Plastic and nonmetallic article shaping or treating: processes – Mechanical shaping or molding to form or reform shaped article – Separately introducing reacting materials into mold
Patent
1998-07-13
2000-12-12
Dixon, Merrick
Plastic and nonmetallic article shaping or treating: processes
Mechanical shaping or molding to form or reform shaped article
Separately introducing reacting materials into mold
26421122, 26421123, 156181, B29C 5300
Patent
active
061594083
ABSTRACT:
A disclosed process for producing a molded article made of fiber-reinforced thermoplastic material includes providing a molding machine containing a plasticizing apparatus having an opening for receiving raw materials, an apparatus for feeding the raw materials to the plasticizing apparatus and a molding apparatus having a cavity; feeding both thermoplastic material in a solid state and reinforcing fibers with a length from about 3 mm to about 50 mm simultaneously into the plasticizing apparatus through the opening from the feeding apparatus; melting the thermoplastic material and kneading the thermoplastic material and the reinforcing fibers in the plasticizing apparatus to produce kneaded material comprising the thermoplastic material and the reinforcing fibers; supplying the kneaded material to the molding apparatus from the plasticizing apparatus; and molding the kneaded material into the molded article in the cavity is provided. Also, a molded article made of the fiber-reinforced thermoplastic material which is obtained by the above process and contains the reinforcing fibers with a weight average length of about 2 mm or more is provided.
REFERENCES:
patent: 4549920 (1985-10-01), Cogswell et al.
patent: 4559262 (1985-12-01), Cogswell et al.
patent: 5019450 (1991-05-01), Cogswell et al.
patent: 5213889 (1993-05-01), Cogswell et al.
Kitayama Takeo
Matsubara Shigeyoshi
Dixon Merrick
Sumitomo Chemical Company Ltd.
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