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. 10, 2015
Filed:
Dec. 06, 2010
Applicants:
Yohei Nakano, Otsu, JP;
Yoshikazu Yakake, Otsu, JP;
Inventors:
Yohei Nakano, Otsu, JP;
Yoshikazu Yakake, Otsu, JP;
Assignee:
Toray Industries, Inc., , JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B29C 47/88 (2006.01); D01F 6/76 (2006.01); D01D 5/098 (2006.01); D04H 3/00 (2012.01);
U.S. Cl.
CPC ...
D01F 6/765 (2013.01); D01D 5/0985 (2013.01); D04H 3/00 (2013.01);
Abstract
A method for producing a long fiber nonwoven fabric includes (a) melting resin containing polyphenylene sulfide as main component, discharging it from a spinneret, solidifying resulting filaments by cooling and stretching the filaments by pulling them out of an ejector at a spinning speed of 3,000 m/min or more while heat-treating as the filaments travel to the ejector outlet to provide a long fiber; (b) collecting the long fiber on a moving net to form a nonwoven web; and (c) subjecting the nonwoven web to thermal bonding.