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Technique for producing polyester filament yarn using false twisting distortion elasticizer

A technology of false twist texturing and polyester filament, applied in textiles and papermaking, etc., can solve the problems of insufficient hand feeling, short heating distance and time of coarse denier, unfavorable and uniform stretching, etc., to achieve flexible and convenient switching and expand the scope of use , the effect of significant economic benefits

Active Publication Date: 2008-08-27
杭州逸暻化纤有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, compared with natural fiber fabrics such as cotton, polyester fabrics have poor hygroscopicity, moisture retention, and air permeability, and are easy to wear next to the skin and have a stuffy feeling. Improvement and the improvement of visual aesthetics are particularly important. Various functional types and differentiated products are constantly emerging. The embodiment of the differentiated functionality of most of the products requires polyester fibers to have better shape or hollowness. Good shape retention effect can meet the functional requirements of clothing fabrics
The structure of the flat drawing machine in the prior art determines that due to the short heating distance and time, the coarse denier yarn is unevenly and insufficiently heated, which is not conducive to uniform stretching, and the product is prone to uneven heat and humidity shrinkage, and the fabric size is unstable, and the hand feel not good enough
[0003] False twist texturing machines are usually only used to produce false twist textured yarns, which cannot guarantee fidelity properties such as the degree of profile and hollowness of the finished product, and it is difficult to produce FDY products
It is used to produce the above-mentioned fully drawn yarn FDY or the process for polyester fiber filaments with high shape retention requirements such as degree of shape and hollowness, and no relevant or similar reports have been found in Chinese patent documents

Method used

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  • Technique for producing polyester filament yarn using false twisting distortion elasticizer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Example 1 - FDY process for producing fully drawn filaments, only stretching deformation, no false twist deformation.

[0018] The process flow is shown in Figure 1 (without false twister 6): processed raw polyester pre-oriented yarn (POY) → one roller 1 → hot box inlet guide 2 → one hot box 3 (non-contact heating) → turning guide wire Device 5→Two rollers 7→Network nozzle 8→Two heat boxes 9→Three rollers→Tanker→winding forming to obtain FDY. The exit wire guide 4 is empty.

[0019] Specifically: polyester pre-oriented yarn 630dtex / 96fPOY is fed from the original yarn frame through the yarn guide tube to a roller 1 through the hot box inlet yarn guide 2 into a hot box 3 After non-contact heating, it enters the second roller through a turning yarn guide 5 7. It is stretched and deformed between the first roller and the second roller, networked by the network nozzle 8, and then entered into the second heat box 9 for heat setting, oiling the tanker, and winding. Among th...

Embodiment 2

[0020] Example 2 - FDY process for producing fully drawn yarn, only stretching deformation, no false twist deformation.

[0021] Its technological process is the same as above. Specifically, the polyester pre-oriented yarn 85dtex / 48fPOY is fed from the original yarn frame through the yarn guide tube to a roller 1 through the hot box inlet guide 2 into a hot box 3 after non-contact heating, and then enters the second roller through the turning guide 5. 7. The first roller 1 and the second roller 7 are stretched and deformed, and are bundled by the network nozzle 8, and then the second heat box 9 is heat-set, the oil tanker is oiled, and the winding is formed. Among them, vehicle speed: 650m / min; stretching ratio: 1.75; network air pressure: 1.20kgf / cm 2 ; Second overfeed: 4.50%; Third overfeed: 7.20%; First hot box temperature: 82°C; Second hot box temperature: 120°C to obtain 50D / 48F FDY finished products.

Embodiment 3

[0022] Example 3—Production of polyester fiber filaments with high requirements for shape-retaining properties such as irregularity and hollowness

[0023] The process flow is shown in Figure 2 (with false twister 6), the raw material to be processed is hollow iso-shaped polyester pre-oriented yarn (POY) → a roller 1 → a hot box inlet guide 2 → a hot box 3 (non-contact heating) → Turning yarn guide 5 → False twister 6 (low false twist deformation) → Two rollers 7 → Network nozzle 8 → Two heat boxes 9 → Three rollers → Oil tanker → Winding molding, to obtain polyester hollow with high fidelity performance, etc. Low-elasticity mesh wire with special-shaped section. The exit wire guide 4 is empty.

[0024] Specifically, the polyester pre-oriented yarn 265dtex / 24f cross hollow POY is fed from the original yarn frame through the yarn guide tube into a roller 1 through the hot box inlet yarn guide 2 into a hot box 3 for non-contact heating, and then through the turning yarn guide 5...

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Abstract

The invention relates to a process for manufacturing polyester fiber filament by using a false twisting deformation elastic-adding machine, which is characterized in that raw material strand silk which is from a roller (1) passes through an inlet silk guide (2), then directly passes through a hot box(3) and is heated by the mode of non-contact heating, then moves to a turning silk guide (5), (or passes through a twisting machine 6), then passes through a two-roller (7) and reaches to a network jet nozzle (8) and is manufactured to obtain fully drawn yarn FDY (or shape preserving performances with high requirements such as profile degree, degree of hollowness and the like) polyester fiber filament, The process has the advantages of without altering the device, simple process adjustment and the like, and the switching of the two product processes is flexible and convenient, and the process efficiently extends the using range of the false twisting deformation elastic-adding machine and has obvious economic benefits.

Description

technical field [0001] The invention relates to a method for producing polyester filaments, in particular to a process for producing polyester filaments using a false-twist texturing machine. Background technique [0002] Polyester chemical fiber filament is a kind of clothing fabric raw material used in daily life. The biggest advantage of its fabric is that it has good wrinkle resistance and shape retention, and is suitable for outerwear. However, compared with natural fiber fabrics such as cotton, polyester fabrics have poor hygroscopicity, moisture retention and air permeability, and are easy to wear and feel stuffy. With the development of society, chemical fiber technology and people's living standards are improving day by day. The improvement and the improvement of its visual aesthetics are particularly important. Various functional and differentiated products are constantly emerging. The embodiment of the differentiated functionality of most of the products requires...

Claims

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Application Information

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IPC IPC(8): D02J1/22D02J1/08D02G1/02
Inventor 张守运
Owner 杭州逸暻化纤有限公司
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