Method for making a part of reinforced thermoplastic material, a

Details Method for making a part of reinforced thermoplastic material, a Method for making a part of reinforced thermoplastic material, a

1997-06-13

1999-07-27

Vargot, Mathieu D.

Vehicle fenders

Buffer or bumper type

Composite bumper

264154, 264163, 264257, 264325, 425112, B29C 4318, B60R 1903

Patent

active

059277785

ABSTRACT:
A device and method is provided for making a thermoplastic part reinforced by a reinforcing sheet on one of the faces of said part. The method includes using a mold having a main cavity that defines the general shape of the part and secondary cavities terminating at a wall of the main cavity and defining projections from one of the faces of the part; and placing in the open mold a reinforcing sheet comprised of a woven or bonded fabric of reinforcing fibers mixed with thermoplastic material, against said wall of the main cavity, the reinforcing sheet thus closing the openings of the secondary cavities. The method further includes introducing into the open mold a thermoplastic material, possibly containing fibers, into the main cavity of the mold on the side of the reinforcing sheet opposite the secondary cavities in a sufficient quantity to fill the main cavity and the secondary cavities; gradually closing the mold to cause the thermoplastic to flow and the main and secondary cavities to fill; and removing the part from the mold.

REFERENCES:
patent: 3078206 (1963-02-01), Skura
patent: 3196490 (1965-07-01), Erb
patent: 4415397 (1983-11-01), Wetzel
patent: 5034076 (1991-07-01), Masui et al.
patent: 5089206 (1992-02-01), Kia
patent: 5093067 (1992-03-01), Gibson
patent: 5290079 (1994-03-01), Syamal
patent: 5356588 (1994-10-01), Hara et al.
patent: 5520758 (1996-05-01), Kelman et al.
patent: 5672309 (1997-09-01), Masui et al.
patent: 5770134 (1998-06-01), Hara et al.

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