FILTRATION CLOTH Russian patent published in 1999 - IPC

FIELD: filtration technics. SUBSTANCE: cloth contains warp and weft twine threads. Reinforced warp thread is used in combination with weft cable cotton yarn or with weft reinforced twine thread, and weft reinforced twine thread is used in combination with warp cable cotton yarn or with warp reinforced twine thread. Number of warp threads is 80 to 220 per 10 cm and number of weft threads 50 to 140. Their ratio in cloth is (0.8 to 1.5):1. Surface density of cloth ranges from 300 to 980 g/sq.m. Warp and weft reinforced threads are composed of 2 to 10 cords and contain heart and braid. Heart represents polyester or polyamide, or polyacrylonitrile, or polyvinylchloride, or polyaromelene, or viscose, or chlorine, or long viscose complex thread or yarn. Braid is cotton fiber or its mixtures with synthetic fibers, or polyester, or polyamide, or polypropylene, or polyacrylonitrile, or polyvinylchloride, or viscose, or its mixture with polyester or polyamide fibers. Linear density of thread equals 25 to 250 tex, and ratio of linear density of braid to that of yarn ranges from 0.3 to 0.8. EFFECT: increased heat and chemical resistance of cloth, and enabled variation of its surface properties. 2 tbl