Method for making composite material

Plastic and nonmetallic article shaping or treating: processes – With measuring – testing – or inspecting – Controlling heat transfer with molding material

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Details

264118, 264119, 264122, 264108, 264174, 2641761, 26421112, 264349, 264237, 264348, B29C 4702, B29C 4792

Patent

active

050826050

ABSTRACT:
A method for making a composite material including a discontinuous phase of cellulosic fiber encapsulated in and bonded to a continuous phase of a polymeric component containing a major portion of polyethylene by mixing the cellulosic fiber and polymeric component while raising the temperature of the mixture to the encapsulation point, maintaining the encapsulated material within the encapsulation range while reducing the particle size, and thereafter extruding the material while controlling its temperature within the encapsulation range and substantially aligning the fibers in the flow direction until the material contacts a heated die.

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"Compounding Wood Fibers and Recycled High Density Polyethylene Using a Twin-Screw Extruder", Selke et al., Michigan State University (1988).
"Uses of Recycled Plastics in Composite Materials", Yam, Michigan State University (Date Unkown).

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