Method for melt-spinning, drawing, and winding a multifilament thread and a device for performing the method

A fully drawn yarn, melt spinning technology, applied in the direction of draw spinning, textile and papermaking, rayon physical therapy, etc., can solve problems such as large tensile force, achieve compact stretching and relaxation, and improve the tightness of the yarn. degree of effect

Active Publication Date: 2012-05-23
OERLIKON TEXTILE GMBH & CO KG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, such cold-drawn threads have the disadvantage that very high drawing forces have to be generated, which lead to significant problems especially when producing several parallel-guided

Method used

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  • Method for melt-spinning, drawing, and winding a multifilament thread and a device for performing the method
  • Method for melt-spinning, drawing, and winding a multifilament thread and a device for performing the method

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0032] figure 1 An embodiment of the device according to the invention is shown for carrying out the method for manufacturing a fully drawn yarn according to the invention.

[0033] In order to melt-spin the multifilament, a heatable spinning box 1 is provided, which has a spinning nozzle 3 on its lower side and a melt inlet 2 on its upper side, the spinning nozzle with multiple nozzles Silk hole. The melt feed 2 is connected to a melt source not shown here, such as an extruder. Other components for guiding and conveying the melt can be provided in the spinning box 1, which will not be described in detail here.

[0034] The spinning box 1 has a plurality of spinning nozzles 3 on its lower side so as to simultaneously spin a plurality of threads in parallel side by side. The spinning box 1 is oriented transversely to the plane of the figure, thus in figure 1 Only one of the spinning nozzles 3 is visible. Therefore, the downstream devices and assemblies are explained in detail w...

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PUM

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Abstract

The invention relates to a method for melt-spinning, drawing, and winding a multifilament thread to form a fully-drawn yarn and to a device for performing the method. First, a plurality of filaments are extruded from a thermoplastic melt, cooled to a temperature below the glass transition temperature of the thermoplastic material, and joined to form a filament bundle by supplying a preparation oil having a water content of at most 8%. Then, the filament bundle is removed by a simple partial wrapping on optionally heated guiding jackets of several driven galettes at a speed above 1,200 m/min. For drawing and subsequent relaxation, the filament bundle is guided at a drawing speed above 3,500 m/min by a simple partial wrapping on the circumference of further heated guiding jackets of driven galettes. For this purpose, the device according to the invention comprises two galette groups having several driven galettes, wherein the first galette group guides the filament bundle in order to remove and/or heat the filament bundle by simple partial wrapping and the second galette group guides the filament bundle in order to draw the filament bundle by simple partial wrapping.

Description

Technical field [0001] The invention relates to a method for melt-spinning, drawing and winding multifilaments to form fully drawn yarns and a device for implementing the method according to the preamble of claim 9. Background technique [0002] A method of the same type for melt spinning, stretching and winding of multifilament yarns and a device of the same type for implementing the method are known, for example, from DE 21 18 316 A1. [0003] It is well known that when manufacturing synthetic yarns, especially for textile applications, the multifilament is stretched more or less after melt spinning, depending on the type of yarn to be manufactured. According to the degree of stretching, it is divided into so-called pre-oriented yarns and fully drawn yarns. The pre-oriented yarn has a pre-oriented, unstretched structure and is usually further processed into the final yarn in a second process step such as false twisting. In contrast, fully drawn yarns are fully stretched and can...

Claims

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Application Information

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IPC IPC(8): D01D5/12D01D10/00
CPCD01D10/0436D01D5/16
Inventor K·舍费尔H·迈泽D·舒尔茨J·阿德勒
Owner OERLIKON TEXTILE GMBH & CO KG
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