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:
Aug. 17, 1993
Filed:
Jan. 25, 1991
Applicant:
Inventors:
Werner Waldenrath, Cologne, DE;
Joachim Wank, Dormagen, DE;
Wolfgang Lamaack, Grevenbroich, DE;
Dietmar Benner, Lohmar, DE;
Friedrich Johannaber, Lohmar, DE;
Karl-Heinz Julicher, Cologne, DE;
Assignee:
Bayer Aktiengesellschaft, , DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B29C / ;
U.S. Cl.
CPC ...
264510 ; 264 85 ; 425112 ;
Abstract
The production of multi-layer mouldings (17) from a sheet (6) injection-moulded behind with a resin can be simplified by the sheet (6) being deformed in an injection mould by means of a fluid pressure medium, in particular nitrogen, at at least 20 bar and the deformed sheet (6) injection-moulded behind with resin directly thereafter in this injection mould, a pressure keeping the deformed sheet (6) in position being maintained during the injection-moulding behind.