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Method and device for crimping a multifilament thread

A multi-fiber, filament technology, used in textiles and papermaking, to solve problems such as unsatisfactory and reliable operation of optical systems, rapid contamination, etc.

Inactive Publication Date: 2014-09-10
OERLIKON TEXTILE GMBH & CO KG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these optical inspection systems have only limited use possibilities, since the curling environment causes rapid soiling due to high temperatures and a large number of flying particles such as residual finishing agents and color particles
Optical systems have proven to be completely unsuitable for reliable operation in a stuffer box environment

Method used

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  • Method and device for crimping a multifilament thread
  • Method and device for crimping a multifilament thread
  • Method and device for crimping a multifilament thread

Examples

Experimental program
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Embodiment Construction

[0031] exist figure 1 A first embodiment of the device according to the invention is schematically shown in a cross-sectional view in FIG. The device has a delivery nozzle 1 comprising a vertically extending filament channel 3 . The filament channel 3 extends from a filament inlet 7 on the top side of the delivery nozzle 1 to a filament outlet 6 on the bottom side of the delivery nozzle 1 . A plurality of compressed air channels 4 open into the thread channel in the upper region of the delivery nozzle 1 and connect the thread channel to a compressed air source 5 . Further components, not shown here, are provided between delivery nozzle 1 and compressed air source 5 for conducting and processing the compressed air. It is common, for example, to heat the compressed air before entering the filament channel 3 .

[0032] Directly adjoining the underside of the delivery nozzle 1 is a stuffer box 2 , which is delimited by a gas-permeable box wall 8 and held within the suction cham...

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PUM

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Abstract

A method and a device for crimping a multifilament thread are described. The thread is blown by means of a transport nozzle through a compressed air stream guided in a thread channel into a gas-permeable compression chamber. Inside the compression chamber, the thread is compressed to form a thread plug, which is then continuously removed through an outlet of the compression chamber. The compression and the removal of the thread plug are monitored by measuring the pressure of the compressed air stream. According to the invention, a plurality of pressures of the compressed air stream in the compression chamber are measured at a plurality of measurement points distributed over the length of the compression chamber for monitoring the thread plug formation in order to perform the compressing and cooling of the thread plug with a uniform filling of the compression chamber.

Description

technical field [0001] The invention relates to a method for texturing a multifilament filament according to the preamble of claim 1 and an apparatus for texturing a multifilament filament according to the preamble of claim 7 . Background technique [0002] In the melt-spinning of multifilament synthetic filaments, it is known to crimp the individual filament strips before the filaments are wound up. This crimping is preferably produced in the multifilament filaments according to the stuffer box principle. In this case, the multifilaments are conveyed pneumatically by means of conveying nozzles and blown into the stuffer box. For this purpose, the delivery nozzle has a filament channel which is connected to a compressed air source for generating the compressed air flow. The filaments are then conveyed by a stream of compressed air into a stuffer box where the filaments are stuffed into thread plugs. The monofilament strands of the filaments are laid down in loops and arcs...

Claims

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Application Information

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IPC IPC(8): D02G1/12
CPCD02G1/12D02G1/122D02G1/125
Inventor M·施廷德尔C·马蒂斯C·胡贝特
Owner OERLIKON TEXTILE GMBH & CO KG
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