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Device for melt spinning and cooling a plurality of synthetic filaments

A technology of melt spinning and filament, which is applied in the direction of filament/thread forming, textile and paper making, fiber processing, etc.

Active Publication Date: 2020-10-23
OERLIKON TEXTILE GMBH & CO KG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, depending on the polymer type as well as depending on the thread type, such cross-sectional changes of the filaments are undesirable

Method used

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  • Device for melt spinning and cooling a plurality of synthetic filaments
  • Device for melt spinning and cooling a plurality of synthetic filaments
  • Device for melt spinning and cooling a plurality of synthetic filaments

Examples

Experimental program
Comparison scheme
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Embodiment Construction

[0024] exist figure 1 , a first exemplary embodiment is schematically shown in cross-sectional view. The exemplary embodiment has a spinning device 1 and an underlying cooling device 6 . The spinning device 1 is shown here only schematically and has a spinning head 3 which has a spinneret 2 on its underside. The spinning head 3 is designed to be heated and has further components (not shown here) for guiding the melt, such as distribution lines and spinning pumps. The spinneret 2 has a plurality of nozzle openings 2.1 on its underside. The spinneret 2 is connected to the melt inlet 4 on the top side of the spinneret 3 so that during operation the polymer melt is extruded into thin filaments 5 through the nozzle openings 2.1 of the spinneret 2 . exist figure 1 The spinning device 1 is shown functionally in , in which a plurality of synthetic filaments 5 are produced.

[0025] The cooling device 6 arranged below the spinning device 1 has a hollow cylindrical cooling well 7 w...

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PUM

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Abstract

The invention relates to a device for melt spinning and cooling a plurality of synthetic filaments. The device comprises: a spinning device having at least one spinneret; and a cooling device having ahollow cylindrical cooling well located below the spinneret. The spinneret has a plurality of nozzle openings for extruding filaments. A cooling well below the spinneret includes at least a gas permeable cylindrical portion disposed within a pressure chamber and an air impermeable cylindrical portion disposed within an air chamber connected to an adjustable air source and the pressure chamber. According to the present invention, an airtight cylindrical portion of the cooling well and the air chamber are arranged below the spinneret, and the air chamber is connected to the pressure chamber arranged below the air chamber through a perforated bottom plate. Therefore, a non-active cooling area can be realized below the spinneret.

Description

technical field [0001] The present invention relates to an apparatus for melt spinning and cooling a plurality of synthetic filaments. Background technique [0002] In the production of synthetic yarns in the melt spinning process, it is generally known to use regulated air (Klimaluft) to cool the filaments produced by means of the spinning apparatus after extrusion through the spinneret. By cooling the filaments, it is possible to solidify the polymer, which is still in the molten state during extrusion, into a defined strand-shaped filament cross-section. In this case, it is desirable that the coagulation and formation of the cross-section of the filaments be as identical as possible for all filaments in the group of filaments, so that a high denier uniformity is substantially produced on the filaments. In order to obtain this cooling effect on the filaments after extrusion, various cooling devices are known in the prior art. In this way, the filament bundle can be coole...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01D5/092
CPCD01D5/092
Inventor M·费希尔
Owner OERLIKON TEXTILE GMBH & CO KG
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