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:
Apr. 14, 1981
Filed:
Jan. 15, 1979
Applicant:
Inventor:
Rolf Tschudin, Munchenstein, CH;
Assignee:
Irbit Holding AG, Fribourg, CH;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B32B / ; B29C / ;
U.S. Cl.
CPC ...
156183 ; 156224 ; 156245 ; 264512 ; 264547 ; 264554 ;
Abstract
A method of deep drawing of foam material mold parts made of flat foamed plates, by which the plate which is clamped in a frame is heated on both sides and is sucked against the upper side of a core piece which moves into the plane of the frame, the upper side corresponding to the profile of the mold. The suction takes place with an intermediate placement of a foil, the latter being adhesive material--repelling at least on its interior side. The foil is fastened to the foam material plate by means of a self-adhesive layer.