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The profiles produced by the PE wood-plastic profile production line have the advantages of fireproof, waterproof, moisture-proof, moth-proof, mildew-proof and environmental protection. They also have good processing performance, which can be sawed, nailed and planed, and the nail-holding force is better than that of ordinary wood materials.
Application fields:
• Outdoor Use: WPC decking (parks, boardwalks), railings (residential complexes, scenic areas), planters.
• Indoor Use: Wall panels (home/office decor), skirting boards, furniture boards.
• Industrial Use: Construction formwork, pallets, municipal barriers.
Production Process of PE Wood Plastic Profile Production Line
1. Raw Material Preparation & Mixing
Raw materials: PE granules, wood powder (or other plant fibers like rice husk, straw), coupling agents (to enhance bonding between PE and wood fibers), lubricants, colorants, and additives (e.g., anti-UV, flame retardants).
Mixing process: All materials are weighed accurately according to specific formulas and then mixed in a high-speed mixer. The mixing process generates friction heat, which preheats the materials, removes moisture from wood fibers, and ensures even dispersion of additives.
2. Extrusion (Plasticization & Shaping)
The well-mixed material is fed into a twin-screw extruder (commonly a conical twin-screw design, ideal for high-fiber content mixtures).
Inside the extruder, the material undergoes intense shearing, melting, and plasticization as it moves along the screw. The screw and barrel are specially designed to minimize damage to wood fibers while achieving full fusion of PE and fibers.
3. Mold
The molten composite material is pushed through a custom-designed die (shaped to the desired profile, e.g., decking, wall panels, or fencing) to form the initial shape.
4. Surface treatment
Online embossing, sanding, or painting to enhance texture (e.g., wood grain patterns for decking).
5. Calibration & Cooling
The extruded profile exits the die in a semi-molten state and is immediately guided into a vacuum calibration table.
Vacuum calibration: Negative pressure in the table tightly adheres the profile to the calibration mold, ensuring precise dimensional accuracy (e.g., thickness, width) and surface smoothness.
Cooling: The calibrated profile then passes through a water cooling tank, where cold water rapidly solidifies the material, maintaining its shape and structural stability.
6. Hauling & Cutting
A haul-off machine (equipped with rubber belts or rollers) pulls the cooled profile at a constant speed, matching the extrusion rate to prevent stretching or deformation.
The profile is then fed into a cutting machine, which trims it to the required length (e.g., 2m, 4m) using precision blades.
This streamlined process ensures high efficiency, consistent product quality, and adaptability to various PE wood plastic profiles, making it suitable for large-scale industrial production.
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