Plastic Wood Composite Profile Process
Wood Plastic Composite (WPC) is a high-performance material combining thermoplastic resins — such as PE, PP, PVC, or PET — with natural wood fiber or wood flour. The result is a durable, weather-resistant profile used in decking, wall panels, door frames, fencing, and outdoor furniture.
At Hao Yu Precision Machinery, we have designed and supplied complete WPC production lines since 1980. Our turnkey solutions cover every stage of the manufacturing process — from raw material blending to finished WPC profile extrusion — engineered for consistent output, energy efficiency, and long-term reliability.
Wood Plastic Composite (WPC) Manufacturing Process
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Plastic Wood Composite Profile
Detailed WPC Manufacturing Process
01
High Speed Mixer Machine
This working platform is designed for high-speed mixing the PVC powder with chemical additives & wood flour, by high-speed mixing process which ensure the raw materials are proper mixing (Coating) and combined in a high-speed mixer at working temperatures between 100–130°C. The intensive mixing ensures homogeneous dispersion of all materials, which is critical for consistent WPC product quality.
02
Vertical Type Cooling Blender Machine
The hot compound from the high-speed mixer is transferred to a vertical cooling blender, which rapidly reduces the material temperature to below 45~60°C. Controlled cooling prevents premature agglomeration and prepares the compound for pelletizing.
03
Pelletizer Extrusion Line
The WPC compound is fed into a pelletizer, where it is extruded and cut into uniform granules (WPC resin pellets) and by multiple air-cooling stages before storage at the raw material storage silo.
Consistent pellet size ensures stable feeding in the downstream profile extrusion stage and improves final product density and surface finish.
04
WPC Resin
The output of the pelletizing stage is WPC resin — a standardized intermediate material ready for profile extrusion / injection molding. WPC resin can also be stored and transported, offering manufacturers flexibility in production scheduling.
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WPC Profile Extrusion Plant
WPC resin pellets are fed into a twin-screw or single-screw extruder, melted, and forced through a precision-engineered die to form the desired profile shape — such as decking boards, wall cladding, or window frames. The profile is then calibrated, cooled in a water tank, and cut to length.
The benefit of working with twin-screws extruder is to gain massive production and idea design for making extra-large size WPC profile / WPC panel.
The befit of working with single-screw extruder is to gain wood like WPC profile / WPC panel, but the products is idea for medium-small size.
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Finished Plastic Wood Composite Profile
The final WPC profiles are dimensionally stable, UV-resistant, and ready for downstream finishing processes such as embossing, sanding, or painting. Common end products include outdoor decking, garden fencing, floor panel, interior wall panels, celling panel, decorative strips, and door/windows frames, etc…
Why Choose Hao Yu for Your WPC Production Line?
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40+ Years of Machinery Expertise
Established in 1980, Hao Yu has delivered WPC production lines since 2000 to manufacturers across Asia, the Middle East, Europe, and Latin America.
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Turnkey Solutions
We supply the complete production line: from raw materials selection, high speed mixer, cooling blender, pelletizer, profile extruder, auxiliary equipment and know-how recommendation for the work field regarding the WPC profile/products installation manner.
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Custom Engineering
Our machines are configurable to your target WPC profile dimensions, output capacity, and resin formulation requirements.
4
Global After-Sales Support
Our engineering team provides installation, commissioning, and on-site training wherever you are.
Q:
What raw materials are used in WPC manufacturing?
A:
WPC is typically made from wood flour (25–40%) combined with thermoplastic resin (PE, PP, or PVC), plus additives including CaCo3, talc, lubricants, UV stabilizers, coupling agents, and colorants. The exact ratio depends on the target product's mechanical and aesthetic requirements.
Q:
What machines are required for a WPC production line?
A:
A complete WPC production line requires: (1) High Speed Mixer, (2) Cooling Blender, (3) Pelletizer Extrusion Line, (4) WPC Profile Extrusion Plant. Auxiliary equipment includes calibration tables, haul-off units, cutting saws and (5) downstream auxiliary such as sanding machine, surface embossing, laboratory equipment, etc...
Q:
How does a high-speed mixer improve WPC product quality?
A:
The high-speed mixer ensures all ingredients are thoroughly and uniformly blended (Coated by the chemical additives) at the correct temperature. Proper dispersion of wood fiber and resin prevents weak spots, surface defects, and inconsistency prior extruding the WPC profiles/products.
Q:
What WPC profiles can be produced with Hao Yu's extrusion line?
A:
Hao Yu's WPC profile extrusion lines can produce decking boards, wall cladding panels, window and door frames, garden fencing, pergola beams, and custom hollow or solid profiles, depending on the die configuration.
Q:
How do I get a quote for a WPC production line?
A:
Contact Hao Yu Precision Machinery Industry Co., Ltd. with your target profile detail dimensions, required output capacity (kg/hr), and material specifications. Our engineering team will recommend the appropriate production line configuration and provide a detailed quotation.
