PRODUCTION OF SPECIFIC EXTREMELY SOFT COMBINED FILAMENT YARN SHOWING DRIED FEELING AND DRAPE PROPERTY

摘要

PURPOSE:To obtain a specific extremely soft combined filament yarn showing excellent dried feeling and drape properties free from irritation by doubling undrawn yarns of polyester having different elongations at break, interlacing, simultaneously drawing and falsely twisting and heat-treating. CONSTITUTION:For example, plural undrawn yarns of polyester, wherein undrawn yarn having higher elongation at break has higher titanium dioxide content than the titanium dioxide content of the undrawn yarn having lower elongation at break, the average titanium dioxide content is =1.5wt.%, difference in elongation at break is 50-120% and double refraction of both the yarns =0.03, are doubled and interlaced. Then the interlaced yarn is simultaneously drawn and falsely twisted at normal temperature to 78 deg.C, and further heat- treated at =130 deg.C to give the objective specific combined filament yarn.