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

A technology of melt spinning and multifilament yarn, applied in the field of drawn yarn

Active 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

[0005] This known method and known equipment are only suitable under limited conditions for carrying out a complete thermal drawing of the yarn

Method used

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

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Embodiment Construction

[0034] in the attached figure 1 and 2 A first embodiment of an apparatus according to the invention for carrying out the method for producing fully drawn yarns according to the invention is shown in several views. in the attached figure 1 The embodiment is shown in side view and in the appended figure 2 Shown in front view. The following description applies to both figures as long as no explicit reference is made to one of the figures.

[0035] For melt spinning a multifilament yarn, a heatable spinneret 1 is provided, which has spinning nozzles 3 on its bottom side, which have a number of spinneret holes, and the spinneret in It has a melt inlet 2 on its upper side. The melt inlet 2 is coupled to a melt source (not shown here), for example an extruder. Further melt-guiding and melt-conveying components can be arranged inside the spinneret 1 , which will not be described in detail here.

[0036] The spinneret has a plurality of spinning nozzles 3 on its underside in or...

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Abstract

The invention relates to a method for melt-spinning, drawing, and winding up a multifilament to form a fully drawn yarn (FDY) as well as an apparatus for carrying out said method. According to the invention, first, a plurality of filaments is extruded from a thermoplastic melt, is cooled to a temperature lying below the glass transition temperature of the thermoplastic material, and is combined into a filament bundle without feeding a finishing fluid. The filament bundle is then taken up at a speed exceeding 1,500 m/min, is heated to a temperature exceeding the glass transition temperature of the thermoplastic material, and is drawn at a drawing speed exceeding 4,000 m/min. The filament bundle is then finished using a finishing fluid, and the thread is wound up into a package. According to the invention, the finishing device is arranged in a thread running zone between the drawing device and the winding device of the apparatus, the thread having a thread running speed exceeding 4,000 m/min in said zone. The method and apparatus according to the invention thus form an energetically optimized process for producing fully drawn yarns.

Description

technical field [0001] The present invention relates to a method for melt spinning, drawing and winding multifilament yarns to form fully drawn filaments according to the preamble of claim 1 and a method according to the preamble of claim 9 equipment for carrying out this method. Background technique [0002] A similar method for melt-spinning, drawing and winding multifilament yarns to form fully drawn yarns and a similar device for carrying out this method are known, for example, from DE 31 46 054 A1. [0003] When manufacturing synthetic yarns, they are divided into pre-oriented yarns and fully drawn yarns according to the degree of orientation of the molecular chains of the polymer material inside the yarns. Pre-oriented yarns (POY-garnen) have a pre-oriented, but not fully drawn structure. Yarns of this type are preferably further processed in a stretch texturing process. The fully drawn yarn (FDY-Garnen) is an oriented fully drawn structure. Such yarns can thus be ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01D5/088D01D13/00D02G1/02D02J1/08D02J1/22D02J13/00B29C48/05B29C48/32B29C48/335
CPCD01D10/02D01D11/06D01D5/16D01D13/02B29C47/0014D01D10/0436B29C47/20B29C48/05B29C48/32
Inventor H·魏根德H·迈泽D·舒尔茨
Owner OERLIKON TEXTILE GMBH & CO KG
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