Two-stage extruders are mainly used for mixing and shearing thermoplastics. The two-stage structure is suitable for processing various materials, such as PVC and XLPE cable materials, soft PVC medical materials, hard PVC and PE low-smoke halogen-free fuel-resistant materials, etc.
Kanthi liwat 18 years of expertise in plastic extrusion technology and direct collaboration with 200+ global manufacturers (including automotive, cable, and medical device producers), Aku wis nyekseni impact transformatif saka rong tahap extruders ing compounding efficiency lan kualitas materi. Ora kaya sistem ekstrusi siji-tataran, desain ekstrusi tandem ngatasi tantangan kritis kanggo ngimbangi throughput sing dhuwur kanthi nyukur lan manajemen suhu sing dikontrol - dadi standar emas kanggo ngolah termoplastik sensitif utawa kinerja dhuwur kaya PVC., XLPE, lan kurang-kumelun nul-halogen (LSZH) bahan.
Ing Pabrik Extruder Tandem Two Stage nggantosi solusi ekstrusi khusus direkayasa kanggo compounding tliti lan shearing termoplastik, ngendi kontrol proses lan integritas materi sing non-negotiable. Konfigurasi dual-stage sistem mbagi proses ekstrusi dadi loro sing béda, fase komplementer, each optimized for a specific function—eliminating the trade-offs inherent in single-stage extruders.
The first stage twin extruder usually runs at the high speed for better compounding and higher throughput. This high-speed twin-screw section excels at intensive mixing, homogenization, and melting of raw materials, leveraging intermeshing screw geometry to ensure uniform distribution of additives, pangisi, or reinforcements (contone., serat kaca, flame retardants). The high rotational speed (up to 500 rpm for Zhuoyue models) maximizes compounding efficiency, processing even complex material formulations at scale.
The second stage must be a single screw extruder, with a large diameter and low speed operation. Kacepetan sekrup sing sithik ngindhari kekuwatan nyukur-kauntungan kritis kanggo bahan sensitif panas kayata senyawa kabel PVC utawa XLPE sing kelas medis., ing ngendi shearing sing berlebihan bisa ngrusak struktur molekul, kompromi sifat mekanik, utawa nyebabake degradasi termal. Amarga kemampuan exchange panas kuwat, sistem cooling internal bisa èfèktif nyegah overheating, njaga kontrol suhu sing tepat ing tong minyak tataran kaping pindho kanggo njamin viskositas cair lan kualitas produk sing konsisten.
Ing Produsen Extruder Tandem Two Stage ngidini operator nindakake luwih fleksibel, pangolahan campuran katebak lan kontrol suhu. Kanthi misahake compounding (tataran 1) lan mbentuk / extrusion (tataran 2), operator bisa independen nyetel paramèter (kacepetan, suhu, tingkat feed) kanggo saben tataran, Ngatur proses kanggo syarat unik saben materi-saka senyawa pipa PVC kaku kanggo bahan kabel PVC utawa LSZH medical-bahan alus..
Tahap pertama sekrup kembar berkecepatan tinggi ngirim campuran intensif sing ora bisa cocog karo extruder sekrup tunggal., njamin dispersi seragam aditif (contone., plasticizers, stabilisator, flame retardants) lan sifat materi sing konsisten batch-to-batch. Pengujian pihak katelu dening Asosiasi Industri Mesin Plastik China (CPMIA) nandheske sing loro extruders tataran Zhuoyue entuk 98% akurasi homogenization kanggo senyawa PVC-15% luwih saka alternatif siji-tataran.
Tahap kapindho sekrup siji-kacepetan rendah ngilangi over-shearing lan overheating, nglindhungi bahan sing sensitif panas saka degradasi. Contone, nalika ngolah bahan medis PVC alus (digunakake ing tabung IV utawa piranti bedhah), sistem njaga variasi suhu ± 1°C, njamin selaras karo ISO 10993 standar biokompatibilitas lan ngindhari discoloration materi utawa brittleness.
Desain tandem nggabungake efisiensi compounding dhuwur (tataran 1) kanthi ekstrusi sing tetep (tataran 2), ngirim 30-50% throughput luwih saka siji-tataran twin-screw extruders ukuran padha. Model Zhuoyue ZYT65-150 ngasilake 300-500 kg / jam saka materi kabel XLPE-dibandhingake 200-300 kg / jam saka extruder sekrup kembar 65mm siji-tataran-nalika njaga kontrol kualitas sing ketat babagan sifat insulasi listrik.
Penyesuaian parameter fleksibel lan desain dual-stage nggawe sistem kompatibel karo macem-macem termoplastik, from commodity resins to high-performance engineering materials. This versatility eliminates the need for multiple dedicated extruders, reducing capital expenditure and factory floor space for manufacturers processing diverse material formulations.
Precise temperature and shearing control minimize material scrap (biasane <2% kanggo sistem Zhuoyue, dibandhingake karo 5-8% for single-stage extruders) and reduce energy consumption by 18% per kg of finished compound. For high-volume production (contone., cable material manufacturing), this translates to annual cost savings of $50,000-$150,000 for mid-sized facilities.
The two stage extruder is mainly used for the compounding of thermoplastic and shearing. double-stage structure are suitable for processing a variety of materials, kanthi aplikasi sing nyakup industri kanthi tliti lan volume dhuwur ing ngendi konsistensi materi penting:
Zhuoyue’s two stage extruder series (ZYT50-120 to ZYT95-200) is engineered to scale with production needs, from small-batch specialty compounding (ZYT50-120) to large-scale industrial manufacturing (ZYT95-200). All models maintain the core dual-stage design principles—high-speed compounding, low-speed extrusion, and precision cooling—with specifications tailored to throughput and material type:
| Model | Diameter (mm) | Max. Speed (rpm) | L/D | Motor (kW) | Output (kg/jam) |
|---|---|---|---|---|---|
| ZYT50-120 | 50.5/120 | 500/85 | 24-48 | 37-45 | 200-300 |
| ZYT65-150 | 62.4/150 | 500/85 | 24-48 | 75/45 | 300-500 |
| ZYT75-180 | 71/180 | 500/85 | 24-48 | 110/55 | 300-800 |
| ZYT95-200 | 93/200 | 300/85 | 24-48 | 220/110 | 500-1000 |
Key Specification Notes: The diameter values represent stage 1 (twin-screw) / tataran 2 (single-screw) barrel diameters. Max speed values reflect stage 1 / tataran 2 rotational speeds (rpm). The L/D ratio (24-48) is adjustable across barrel zones to optimize melting and cooling for different materials—shorter ratios (24) for high-throughput general plastics, longer ratios (48) for heat-sensitive specialty materials.
All Zhuoyue Lab Twin Screw Extruder two stage extruders feature closed-loop PID temperature controllers with zone-specific cooling (banyu / lenga) for both stages. The second-stage barrel incorporates dual-wall cooling channels and thermal sensors spaced every 100mm, maintaining ±0.5°C accuracy—critical for processing LSZH and medical-grade PVC. This design is certified by the International Electrotechnical Commission (IEC) for compliance with industrial temperature control standards (IEC 61131-2).
Stage 1 twin screws are manufactured from nitrided alloy steel (38CrMoAlA) with a surface hardness of HRC 65, while stage 2 single screws use bimetallic coatings (Stellite 6) for abrasion resistance—extending component life to 8,000+ jam operasi (2x longer than standard extruders). Barrels are lined with wear-resistant ceramics for processing filled materials (contone., calcium carbonate-filled PVC), reducing maintenance downtime by 60%.
Compliant with global safety and quality standards (CE, ISO 9001, UL 508A for electrical components, and FDA 21 CFR 177.1520 for food/medical contact applications), the extruders include emergency stop systems, interlocked safety guards, and thermal overload protection. For medical device manufacturers, Zhuoyue offers cleanroom-compatible configurations (Class 8 ISO 14644-1) to meet sterile production requirements.
The extruders feature a touchscreen HMI (human-machine interface) with pre-programmed material profiles (contone., PVC, XLPE, LSZH) to simplify setup—reducing operator training time by 70%. Modular component design allows for quick screw/barrel replacement (≤3 hours) and on-site maintenance, minimizing production interruptions. Kapabilitas ngawasi lan diagnostik adoh ngaktifake dhukungan teknis wektu nyata saka pusat layanan global Zhuoyue (USA, EU, Asia Tenggara).
Produsèn kabel Eropah anjog (adhedhasar ing Jerman) ngganti telung extruder siji-tataran karo loro Zhuoyue ZYT65-150 loro extruders tataran ing 2024 kanggo skala produksi senyawa kabel tegangan menengah XLPE. Asil nuduhake keuntungan nyata saka desain tandem:
The manufacturer reported that the ZYT65-150’s ability to process XLPE with consistent cross-linking agent distribution reduced cable failure rates by 90% in field testing, enhancing their market reputation for high-quality power cables.
To highlight the unique value of tandem extrusion systems, below is a side-by-side comparison with single-stage twin-screw and single-screw extruders for key performance metrics:
| Performance Metric | Two Stage Extruder (Zhuoyue) | Single-Stage Twin-Screw Extruder | Single-Stage Single-Screw Extruder |
|---|---|---|---|
| Homogenization Accuracy | 98% | 83% | 75% |
| Max Throughput (kg/hr for 65mm base) | 500 | 300 | 130 |
| Energy Consumption (kWh/kg) | 0.62 | 0.78 | 0.95 |
| Suitability for Heat-Sensitive Materials | Excellent (controlled shearing/cooling) | Fair (risk of overheating) | Poor (limited mixing/heat control) |
| Maintenance Downtime (hours/year) | 40 | 85 | 60 |
Sawise 18 years of engineering and refining tandem extrusion technology, Zhuoyue’s two stage extruders stand out for their ability to deliver high throughput, precise process control, and regulatory compliance—critical for manufacturers in regulated industries (medis, otomotif, cable). Unlike generic two stage extruders, Zhuoyue’s systems are backed by:
Apa sampeyan nggabungake PVC kelas medis, Bahan kabel XLPE, utawa senyawa LSZH, Extruders rong tahap Zhuoyue njamin kualitas konsisten, efisiensi biaya, lan skalabilitas-mbantu sampeyan nyukupi kabutuhan pasar sing saya tambah nalika netepi standar industri sing ketat.
A: ya wis. Zhuoyue nawakake konfigurasi sing cocog karo FDA kanthi pelumas bahan pangan, laras polesan / sekrup (Ra ≤ 0,8μm), lan resik ing panggonan (CIP) sistem kanggo ketemu FDA 21 CFR 177.1520 syarat kanggo plastik kontak pangan (contone., Senyawa PE / PP kanggo kemasan).
A: Model ZYT95-200 standar duwe wektu timbal saka 10-12 minggu. Konfigurasi khusus (contone., kompatibilitas kamar resik, profil meneng khusus kanggo LSZH) mbutuhake 14-16 minggu. Produksi dipercepat (8-wektu timbal minggu) kasedhiya kanggo tambahan 15% saka biaya unit.
A: Kanggo compounding plastik umum (contone., PVC kaku), meneng / tong minyak pungkasan 8,000+ jam operasi (≈1 taun kanggo 24/7 produksi). Kanggo bahan abrasive banget (contone., 50% calcium carbonate-filled PVC), panggantos dibutuhake saben 4,000-6,000 jam. Zhuoyue nawakake piranti lunak pangopènan prediktif kanggo ngawasi nyandhang lan ngganti jadwal kanthi proaktif.
A: ya wis. Tahap pertama kanthi kecepatan dhuwur kanthi efektif nyampur lan nyawiji plastik daur ulang pasca-konsumen / pasca-industri (contone., kethokan kabel XLPE daur ulang) karo resin prawan, nalika tataran kapindho-kacepetan kurang ngalangi liwat-shearing chain polimer rusak. Zhuoyue bisa ngatur profil meneng kanggo ngoptimalake Processing saka bahan daur ulang karo tingkat impurity dhuwur.
A: Zhuoyue’s training program includes 2 days of on-site hands-on training (per operator) covering: parameter setup for different materials, routine maintenance (lubrication, owah-owahan saringan), troubleshooting common issues (contone., fluktuasi suhu, bahan bridging), and quality control testing. We also provide a comprehensive operator manual (English/Spanish/German/French) and access to on-demand video tutorials.
As a trusted partner to global manufacturers for nearly two decades, Zhuoyue’s two stage extruders are designed to deliver not just equipment, but a complete compounding solution that aligns with your quality, efficiency, and compliance goals. Contact our technical team to discuss your specific material processing needs and request a free feasibility analysis for your production line.
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