PRODUCTION OF ARTIFICIAL LEATHER SUBSTRATE

• Main Authors: TANAKA NORIYUKI, YONEDA HISAO
• Format: Patent
• Language: English
• Published: 13.09.1989
• Subjects: FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR; LAUNDERING; TEXTILES; TREATMENT OF TEXTILES OR THE LIKE; TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS,FABRICS, FEATHERS, OR FIBROUS GOODS MADE FROM SUCH MATERIALS; WALL, FLOOR OR LIKE COVERING MATERIALS, e.g. LINOLEUM,OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF AFIBROUS WEB COATED WITH A LAYER OF MACROMOLECULARMATERIAL

PURPOSE:To obtain the title flexible substrate having feed of stiffness by treating a sheet-like produce prepared by imparting a fibrous structure made up of fiber soluble to a solvent or decomposable by a decomposing agent with an elastomer using said solvent or decomposing agent to remove a specified amount of the fiber. CONSTITUTION:A fibrous structure (e.g., nonwoven fabric, woven-knitted fabric) chiefly made up of a fiber (e.g., polyester fiber) soluble to a solvent or decomposable by a decomposing agent is imparted with a polymer consisting mainly of an elastomer such as polyurethane to produce a sheet-like product. This sheet-like product is then treated with said solvent or decomposing agent (e.g., sodium hydroxide) to remove 5-20wt.% of the fiber, thus obtaining the objective artificial leather substrate with the development of vague unevennesses at the hanging part suppressed. Alternatively, a fibrous sheet-like produce made up of a fibrous structure and elastomer, consisting mainly of said fiber and elastomer, is freed from 5-20wt.% of the fiber and the elastomer using a solvent or the like, thus obtaining an artificial leather substrate with similar disposition to that of the above substrate.