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. 17, 1987
Filed:
Nov. 23, 1984
Applicant:
Inventors:
Masakatsu Kimura, Sodegaura, JP;
Osamu Nakamura, Sodegaura, JP;
Assignee:
Idemitsu Petrochemical Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B32B / ; B29D / ; B65D / ;
U.S. Cl.
CPC ...
428 36 ; 428516 ; 2641761 ;
Abstract
A coextrusion multi-layer tubular film comprising: an outer layer comprises a linear ethylene .alpha.-olefin copolymer having a density of from 0.900 to 0.945 gram per cubic centimeter; and an inner layer made of (i) a polypropylene-based resin or (ii) a resin composition comprising from 60 to 98% by weight of a polypropylene-base resin and from 40 to 2% of an ethylene .alpha.-olefin copolymer having a density of from 0.850 to 0.945 gram per cubic centimeter; the ratio of said outer layer to said inner layer being from 50:50 to 97:3.