A die system and process for manufacturing the composite material having cellulosic fibrous-polymer composition

摘要

A die system (14) for extruding a cellular, foamed extrudate from an extruder (12) is disclosed. The die system comprises an adapter die plate (20), at least one transition die plate (30), a flow restriction die plate (60), a compression die plate (70) and a shaping die plate (80) and each of them have a front opening, a rear opening and a flow channel to allow the flow of extrudate. The flow channel of flow restriction die plate (60) includes plurality of stranding channels that divides the flow of extrudate. The particular diameter and length of the stranding channel provides the resistance pressure to the extrudate flow that is sufficient to increase the resistance pressure of the extrudate entering the adapter die plate (20).