Mixing of filamentary reinforcing material with thermoplastic resins

摘要: Filamentary material is incorporated in a synthetic resin, natural rubber or by heat-plastifying the polymeric material, restraining within vessel adapted to pump forward and agitate fluid therein, e.g. screw extruder, continuously adding stream of chopped filamentary reinforcing agitated heat-plastified removing product from at location remote point addition material. Polymeric materials specified are polyvinyl chloride, vinylidene chloride copolymers, polyethylene, polypropylene, ethyl cellulose, cellulose acetate, nylon, polycarbonates, polybutadiene, polyisoprene, copolymers styrene with methyl methacrylate acrylonitrile, polybutadiene - reinforced polystyrene, blend styrene-acrylonitrile copolymer chlorinated rubber. Glass fibre as 10-50% fibres length 50.8 mm. less may be polymer viscosity 300-106 poise. In extruder 10, resin supplied inlet 14 33 arrive via rollers 35, comminuter 32 21. Volatile escape The fitted heaters 17. 29 cooled made particles. another embodiment has twin-screws.