WPC Co extrusion Machine

As a professional manufacturer of WPC machinery with continuous innovation and technological upgrading, Yongte strongly recommends WPC manufacturers to equip WPC co-extrusion machine to make high quality WPC products.

Yongte advanced WPC co extrusion machine ntegrates high output, energy efficiency, and reliability, empowering the creation of premium, long-lasting weatherproof WPC products from recycled materials. The machine efficiently melts and plasticizes wood-plastic granules (or fragments) using a conical twin-screw extruder, and a single screw extruder for the modified PE granules, before extruding them into a specialized co-extrusion mold to form the required size and shape. The design, featuring a barrel diameter that decreases from large to small, ensures not only the mixing effect of the material but also a stable melt pressure within the mold cavity, compressing the wood-plastic material (achieving a final product density of 1.3 g/cm³) to ensure the strength of the final product. Additionally, the machine is equipped with a high-speed cooling and calibration table, a stable traction system, and automatic cutting equipment. The line can produce various WPC products by changing the mold.

Yongte WPC Co-Extrusion Machine addresses the limitations of insufficient weather resistance and uneven color caused by using recycled materials. By co-extruding a layer of high-quality modified PE onto the surface of the WPC core, we can create wood-plastic products with custom wood grain colors, which can withstand outdoor use for over 10 years.

Technical Parameter of WPC Co extrusion Machine

Process and Structural Innovation Of WPC Co-extrusion Machine

The co-extrusion process enables synchronized extrusion of multi-layer materials, forming a "sandwich" structure—comprising a wear-resistant surface layer, a tough intermediate structural layer, and a moisture-proof base layer. Each layer achieves high interfacial bonding strength (e.g., 1.2MPa), ensuring stable overall performance. Compared to traditional single-material pressing, co-extruded wood-plastic flooring represents a qualitative leap in outdoor durability, stability, and aesthetic appeal, making it the ideal choice for outdoor flooring applications.

Optional WPC co-extrusion color 

Product details of WPC Co extrusion Line

1. Automatic Feeder:	The main extruder is equipped with a screw feeder, while the co-extruder features a vacuum suction feeder.
2. SJSZ65/132 Conical Twin Screw Extruder:	Equipped with a servo motor to save 15-20% power, a vertical gearbox for stable and powerful production, a bimetallic screw and SKD barrel for long-term use, and an automatic temperature control system
3. SJ35 Co-extruder:	Equipped with a drying hopper and automatic system, featuring a specially designed screw shape to ensure the melting and uniform material flow.
4. Co-extrusion Mold:	Made of high-quality 3Cr17 mold steel, featuring a rational co-extrusion die cavity and core layer die cavity flow design, precise zoned temperature control, a modular design for stable shaping dimensions, and quick-positioning pins for easy installation.
5. Online 3D Embossing Equipment:	To enhance the wood grain appearance and anti-slip effect of Wood Plastic Composite, we have equipped an online 3D deep embossing machine. This equipment can be installed on the calibration table of the WPC extrusion line to create a more realistic wood grain effect. The embossing roller is interchangeable to produce various wooden textures.
6. Calibration and Cooling Table:	Made from a single sheet of 304 stainless steel with a reasonable pipe design, it features overall electric lifting and left-right adjustment, and a water system along its entire length. It is suitable for rapid cooling systems, easy to install and maintain, and the water tank is equipped with a filter to prevent contamination.
7. Traction Machine:	High-quality rubber ensures durability, the tire tread surface guarantees traction friction, dual-stage reduction provides sufficient traction torque, and the bird-wing protective cover simplifies operation and maintenance.
8. Cutting Machine:	Equipped with automatic fixed-length cutting, a 304 stainless steel panel, a fully enclosed dust collection system to reduce dust pollution, a servo motor, and special material cutting blades for high-speed cutting to avoid chipping.
9. Electric Control System:	Equipped with an ABB inverter, Omron temperature controller, Siemens contractor, and a PLC control system is optional. All contactors and wires in our electrical cabinets are neatly arranged, with wire numbers clearly labeled according to a set pattern. Sufficient clearance between components allows for easy operation by electricians. All auxiliary wiring uses quick-connect plugs (eliminating the need for customer wiring), ensuring convenience and safety.
10. Product Stacker:	6-meter automatic stacker.

Core performance advantage of WPC co-extrusion products

The core performance advantage of co-extruded wood-plastic outdoor flooring lies in its composite structure formed by synchronous extrusion of multiple layers. The key innovation is the application of a high-density, wear-resistant, and weather-resistant co-extruded surface layer over the wood-plastic substrate, achieving comprehensive upgrades in performance, durability, maintenance, and environmental sustainability, making it ideal for complex outdoor environments.

1. Weather resistance and anti-aging: The co-extruded surface layer (e.g., ASA) exhibits high UV resistance and fading resistance, with a fading rate of ≤5% after 1000 hours of UV aging test. Some products maintain a grade 4 or higher appearance even after 10000 hours of testing, with an outdoor service life of 15-60 years. The dimensional change rate under thermal cycling (82°C to-40°C) is ≤0.3%, effectively preventing warping and deformation.

2. Waterproof, moisture-resistant, and mold-proof: The 360° co-extruded coating layer with near-zero water absorption completely blocks moisture penetration, preventing mold growth, rot, and cracking. Ideal for humid environments like coastal areas and swimming pools.

3. Wear-resistant and scratch-resistant: The surface hardness reaches 82HDB, offering 4-5 times greater wear resistance than standard wood-plastic composites. It withstands daily foot traffic, heavy object pressure, and friction, reducing scratches and maintenance costs.

4. Stability and Mechanical Properties: The multi-layer composite structure achieves a dimensional variation rate of ≤0.1%, exhibits minimal bending performance fluctuations, and outperforms traditional outdoor building materials in load-bearing capacity. It meets B1 fire resistance rating, self-extinguishes when removed from flame, and emits no toxic gases.

5. Insect-resistant and termite-proof: The wood fibers are coated with functional plastics, which repel insects such as termites and wood-boring insects, thereby preventing damage and extending the service life.

Cost and Application Value WPC co-extrusion products

1. Low maintenance costs: No paint or renovation required, just regular water rinsing, significantly reducing long-term maintenance expenses.

2. Economical installation and transportation: The hollow co-extruded structure is lightweight, reducing transportation and installation costs, making it suitable for large commercial projects.

3. Appearance and Environmental Protection: It can mimic natural wood grain and be formulated in various colors to approximate the texture of raw wood. Made from recycled plastic and wood fiber, it has a formaldehyde emission level ≤0.1mg/L, with environmental protection indicators surpassing those of traditional materials.

Global WPC Project Cases

For instance, in a previous project for a Canadian customer, we provided a turnkey co-extrusion system that utilized recycled plastic and PCB recycled fiberglass for the core WPC layer, paired with weather-resistant material for the surface layer. Similarly, in our WPC production project for an Indian client, the customer employed road waste mixed with various colored plastics for the core layer, complemented by an anti-aging co-extruded surface layer featuring custom colors. Additionally, our Romanian customer has adopted the co-extrusion system to replace traditional single-layer WPC, now offering products with over 10 years of warranty.

WPC complete plant to Canada for recycling waste fiberglass into WPC decking products

WPC Profile Machine working in Romania for making WPC decking/fence/pergola with turnkey project

WPC Production Solution for india customer to transform plastic road wastage into green building material