Method for producing composite sheets composed of polymeric fibers and elastic material

Abstract

Abstract A COMPOSITE SHEET SUBSTANCE HAVING THE SIMILAR APPEARANCE AND PHYSICAL PROPERTIES TO THE GENUINE LEATHER IS MANUFACTURED BY MEANS OF USNG FIBROUS MATERIAL COMPOSED OF A PLURALITY OF FINE FIBERS OR FLAMENT AND AN ELASTIC POLYMER SURROUNDING THE FINE FIBERS. A BONDED FIBROUS MATERIAL COMPOSED OF FIBROUS COMPONENT (A COMPONENT) CONTAINING A PLURALITY OF FINE FIBERS OF FILAMENTS AND ANOTHER COMPONENT OF BONDING AGENT (B COMPONENT) BOUND THE ABOVE-MENTIONED FINE FIBERS OR FILAMENTS IN A BUNDLE. FUTHER A SHEET COMPOSED OF THE BONDED FIBROUS MATERIAL IS MADE. THE A COMPONENT HAS DIFFERENT DISSOLVING PROPERTY BY SOLVENT FROM THE B COMPONENT. NEXT THE ABOVE-MENTIONED SHEET IS INVOLVED WITH A POLYMER (C COMPONENT) HAVING A DIFFERENT SOLVENT DISSOLVING PROPERTY FROM THE A AND B COMPONENTS. THE B COMPONENT IS TAKEN OUT FROM THE PRODUCT OF THE INVOLVING TREATMENT BY MEANS OF DISSOLVING INTO A SOLVENT HAVING PARTICULAR ABILITY FOR DISSOLVING THE B COMPONENT ONLY. NEXT A SUBSTANCE MAINLY COMPOSED OF AN ELASTIC POLYMER (D COMPONENT) IS IMPREGNATED INTO THE SHEET AFTER TAKING OUT THE B COMPONETNT, FUTHER THE C COMPONENT IS TAKEN OUT FROM THE SHEET BY MEANS OF DISSOLVING INTO A SOLVENT HAVING PARTICULAR ABILITY FOR ONLY DISSOLVING THE C COMPONENT AFTER THE ABOVEMENTIONED IMPREGNATING TREATMENT, AND FINALLY THE COMPOSITE SHEET SUBSTANCE OF THE PURPOSE IS PRODUCED. IN THE ABOVEMENTIONED MANUFACTURING STEPS, THE SIMILAR RESULTS CAN BE OBTAINED BY APPLYING THE DIFFERENT COMBINATION OF THE STEPS TO THE GENUINE LEATHER, IN OTHER WORDS THE OPERATIING ORDER OF THE TAKING OUT OPERATION OF THE B COMPONENT AND THE IMPREGNATION OPERATION OF THE ELASTIC POLYMER (D COMPONENT) CAN BE CHANGED.

Inventors

• 👤 Masamichi Toki
• 👤 Toyohiko Hikota
• 👤 Miyoshi Okamoto

Bibliographic Details