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:
Feb. 24, 1981
Filed:
Jan. 31, 1979
Applicant:
Inventors:
Robert C Lansbury, St. Albans, GB;
Thomas G Heggs, Welwyn, GB;
Assignee:
Imperial Chemical Industries Limited, London, GB;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B32B / ; B32B / ;
U.S. Cl.
CPC ...
428336 ; 428334 ; 428347 ; 428349 ; 428500 ; 428516 ;
Abstract
A multiple-layer film having a substrate layer of high density polyethylene or a propylene homo- or co-polymer, and, on at least one surface of the substrate, a heat-sealable layer of a propylene co-polymer containing from 80 to 95% of propylene, the balance being a C.sub.4 to C.sub.10 olefin. The substrate and surface layers exhibit a monoclinic crystalline structure.