Wood Plastic Composite Wpc Profile Board Extruder Machine

1. Plastic raw material: Because 200 ° C is the upper limit of the processing temperature of wood-plastic composite materials, some resins with melting points exceeding 200C, such as PET, cannot be used in wood-plastic composite materials.so generally we use PP, PE, PVC or ABS for WPC production

2. Moisture of material: Water vapor can degrade the properties of the composite and also help to breed microorganisms, so it must be removed before using wood fillers. The wood filler is dried before processing. Generally, the moisture content after the treatment is less than 1 ~ 2%.

3. Chemical additives: Appropriate additives are needed to modify the surface of the polymer and wood flour to increase the interfacial affinity between wood flour and resin.

4. Percentage of wood powder
High-filled wood flour has poor dispersion effect in molten thermoplastics, making the melt fluid poor, and extrusion molding processing difficult. so we use max.70% wood content for PP PE WPC Products, and max.50% Wood content for PVC WPC products. the wood content will be reduced because of foaming technology required for PVC WPC foam board