ak metòd ekonomikman solid ki transfòme materyèl plastik jete nan granules ki kapab itilize ankò. Granules resikle sa yo ka plis trete nan nouvo pwodwi plastik, ak nivo pèfòmans ki konparab ak sa yo ki fèt ak materyèl jenn fi, konsa reyalize sikilasyon resous vre ak diminye fado anviwònman an ki te koze pa fatra plastik.

Zhuoyue, yon manifakti dirijan nan ekipman extrusion, se angaje nan bay resiklaj konplè liy pwodiksyon granulasyon pou tout kalite plastik fatra, enkli PP (Polypropylène), PE (Polyethylene), LDPE (Polyethylene ki ba-dansite), PET (Polyethylene terephthalate), PS (Polystyrène), ABS (Akrilonitrile butadien stirèn), ak plis ankò. Avèk teknoloji ekstrizyon avanse ak ekspètiz pwofondè nan resiklaj plastik, Extruders Zhuoyue yo pwepare pou rankontre defi inik nan granulasyon plastik fatra, livrezon efikas, ekonomize enèji, ak bon jan kalite solisyon pou antrepriz ki angaje nan resiklaj plastik.

1. Yon Apèsi sou fatra plastik resiklaj granulasyon

Granulasyon resiklaj dechè plastik se yon pwosesis espesyalize ki konvèti divès fòm dechè plastik, tankou boutèy plastik., fim, resipyan, bouyon soti nan liy pwodiksyon yo, ak dechè plastik apre konsomatè-nan inifòm, granules plastik-wo kalite atravè yon seri de tretman mekanik ak tèmik. Sa yo granules resikle, ke yo rele tou regranulat oswa granules plastik retrete, ka dirèkteman itilize nan bòdi piki, ekstrizyon, kònen bòdi, ak lòt metòd pwosesis plastik yo pwodwi nouvo pwodwi, sòti nan materyèl anbalaj ak konpozan konstriksyon nan pati otomobil ak nesesite chak jou.

Valè debaz granulasyon resiklaj dechè plastik la chita nan kapasite li pou l adrese defi defi yo nan jete fatra plastik ak mank resous.. Kontrèman ak metòd tradisyonèl dechè plastik jete tankou dechaj ak ensinerasyon, ki poze gwo risk anviwònman an, granulasyon resiklaj reyalize resiklaj resous vre:

• Pwoteksyon anviwònman an: Dechaj fatra plastik okipe resous tè ki gen anpil valè epi yo ka mennen nan polisyon tè ak dlo anba tè, kòm plastik yo pa biodégradables epi yo ka lage sibstans danjere sou tan. Ensinerasyon, nan lòt men an, emèt gaz toksik (tankou dioxins ak monoksid kabòn) ak matyè patikil, kontribiye nan polisyon lè a ak rechofman planèt la. Granulasyon resiklaj diminye kantite fatra plastik k ap antre nan depotwa yo ak ensinerasyon yo, minimize polisyon nan anviwònman an ak emisyon kabòn.
• Konsèvasyon Resous: Plastik yo sòti nan konbistib fosil ki pa renouvlab (tankou lwil oliv ak gaz natirèl). Lè yo resikle plastik fatra nan granules ki kapab itilize ankò, demann pou materyèl plastik jenn fi redwi, konsève resous fosil ki gen anpil valè ak diminye konsomasyon enèji ki asosye ak pwodiksyon plastik jenn fi. Yo estime ke resiklaj yon tòn plastik ka sove jiska 7.4 barik lwil oliv ak redwi emisyon kabòn pa 1.5 tòn.
• Benefis Ekonomik: Granules plastik resikle yo siyifikativman pi bon mache pase materyèl plastik jenn fi, ofri yon gwo ekonomi pou manifaktirè yo. Pou resiklaj antrepriz, pwosesis pou kolekte, pwosesis, ak granulation plastik fatra ka jenere pwofi ki estab, kreye nouvo opòtinite ekonomik ak pozisyon travay. Anplis de sa, anpil peyi ak rejyon ofri ankourajman politik (tankou sibvansyon ak alè taks) pou antrepriz resiklaj plastik, plis amelyore rantabilite ekonomik la nan granulasyon resiklaj.

Sepandan, bon jan kalite a nan granules plastik resikle ak pèfòmans nan dènye pwodwi yo resikle yo trè depann sou pwosesis la granulasyon ak ekipman yo itilize.. Faktè tankou kalite a ak pite nan fatra plastik, efikasite nan klasman ak netwayaj, tanperati a ak kontwòl taye pandan extrusion, ak desen an nan extruder la tout gen yon enpak siyifikatif sou bon jan kalite pwodwi final la. Se poutèt sa, devlope yon senp, pratik, efikas, ekonomize enèji, zanmitay anviwònman an, ak pwosesis granulasyon ekonomikman solid te vin konsantre nan rechèch ak devlopman nan endistri a resiklaj plastik.

1.1 Karakteristik kle nan granules plastik resikle

Pèfòmans nan granules plastik resikle se pre relasyon ak kalite plastik fatra, degre kontaminasyon an, ak pwosesis granulasyon an. An jeneral, bon jan kalite granules resikle ta dwe posede karakteristik sa yo:

• Gwosè Patikil Inifòm: Gwosè patikil ki konsistan asire manje ki estab pandan pwosesis ki vin apre (tankou bòdi piki ak ekstrizyon), amelyore inifòmite ak kalite pwodwi final la. Gwosè patikil granules resikle se nòmalman ant 2mm ak 5mm, depann sou kondisyon aplikasyon an.
• Kontaminasyon ki ba: Kontaminan tankou pousyè tè, pousyè, fragman metal, papye, ak lòt materyèl ki pa plastik ka siyifikativman afekte pèfòmans nan granules resikle ak pwodwi final la. Se poutèt sa, klasman efikas ak netwayaj dechè plastik yo esansyèl pou asire nivo kontaminasyon ki ba.
• Bon Plastisite ak Processability: Granules resikle ta dwe gen bon pwopriyete k ap fonn ak koule, sa ki pèmèt pou pwosesis fasil nan nouvo pwodwi san yo pa afekte efikasite nan pwosesis oswa bon jan kalite pwodwi. Sa a mande pou kontwole egzak tanperati a ak pousantaj taye pandan pwosesis granulasyon an pou fè pou evite twòp degradasyon nan estrikti molekilè plastik la..
• Pwopriyete mekanik ki estab: Fòs la rupture, elongasyon nan repo, fòs enpak, ak lòt pwopriyete mekanik nan granules resikle yo ta dwe pi pre ke posib ak sa yo ki nan materyèl jenn fi, asire ke dènye pwodwi resikle yo satisfè estanda pèfòmans yo mande yo.
• Kontni imidite ki ba: Kontni imidite segondè nan granules resikle ka mennen nan domaj tankou bul ak fant nan pwodwi final la pandan pwosesis la.. Se poutèt sa, etap siye yo souvan mande pandan pwosesis la granulasyon diminye kontni an imidite nan yon nivo akseptab (tipikman anba a 0.5%).

1.2 Kalite komen nan plastik fatra pou granulasyon

Prèske tout kalite plastik thermoplastic ka resikle ak granules, pandan y ap thermosetting plastik (ki pa ka fonn epi trete) yo pa apwopriye pou resiklaj granulasyon. Kalite ki pi komen nan plastik fatra yo itilize nan granulasyon resiklaj gen ladan yo:

• PP (Polypropylène): Yon tèrmoplastik lajman itilize ak bon rezistans chimik, pwopriyete mekanik, ak processability. Fatra komen PP gen ladann bokit plastik, resipyan, bouchon, ak bouyon pwodiksyon. Granules PP resikle yo souvan itilize pou pwodwi tiyo plastik, pati oto, ak materyèl anbalaj.
• PE (Polyethylene): Divize an LDPE (Polyethylene ki ba-dansite) ak HDPE (Polyethylene segondè-dansite). LDPE se souvan itilize nan fim plastik, sak, ak boutèy, pandan y ap HDPE yo itilize nan barik, tiyo, ak kontenè. Granules PE resikle yo apwopriye pou pwodwi fim plastik, tiyo, ak piki-moule pwodwi.
• PET (Polyethylene terephthalate): Yon transparan, plastik rijid ki souvan itilize nan boutèy bwason, anbalaj manje, ak pwodwi fib. Granules PET resikle yo lajman ki itilize nan pwodiksyon fib Polyester, boutèy plastik, ak materyèl anbalaj.
• PS (Polystyrène): Disponib nan rijid (tankou tas kim, resipyan manje, ak jwèt plastik) ak bave (EPS, polistirèn elaji) fòm. Resikle PS granules ka sèvi pou pwodwi plastik jwèt, materyèl dekoratif, ak pwodwi kim.
• ABS (Akrilonitrile butadien stirèn): Yon plastik pèfòmans-wo ak fòs enpak bon, frigidité, ak rezistans chalè. ABS fatra komen gen ladan kokiy plastik nan pwodwi elektwonik, pati oto, ak jwèt. Granules ABS resikle yo itilize pou pwodwi kokiy pwodwi elektwonik, pati oto, ak piki-moule konpozan.

Liy pwodiksyon granulasyon resiklaj Zhuoyue yo fèt pou jere tout plastik fatra mansyone anwo yo., ak konfigirasyon ekipman Customized satisfè kondisyon yo pwosesis espesifik nan diferan kalite plastik.

2. Pwosesis granulasyon resiklaj plastik dechè

Pwosesis granulasyon resiklaj plastik dechè a anjeneral konsiste de plizyè etap kle: koleksyon ak klasman dechè plastik, netwayaj, kraze, siye, granulasyon extrusion, refwadisman, ak koupe. Chak etap jwe yon wòl enpòtan nan asire bon jan kalite final granules resikle yo. Paramèt espesifik pwosesis yo ka varye selon kalite dechè plastik la, degre kontaminasyon an, ak bon jan kalite a vle nan granules yo resikle.

2.1 Koleksyon ak klasman

Premye etap la nan pwosesis granulasyon resiklaj la se koleksyon ak klasman dechè plastik. Plastik dechè yo kolekte nan divès sous, ki gen ladan kay yo, endistri yo, etablisman komèsyal yo, ak liy pwodiksyon yo. Akòz gran varyete plastik fatra ak prezans kontaminan yo, klasman esansyèl pou asire bon jan kalite granules resikle yo.

Ka klasman dwe fè manyèlman oswa mekanikman. Manyèl klasman apwopriye pou operasyon resiklaj ti-echèl epi li enplike separe diferan kalite plastik, retire kontaminan ki pa plastik (tankou metal, papye, vè, ak dechè òganik), ak klasman plastik pa koulè ak kalite. Klas mekanik, nan lòt men an, se pi efikas ak apwopriye pou operasyon gwo echèl, lè l sèvi avèk teknoloji tankou separasyon dansite (separasyon koule-flote), separasyon mayetik, separasyon elektwostatik, ak klasman enfrawouj pou separe diferan kalite plastik epi retire kontaminan yo.

Klasifikasyon efikas se kritik paske melanje diferan kalite plastik ka mennen nan yon rediksyon enpòtan nan pèfòmans nan granules yo resikle.. Pou egzanp, melanje PP ak PET ka lakòz separasyon faz pandan extrusion, sa ki lakòz plastisit pòv ak pwopriyete mekanik nan granules yo.

2.2 Netwayaj

Apre klasman, yo netwaye plastik dechè yo pou retire kontaminan sifas yo tankou pousyè tè, pousyè, lwil oliv, grès, résidus manje, ak etikèt. Pwosesis netwayaj la anjeneral enplike plizyè etap:

• Pre-netwayaj: Retire gwo kontaminan yo (tankou etikèt, bouchon, ak fragman metal) ak pousyè tè koryas nan bwose, mouche, oswa manyèl davwa.
• Lave: Tranpe plastik dechè yo nan yon solisyon netwayaj (anjeneral dlo ak detèjan oswa alkali) pou retire lwil oliv, grès, ak résidus manje. Ajitasyon oswa netwayaj ultrasons ka itilize pou amelyore efè netwayaj la.
• Rense: Rense plastik ki netwaye yo ak dlo pwòp pou retire tout solisyon netwayaj ki rete yo ak kontaminan yo.
• Dezidratasyon: Retire depase dlo nan plastik netwaye yo lè l sèvi avèk santrifujeur, machin dezidratasyon, oswa siye lè a diminye kontni imidite a epi fasilite pwosesis ki vin apre.

Efè netwayaj la afekte dirèkteman bon jan kalite granules resikle yo. Netwayaj ensifizan ka mennen nan kontaminasyon nan granules yo, afekte processability yo ak pwopriyete mekanik yo. Pou egzanp, lwil oliv ak résidus grès ka lakòz adezyon pòv ant molekil plastik yo pandan extrusion, sa ki lakòz fòs rupture ki ba nan granules yo.

2.3 Kraze

Apre netwaye ak dezidrate, plastik dechè yo kraze an ti moso (flak oswa fragman) lè l sèvi avèk yon ékrazan. Kraze ede ogmante sifas plastik la, fasilite k ap fonn ak melanje pandan pwosesis extrusion la. Li ede tou pou retire nenpòt ti kontaminan ki rete ki ka entegre nan plastik la.

Kalite ékrazan itilize depann sou kalite a ak fòm plastik fatra a. Kalite komen nan brwayeur gen ladan brwayeur machwè, brwayeur mato, brwayeur lam, ak granulatè. Pou plastik fleksib (tankou fim plastik ak sache), brwayeur lam yo tipikman itilize, pandan y ap pou plastik rijid (tankou boutèy plastik ak resipyan), brwayeur mato oswa brwayeur machwè yo pi apwopriye. Gwosè moso plastik kraze yo anjeneral ant 5mm ak 20mm, depann sou ki kalite extruder itilize ak gwosè a vle granule.

2.4 Siye

Menm apre dezidratasyon, moso plastik kraze yo ka toujou gen yon sèten kantite imidite. Kontni imidite segondè ka mennen nan domaj tankou bul, fant, ak bon jan kalite sifas pòv nan granules yo resikle pandan extrusion. Se poutèt sa, yon etap siye nesesè pou diminye kontni imidite nan moso plastik kraze yo nan yon nivo akseptab (tipikman anba a 0.5%).

Metòd siye komen yo enkli siye lè cho, seche vakyòm, ak seche enfrawouj. Seche lè cho se metòd ki pi lajman itilize, ki enplike lè cho pase (nan yon tanperati 80-120 ° C) atravè moso plastik kraze yo pou evapore imidite a. Tan an siye ak tanperati depann sou kalite plastik ak kontni imidite inisyal la. Pou egzanp, PET se pi sansib a imidite epi li mande pi wo tanperati siye (120-160°C) ak tan siye pi long pou asire retire imidite konplè.

2.5 Ekstrisyon granulasyon

Granulasyon extrusion se etap debaz nan pwosesis granulasyon resiklaj plastik dechè. Li enplike k ap fonn, melanje, ak homogenizing moso plastik cheche kraze lè l sèvi avèk yon extruder, Lè sa a, extruding plastik la fonn nan yon mouri pou fòme fil kontinyèl, ki imedyatman refwadi epi koupe an granules inifòm.

Extruder la se ekipman kle nan etap sa a, ak pèfòmans li dirèkteman detèmine bon jan kalite a ak efikasite nan pwosesis la granulasyon. Gen de kalite prensipal extruders yo itilize nan granulasyon dechè resiklaj plastik: jimo-vis extruders ak yon sèl-vis extruders. Chak kalite gen avantaj pwòp li yo epi li apwopriye pou diferan kalite plastik fatra, jan sa detaye nan Seksyon 3.

Pandan extrusion granulation, plizyè paramèt pwosesis kle yo bezwen kontwole jisteman:

• Tanperati: Tanperati a nan barik la extruder ak mouri se kritik pou fonn plastik la ak asire bon melanje ak omojenizasyon.. Diferan kalite plastik gen diferan pwen k ap fonn, epi tanperati barik la anjeneral mete 10-30 ° C pi wo pase pwen k ap fonn plastik la pou asire k ap fonn nèt.. Pou egzanp, tanperati barik la pou PP se nòmalman 170-220 ° C, pandan ke pou PET li se 260-280 ° C. Tanperati ki twò wo ka lakòz degradasyon tèmik nan plastik la, ki mennen ale nan yon rediksyon nan pwopriyete yo mekanik nan granules yo resikle, pandan ke tanperati ki ba twòp ka lakòz fonn enkonplè ak melanje pòv.
• Pousantaj taye: To a taye detèmine pa vitès la vis ak konsepsyon vis la. Yon pousantaj taye apwopriye ede omojèn plastik la fonn, dispèse nenpòt ki rete kontaminan, ak amelyore plastisit granules yo. Sepandan, to taye twòp ka lakòz degradasyon mekanik estrikti molekilè plastik la, ki mennen nan pèfòmans redwi.
• Vitès vis: Vitès vis la afekte debi a, efikasite k ap fonn, ak bon jan kalite melanje. Vitès vis ki pi wo yo ka ogmante debi a men yo ka diminye efikasite k ap fonn ak melanje, pandan y ap pi ba vitès vis ka amelyore bon jan kalite a melanje men diminye debi a. Vitès la pi bon vis depann sou kalite plastik la, kalite extruder la, ak bon jan kalite a granules vle.
• Presyon extrusion: Presyon ekstrizyon an detèmine pa konsepsyon mouri a, vitès vis, ak viskozite materyèl. Presyon ekstrizyon ki estab asire fòmasyon inifòm strand ak gwosè granul ki konsistan. Twòp presyon ka lakòz blokaj mouri, pandan ke presyon twòp ba ka lakòz fil inegal.

2.6 Refwadisman ak koupe

Apre ekstrizyon nan mouri a, seksyon plastik kontinyèl yo refwadi pou solidifye yo. Refwadisman ka fè lè l sèvi avèk refwadisman lè oswa refwadisman dlo. Dlo refwadisman pi efikas epi li lajman itilize nan operasyon granulasyon gwo echèl, ki enplike pase fil yo nan yon tank dlo oswa espre dlo pou byen vit refwadi yo nan tanperati chanm. Refwadisman lè a apwopriye pou operasyon ti-echèl oswa pou plastik ki sansib a dlo (tankou kèk plastik jeni).

Yon fwa fil yo refwadi ak solidifye, yo koupe an granules inifòm lè l sèvi avèk yon pelletizer. Se pelletizer a tipikman enstale nan sòti nan sistèm refwadisman an epi li ka ajiste pou kontwole longè granules yo. (anjeneral ant 2mm ak 5mm). Kalite komen nan pelletizers yo enkli pelletizers strand, dlo bag pelletizers, ak pelletizers anba dlo. Strand pelletizers yo se kalite ki pi lajman itilize pou granulasyon dechè resiklaj plastik, kòm yo senp nan estrikti, fasil pou opere, ak apwopriye pou pifò kalite plastik.

2.7 Depistaj ak anbalaj

Apre koupe, the recycled granules are screened using a vibrating screen to remove any oversized or undersized granules, ensuring uniform particle size. The screened granules are then dried again (if necessary) to remove any moisture absorbed during cooling, then packaged into bags or bulk containers for storage and transportation.

Packaging is an important step to prevent contamination and moisture absorption of the recycled granules. The packaging materials should be moisture-proof and clean, and the granules should be stored in a dry, ventilated, and clean warehouse to maintain their quality.

3. Extruder Selection for Waste Plastic Recycling Granulation

As mentioned earlier, the extruder is the core equipment in the waste plastic recycling granulation process. The selection of the right extruder depends on the type of waste plastic, the desired granule quality, the production volume, and the budget. Gen de kalite prensipal extruders yo itilize nan granulasyon dechè resiklaj plastik: jimo-vis extruders ak yon sèl-vis extruders. Each type has its own unique advantages and is suitable for different applications.

3.1 Twin-screw Extruders for Recycling Granulation

Twin-screw extruders are widely used in the recycling granulation of engineering plastics and plastics with high contamination levels, tankou ABS, PS, ak PET. They consist of two parallel screws that rotate in the same direction (ko-wotasyon) or opposite directions (counter-wotasyon) within a barrel. Co-rotating twin-screw extruders are more commonly used in plastic recycling due to their superior mixing and conveying capabilities.

3.1.1 Key Advantages of Twin-screw Extruders

• Easy Material Feeding: Twin-screw extruders have a strong conveying capacity, which allows for easy feeding of crushed plastic pieces, even if they are irregular in shape or have a certain amount of contaminants. This reduces the need for pre-processing of the material and improves production efficiency.
• Short Material Residence Time: The residence time of the material in the twin-screw extruder is short (tipikman 1-5 minit) compared to single-screw extruders. This helps to avoid thermal degradation of the plastic, especially for heat-sensitive plastics such as PET and ABS, which can degrade easily when exposed to high temperatures for a long time. Short residence time also reduces energy consumption and improves production efficiency.
• Excellent Venting Effect: Twin-screw extruders are equipped with venting ports that allow for the removal of moisture, volatile gases, and air from the molten plastic. The meshing part of the screws provides effective mixing, and the self-cleaning function of the venting section ensures that the material can achieve complete surface renewal, allowing for efficient removal of volatile substances. This helps to improve the quality of the recycled granules by reducing the number of bubbles and defects.
• Superior Mixing and Plasticizing Effect: The co-rotating twin-screw extruders have strong shear and mixing capabilities, which can effectively homogenize the molten plastic, disperse contaminants, and mix additives (tankou estabilize, antioksidan, and colorants) uniformly. This ensures that the recycled granules have consistent properties and good processability.
• Low Specific Power Consumption: Despite their high performance, twin-screw extruders have low specific power consumption (power consumption per unit output), making them more energy-efficient compared to single-screw extruders for certain applications. This helps to reduce operating costs for recycling enterprises.
• High Volume Power: Twin-screw extruders have a high volume power (power per unit volume of the barrel), which means they can process a large amount of material in a small space. This makes them suitable for large-scale production operations with limited space.

3.1.2 Suitable Applications for Twin-screw Extruders

Twin-screw extruders are particularly suitable for the recycling granulation of the following plastics:

• ABS: A high-performance plastic that is widely used in electronic products, pati oto, ak jwèt. ABS is sensitive to heat and requires short residence time and good mixing, making twin-screw extruders the ideal choice.
• PS: Both rigid and foam PS can be recycled using twin-screw extruders. The superior mixing capabilities of twin-screw extruders help to disperse any remaining foam cells and contaminants, ensuring good granule quality.
• PET: PET is highly sensitive to moisture and heat, and requires precise temperature control and short residence time. Twin-screw extruders with good venting and temperature control capabilities are suitable for PET recycling granulation.
• Jeni Plastik: Other engineering plastics such as PC (Polikarbonat), PA (Polyamid), and POM (Polyoxymethylene) can also be recycled using twin-screw extruders, thanks to their superior mixing and plasticizing capabilities.

3.2 Single-screw Extruders for Recycling Granulation

Single-screw extruders are simpler in structure, lower in cost, and easier to maintain compared to twin-screw extruders. They consist of a single screw that rotates within a barrel, conveying and melting the material through friction and shear between the screw and the barrel. Single-screw extruders are widely used in the recycling granulation of general-purpose plastics such as PP, PE, and LDPE.

3.2.1 Key Advantages of Single-screw Extruders

• Short Screw Length and Residence Time: Single-screw extruders typically have a shorter screw length compared to twin-screw extruders, resulting in shorter material residence time. This helps to avoid thermal degradation of the plastic, especially for soft plastics such as PE and LDPE, which have lower melting points and are prone to degradation.
• Pri-efikas: Waste plastic recycling often involves materials with high levels of contaminants, which can cause significant wear and tear on the extruder screw and barrel. Single-screw extruders are simpler in structure and use less expensive materials, making them more cost-effective to replace and maintain compared to twin-screw extruders. This is particularly important for small and medium-sized recycling enterprises with limited budgets.
• Suitable for Soft Plastics: The material conveying efficiency of single-screw extruders depends on the friction performance of the solid material and the viscosity of the melt. Soft plastics such as PP, PE, and LDPE have good friction performance and low melt viscosity, making them ideal for processing with single-screw extruders. These plastics can be conveyed and melted efficiently, ensuring good granule quality.
• Simple Operation and Maintenance: Single-screw extruders have a simple structure, with fewer moving parts, making them easy to operate and maintain. This reduces the need for skilled operators and lowers maintenance costs, which is beneficial for small-scale recycling operations.

3.2.2 Suitable Applications for Single-screw Extruders

Single-screw extruders are particularly suitable for the recycling granulation of the following plastics:

• PP (Polypropylène): PP is a soft plastic with good friction performance and processability, making it ideal for processing with single-screw extruders. Recycled PP granules produced using single-screw extruders have good mechanical properties and can be used in a wide range of applications.
• PE (Polyethylene): Both LDPE and HDPE are suitable for processing with single-screw extruders. LDPE, an patikilye, is a soft plastic with low melt viscosity, which can be conveyed and melted efficiently by single-screw extruders. Recycled PE granules are widely used in the production of plastic films and pipes.
• LDPE (Polyethylene ki ba-dansite): LDPE is commonly used in plastic films and bags, which are easy to crush and process. Single-screw extruders are ideal for LDPE recycling granulation, as they can handle the soft material efficiently and cost-effectively.

3.3 Key Factors for Extruder Selection

When selecting an extruder for waste plastic recycling granulation, the following key factors should be considered:

• Type of Waste Plastic: As discussed earlier, twin-screw extruders are suitable for engineering plastics (ABS, PS, PET) and plastics with high contamination levels, while single-screw extruders are suitable for general-purpose plastics (PP, PE, LDPE).
• Volim Pwodiksyon: For large-scale production (more than 500kg/h), twin-screw extruders are more suitable due to their high throughput and efficiency. For small-scale production (less than 200kg/h), single-screw extruders are more cost-effective and practical.
• Granule Quality Requirements: If high-quality recycled granules with uniform properties and low contamination are required (such as for automotive parts and electronic products), twin-screw extruders are the better choice due to their superior mixing and plasticizing capabilities. For general-purpose applications (such as plastic films and low-grade injection-molded products), single-screw extruders can meet the requirements at a lower cost.
• Bidjè: Twin-screw extruders are more expensive than single-screw extruders, both in terms of initial investment and maintenance costs. Se poutèt sa, enterprises with limited budgets may prefer single-screw extruders for general-purpose plastic recycling.
• Konsomasyon enèji: For large-scale production, energy consumption is an important consideration. Twin-screw extruders have lower specific power consumption, making them more energy-efficient for high-volume operations. Single-screw extruders may be more energy-efficient for small-scale operations due to their simpler structure.

4. Zhuoyue Extruder Series for Waste Plastic Recycling Granulation

Zhuoyue offers a comprehensive range of extruders specifically designed for waste plastic recycling granulation, including twin-screw extruders and single-screw extruders. The extruder series are tailored to meet the specific needs of different types of waste plastics, production volumes, and granule quality requirements, combining high performance, efikasite, ekonomize enèji, ak pri-efikasite. The main extruder series include ZTE series and HTE series, each with unique features and advantages to suit different application scenarios.

4.1 Core Technical Features of Zhuoyue Extruders

All Zhuoyue extruders for waste plastic recycling granulation share a set of core technical features that make them ideal for the harsh conditions of plastic recycling, such as high contamination levels, irregular material shapes, and varying material properties:

• Robust Construction: Zhuoyue extruders are built with high-quality materials (such as alloy steel for screws and barrels) to withstand the wear and tear caused by contaminants in waste plastics. The screws and barrels are treated with special surface treatments (such as nitriding and hard chrome plating) to improve their wear resistance and service life.
• Precise Temperature Control: The extruders are equipped with advanced temperature control systems, including heating zones and cooling zones, to ensure precise control of the barrel and die temperature. This helps to avoid thermal degradation of the plastic and ensure complete melting and mixing.
• Efficient Conveying and Mixing: The screw designs are optimized for waste plastic recycling, with enhanced conveying capacity and mixing capabilities. Twin-screw extruders feature co-rotating screws with optimized flight profiles to ensure superior mixing and homogenization, while single-screw extruders have specially designed screws to improve conveying efficiency for soft plastics.
• Excellent Venting Performance: Twin-screw extruders are equipped with multiple venting ports to remove moisture, volatile gases, and air from the molten plastic, ensuring high-quality granules with minimal defects. The self-cleaning function of the venting section ensures efficient venting even with contaminated materials.
• Konsepsyon enèji-ekonomize: Zhuoyue extruders adopt energy-saving technologies such as variable frequency drives (VFD) and optimized motor configurations to reduce energy consumption. This helps to lower operating costs for recycling enterprises.
• Easy Operation and Maintenance: The extruders are designed with user-friendly interfaces and simple structures, making them easy to operate and maintain. The screws and barrels can be easily disassembled for cleaning and replacement, diminye D '.
• Customizable Configurations: Zhuoyue extruders can be customized with different screw lengths, diameters, and configurations to meet the specific needs of different types of waste plastics and production volumes. Pou egzanp, extruders for PET recycling can be equipped with special drying systems and venting ports to ensure complete moisture removal.

4.2 ZTE Series Extruders

The ZTE series is Zhuoyue’s cost-effective extruder series, designed for small and medium-sized recycling enterprises and general-purpose waste plastic recycling granulation. This series offers excellent cost-performance ratio, with parameters designed to suit most common waste plastics, enkli PP, PE, LDPE, and general-purpose ABS and PS. The ZTE series includes both single-screw and twin-screw extruders, providing flexible options for different applications.

4.2.1 Key Features of ZTE Series Extruders

• Excellent Cost-Performance Ratio: The ZTE series is designed to provide reliable performance at a competitive price, making it the ideal choice for enterprises with limited budgets or small-scale production needs. The initial investment and maintenance costs are significantly lower than high-end extruders, while still meeting the basic requirements of waste plastic recycling granulation.
• Versatile Parameter Design: The parameters of the ZTE series are designed to suit most common waste plastics, enkli PP, PE, LDPE, ABS, ak PS. This versatility allows enterprises to process multiple types of waste plastics with a single extruder, improving production flexibility and reducing equipment investment.
• Reliable Operation: The ZTE series adopts a reliable standard transmission system and simple structure, ensuring stable operation even in harsh recycling environments. The screws and barrels are designed to handle contaminants in waste plastics, reducing the risk of equipment failure.
• Low Maintenance Costs: The simple structure of the ZTE series makes it easy to maintain, with fewer moving parts and lower maintenance requirements. The screws and barrels can be easily replaced when worn, reducing downtime and maintenance costs.
• Suitable for Small to Medium-Scale Production: The ZTE series is available in a range of sizes, with throughputs ranging from 50kg/h to 500kg/h, making it suitable for small to medium-scale recycling operations.

4.2.2 ZTE Series Model Parameters

The ZTE series includes both single-screw and twin-screw extruders, with parameters tailored to different types of waste plastics. The following table details the parameters of the ZTE series twin-screw extruders, suitable for ABS, PS, and PET recycling granulation:

Modèl	Koupl espesifik (N.m/Cm³)	Pwensipal pouvwa motè (Kw)	Output speed（rpm）	Slot depth ratio D0/Di	Suitable Plastics
25	6	7.5	600	1.55	PS, Small-scale ABS
35	6	18.5	600	1.55	PS, ABS, LDPE
50	6	55	600	1.55/1.68	ABS, PS, PET (Small-scale)
65	6	110	600	1.55/1.68	ABS, PS, PET
75	6	160	600	1.55/1.68	ABS, PS, PET, PP
95	6	300	600	1.55/1.68	ABS, PS, PET, PP, PE

The ZTE series single-screw extruders are mainly used for PP, PE, and LDPE recycling granulation, with parameters optimized for soft plastics. The screws are designed with enhanced conveying capacity to handle the irregular shapes of crushed plastic films and bottles, ensuring efficient production.

4.2.3 Application Scenarios for ZTE Series

The ZTE series is ideal for the following application scenarios:

• Small and medium-sized recycling enterprises with limited budgets.
• General-purpose waste plastic recycling, enkli PP, PE, LDPE, ABS, ak PS.
• Production of general-purpose recycled granules for plastic films, low-grade injection-molded products, and construction components.
• Enterprises new to plastic recycling, thanks to the easy operation and low maintenance requirements of the ZTE series.

4.3 HTE Series Extruders

The HTE series is Zhuoyue’s mid-range extruder series, designed to bridge the gap between cost-effective extruders (such as ZTE series) and high-end extruders. This series combines high performance with high cost-effectiveness, bay pi gwo pwodiksyon pandan y ap diminye konsomasyon enèji. The HTE series includes both twin-screw and single-screw extruders, suitable for medium to large-scale waste plastic recycling granulation.

4.3.1 Key Features of HTE Series Extruders

• Balanced Performance and Cost-Effectiveness: The HTE series offers higher performance than the ZTE series, including better mixing capabilities, pi wo debi, and more precise temperature control, while maintaining a competitive price. This makes it suitable for enterprises that require higher granule quality but do not want to invest in high-end extruders.
• Energy-Saving and High Output: The HTE series is optimized for energy efficiency, with advanced motor configurations and variable frequency drives (VFD) to reduce energy consumption. An menm tan an, the extruders have higher throughput, allowing for medium to large-scale production (500kg/h to 1000kg/h) with lower energy costs.
• Reasonable Torque and Power Configuration: The HTE series has a reasonable torque and power configuration, ensuring stable and efficient production even when processing plastics with high contamination levels or varying properties. The twin-screw extruders have higher torque density, making them suitable for processing engineering plastics such as ABS and PET, while the single-screw extruders are optimized for soft plastics such as PP and PE.
• Dual-Speed Options for Partial Models: Some models of the HTE series are equipped with dual-speed options, allowing for flexible adjustment of the screw speed to suit different types of plastics and production requirements. This expands the application range of the extruders, making them suitable for multiple plastic types.
• Enhanced Wear Resistance: The screws and barrels of the HTE series are made of high-quality alloy steel and treated with advanced surface treatments to improve their wear resistance, ensuring a long service life even in harsh recycling environments.
• Advanced Control System: The HTE series is equipped with advanced PLC control systems, allowing for automatic control of temperature, vitès vis, presyon ekstrizyon, and other key parameters. This improves the stability and consistency of the granulation process, ensuring uniform granule quality.

4.3.2 HTE Series Model Parameters

The HTE series twin-screw extruders are suitable for ABS, PS, PET, PP, PE, and LDPE recycling granulation, with parameters optimized for high performance and efficiency. The following table details the specific parameters:

Modèl	Koupl espesifik (N.m/Cm³)	Pwensipal pouvwa motè (Kw)	Output speed（rpm）	Slot depth ratio D0/Di	Suitable Plastics	Debi (kg/h)
25	9	11	600	1.55	PS, ABS, LDPE	50-100
35	9	30	600	1.55	PS, ABS, PE, LDPE	100-200
35	9	45	1000	1.55	PS, ABS, PE, LDPE	200-300
50	9	75	600	1.55/1.68	ABS, PS, PET, PP	300-500
50	9	110	900	1.55/1.68	ABS, PS, PET, PP	500-700
65	9	160	600	1.55/1.68	ABS, PS, PET, PP, PE	700-900
65	9	220	900	1.55/1.68	ABS, PS, PET, PP, PE	900-1200
75	9	250	600	1.55/1.68	ABS, PS, PET, PP, PE, LDPE	1200-1500
75	9	315	900	1.55/1.68	ABS, PS, PET, PP, PE, LDPE	1500-1800
95	9	400	600	1.55/1.68	All common waste plastics	1800-2200

The HTE series single-screw extruders are optimized for PP, PE, and LDPE recycling granulation, with higher throughput and better energy efficiency compared to the ZTE series. They are suitable for medium to large-scale production of recycled granules for plastic films, tiyo, ak piki-moule pwodwi.

4.3.3 Application Scenarios for HTE Series

The HTE series is ideal for the following application scenarios:

• Medium to large-scale recycling enterprises with higher granule quality requirements.
• Recycling of multiple types of waste plastics, enkli PP, PE, LDPE, ABS, PS, ak PET.
• Production of high-quality recycled granules for automotive parts, electronic product accessories, and high-grade injection-molded products.
• Enterprises that focus on energy efficiency and cost reduction, thanks to the energy-saving design of the HTE series.

4.4 Customized Solutions from Zhuoyue

In addition to the standard ZTE and HTE series, Zhuoyue also provides customized extruder solutions for special waste plastic recycling needs. Pou egzanp:

• Customized extruders for high-contamination waste plastics, equipped with enhanced filtering systems to remove contaminants.
• Extruders for heat-sensitive plastics such as PET and PC, equipped with special drying systems and low-shear screws to avoid thermal degradation.
• Complete recycling granulation production lines, including crushers, dryers, extruders, pelletizers, and screening equipment, to provide a one-stop solution for enterprises.

Zhuoyue’s professional R&D team works closely with customers to understand their specific needs and provide tailored solutions that meet their production requirements and budget.

5. Best Practices for Waste Plastic Recycling Granulation with Zhuoyue Extruders

To ensure the best performance and granule quality when using Zhuoyue extruders for waste plastic recycling granulation, the following best practices are recommended:

5.1 Proper Sorting and Cleaning

Effective sorting and cleaning are essential to reduce the wear and tear on the extruder and ensure high-quality granules. Separate different types of plastics to avoid mixing, and remove non-plastic contaminants (tankou metal, papye, and glass) as much as possible. Thoroughly clean the waste plastics to remove oil, grès, ak résidus manje, which can affect the mixing and plasticizing effect.

5.2 Optimal Drying

Ensure that the crushed plastic pieces are properly dried to reduce the moisture content to below 0.5%. For moisture-sensitive plastics such as PET, use high-temperature drying (120-160°C) for a sufficient period to ensure complete moisture removal. This helps to avoid bubbles and defects in the recycled granules.

5.3 Precise Process Parameter Control

Adjust the extruder parameters (such as temperature, vitès vis, ak presyon extrusion) according to the type of waste plastic. Swiv paramèt yo rekòmande Zhuoyue bay, epi fè ajisteman ki baze sou pwopriyete materyèl aktyèl yo ak bon jan kalite granules. Evite tanperati ki twò wo oswa pousantaj taye, ki ka lakòz degradasyon plastik.

5.4 Antretyen regilye

Regilyèman enspekte epi kenbe extruder la asire operasyon nòmal li yo. Netwaye vis yo ak barik yo regilyèman pou retire nenpòt materyèl akimile oswa kontaminan. Tcheke mete vis yo ak barik yo, epi ranplase yo lè sa nesesè. Lubrifye pati k ap deplase yo regilyèman pou diminye friksyon ak pwolonje lavi sèvis extruder la.

5.5 Itilizasyon aditif (Si sa nesesè)

Pou dechè plastik ak degradasyon grav oswa pèfòmans pòv, konsidere ajoute aditif tankou estabilize, antioksidan, ak plastifyan pou amelyore kalite granules resikle yo. Consult Zhuoyue’s technical team to select the appropriate additives and dosage.

6. Konklizyon

Waste plastic recycling granulation is a critical technology for realizing resource circulation and environmental protection, offering significant economic, anviwònman, and social benefits. The quality and efficiency of the granulation process depend largely on the extruder used, and selecting the right extruder is essential for the success of a plastic recycling enterprise.

Zhuoyue’s ZTE series and HTE series extruders are specifically designed for waste plastic recycling granulation, combining high performance, efikasite, ekonomize enèji, ak pri-efikasite. The ZTE series provides a cost-effective solution for small and medium-sized enterprises and general-purpose plastic recycling, while the HTE series offers balanced performance and cost-effectiveness for medium to large-scale production with higher quality requirements. With robust construction, kontwòl tanperati egzak, superior mixing capabilities, and customizable configurations, Zhuoyue extruders can handle all types of waste plastics, from PP and PE to ABS and PET, delivering high-quality recycled granules for a wide range of applications.

As a leader in extrusion technology, Zhuoyue is committed to providing advanced, serye, and cost-effective solutions for the plastic recycling industry. With professional R&D, high-quality products, and comprehensive after-sales service, Zhuoyue helps enterprises unlock the full potential of waste plastic recycling, contributing to a more sustainable and environmentally friendly future.