A process for the production and for the winding of polyester multi-filament yarns as well as the polyester multi-filament yarns obtainable by said method and a device for the winding of one or more m

A polyester multifilament and yarn technology, applied in the direction of single-component polyester artificial filament, transportation and packaging, heat treatment of artificial filament, etc., can solve the problems of heat treatment of undisclosed yarn packages

Inactive Publication Date: 2005-06-22
ZIMMER GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the prior art, the heat treatment of yarn pa

Method used

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  • A process for the production and for the winding of polyester multi-filament yarns as well as the polyester multi-filament yarns obtainable by said method and a device for the winding of one or more m
  • A process for the production and for the winding of polyester multi-filament yarns as well as the polyester multi-filament yarns obtainable by said method and a device for the winding of one or more m
  • A process for the production and for the winding of polyester multi-filament yarns as well as the polyester multi-filament yarns obtainable by said method and a device for the winding of one or more m

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0084] The intrinsic viscosity is 0.94dl / g, the crystallization temperature is 72 ℃, and the Corterra-type crystalline PTMT chip (Shell Oil Company (USA)) that the glass transition temperature is 45 ℃ is in a tumble drier at the temperature of 130 ℃. Dried to a moisture content of 11 ppm. The chips were melted in a 3E4 extruder produced by Barmag such that the temperature of the melt was equal to 254°C. Then the melt is transported to the spinning pump through a production line, and fed into a spinning pump, wherein the throughput of the melt to the spinning assembly is controlled to be 76.1 g / min. The melt was extruded through a spinneret with a diameter of 80 mm and 48 holes with a diameter of 0.25 mm and a length of 0.75 mm. The nozzle pressure is equal to about 120 bar.

[0085] Subsequently, the filaments were cooled in an air shaft with a cross-flow quenching system with a length of 1500 mm. The velocity of the cooling air is 0.55 m / s, the temperature is 18° C. and th...

example 2 and 3

[0097] Example 1 was repeated, except that the throughput of the melt was varied. Additionally, the heated rolls were replaced with a pair of unheated S-set godet rolls. Similar to Example 1, the multifilament yarn was wound on a winder of type SW6 (BARMAG (Germany)); wherein the bobbin carrying the yarn package fixed on the mandrel of the winder was enclosed in a housing , the housing has a slit-like opening for the multifilament yarn. The temperature in the enclosure was 63°C, which was controlled by the supply of hot air, wherein the amount of heated air supplied into the enclosure matched the amount of air exhausted. The indoor climate was set at a temperature of 24°C and a relative humidity of 60%. The exact settings for Examples 2 and 3 are listed in Table 3.

[0098] Example 2

[0099] With the method according to the invention, a package of yarn in the form of a cheese has been obtained which can be removed from the chuck without problems. A part of the...

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Abstract

The invention relates to a method for producing and winding at least one polybutylene terephthalate (PBT) and/or polyterephthalic acid in an amount of at least 90% by weight relative to the total weight of polyester multifilament yarns Process for polyester multifilament yarns of propylene glycol ester (PTMT), preferably PTMT, in order to provide at least one yarn package with long-term stability during storage and insensitivity to high temperatures during storage and transport, wherein the The wound package of at least one polyester multifilament yarn is heat treated at a temperature in the range >45°C to 65°C. Furthermore, the invention relates to said polyester multifilament yarn obtainable by said process, wherein its elongation at break is in the range >60 to 145% and its boiling shrinkage is in the range 0 to 10% . Finally, the invention also claims a device (2) for winding one and several multifilament yarns (26), comprising a housing (4) and a rotatable mandrel, in which A bobbin (30) can be fixed on the shaft so that the bobbin (30) is located in the housing (4), wherein the interior of the housing (4) is heatable.

Description

technical field [0001] The present invention relates to a method for spinning and winding polyester multifilament yarns composed of at least 90% by weight (percentage by weight) of polyterephthalic acid relative to the total weight of polyester filaments Butylene glycol ester (PBT) and / or polytrimethylene terephthalate (PTMT) and preferably PTMT composition, and relate to polyester multifilament yarn obtainable in this way and a kind of for winding one or more Device for plying multifilament yarns. Background technique [0002] The production of continuous polyester multifilament yarns, especially polyethylene terephthalate (PET) multifilament yarns, in a one-two-step process is well known. In this method, a multifilament yarn is spun and wound in a first step, and in a second step, the multifilament yarn is drawn into its final shape and heat-set, or stretch-textured, into a bulked multifilament yarn. silk yarn. Between these two steps, the packages of multifilament yarn...

Claims

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Application Information

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IPC IPC(8): B65H55/00D01D7/00D01D10/02D01F6/62
CPCD01D10/02D01F6/62
Inventor U·米尔瓦尔德特E·赛德尔D·万德尔
Owner ZIMMER GMBH
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