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:
May. 28, 2002
Filed:
Sep. 27, 2000
Kentaro Niijima, Chiba, JP;
Shinji Nakata, Chiba, JP;
Yasuhiro Shiraishi, Chiba, JP;
Takanori Nakashima, Chiba, JP;
Chisso Corporation, Osaka, JP;
Abstract
A breathing film comprising at least one layer obtained by processing a propylene resin composition including crystalline propylene polymer(A) and propylene/&agr;-olefin random copolymer(B) is provided, said film having anti-bacterial agent, and the ratio [&eegr;] /[&eegr;] of intrinsic viscosity [&eegr;] of propylene/&agr;-olefin random copolymer(B) and intrinsic viscosity [&eegr;] of crystalline propylene polymer(A) being 0.3 to 1.2, and said film having specified range of water vapor permeability, oxygen gas permeability and ethylene gas permeability.