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:
Jul. 03, 1990
Filed:
Dec. 08, 1989
Applicant:
Inventors:
Aurelio Oreglia, Como, IT;
Mario Gillio-Tos, Nerviano, IT;
Assignee:
W. R. Grace & Co.-Conn., Duncan, SC (US);
Primary Examiner:
Int. Cl.
CPC ...
B32B / ;
U.S. Cl.
CPC ...
428518 ; 428522 ; 428 367 ;
Abstract
A packaging film is disclosed having both gas barrier and stretchability properties comprising at least one barrier layer made of polymers or copolymers with low gas permeability modified by the inclusion therein of 1 to 20% by weight of a stiffness modifying agent selected from plasticizers and elastomers, and at least one stretchable layer of olefin polymers or copolymers.