Composite textured yarn, a process for its production, woven or knitted fabrics made thereof, and an apparatus for producing it

A composite textured yarn according to any preceding claim, which said yarn has at least one structure selected from the group consisting of loops, snarls, slackened portions and fluff.

A composite textured yarn which comprises a core component yarn B and a sheath component yarn A, said yarns A and B being mutually false twisted and thereby crimped, wherein said component yarns A and B differ in yarn length or shrinkage, wherein said single fibers of said core component yarn B have less yarn length or greater shrinkage than said single fibers of said sheath component yarn A, and wherein said fibers of said core yarn B comprise thick and thin portions or high shrinkage and low shrinkage portions, which portions are intermittently positioned along the length of said false twisted composite yarn, and wherein said core component yarn B has a spontaneous elongation of 0.2 to 25% under heat treatment and said sheath component yarn A does not spontaneously substantially elongate.

A composite textured yarn which comprises a core component yarn B and a sheath component yarn A, said yarns A and B being mutually false twisted and thereby crimped, wherein said component yarns A and B differ in yarn length or shrinkage, wherein said single fibers of said core component yarn B have less yarn length or greater shrinkage than said single fibers of said sheath component yarn A, and wherein said core component yarn B has a spontaneous elongation of 0.2 to 25% under heat treatment and said sheath component yarn A does not spontaneously substantially elongate.