Method and apparatus for twisting yarn, and product

Details Method and apparatus for twisting yarn, and product Method and apparatus for twisting yarn, and product

1989-09-28

1990-08-21

Schroeder, Werner H.

Textiles: manufacturing

Thread finishing

Surface modification of running length

57908, D02G 116, D02G 324, D02J 106

Patent

active

049494406

ABSTRACT:
An apparatus for processing yarn, comprising yarn supply packages for supplying a yarn. First and second feed rolls and a take-up roll are provided for delivering the plied yarn from the supply package onto a take-up package. An air-jet is positioned between the first and second feed rolls for inserting short, spaced-apart entangled segments into the plied yarn as the plied yarn moves past the air-jet at a predetermined speed. The air-jet comprises an enclosure having a yarn entrance and a yarn exit and a nozzle for directing a stream of pressurized air into the enclosure and against the plied yarn while the plied yarn is moving through the enclosure. The nozzle moves past the enclosure at substantially the same surface speed as the yarn is moving through the enclosure whereby the stream of pressurized air impacts a short, discrete segment of yarn while the segment of yarn is within the enclosure.

REFERENCES:
patent: 3805344 (1974-04-01), Bartnicki et al.
patent: 4085487 (1978-04-01), Barch et al.

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