Plastic and nonmetallic article shaping or treating: processes – Mechanical shaping or molding to form or reform shaped article – To produce composite – plural part or multilayered article
Patent
1991-10-21
1994-01-25
Kuhns, Allan R.
Plastic and nonmetallic article shaping or treating: processes
Mechanical shaping or molding to form or reform shaped article
To produce composite, plural part or multilayered article
425812, B29C 4320
Patent
active
052813835
ABSTRACT:
In a method and device for combining a resin core member and a surface skin member at the same time as molding the resin core member into a desired shape, air and reaction gas trapped in the die cavity is removed through air vent pieces embedded in the die surfaces of the upper and lower dies so that a laminated molded article with a favorable appearance free from creases can be obtained. The air vent pieces may be either porous or provided with minute slits so that air and gas may be removed but the resin material may not seep through.
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patent: 4952358 (1990-08-01), Okina et al.
Sakai Tetsuo
Ueki Katsuji
Kasai Kogyo Co. Ltd.
Kuhns Allan R.
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