Yarn withdrawal device for open-end spinning arrangements...

Details Yarn withdrawal device for open-end spinning arrangements... Yarn withdrawal device for open-end spinning arrangements...

2006-05-30

2006-05-30

Hurley, Shaun R. (Department: 3765)

Textiles: spinning, twisting, and twining

Apparatus and processes

Open end spinning

C057S417000

Reexamination Certificate

active

07051508

ABSTRACT:
A yarn withdrawal device for open-end spinning arrangements has a yarn withdrawal nozzle and a balloon-breaking insert which extends the axial channel of the yarn withdrawal nozzle. The yarn withdrawal nozzle has a curved contact surface for deflecting a yarn to be withdrawn and simultaneously rotating the yarn in a crank-like manner, which contact surface graduates from a front surface into the axial channel. The balloon-breaking insert has an inner wall which is provided with raised areas and/or recesses, with which the yarn comes into contact. The contact surface of the yarn withdrawal nozzle is a smooth steel surface. The raised areas and/or the recesses of the balloon breaking insert are such that a yarn hairiness in the range of 3 mm in length is achievable. In addition, values in relation to the spinning stability, tear resistance and evenness can be achieved which are usual in the case of a notched contact surface of standard yarn withdrawal nozzles without a balloon-breaking insert.

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