METHOD OF PRODUCING UNWOVEN MATERIAL Russian patent published in 1995 - IPC

FIELD: protection against chemical pollutions. SUBSTANCE: microfibers are pulled away from polymeric melt. Then the microfibers are put down into linen formed continuously at the receiving part of the shell. Solid particles of ion-exchange filler are introduced and the linen got is pulled out to have ion-exchange filler inside. Then the linen is compacted in roller press and ready material is wound. In this case the microfibers pulled out are put down onto the internal surface of the linen being under forming continuously through all its perimeter The linen is compacted in roller press before winding at the temperature of softening of polymeric material. Natural compounds are used as ion-exchange filler or ion-exchange synthetic gums. Polypropylene is used as polymeric material. EFFECT: improved efficiency. 4 cl, 2 dwg