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. 19, 2012
Filed:
Jul. 25, 2007
Hozuma Okada, Kyoto, JP;
Kunio Ichihashi, Osaka, JP;
Hozuma Okada, Kyoto, JP;
Kunio Ichihashi, Osaka, JP;
Tradik Co., Ltd., Kyoto, JP;
Abstract
A sheet of an artificial leather substrate contains an upper-layer nonwoven fabric A () and a base nonwoven fabric B (). The upper-layer nonwoven fabric A () is a wet-laid nonwoven fabric having a density of 0.30 to 0.50 g/cmand being produced with synthetic fibers in which the component fibers have a fineness of 0.005 to 1.1 dtex, a fiber length of 3 to 10 mm and a weight per unit area of 20 to 150 g/m, and the base nonwoven fabric B () is a layer of a nonwoven fabric having a density of 0.15 g/cmor more and less than 0.28 g/cmand being produced with synthetic fibers in which the component fibers have a fineness greater than that of the component fibers of the upper-layer nonwoven fabric A and 4.5 dtex or less, a fiber length of 2 to 15 mm and a weight per unit area of 50 to 400 g/m. The upper-layer nonwoven fabric A () and the base nonwoven fabric B () are layered, made into a single body by entanglement of the component fibers of both layers and impregnated with an elastic polymer. Thus, artificial leather having a texture similar to natural leather and a substrate for use therein are provided at low cost.