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. 05, 2017
Filed:
Jun. 25, 2008
Michinori Fujisawa, Okayama, JP;
Jiro Tanaka, Okayama, JP;
Norio Makiyama, Okayama, JP;
Yoshiyuki Ando, Okayama, JP;
Yoshiki Nobuto, Okayama, JP;
Michinori Fujisawa, Okayama, JP;
Jiro Tanaka, Okayama, JP;
Norio Makiyama, Okayama, JP;
Yoshiyuki Ando, Okayama, JP;
Yoshiki Nobuto, Okayama, JP;
KURARAY CO., LTD., Kurashiki-shi, JP;
Abstract
A substrate for artificial leather comprising a nonwoven fabric of bundles of microfine filaments. The substrate for artificial leather simultaneously satisfies the following requirements 1 to 4: (1) the bundle of microfine filaments comprises 8 to 70 microfine filaments having a cross-sectional shape of nearly circle; (2) the bundle of microfine filaments has a cross-sectional area of 170 to 700 μmand a flatness of 4.0 or less; (3) on a cross section parallel to a thickness direction of the nonwoven fabric body, cross sections of the microfine fiber bundles exist in a density of 1500 to 3000/mm; and (4) on a cross section parallel to a thickness direction of the nonwoven fabric body, gaps between the microfine fiber bundles have a size of 70 μm or less. By satisfying the requirements, the substrate for artificial leather combines high level of sensuous qualities and high level of physical properties which have been considered to be mutually exclusive.