COMBINATION YARN Russian patent published in 2017 - IPC D02G3/00 

FIELD: textile, paper.

SUBSTANCE: invention relates to heat-resistant flame-proof heterogeneous high impact combination yarns for manufacturing protective clothes of fire-fighters, welders, metallurgists, oil workers and military uniforms. Combination yarn made of a core filament para-aramid folded yarn twisted with two polyoxadiazole folded yarns in opposite directions, first in the anticlockwise and then clockwise, with the core yarn tension of 55-180 cN, at a ratio of core yarn twists against the folded yarn of (0.5-0.6):(2.9-3.9), at the weight ratio, wt %: (17-34):(66-83), where the number of twists is equal to 220-390 twist/m and the core yarn twisted surface is at least 65%.

EFFECT: lowering of yarn stiffness when bending and twisting, while high physical, mechanical and performance properties are maintained and the yarns range of linear density of 65-95 tex is expanded.

3 cl, 2 dwg