Method for taking up and drawing a multifilament during melt-spinning, and apparatus for carrying out said method

A technology of multifilament yarn, melt spinning, applied in the field of equipment for drawing and stretching multifilament yarn during melt spinning and implementing this, to achieve the effect of eliminating internal stress

Inactive Publication Date: 2011-04-13
OERLIKON TEXTILE GMBH & CO KG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Methods and devices of this type require therefore a large free yarn-guiding path in order to be able to achieve sufficient tempering at high speeds

Method used

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  • Method for taking up and drawing a multifilament during melt-spinning, and apparatus for carrying out said method
  • Method for taking up and drawing a multifilament during melt-spinning, and apparatus for carrying out said method
  • Method for taking up and drawing a multifilament during melt-spinning, and apparatus for carrying out said method

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Embodiment Construction

[0037] in the attached figure 1 with 2 A first embodiment of a device according to the invention for carrying out the method of the invention is shown in . in the attached figure 1 The embodiment is shown schematically in side view and in the accompanying figure 2 is schematically shown in top view. The following description applies to both figures as long as no explicit reference is made to one of the figures.

[0038] This exemplary embodiment has a withdrawal godet 2 for the withdrawal of the yarn 15 by a spinning device not shown here. The withdrawal godet 2 has a hollow-cylindrical guide housing 2.1 and a drive shaft 2.2 connected to the guide housing 2.1 in a rotationally fixed manner. The drive shaft 2.2 is coupled to a godet drive 5.1. A heating device 10.1 is arranged inside the guide housing 2.1 from which the godet 2 is withdrawn, by means of which the guide housing 2.1 can be heated.

[0039] The outer diameter of the guide housing 2.1 of the extraction god...

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Abstract

The invention relates to a method and an apparatus for taking up and drawing a multifilament during melt-spinning. In said method and apparatus, the multifilament is guided on driven guiding sleeves of several godets, at least partially going therearound. Several guiding sleeves are heated. One of the guiding sleeves is driven at a circumferential speed exceeding 1,500 m/min so as to take up the multifilament, while at least one guiding sleeve located downstream is driven at least at twice said circumferential speed so as to draw the multifilament. In order to sufficiently heat the multifilament as the same goes around the guiding sleeves once and generate a sufficient tensile force on the multifilament, the multifilament is guided on the guiding sleeve that is driven for taking up the multifilament such that the multifilament and the guiding sleeve are in uninterrupted contact for a minimum length of 650 mm, the guiding sleeve being heated to a surface temperature ranging from 80 DEG C to 200 DEG C.

Description

technical field [0001] The invention relates to a method for drawing and drawing multifilament yarns during melt spinning according to the preamble of claim 1 and a method for implementing this according to the preamble of claim 8 method of equipment. Background technique [0002] It is generally known in the production of synthetic yarns to draw off and draw the multifilament yarn by means of godets after melt spinning. Depending on the degree of drawing, a distinction is made here between so-called pre-oriented yarns or fully drawn yarns. Pre-oriented yarns (POY-garnen) have a pre-oriented, but not fully drawn structure. The fully drawn yarn (FDY-Garnen) is fully drawn. In order to be able to carry out in particular high drawing of such multifilament yarns, the yarn is usually heated to a drawing temperature during withdrawal in order to be drawn later in the drawing stage. It is known, for example, from DE 199 58 245 A1 that such a yarn heating takes place here via a ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01D5/12D01D10/00B29C48/05B29C48/32B29C48/335
CPCD01D10/02D01D11/06D01D5/16D01D13/02B29C47/0014D01D10/0436B29C47/20B29C48/05B29C48/32
Inventor H·魏根德
Owner OERLIKON TEXTILE GMBH & CO KG
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