Grain-finished artificial leathers

Details Grain-finished artificial leathers Grain-finished artificial leathers

2005-04-26

2008-10-28

Torres-Velazquez, Norca (Department: 1794)

Stock material or miscellaneous articles

Structurally defined web or sheet

Continuous and nonuniform or irregular surface on layer or...

C442S059000, C442S063000, C442S067000, C442S076000, C442S102000

Reexamination Certificate

active

07442429

ABSTRACT:
A grain-finished artificial leather composed of a base layer and a coating layer Y formed on one of the surfaces of the base layer. The base layer is composed of an entangled nonwoven fabric X made of bundles of microfine fibers having an average single fiber fineness of 0.07 dtex or less and impregnated with a polymeric elastomer A and a polymeric elastomer B. The entangled nonwoven fabric X is composed of a lower layer XAand an upper layer XBwherein the lower layer XAis impregnated mainly with the polymeric elastomer A which is substantially not adhered to the bundles of microfine fibers and the upper layer XBis impregnated mainly with the polymeric elastomer B which is substantially not adhered to the bundles of microfine fibers. The coating layer Y is composed of a coating layer YBhaving a thickness of 1 to 10 μm which is made of the polymeric elastomer B and formed on the upper layer XB, a coating layer YCwhich is made of a polymeric elastomer C and formed on the coating layer YB, and a finished layer YEwhich is formed on the coating layer YC. The grain-finished artificial leather having the above structure combines a natural leather-like, delicate appearance, a good softness and flexibility, and a high peel strength.

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