One-step technology: cascading WPC extrusion line for making outdoor PE/PP WPC profiles without preliminary pelletizing.
No preliminary pelletizing required - you save on initial investments, power costs, shop area, salaries as you avoid using separate pelletizer line.
Hot melt aggregates are forwarded directly (without passing a die) to WPC profile extruder reducing screw and barrel wear and tear while providing for better WPC profile quality (polymer is melted only once).
No additional wood fiber drying allows you to save on costs and shop area.
Co-rotating twin-screw extruder proved to provide the best mixing of WPC blend while venting out excessive moisture through the barrel vents.
Wood powder with moisture content up to 8% can be used without additional drying.