Plastic and nonmetallic article shaping or treating: processes – Direct application of fluid pressure differential to... – Producing multilayer work or article
Patent
1999-04-22
2000-08-08
Robinson, Ellis
Plastic and nonmetallic article shaping or treating: processes
Direct application of fluid pressure differential to...
Producing multilayer work or article
264523, 264528, 264529, 428 361, 428 364, 428 368, B29C 4514, B29C 4516, B29C 4532, B29C 4906, B29D 2200
Patent
active
060997893
ABSTRACT:
A molded article includes a hollow molded body formed of a base material and a heat insulating sheet member laminated to an outer surface of the hollow molded body. The base material is a blended material which contains about 50% by weight to about 90% by weight of a thermoplastic resin and about 10% by weight to about 50% by weight of an inorganic material, and has a flexural rigidity of at least about 1,350 MPa at 23.degree. C. and a flexural rigidity of at least about 550 MPa at 60.degree. C. A process for producing a molded article includes placing a heat insulating sheet member on a surface of a mold cavity of at least one mold half of separated mold halves, inserting a parison formed of a blended material having the above-described composition and flexural rigidity characteristics between the mold halves, clamping the mold halves, and introducing a pressurized fluid into the parison to inflate the parison in conformity with a shape of the mold cavity and bond the heat insulating sheet member thereto, to produce a molded article including a hollow molded body having a heat insulating sheet member laminated to an outer surface thereof.
REFERENCES:
patent: 4510105 (1985-04-01), Sherwood
patent: 5114767 (1992-05-01), Berns et al.
patent: 5529826 (1996-06-01), Tailor et al.
patent: 5635226 (1997-06-01), Koda et al.
patent: 5847041 (1998-12-01), Takemura et al.
Figueroa John J.
Kyoraku Co. Ltd.
Robinson Ellis
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