Yarn heating apparatus

Details Yarn heating apparatus Yarn heating apparatus

1997-03-28

1998-04-07

Stryjewski, William

Textiles: spinning, twisting, and twining

Apparatus and processes

Twist setting

28249, 57284, 57352, D01H 746, D01H 792

Patent

active

057351120

ABSTRACT:
A yarn heating apparatus, interposed between a false twist apparatus imparting twist to a synthetic fiber yarn and a yarn feed apparatus feeding the synthetic fiber yarn to the false twist apparatus, is designed to heat the synthetic fiber yarn traveling on a yarn travel path extending from the yarn feed apparatus to the false twist apparatus. The yarn travel path includes a twist existence path section through which the twist imparted to the synthetic fiber yarn extends continuously. The yarn heating apparatus comprises a yarn heat member unit formed with a yarn heat channel defining in part the twist existence path section of the yarn travel path for heating the synthetic fiber yarn passing through the yarn heat channel, and a plurality of yarn guide members located in the yarn heat channel of the yarn heat member unit in spaced relationship to one another for guiding the synthetic fiber yarn through the yarn heat channel of the yarn heat member unit. The synthetic fiber yarn in the yarn heat channel is bent by each of the yarn guide members and has a plurality of contact surface portions each brought into contact with each of the yarn guide members. The contact surface portions of the synthetic fiber yarn have lengths, respectively, measured along the yarn travel path. The lengths of the contact surface portions of the synthetic fiber yarn amount to a total contact length which is not less than 4 mm and not more than 20 mm.

REFERENCES:
patent: 5138829 (1992-08-01), Tanae et al.
patent: 5148666 (1992-09-01), Bauer et al.
patent: 5353583 (1994-10-01), Tanae et al.
patent: 5404705 (1995-04-01), Yanagihara et al.
patent: 5438820 (1995-08-01), Nakahara et al.
patent: 5528893 (1996-06-01), Yanagihara et al.

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