METHOD FOR PRODUCTION OF NONWOVEN BONDED MATERIAL Russian patent published in 1996 - IPC

FIELD: light industry. SUBSTANCE: method for production of nonwoven bonded material includes the following operations: blending of polyester and viscose rayon fibers, emulsifying of the blend, blend loosening, ageing, formation of lap by combing machines, fiber lap impregnated with binder based on aqueous solution of polymer; drying; heat treatment and cooling. Lap is treated with compound containing, mas.%: nonionic surfactant or their mixture 0.02-2.0; organosilicone compound or their mixture 0.05-6.0; tanning compound or their mixture 0.05-3.0; the balance, water. Compounds is taken in the amount of 4-15% of filter mass. Treatment is combined with emulsifying of fiber blend and/or after formation of lap. EFFECT: higher efficiency. 2 cl, 1 tbl