The materials used to produce wood plastic composite lumber include thermoplastic resins, most notably, low and high density polyethylene, polypropylene and polyvinyl chloride.

The polymers utilized typically need to have melting temperature that is below the thermal decomposition of wood (~225 degrees C).

These thermoplastics can come from both virgin and recycled sources. 

The wood used to manufacture these composites is mostly in the form of wood flour (typically 40 mesh or lower) or recycled paper fiber. Wood contents typically range from 20 to 60% in these composites.

Additives to the composites will include processing aids (lubricants, antioxidants, acid scavengers), and property enhancers (biocides, coupling agents, inorganic fillers, fire retardants, UV stabilizers, colorants, etc).

As we are the leading manufacturer in plastic recycling machineries, we are sensitive to the wood plastic composite products market which is a trend application for waste plastic and waste wood.

In 2000, we cooperated with Canada Future Soft Co., to research and develop the WPC products processing machineries.

For years of research and experiments, we have succeeded in developing a whole line for WPC products processing machineries.

We can supply the following solutions when you want to build a WPC plant

        Wood treatment system

This system includes wood grinding system and wood drying system. The demand of wood particle is around 40 meshes; moisture content is below 1% before feeding into the extrusion line

        Waste plastic recycling system

We talked this lot in the recycling machinery, LDPE film recycling and HDPE bottle recycling

        Mixing of wood, plastic and additives

An intensive mixing unit will be used here to get a fine mixture of wood, plastic and additives.

        Extrusion line

²       Two-step production line

Pelletizing line

A parallel twin-screw will be used to make pellets of wood, plastic and additives as well get a high quality of mixture of them

Extrusion line

A conical twin screw extruder will be adopted to produce WPC products for its excellent function of mixing and low shear in case of decomposition of wood.

²       One step production line

Unit of a hot melt single screw extruder and a conical twin screw extruder

This unit can be applied to make some special WPC products

In this method, after mixing the wood, plastic and additive, the can be fed directly into this unit to make the final products

More details, contact me freely, we can supply you the best solutions