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:
May. 16, 1989
Filed:
Apr. 03, 1987
Applicant:
Inventors:
Ingo Schinkel, Walsrode, DE;
Rudi Klein, Walsrode, DE;
Assignee:
Wolff Walsrode Aktiengessellschaft, Walsrode, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B32B / ;
U.S. Cl.
CPC ...
428349 ; 428353 ; 4284244 ; 428910 ;
Abstract
Heat-sealable composite films, stretched at least uniaxially, comprising a base layer, of a propylene polymer, which is provided on at least one of its surfaces with an adhesion promoter layer and a heat-sealable layer of a thermoplastic polyurethane elastomer.