Abstract: The present invention is directed to a device for the production of a cellular wood plastic composite material comprised of an orifice that conducts the composite material from the adapter of the extruder to the transition die plate in such a manner that a uniform flow of material reaches the transition die plate; a transition die plate that further directs the flow of material to a flow restriction die plate in a manner ensuring that equal amounts of material are delivered to all areas of the flow restriction die plate; a flow restriction die plate that provides sufficient resistance to material flow to increase the melt pressure of the portion of the material that is upstream in relation to the flow restriction die plate and controls the temperature increase caused by this restriction by dividing the flow into numerous suitably sized and shaped streams; a compression die plate that fuses the separate streams issuing from the flow restriction die plate into a single stream of material and maintains the melt

Abstract: A low-pressure CO2 tank or an air compressor with a refrigerated air dryer is attached either at or after the vent zone of a standard twin-screw extruder. During or after extrusion, the gas is dissolved in the wood-plastic melt. The CO2 expands which foams the wood-plastic material.

Abstract: An extruded wood simulative material is described which includes a high degree of cellulosic material content and begins with powdered thermoplastic material.

Abstract: An apparatus and process for combining an organic fibrous material with a thermoplastic material forming a wood-imitating composite. The mixed material is extruded into a die system comprising a transition die, a stranding die and a molding die. The flow rate of the material through the die system is equalized by preforming the mixed material with the transition die to a shape approaching the end product, stranding the material with the stranding die to form individual strands, and compressing the individual strands with the molding die after it exits the stranding die. The die system may also include an adapter die positioned between the extruder and the transition die which functions to control the amount of mixed material which enters the die system. A product comprised of recyclables shredded and mixed to form a wood-imitating composite from a low-temperature extruder is also provided.