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:
Nov. 06, 2001
Filed:
Jun. 16, 2000
Yoko Iwaisaki, Tsuchiura, JP;
Isamu Moriguchi, Tsuchiura, JP;
Makoto Sato, Kyoto, JP;
Keitaro Onishi, Otsu, JP;
Toray Industries, Inc., Tokyo, JP;
Abstract
An object of the invention is to provide a plastic film that is inapt to cause winding deviation, wrinkling and blocking even under a high-speed running condition. The invention provides a plastic film wherein at least 1,000 positive electrified patterns and at least 1,000 negatively electrified patterns each having an area of at most 10 mm,and an arbitrary shape are distributed per 100 cm,of the film, and a polypropylene film wherein the static friction coefficient &mgr;,between one surface of the film and another surface of the film is at least 0.2, and the dynamic friction coefficient &mgr;,therebetween is at least 0.08.