Injection molding unit for long fiber-reinforced thermoplastic r

Details Injection molding unit for long fiber-reinforced thermoplastic r Injection molding unit for long fiber-reinforced thermoplastic r

1995-10-10

1998-06-30

Davis, Robert

Plastic article or earthenware shaping or treating: apparatus

With separate and distinct upstream agitating or kneading means

Within pressurizing chamber

4253823, 4253824, 425557, 425558, 425559, B29C 4554

Patent

active

057730423

ABSTRACT:
An injection molding process for forming high strength, long fiber-reinforced thermoplastic resin, and for holding damage to the pellet-shaped thermoplastic resin to a minimum even when being plasticized, and maintaining the fiber length of pellet-shaped fiber bundles while unwinding the fibers and melting the resin. After the long fiber-reinforced thermoplastic resin has been heated and melted, pressure is applied to unwind the long fiber-reinforced thermoplastic resin while melted, and injection molding then performed.

REFERENCES:
patent: 3296353 (1967-01-01), Nouel
patent: 3470584 (1969-10-01), Iwata et al.
patent: 4082488 (1978-04-01), Brinkschroder et al.
patent: 4797245 (1989-01-01), Sonoda
patent: 4842507 (1989-06-01), Kawaguchi et al.
patent: 5123833 (1992-06-01), Parker

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