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:
Sep. 18, 2018
Filed:
Oct. 23, 2009
Hisashi Morimoto, Ichihara, JP;
Kazuhiko Masuda, Chiba, JP;
Hisashi Morimoto, Ichihara, JP;
Kazuhiko Masuda, Chiba, JP;
MITSUI CHEMICALS, INC., Minato-Ku, Tokyo, JP;
Abstract
A crimped conjugated fiber having a cross-sectional configuration wherein: a cross section of the fiber comprises at least a portion (a) comprising a propylene polymer (A) and a portion (b) comprising a propylene polymer (B), the mass ratio of the portion (a) and the portion (b) is in the range of 10:90 to 55:45, the propylene polymer (A) has Mz/Mw (A) and the propylene polymer (B) has Mz/Mw (B) wherein the difference thereof is in the range of 0.30 to 2.2, the absolute value difference of the melting points of the propylene polymer (A) and the propylene polymer (B) is in the range of 0 to 10° C., and the ratio of MFR (A) of the propylene polymer (A) to MFR (B) of the propylene polymer (B) is in the range of 0.8 to 1.2. A nonwoven fabric of crimped conjugated fiber is also provided.