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:
Oct. 06, 1998
Filed:
Nov. 22, 1996
Applicant:
Inventors:
Assignee:
Hoechst Trespaphan GmbH, , DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B32B / ;
U.S. Cl.
CPC ...
428336 ; 428515 ; 428516 ;
Abstract
A polyolefinic multilayer film comprises at least three layers BIT, wherein B is a polyolefinic base layer, I is an intermediate layer, and T is a top layer applied to the intermediate layer I. The intermediate layer I comprises at least 75% by weight, based on the weight of the intermediate layer I, of heat sealable polyolefins. The top layer T comprises at least 75% by weight, based on the weight of the top layer T, of heat sealable polyolefins. The minimum sealing temperature of the polyolefin of top layer T is at least 100.degree. C. and is greater than the minimum sealing temperature of the polyolefin of the intermediate layer I. The thickness of the top layer T is less than 0.4 .mu.m.