FABRIC FOR VENTILATION PIPES Russian patent published in 1997 - IPC

FIELD: production of industrial fabric. SUBSTANCE: fabric has thermoplastic polymeric coat and contains complex synthetic threads, which are interwoven to form cells. Fabric has void factor of 0.24-1. Polymeric coat contains polyvinyl chloride suspension, salts of alkyl (aryl) phosphoric acids and blocked polyisocyanates. Thickness of fabric is 0.1-1.5 mm. Fabric cells have thickness of 0.01-3.5 mm. Fabric contains natural or synthetic threads or mixture of these threads. EFFECT: increased efficiency by improved air-tightness and adhesion strength, reduced surface electrical resistance and improved weldability by high-frequency current. 3 cl, 1 tbl