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

• Main Authors: YOSHIDA, YASHUHIRO, YONEDA, HISAO, TANAKA, DAISUKE
• Format: Patent
• Language: English; French; German
• Published: 17.12.2014
• Subjects: BRAIDING; COTTON-WOOL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS,NON-WOVEN FABRICS; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR; KNITTING; LACE-MAKING; LAUNDERING; LAYERED PRODUCTS; LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM; MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARYMATERIAL; NON-WOVEN FABRICS; PERFORMING OPERATIONS; TEXTILES; TRANSPORTING; TREATMENT OF TEXTILES OR THE LIKE; TRIMMINGS; WADDING; WALL, FLOOR OR LIKE COVERING MATERIALS, e.g. LINOLEUM,OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF AFIBROUS WEB COATED WITH A LAYER OF MACROMOLECULARMATERIAL

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.