Patent ID: 7736562
Filing Date: 2010-06-15
Classification: B29C,B29K,Y10T

Abstract:
1. A production process for the continuous production of a composite profile comprising composite compound comprising thermoplastic resin and cellulosic fiber and having a desired cross-section and an exterior surface, said production process comprising the steps of: a. providing thermoplastic resin and cellulosic fiber; b. compounding the thermoplastic resin and cellulosic fiber to produce the composite compound; c. processing the composite compound at a temperature above the softening point temperature of the thermoplastic resin through an extrusion system to produce a generally homogeneous flow of melted composite compound; d. extruding the generally homogeneous flow of melted composite compound through a die assembly having a flow passage to form a composite profile having the desired cross-section, wherein extruding comprises maintaining the temperature of a portion of the die assembly containing the die land at a temperature below the melting point temperature of the thermoplastic resin; e. cooling the extruded composite profile until the composite compound comprising the composite profile is solidified; and f. cutting the cooled composite profile to the desired length.