Wood-plastic sheathing board material is a new type of composite material that has been booming in recent years at home and abroad. It refers to the use of polyethylene, polypropylene and polyvinyl chloride, instead of the usual resin adhesive, with over 50% wood flour, rice husk, Straw and other waste plant fibers mixed into a new wood material, and then by extrusion, molding, injection molding and other plastic processing technology to produce the plate or profile. Mainly used in building materials, furniture, logistics and packaging industries. The plastic and wood flour according to a certain percentage of mixed by hot extrusion sheet, called the extrusion WPC coated sheet.
With the R & D of wood-plastic panels, the production of plastic sheet raw materials, in addition to high-density polyethylene or polypropylene, there are polyvinyl chloride and PS. Process from the earliest single-screw extruder into the second-generation conical twin-screw extruder, and then by the parallel twin-screw extruder pelletizing, and then tapered screw extrusion molding, can make it difficult to plasticize , Aging resistance is poor, creep resistance is poor, the color consistency and durability of the poor and tensile strength, etc. After years of research and development in our country, there are some enterprises, manufactured by the WPC material can meet the international standards. And a large number of exports abroad.