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:
Jun. 11, 2024
Filed:
Mar. 02, 2020
Applicant:
Toray Industries, Inc., Tokyo, JP;
Inventors:
Makoto Nakahara, Otsu, JP;
Hiroshi Kajiyama, Otsu, JP;
Assignee:
Toray Industries, Inc., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G10K 11/162 (2006.01); D04H 1/43 (2012.01); D04H 1/435 (2012.01); D04H 1/492 (2012.01); D04H 13/00 (2006.01); G10K 11/168 (2006.01);
U.S. Cl.
CPC ...
G10K 11/168 (2013.01); D04H 1/43 (2013.01); D04H 1/435 (2013.01); D04H 1/492 (2013.01); D04H 13/00 (2013.01); D10B 2401/063 (2013.01); G10K 2210/3223 (2013.01);
Abstract
A sound-absorbing material nonwoven fabric includes: 30 to 80 mass % of short fibers A having a fineness of 0.4 to 0.9 dtex; and 20 to 70 mass % of short fibers B having a fineness of 1.1 to 20.0 dtex. A carding passage coefficient of the short fibers A calculated from equation (1) is in a range of 15 to 260. The equation (1) is carding passage coefficient=(fineness×strength×√elongation percentage×√number of crimps×√crimping degree)/(fiber length).