The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 08, 1998
Filed:
Sep. 10, 1996
Yoshio Sakaguchi, Wako, JP;
Toshiyuki Kurihara, Wako, JP;
Akira Kaburagi, Wako, JP;
Hideho Kubo, Chiba, JP;
Mituaki Sunada, Chiba, JP;
Honda Giken Kogyo Kabushiki Kaisha, Tokyo, JP;
K-Plasheet Coporation, Chiba, JP;
Abstract
A composite core is selected which is formed of a reinforcing fiber and a thermoplastic synthetic resin by a compression molding, and including a first region in which the grammage M.sub.1 is set in a range of 400 g/m.sub.2 .ltoreq.M.sub.1 .ltoreq.700 g/m.sup.2 to provide a reduction in weight, and a second region in which the grammage M.sub.2 is adjusted in a range of 900 g/m.sup.2 .ltoreq.M.sub.1 .ltoreq.1,200 g/m.sup.2 to provide an enhanced rigidity. At a first step, the composite core is heated, whereby it is expanded, and the thermoplastic synthetic resin is expanded. At a second step, a skin material is superposed onto the composite core. At a third step, the composite core is compressed, and the skin material is bonded to the composite core. In the laminate produced in the above manner, the first region contributes to a reduction in weight, and the second region contributes to an increase in rigidity. Further, because of a larger amount of second region expanded, the reinforcing fibers are stuck into the skin material. This contributes to an increase in bond strength. Thus, it is possible to produce a laminate which has a high bond strength of a surface skin material layer and a rigidity and moreover, is light in weight.