METHOD OF REMOVAL OF SOLUBLE IN ORGANIC SOLVENT NONWOVEN WARP POLYMERIC COMPONENT Russian patent published in 1997 - IPC

FIELD: plastics production, method of removal of soluble in organic solvent component of nonwoven warp produced with usage of synthetic fiber of "die - fibrils". SUBSTANCE: to decrease duration of process and consumed amount of organic solvent with simultaneous improvement of commercial material properties treatment of nonwoven warp is carried out by vapors and bottoms of boiling solvent under periodical action of pressing efforts. Method is realized by nonwoven warp passing on conveyor-warp through pressing rolls located between surfaces of oiling solution of polymer and condenser of solvent vapors. As a result of it full washing-out of extracting component. EFFECT: decreased duration of process and consumed amount of organic solvent, improved commercial material properties. 4 cl, 2 dwg, 1 tbl