Conical Twin Screw Barrel For Wood-Plastic Composite Extrusion
Zhejiang Zhongyang Screw Manufacturing Co., Ltd. is one of the leading manufacturers and suppliers of conical twin screw barrel for wood-plastic composite extrusion in China. With abundant experience, we warmly welcome you to buy durable conical twin screw barrel for wood-plastic composite extrusion from our factory. All customized products are with high quality and competitive price.
Product Description
WPC extrusion demands components that resist severe abrasion from wood fibers while ensuring thorough mixing of polymer, fiber, and coupling agents. Our conical twin screw barrel utilizes a bimetallic barrel lining (HRC 58–64) and a nitrided or coated screw to extend service life dramatically. The conical geometry promotes gentle, progressive compression, preventing fiber burning or degradation while achieving excellent filler distribution. The result is a smooth, dense profile with consistent mechanical properties. We offer custom screw designs, including different mixing elements and degassing zones, to optimize for various WPC formulations (PE-based, PP-based, or PVC-based). Backed by 20+ years of extrusion experience, our systems are fully customizable to your extruder model and production requirements.
Technical Date
|
Parameter |
Description |
|
Screw / Barrel Base Material |
- 38CrMoAlA (SACM645) |
|
Alloy Sleeve (Bimetallic Barrel) |
- 4Cr5MoSiV1 (SKD61, H13) |
|
Surface Roughness |
Ra 0.4 μm |
|
Linearity (Straightness) |
0.015 mm/m |
|
Nitrided Hardness |
HV 900-1100 |
|
Nitrided Depth |
0.5 – 0.8 mm |
|
Size |
35/75,45/100,50/105,55/110,55/120,58/124,60/125,65/120,65/132,68/147,70/135,70/140,75/150,80/143,80/156,92/188,95/191,105/191,100/200,110/220,115/233,135/270 |
Reasons to Choose Zhongyang Screw for Your Project
20+ Years of Manufacturing Expertise
With over two decades of experience in screw and barrel production, we have accumulated deep technical knowledge in extrusion and injection molding processes. Our long-standing presence in the industry ensures that every component we deliver is backed by proven engineering practices and continuous improvement.
ISO9001 & CE Certified Quality Assurance
All our screws and barrels are manufactured under strict ISO9001 quality management systems, and key products carry CE certification. From raw material inspection to final dimensional testing, every step is documented and controlled, giving you reliable, repeatable quality for your production lines.
Full Customization Capability (OEM & ODM)
We understand that each extruder or injection molding machine has unique requirements. We offer complete customization – including screw geometry, compression ratio, barrel materials (nitrided, bimetallic, or PTA-coated), and flange configurations – to perfectly match your existing equipment and specific application needs.
Competitive Pricing with Global After-Sales Support
By combining efficient manufacturing processes with direct factory pricing, we deliver high-quality components at competitive costs. We also provide responsive after-sales support, including technical consultation, installation guidance, and worldwide shipping, ensuring a smooth experience from order to operation.
Industry Applications
PVC Pipe Extrusion
Used in the production of rigid PVC pipes for water supply, drainage, irrigation, and electrical conduit applications. Our conical twin screw barrels provide gentle, low-shear plastication that prevents thermal degradation of sensitive PVC compounds, ensuring smooth pipe surfaces, consistent wall thickness, and high output efficiency.
WPC Profile Extrusion
Applied in manufacturing wood-plastic composite (WPC) decking, fencing, railing, and window profiles. Our bimetallic screw and barrel assemblies offer exceptional abrasion resistance against wood fibers and mineral fillers, delivering homogeneous melt quality, reduced downtime, and extended component service life.
Sheet & Foam Board Extrusion
Commonly used in the production of PVC sheet, foam board (e.g., Celuka or free-foam), and rigid film. Our conical twin screw systems ensure uniform melt temperature and consistent thickness control, delivering smooth surface finish and dimensional stability for construction signage, interior decoration panels, and packaging sheets.
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