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:
Feb. 03, 2009
Filed:
Oct. 06, 2005
Daisuke Tanaka, Okayama, JP;
Yasuhiro Yoshida, Okayama, JP;
Hisao Yoneda, Okayama, JP;
Kuraray Co., Ltd., Kurashiki-shi, JP;
Abstract
To provide a method of producing a nonwoven fabric for artificial leather and substrate for artificial leather which is capable of providing the substrate for artificial leather having a sufficient shape stability by producing the nonwoven fabric for artificial leather without causing serious damages to the scrim. A method of producing a nonwoven fabric for artificial leather, including a step of entanglement for uniting superposed fiber web and scrim by a needle punching, wherein the needle punching is performed in a manner satisfying the following formulae 1 and 2:<2/cos(×(π/180))  (1)<2/cos(×(π/180))  (2)wherein Sis a diameter of warps constituting the scrim, Sis a diameter of wefts constituting the scrim, Dis an angle between the warps and barbs which penetrate the scrim, Dis an angle between the wefts and barbs which penetrate the scrim, and P is a total barb depth of the barbs.