Extruder apparatus and process for compounding thermoplastic...

Details Extruder apparatus and process for compounding thermoplastic... Extruder apparatus and process for compounding thermoplastic...

B - Operations, Transporting

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B29C 47/64 (2006.01) B29B 11/16 (2006.01) B29C 47/10 (2006.01) B29C 47/36 (2006.01) B29C 47/44 (2006.01) B29C 47/50 (2006.01)

Patent

CA 2024337

Multiple extruder apparatus for compounding thermoplastic resin and reinforcing fibers incorporates a resin extruder in which thermoplastic resin pellets are melted and a compounding extruder in which the molten thermoplastic resin is mixed in intimate contact with long reinforcing fibers of at least one inch in length. The melted thermoplastic resin is introduced into the compounding extruder at a point downstream of the inlet point for the reinforcing fibers, so that the fibers are mechanically worked and heated before coming into contact with heated, molten thermoplastic resin. The extrudate from the compounding extruder consists of a homogeneous, molten mass of thermoplastic resin having discrete lengths of fibers randomly dispersed therein.

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