Sheath-core cospun heather yarns

Details Sheath-core cospun heather yarns Sheath-core cospun heather yarns

D - Textiles, Paper

01

F

28/29, 18/585

D01F 8/04 (2006.01) D01D 5/34 (2006.01) D01F 8/14 (2006.01)

Patent

CA 1082414

ABSTRACT OF THE DISCLOSURE In cospinning two melt-spinnable, fiber-forming polymers to produce a composite heather yarn from filaments of different dyeablility, the apparent weight ratio of one polymer in the yarn can be varied by spinning only a portion of that polymer ad a monocomponent filament and hiding the remainder as the core of a sheath-core filament having the other poly- mer as its sheath. Thus, a wide range of apparent weight ratios of the two polymers in the cospun yarn is provided, without changing the flow rate of the two polymer solutions fed to the spinneret.

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