Method and apparatus for producing multifilament yarn

A technology of multifilament yarn and equipment, applied in the field of equipment for implementing the method, can solve the problems of reduced tensile strength, reduced yarn quality, etc.

Active Publication Date: 2021-03-09
OERLIKON TEXTILE GMBH & CO KG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At the same time, however, a decrease in tensile strength occurs, resulting in an overall lower yarn quality

Method used

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  • Method and apparatus for producing multifilament yarn
  • Method and apparatus for producing multifilament yarn
  • Method and apparatus for producing multifilament yarn

Examples

Experimental program
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Embodiment Construction

[0022] figure 1 A first exemplary embodiment of an apparatus according to the invention is schematically shown for carrying out the method according to the invention for producing multifilament yarns from polymer melts. The exemplary embodiment has a spinning arrangement 1 comprising a spinning beam 1.2 and a cooling device 1.5 arranged below the spinning beam 1.2. The spin beam 1.2 has on its underside a spinning nozzle 1.4 which is connected to a melt supply inlet 1.3 via a spinning pump (not shown here in more detail). The cooling device 1.5 forms a cooling channel 1.6 below the spinning nozzle 1.4. Cooling air is blown into the cooling channels 1.6, wherein the cooling air can be supplied as so-called cross-flow blowing or radially outside-to-inside blowing.

[0023] Arranged below the spinning device 1 is a polymerizing yarn guide 2 which is arranged concentrically to the spinning nozzle 1.4 and polymerizes a plurality of filaments 18 which have been extruded from the s...

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PUM

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Abstract

The invention relates to a method and a device for producing multifilament yarns from polymer melts. The freshly extruded filaments are initially cooled and polymerized to form yarn. In order to obtain an improved thermal shrinkage fixation of the yarn, the yarn is pretreated with a heated preparation fluid after being drawn off and relaxed by passing through a plurality of godet roll sets with several guide sleeves.

Description

technical field [0001] The invention relates to a method for producing multifilament yarns from polymer melts, and to a device for carrying out the method. Background technique [0002] The production of multifilament yarns from polymer melts is generally performed by melt spinning. Here, the melt previously produced from the polymer is fed under pressure to a spinneret, which extrudes the finest strands from a plurality of orifices. After the melt cools and solidifies, the extruded filaments are polymerized to form a yarn and the yarn is drawn. The yarn is then drawn and relaxed to obtain the desired physical properties. Especially when producing fully drawn yarns (FDY) which are fed directly to another treatment process after being produced, the shrinkage behavior is especially adjusted to the lowest possible values. Shrinkage is here understood to be the change (shortening) of the length of the yarn, initially due to the thermal or hydrothermal treatment of the yarn in...

Claims

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Application Information

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IPC IPC(8): D01D13/02D02J13/00D01D10/02
CPCD01D10/02D01D13/02D02J13/006
Inventor K·谢弗D·舒尔茨
Owner OERLIKON TEXTILE GMBH & CO KG
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