Different shrinkage mixed yarn and method of producing such

Details Different shrinkage mixed yarn and method of producing such Different shrinkage mixed yarn and method of producing such

1997-09-22

1999-01-12

Tentoni, Leo B.

Plastic and nonmetallic article shaping or treating: processes

With twining, plying, braiding, or textile fabric formation

3641711, 36417713, 3642108, D02G 300, D02G 304

Patent

active

058582908

ABSTRACT:
A different shrinkage mixed yarn is produced using core and effect yarns, which are selected from the same or different polymer and have different thermal shrinkage percentages. The core and effect yarns, which are spun from different spinnerets of a spin draw spinning machine, are doubled and interlaced into a mixed yarn prior to being taken up by a take-up machine, with the core yarn passing through a direct drawing yarn passage and the effect yarn passing through a bypassed yarn passage. The core yarn is drawn and thermally fixed due to a difference in the rotating speed between first and second godet rollers, while the effect yarn is drafted due to the rotating speed of the take-up machine so that the effect yarn has properties of a POY.

REFERENCES:
patent: 4025595 (1977-05-01), Mirhej

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