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. 17, 2000
Filed:
Nov. 17, 1997
Kazuhiko Kurihara, Itabashi-ku, JP;
Hiroshi Yazawa, Kunitachi, JP;
Shuichi Murakami, Itabashi-ku, JP;
Yoichi Mazawa, Yono, JP;
Yuki Kuroiwa, Shiki, JP;
Yukio Matsumura, Kawaguchi, JP;
Kazuhiro Yabe, Meguro-ku, JP;
Shin'ichi Umejima, Kawasaki, JP;
Nippon Petrochemical Company, Limited, Tokyo, JP;
Polymer Processing Research Inst., Ltd., Tokyo, JP;
Abstract
A longitudinally stretched nonwoven fabric and a method for producing the same, which nonwoven fabric is a web mainly composed of long fiber filaments of 3 .mu.m to 15 .mu.m in diameter and made by short distance stretching in one direction at a stretching ratio of at least 5, and which production method is characterized in the steps of: maintaining the spun filaments in a draftable state; cooling the filaments with a cooling fluid, then guiding the filaments onto a conveyer with inclining the flow of filaments toward the transferring direction, and sucking by a reduced pressure from the back side of said conveyer, and further subjecting the web of filaments to short distance stretching in the longitudinal direction.