SACKCLOTH Russian patent published in 1999 - IPC

FIELD: production of sackcloth and like materials. SUBSTANCE: sackcloth is made by interweaving core threads of linen filaments and filling threads of polypropylene. Sackcloth is manufactured on pneumatic rapier weaving machine. Ratio of linear densities of core and filling threads is 1:0.5-0.9. Filling thread content is 25-35% of surface density of the whole cloth. Propylene used for manufacture of sackcloth is of textured and fibrillated kind. EFFECT: reduced material usage and increased service life. 2 tbl