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:
Sep. 15, 1992
Filed:
Nov. 30, 1990
Applicant:
Inventors:
Robert C Lansbury, Hertfordshire, GB;
Douglas L Mitchell, Hertfordshire, GB;
Assignee:
Imperial Chemical Industries PLC, London, GB;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B65D / ; B29D / ; B32B / ;
U.S. Cl.
CPC ...
428 364 ; 428327 ; 428332 ; 428349 ; 428516 ; 428910 ;
Abstract
A multiple-layer film comprises an oriented propylene polymer substrate with a heat-sealable layer comprising an ethylene polymer of density not exceeding 0.95 g cm.sup.-3 and containing a spherical, non-agglomerating additive of particle size not exceeding 5.0 .mu.m. Such films offer improved blocking- and abrasion-resistance, and are of utility in high-speed packaging operations.