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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.:

US 9693912 B1

PDFFull Text
Date of Patent:
Jul. 04, 2017

Filed:

Feb. 15, 2012

Spunbonded nonwoven fabrics

Applicants:

Akio Matsubara, Ichihara, JP;

Kenichi Suzuki, Ichihara, JP;

Shingo Kajiyama, Ichihara, JP;

Inventors:

Akio Matsubara, Ichihara, JP;

Kenichi Suzuki, Ichihara, JP;

Shingo Kajiyama, Ichihara, JP;

Assignee:

MITSUI CHEMICALS, INC., Tokyo, JP;

Attorney:

Buchanan, Ingersoll & Rooney PC

Primary Examiner:

Jacqueline Stephens

Int. Cl.
CPC ...
A61F 13/15 (2006.01); A61F 13/538 (2006.01); D04H 3/007 (2012.01); D04H 3/018 (2012.01); D04H 3/10 (2012.01); D04H 3/14 (2012.01); D01D 5/24 (2006.01); D01F 6/06 (2006.01); B32B 5/02 (2006.01); B32B 5/26 (2006.01); D04H 3/16 (2006.01); D04H 1/4391 (2012.01); A61F 13/49 (2006.01);
U.S. Cl.
CPC ...
A61F 13/538 (2013.01); B32B 5/022 (2013.01); B32B 5/26 (2013.01); D01D 5/24 (2013.01); D01F 6/06 (2013.01); D04H 1/4391 (2013.01); D04H 3/007 (2013.01); D04H 3/018 (2013.01); D04H 3/10 (2013.01); D04H 3/14 (2013.01); D04H 3/16 (2013.01); A61F 13/49017 (2013.01); A61F 13/49019 (2013.01); A61F 2013/5383 (2013.01); A61F 2013/5386 (2013.01); B32B 2250/20 (2013.01); B32B 2262/0253 (2013.01); B32B 2555/00 (2013.01); B32B 2555/02 (2013.01); Y10T 442/612 (2015.04);
Abstract

An object of the invention is to obtain spunbonded nonwoven fabrics including thin hollow fibers which have excellent lightweight properties and uniformity as well as exhibit high strength and flexibility. An aspect of the invention is directed to a spunbonded nonwoven fabric including hollow fibers of a propylene polymer, the hollow fibers satisfying the following requirements (a) to (c): (a) the C-axis orientation is at least 0.85, (b) the average fiber diameter is 5 to 20 μm, and (c) the hollowness is 5 to 30%.

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Matsubara, Akio. (2017). Spunbonded nonwoven fabrics (U.S. Patent No. 9693912). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/9693912

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