Method for producing yarn and apparatus thereof

A yarn manufacturing and yarn technology, applied in the field of yarn manufacturing and its devices
CN1610770AInactive Publication Date: 2005-04-27INVISTA TECHNOLOG IES S A R L
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
INVISTA TECHNOLOG IES S A R L
Publication Date
2005-04-27
Estimated Expiration
Not applicable · inactive patent

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Abstract

The present invention relates to the combination of a tension gate and an air shield in the relax zone of a fiber production process. The combination provides a synergistic effect over an air shield alone, or a tension gate alone, or the added effect of both a tension gate and an air shield. The air shield is a plate like structure with or without perforations. The air shield plates are placed in close proximity to a pair of rolls following the tension gate. The tension gate can be one or more air drag devices, one or more liquid drag devices, or one or more solid surface contact devices, or a combination of any of the above. The apparatus and the process for using the apparatus is disclosed and claimed.
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Description

technical field

[0001] The present invention relates to a synergistic combination of an air shield and a tension gate arrangement and a method of operating the synergistic combination in a slack zone during yarn manufacture. Air shields and tension gate devices are included in the relaxation zone during yarn manufacturing to increase yarn stability on the relaxation rolls, especially at process speeds greater than 4,000 m / min Down. In particular, the invention relates to the part of yarn manufacture in which the yarn is relaxed to control its shrinkage without reducing the stability of the yarn on the relaxation rolls. Typical methods with means for relaxing the yarn during manufacture are spin-draw, draw-twist, draw-twist, draw-bulk methods. Background technique

[0002] It is known to use air shields in the relaxation phase of yarn manufacture. It is also known to use tension gates in the relaxation zone.

[0003] US Patent 5,240,667 to Andrews, Jr. et al. discloses a ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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