Patent ID: 9303342
Filing Date: 2016-04-05
CPC Classification: B32B,D01F,D04H,D06N,Y10T

Claim Text:
1. A method for making an artificial leather substrate, comprising: (a) providing a plurality of composite fibers, wherein each of the composite fibers comprises a first composition and a second composition, the first composition is thermoplastic non-elastomer, the second composition is thermoplastic elastomer (TPE), and the second composition is in an amount of 5 to 70 weight % of the composite fiber, the first composition and the second composition are alternately distributed in a circumference of a cross-section of each of the composite fibers, and the length of the second composition is less than 50% of the total length of the circumference; (b) forming a plurality of fiber webs, wherein the fiber webs contain the composite fibers; (c) stacking the fiber webs; (d) performing needle punching or water punching on the fiber webs; (e) softening the second composition to bond the composite fibers; and (f) curing the second composition, so that cross-points between the composite fibers are elastic bonding points formed by the second composition.