NONWOVEN FABRIC FOR ARTIFICIAL LEATHER AND PROCESS FOR PRODUCING ARTIFICIAL LEATHER SUBSTRATE

摘要

Problem to be Solved 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. Means for Solving .Problem 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:
wherein S 1 is a diameter of warps constituting the scrim, S 2 is a diameter of wefts constituting the scrim, D 1 is an angle between the warps and barbs which penetrate the scrim, D 2 is an angle between the wefts and barbs which penetrate the scrim, and P is a total barb depth of the barbs.