Granulasi Daur Ulang Plastik Lanjut: Teknologi, Peralatan lan Zhuoyue Extruder Solutions

Ing jaman nambah kesadaran lingkungan lan kabijakan konservasi sumber daya sing ketat, daur ulang plastik wis dadi fokus kritis kanggo industri donya. Antarane macem-macem teknologi daur ulang plastik, sampah plastik daur ulang granulation stands metu minangka praktis, efisien, lan cara ekonomi sing bisa ngowahi bahan plastik sing dibuwang dadi granula sing bisa digunakake maneh. Butiran daur ulang iki bisa diolah maneh dadi produk plastik anyar, karo tingkat kinerja iso dibandhingke karo sing digawe saka bahan prawan, saéngga nyadari sirkulasi sumber daya sing bener lan nyuda beban lingkungan sing disebabake sampah plastik.

Zhuoyue, Produsèn anjog saka peralatan extrusion, wis setya nyedhiyakake jalur produksi granulasi daur ulang lengkap kanggo kabeh jinis plastik sampah, kalebu PP (Polipropilena), PE (Poliethelin), LDPE (Polyethylene Kapadhetan Sedheng), PET (Polyethylene Terephthalate), PS (Polystyrene), ABS (Acrylonitrile Butadiene Styrene), lan liyane. Kanthi teknologi ekstrusi majeng lan keahlian sing jero babagan daur ulang plastik, Extruders Zhuoyue dirancang kanggo nyukupi tantangan unik saka granulasi plastik sampah, ngirim efisien, hemat energi, lan solusi berkualitas tinggi kanggo perusahaan sing melu daur ulang plastik.

1. Ringkesan Granulasi Daur Ulang Plastik Sampah

Granulasi daur ulang plastik sampah minangka proses khusus sing ngowahi macem-macem bentuk plastik sampah-kayata botol plastik., film, wadhah, scraps saka jalur produksi, lan sampah plastik sawise konsumen - dadi seragam, granules plastik kualitas dhuwur liwat seri saka pangobatan mechanical lan termal. Iki granula daur ulang, uga dikenal minangka regranulates utawa reprocessed plastik pelet, bisa langsung digunakake ing ngecor injeksi, ekstrusi, jotosan ngecor, lan cara pangolahan plastik liyane kanggo ngasilake produk anyar, wiwit saka bahan kemasan lan komponen konstruksi nganti bagean otomotif lan kabutuhan saben dina.

Nilai inti saka granulasi daur ulang sampah plastik dumunung ing kemampuan kanggo ngatasi tantangan dual pembuangan sampah plastik lan kekurangan sumber daya.. Beda karo cara pembuangan sampah plastik tradisional kayata landfilling lan insineration, sing nyebabake risiko lingkungan sing abot, granulasi daur ulang entuk daur ulang sumber daya sing bener:

Perlindungan Lingkungan: TPA sampah plastik ngenggoni sumber daya tanah sing larang regane lan bisa nyebabake polusi lemah lan banyu lemah, amarga plastik iku non-biodegradable lan bisa ngeculake zat mbebayani liwat wektu. Insinerasi, ing sisih liyane, ngetokake gas beracun (kayata dioxin lan karbon monoksida) lan partikel, nyumbang kanggo polusi udara lan pemanasan global. Daur ulang granulasi nyuda jumlah sampah plastik sing mlebu ing TPA lan insinerator, minimalake polusi lingkungan lan emisi karbon.
Konservasi Sumber Daya: Plastik asalé saka bahan bakar fosil sing ora bisa dianyari (kayata lenga lan gas alam). Kanthi daur ulang plastik sampah dadi granula sing bisa digunakake maneh, dikarepake kanggo bahan plastik prawan suda, ngreksa sumber daya fosil terkenal lan ngurangi konsumsi energi gadhah produksi plastik prawan. Dikira-kira yen daur ulang siji ton plastik bisa ngirit nganti 7.4 tong minyak lan ngurangi emisi karbon dening 1.5 ton.
Paedah Ekonomi: Butiran plastik daur ulang luwih murah tinimbang bahan plastik prawan, nawakake tabungan biaya substansial kanggo manufaktur. Kanggo perusahaan daur ulang, proses ngumpulake, pangolahan, lan plastik sampah granulating bisa generate bathi stabil, nggawe kesempatan ekonomi anyar lan posisi Employment. Kajaba iku, akeh negara lan wilayah nawakake insentif kebijakan (kayata subsidi lan ngilangi pajak) kanggo perusahaan daur ulang plastik, luwih ningkatake kaslametan ekonomi daur ulang granulasi.

Nanging, kualitas granula plastik daur ulang lan kinerja produk daur ulang pungkasan gumantung banget marang proses granulasi lan peralatan sing digunakake.. Faktor kayata jinis lan kemurnian sampah plastik, efisiensi ngurutake lan ngresiki, kontrol suhu lan geser sajrone ekstrusi, lan desain extruder kabeh duwe impact pinunjul ing kualitas produk final. Mulane, ngembangaken prasaja, trep, efisien, hemat energi, ramah lingkungan, lan proses granulasi ekonomi sregep wis dadi fokus riset lan pangembangan ing industri daur ulang plastik.

1.1 Karakteristik Utama Granules Plastik Daur Ulang

Kinerja granula plastik daur ulang raket banget karo jinis sampah plastik, tingkat kontaminasi, lan proses granulasi. Umume, granula daur ulang sing berkualitas tinggi kudu nduweni karakteristik ing ngisor iki:

Ukuran Partikel Seragam: Ukuran partikel konsisten njamin dipakani stabil sak Processing sakteruse (kayata ngecor injeksi lan extrusion), ningkatake keseragaman lan kualitas produk pungkasan. Ukuran partikel saka granula daur ulang biasane antarane 2mm lan 5mm, gumantung ing syarat aplikasi.
Kurang Kontaminasi: Contaminants kayata rereget, bledug, pecahan logam, kertas, lan bahan non-plastik liyane bisa mengaruhi kinerja granula daur ulang lan produk pungkasan. Mulane, ngurutake efektif lan ngresiki plastik sampah penting kanggo njamin tingkat kontaminasi sing sithik.
Plasticity apik lan Processability: Granul daur ulang kudu nduweni sifat leleh lan keluwesan sing apik, ngidini proses gampang dadi produk anyar tanpa mengaruhi efisiensi pangolahan utawa kualitas produk. Iki mbutuhake kontrol suhu lan tingkat geser sing tepat sajrone proses granulasi supaya ora rusak banget saka struktur molekul plastik..
Properti Mekanik Stabil: Kekuwatan tensile, elongation ing break, kekuatan impact, lan sifat mekanik liyane saka granula daur ulang kudu cedhak karo bahan asli, mesthekake yen produk daur ulang pungkasan cocog karo standar kinerja sing dibutuhake.
Isi Kelembapan sing sithik: Isi kelembapan sing dhuwur ing granula daur ulang bisa nyebabake cacat kayata gelembung lan retak ing produk pungkasan sajrone proses.. Mulane, langkah pangatusan asring dibutuhake sak proses granulasi kanggo ngurangi isi Kelembapan kanggo tingkat ditrima (biasane ing ngisor iki 0.5%).

1.2 Jinis Umum Sampah Plastik kanggo Granulasi

Meh kabeh jinis plastik termoplastik bisa didaur ulang lan granulasi, nalika thermosetting plastik (sing ora bisa dilebur lan diolah maneh) ora cocok kanggo daur ulang granulasi. Jinis plastik sampah sing paling umum digunakake ing daur ulang granulasi kalebu:

PP (Polipropilena): A termoplastik sing akeh digunakake kanthi resistensi kimia sing apik, sifat mekanik, lan kemampuan proses. PP sampah umum kalebu ember plastik, wadhah, tutup, lan sisa produksi. Recycled PP granules are often used to produce plastic pipes, auto parts, and packaging materials.
PE (Poliethelin): Divided into LDPE (Polyethylene Kapadhetan Sedheng) and HDPE (Polyethylene Kapadhetan Dhuwur). LDPE is commonly used in plastic films, tas, lan gendul, while HDPE is used in barrels, pipa, lan wadhah. Recycled PE granules are suitable for producing plastic films, pipa, and injection-molded products.
PET (Polyethylene Terephthalate): A transparent, rigid plastic commonly used in beverage bottles, kemasan pangan, and fiber products. Recycled PET granules are widely used in the production of polyester fibers, gendul plastik, and packaging materials.
PS (Polystyrene): Available in rigid (such as foam cups, wadhah panganan, and plastic toys) and foam (EPS, expanded polystyrene) forms. Recycled PS granules can be used to produce plastic toys, decorative materials, and foam products.
ABS (Acrylonitrile Butadiene Styrene): A high-performance plastic with good impact strength, rigidity, lan tahan panas. Common waste ABS includes plastic shells of electronic products, auto parts, lan dolanan. Granul ABS daur ulang digunakake kanggo ngasilake cangkang produk elektronik, auto parts, lan komponen injeksi-nyetak.

Jalur produksi granulasi daur ulang Zhuoyue dirancang kanggo nangani kabeh plastik sampah sing kasebut ing ndhuwur., karo konfigurasi peralatan selaras kanggo nyukupi syarat Processing tartamtu saka macem-macem jinis plastik.

2. Proses Granulasi Daur Ulang Plastik Sampah

Proses granulasi daur ulang plastik sampah biasane kalebu sawetara langkah penting: sampah plastik koleksi lan ngurutake, reresik, ngremuk, pangatusan, granulasi ekstrusi, pendinginan, lan nglereni. Saben langkah nduweni peran penting kanggo njamin kualitas granula daur ulang pungkasan. Parameter proses tartamtu bisa beda-beda gumantung saka jinis sampah plastik, tingkat kontaminasi, lan kualitas sing dikarepake saka granula daur ulang.

2.1 Koleksi lan Ngurutake

Langkah pisanan ing proses granulasi daur ulang yaiku nglumpukake lan ngurutake sampah plastik. Sampah plastik diklumpukake saka macem-macem sumber, kalebu kluwarga, industri, panyiapan komersial, lan jalur produksi. Amarga macem-macem sampah plastik lan anané rereged, Ngurutake penting kanggo njamin kualitas granula daur ulang.

Urut bisa ditindakake kanthi manual utawa mekanis. Ngurutake manual cocok kanggo operasi daur ulang skala cilik lan kalebu misahake macem-macem jinis plastik, mbusak rereged non-plastik (kayata logam, kertas, kaca, lan sampah organik), lan ngurutake plastik miturut warna lan kualitas. Pengurutan mekanik, ing sisih liyane, luwih efisien lan cocok kanggo operasi skala gedhe, nggunakake teknologi kayata pamisahan kepadatan (pamisahan sink-float), pamisahan magnetik, pamisahan elektrostatik, and infrared sorting to separate different plastic types and remove contaminants.

Effective sorting is critical because mixing different types of plastics can lead to a significant reduction in the performance of the recycled granules. Contone, mixing PP and PET can cause phase separation during extrusion, resulting in poor plasticity and mechanical properties of the granules.

2.2 Reresik

Sawise ngurutake, the waste plastics are cleaned to remove surface contaminants such as dirt, bledug, oil, grease, food residues, lan label. The cleaning process typically involves several steps:

Pre-cleaning: Removing large contaminants (such as labels, tutup, and metal fragments) and coarse dirt through brushing, blowing, or manual picking.
ngumbah: Soaking the waste plastics in a cleaning solution (usually water with detergent or alkali) to remove oil, grease, and food residues. Agitation utawa reresik ultrasonik bisa digunakake kanggo nambah efek reresik.
mbilas: Mbusak plastik sing wis diresiki nganggo banyu sing resik kanggo mbusak solusi lan rereged sing isih ana.
Dewatering: Mbusak keluwihan banyu saka plastik sing wis diresiki nggunakake centrifuge, mesin dewatering, utawa pangatusan online kanggo ngurangi isi Kelembapan lan nggampangake Processing sakteruse.

Efek reresik langsung mengaruhi kualitas granula daur ulang. Reresik sing ora nyukupi bisa nyebabake kontaminasi granula, mengaruhi kemampuan proses lan sifat mekanik. Contone, residu lenga lan pelumas bisa nyebabake adhesi sing ora apik ing antarane molekul plastik sajrone ekstrusi, ngasilake kekuatan tarik sing kurang saka granula.

2.3 Remuk

Sawise reresik lan dewatering, sampah plastik digiling dadi cilik-cilik (serpihan utawa pecahan) nggunakake crusher. Crushing mbantu nambah area lumahing plastik, nggampangake leleh lan nyawiji sajrone proses ekstrusi. Iki uga mbantu mbusak rereged cilik sing isih ana ing plastik.

Jinis crusher sing digunakake gumantung saka jinis lan wujud sampah plastik. Jenis umum crusher kalebu jaw crusher, palu crusher, blade crushers, lan granulator. Kanggo plastik fleksibel (kayata film plastik lan tas), pisau crusher biasane digunakake, nalika kanggo plastik kaku (kayata botol plastik lan wadhah), palu crusher utawa jaw crusher luwih cocok. Ukuran potongan plastik remuk biasane antarane 5mm lan 20mm, gumantung saka jinis extruder sing digunakake lan ukuran granule sing dikarepake.

2.4 pangatusan

Malah sawise dewatering, bêsik plastik ulig isih bisa ngemot jumlah tartamtu saka Kelembapan. Isi kelembapan sing dhuwur bisa nyebabake cacat kayata gelembung, retak, lan kualitas permukaan sing kurang apik ing granula daur ulang sajrone ekstrusi. Mulane, langkah pangatusan perlu kanggo ngurangi isi Kelembapan saka bêsik plastik ulig kanggo tingkat ditrima (biasane ing ngisor iki 0.5%).

Cara pangatusan umum kalebu pangatusan hawa panas, pangatusan vakum, lan pangatusan infra merah. Pangatusan hawa panas minangka cara sing paling akeh digunakake, kang melu ngliwati hawa panas (ing suhu 80-120 ° C) liwat bêsik plastik ulig kanggo nguapaké Kelembapan. Wektu pangatusan lan suhu gumantung saka jinis plastik lan kandungan kelembapan awal. Contone, PET luwih sensitif marang kelembapan lan mbutuhake suhu pangatusan sing luwih dhuwur (120-160°C) lan wektu pangatusan maneh kanggo mesthekake mbusak Kelembapan lengkap.

2.5 Granulasi Ekstrusi

Granulasi ekstrusi minangka langkah inti ing proses granulasi daur ulang plastik sampah. Iku kalebu leleh, nyampur, lan homogenizing bêsik plastik ulig pepe nggunakake extruder, banjur extruding plastik molten liwat die kanggo mbentuk untaian terus-terusan, kang banjur digawe adhem lan Cut menyang granules seragam.

Extruder minangka peralatan utama ing langkah iki, lan kinerja langsung nemtokake kualitas lan efisiensi proses granulasi. Ana rong jinis utama extruder sing digunakake ing granulasi daur ulang plastik sampah: twin-screw extruders lan single-screw extruders. Saben jinis nduweni kaluwihan dhewe lan cocok kanggo macem-macem jinis sampah plastik, minangka rinci ing bagean 3.

Sajrone granulasi ekstrusi, sawetara paramèter proses utama kudu dikontrol kanthi tepat:

Suhu: Suhu tong minyak extruder lan die kritis kanggo nyawiji plastik lan njamin campuran lan homogenisasi sing apik.. Macem-macem jinis plastik duwe titik leleh sing beda, lan suhu tong minyak biasane disetel 10-30 ° C ndhuwur titik leleh saka plastik kanggo mesthekake leleh lengkap. Contone, suhu tong minyak kanggo PP biasane 170-220 ° C, nalika kanggo PET iku 260-280 ° C. Suhu sing dhuwur banget bisa nyebabake degradasi termal saka plastik, ndadékaké nyuda sifat mekanik saka granula daur ulang, nalika suhu sing sithik banget bisa nyebabake leleh sing ora lengkap lan campuran sing ora apik.
Laju geser: Tingkat nyukur ditemtokake dening kacepetan meneng lan desain meneng. Tingkat geser sing cocog mbantu nghomogenake plastik molten, nyebarake rereged sing isih ana, lan nambah plasticity saka granules. Nanging, tingkat geser sing dhuwur banget bisa nyebabake degradasi mekanik saka struktur molekul plastik, anjog kanggo suda kinerja.
Kacepetan meneng: Kacepetan meneng mengaruhi throughput, efisiensi leleh, lan kualitas campuran. Kacepetan sekrup sing luwih dhuwur bisa nambah throughput nanging bisa nyuda efisiensi leleh lan nyampur, nalika kacepetan meneng ngisor bisa nambah kualitas nyawiji nanging nyuda throughput. Kacepetan sekrup optimal gumantung saka jinis plastik, jinis extruder, lan kualitas granula sing dikarepake.
Tekanan Ekstrusi: Tekanan ekstrusi ditemtokake dening desain die, kacepetan meneng, lan viskositas materi. Tekanan ekstrusi stabil njamin pembentukan untaian seragam lan ukuran granula sing konsisten. Tekanan sing dhuwur banget bisa nyebabake penyumbatan mati, nalika tekanan banget sithik bisa nyebabake untaian sing ora rata.

2.6 Cooling lan Cutting

After extrusion through the die, the continuous plastic strands are cooled to solidify them. Cooling can be done using air cooling or water cooling. Water cooling is more efficient and is widely used in large-scale granulation operations, involving passing the strands through a water tank or water spray to quickly cool them to room temperature. Air cooling is suitable for small-scale operations or for plastics that are sensitive to water (kayata sawetara plastik engineering).

Once the strands are cooled and solidified, they are cut into uniform granules using a pelletizer. The pelletizer is typically installed at the exit of the cooling system and can be adjusted to control the length of the granules (usually between 2mm and 5mm). Common types of pelletizers include strand pelletizers, water ring pelletizers, and underwater pelletizers. Strand pelletizers minangka jinis sing paling akeh digunakake kanggo granulasi daur ulang plastik sampah, amarga padha prasaja ing struktur, gampang operate, lan cocok kanggo paling jinis plastik.

2.7 Screening lan Packaging

Sawise nglereni, granula daur ulang disaring nganggo layar geter kanggo mbusak granula sing kegedhen utawa ukurane kurang, njamin ukuran partikel seragam. Butiran sing disaring banjur dikeringake maneh (yen perlu) kanggo mbusak sembarang Kelembapan digunakke sak cooling, banjur dikemas ing tas utawa wadhah akeh kanggo panyimpenan lan transportasi.

Kemasan minangka langkah penting kanggo nyegah kontaminasi lan penyerapan kelembapan saka granul daur ulang. Bahan kemasan kudu tahan kelembapan lan resik, lan granule kudu disimpen ing panggonan sing garing, berventilasi, lan gudang sing resik kanggo njaga kualitase.

3. Pamilihan Extruder kanggo Granulasi Daur Ulang Plastik Limbah

Kaya sing wis kasebut sadurunge, extruder minangka peralatan inti ing proses granulasi daur ulang plastik sampah. Pilihan saka extruder tengen gumantung ing jinis sampah plastik, kualitas granula sing dikarepake, volume produksi, lan anggaran. Ana rong jinis utama extruder sing digunakake ing granulasi daur ulang plastik sampah: twin-screw extruders lan single-screw extruders. Saben jinis nduweni kaluwihan unik dhewe lan cocok kanggo macem-macem aplikasi.

3.1 Twin-screw Extruders kanggo daur ulang Granulation

Extruders twin-screw digunakake digunakake ing granulasi daur ulang plastik rekayasa lan plastik kanthi tingkat kontaminasi sing dhuwur., kayata ABS, PS, lan PET. Padha kalebu rong sekrup podo sing muter ing arah sing padha (co-rotating) utawa arah ngelawan (counter-puteran) ing laras. Co-rotating twin-screw extruders luwih umum digunakake ing daur ulang plastik amarga kemampuan nyampur lan ngirim sing unggul.

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 (biasane 1-5 menit) 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 (kayata stabilisator, antioksidan, lan pewarna) 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, auto parts, lan dolanan. 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.
Rekayasa Plastik: Other engineering plastics such as PC (Polikarbonat), PA (Poliamida), 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.
Cost-Effective: Waste plastic recycling often involves materials with high levels of contaminants, kang bisa nimbulaké nyandhang wujud lan luh ing meneng extruder lan tong minyak. Extruders sekrup tunggal luwih prasaja ing struktur lan nggunakake bahan sing luwih murah, nggawe wong luwih biaya-efektif kanggo ngganti lan njaga dibandhingake extruders kembar-meneng. Iki penting banget kanggo perusahaan daur ulang cilik lan menengah kanthi anggaran winates.
Cocog kanggo Plastik Soft: Efisiensi ngirim materi saka extruders sekrup siji gumantung saka kinerja gesekan saka bahan padhet lan viskositas leleh.. Plastik alus kayata PP, PE, lan LDPE duwe kinerja gesekan apik lan viskositas leleh kurang, nggawe wong becik kanggo Processing karo extruders siji-meneng. Plastik kasebut bisa dikirim lan dilebur kanthi efisien, ensuring good granule quality.
Operasi prasaja lan Maintenance: Single-screw extruders duwe struktur prasaja, 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 (Polipropilena): 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 (Poliethelin): Both LDPE and HDPE are suitable for processing with single-screw extruders. LDPE, ing tartamtu, 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 Kapadhetan Sedheng): 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).
Volume Produksi: 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.
Anggaran: Twin-screw extruders are more expensive than single-screw extruders, both in terms of initial investment and maintenance costs. Mulane, enterprises with limited budgets may prefer single-screw extruders for general-purpose plastic recycling.
Konsumsi Energi: 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, efisiensi, hemat energi, lan efektifitas biaya. 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.
Desain Ngirit Energi: 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.
Gampang Operasi lan Pangopènan: 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, nyuda downtime.
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. Contone, 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, kalebu 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, kalebu PP, PE, LDPE, ABS, lan 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:

Model	Torsi spesifik (N.m/Cm³)	Daya motor utama (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, kalebu PP, PE, LDPE, ABS, lan 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, delivering higher output while reducing energy consumption. 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, throughput sing luwih dhuwur, 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. Ing wektu sing padha, 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, kacepetan meneng, tekanan ekstrusi, 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:

Model	Torsi spesifik (N.m/Cm³)	Daya motor utama (Kw)	Output speed（rpm）	Slot depth ratio D0/Di	Suitable Plastics	Throughput (kg/jam)
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, pipa, and injection-molded products.

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, kalebu PP, PE, LDPE, ABS, PS, lan 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. Contone:

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, pengering, 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 (kayata logam, kertas, and glass) as much as possible. Thoroughly clean the waste plastics to remove oil, grease, and food residues, 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 (kayata suhu, kacepetan meneng, lan tekanan ekstrusi) according to the type of waste plastic. Follow the recommended parameter settings provided by Zhuoyue, and make adjustments based on the actual material properties and granule quality. Avoid excessively high temperatures or shear rates, which can cause plastic degradation.

5.4 Regular Maintenance

Regularly inspect and maintain the extruder to ensure its normal operation. Clean the screws and barrels regularly to remove any accumulated material or contaminants. Check the wear of the screws and barrels, and replace them when necessary. Lubricate the moving parts regularly to reduce friction and extend the service life of the extruder.

5.5 Use of Additives (If Necessary)

For waste plastics with severe degradation or poor performance, consider adding additives such as stabilizers, antioksidan, and plasticizers to improve the quality of the recycled granules. Hubungi tim teknis Zhuoyue kanggo milih aditif lan dosis sing cocog.

6. Kesimpulan

Granulasi daur ulang plastik sampah minangka teknologi kritis kanggo nggayuh sirkulasi sumber daya lan perlindungan lingkungan, nawakake ekonomi sing signifikan, lingkungan, lan keuntungan sosial. Kualitas lan efisiensi proses granulasi gumantung banget marang extruder sing digunakake, lan milih extruder tengen penting kanggo sukses perusahaan daur ulang plastik.

Zhuoyue seri ZTE lan seri HTE extruders dirancang khusus kanggo granulasi daur ulang plastik sampah, combining high performance, efisiensi, hemat energi, lan efektifitas biaya. Seri ZTE nyedhiyakake solusi larang regane kanggo perusahaan cilik lan menengah lan daur ulang plastik tujuan umum., nalika seri HTE nawakake kinerja imbang lan efektifitas biaya kanggo produksi medium nganti gedhe kanthi syarat kualitas sing luwih dhuwur. Kanthi konstruksi sing kuwat, kontrol suhu sing tepat, kemampuan nyampur unggul, lan konfigurasi customizable, Zhuoyue extruders bisa nangani kabeh jinis sampah plastik, saka PP lan PE kanggo ABS lan PET, ngirimake granula daur ulang sing bermutu kanggo macem-macem aplikasi.

Minangka pimpinan ing teknologi ekstrusi, Zhuoyue setya nyedhiyakake majeng, linuwih, lan solusi biaya-efektif kanggo industri daur ulang plastik. Kanthi profesional R&D, produk kualitas dhuwur, lan layanan sawise-sales lengkap, Zhuoyue mbantu perusahaan mbukak potensi daur ulang plastik sampah, nyumbang kanggo masa depan sing luwih lestari lan ramah lingkungan.

Daftar Isi