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
1997-08-11
2000-08-15
Silbaugh, Jan H.
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
264327, 2643288, 26432814, 26432816, B29C 3500, B29C 4516
Patent
active
061031674
ABSTRACT:
A sandwich molded article comprising a thick skin or outer layer, a thin skin or outer layer, and a core layer surrounded by these skins or outer layers. A process for producing said sandwich molded article by the use of a mold(s) which comprises adjusting the temperature of an inner surface of the mold corresponding to a skin portion of the molding desired to be made thick, to a temperature lower than that of an inner surface of the mold corresponding to a skin portion of the molding desired to be made thin; injecting a skin material in a softened state into the mold; and then injecting a core layer material in a softened state into the skin material. According to the present invention, there can be obtained a sandwich molded article having a core layer from which the distances to the obverse and the reverse of the molded article are different. This molded article can be given a satisfactory decorative surface and has deformation-preventing ability.
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Inada Yoshihiro
Mukai Hiroshi
Narukawa Hirohisa
Teramoto Yasunobu
McDowell Suzanne E.
Silbaugh Jan H.
Toyoda Gosei Co,., Ltd.
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