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Elastic polyester fibre and preparation method thereof

An elastic fiber, composite elastic fiber technology, applied in fiber processing, single-component polyester rayon, filament/thread forming and other directions, can solve the problems of unseen fiber composition, manufacturing process, description, etc. Good recovery, smooth cloth surface, soft hand feeling

Inactive Publication Date: 2008-02-20
ZHEJIANG HENGYI GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In recent years, Dupont has published a report on Lycra T-400 new elastic fiber, which has aroused widespread concern in the world's chemical fiber-textile industry, but there is no detailed description of the relevant fiber composition and manufacturing process.

Method used

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  • Elastic polyester fibre and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] The side-by-side composite elastic fiber uses two independent screws to melt two kinds of high polymers A which form the side-by-side composite fiber. 1 、A 2 , with a weight percentage of 30:70, which are transported to the spinning box through their respective melt pipelines, and then the melt is quantitatively sent to the side-by-side spinning assembly by the metering pump for extrusion, cooling, oiling, stretching, After shaping and winding, the finished side-by-side composite elastic fibers can be obtained, the cross-section of which is shown in Figure 1. The spinning temperature is 278-283°C, the winding speed is 2500 m / min, the side blowing wind speed is 0.28-0.35 m / s, the stretching temperature is 85-90°C, the setting temperature is 125-130°C, and the draw ratio is 2.5 to 3.5 times, the main indicators of FDY are shown in the attached table.

Embodiment 2

[0018] The side-by-side composite elastic fiber uses two independent screws to melt two kinds of high polymers A which form the side-by-side composite fiber. 1 、A 3 , whose weight percentage is 40:60, is transported to the spinning box through its own melt pipeline, and then the melt is quantitatively sent to the side-by-side spinning assembly by the metering pump for extrusion, cooling, oiling, stretching, After shaping and winding, the finished side-by-side composite elastic fiber can be obtained. The spinning temperature is 265-275°C, the winding speed is 1200 m / min, the side blowing wind speed is 0.25-0.30 m / s, the stretching temperature is 82-88°C, the setting temperature is 123-129°C, and the draw ratio is 3.5 to 4.0 times, the main indicators of the spun FDY are shown in the attached table.

Embodiment 3

[0020] The side-by-side composite elastic fiber uses two independent screws to melt two kinds of high polymers A which form the side-by-side composite fiber. 1 、A 4 , with a weight percentage of 50:50, which are transported to the spinning box through their respective melt pipelines, and then the melt is quantitatively sent to the side-by-side spinning assembly by the metering pump for extrusion, cooling, oiling, stretching, After shaping and winding, the finished side-by-side composite elastic fiber can be obtained. The spinning temperature is 267-276°C, the winding speed is 1800 m / min, the side blowing wind speed is 0.27-0.33 m / s, the stretching temperature is 83-88°C, the setting temperature is 123-128°C, and the draw ratio is 2.8~3.5 times, the spun FDY

[0021] See the attached table for the main indicators.

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Abstract

The invention relates to a springy polyester fiber and the preparing method. The technical problem of the invention to be solved is that the invention provides a springy fiber and the preparing method to make up the disadvantages of the capability of the spandex and the applying arrange. The springy fiber of the invention adopts the method of the compound filature and uses two screw extrusion machines to respectively melt the two components, and the product is obtained through the extrusion of the compound filature component. The invention is characterized in that the components of the springy fiber comprise two of the following high polymers which have heat shrinking capability difference: the high fasculation PETP, the PET, the PBT, the PTT with the weight proportion of 30-70:50.

Description

technical field [0001] The invention relates to the technical field of chemical fibers, in particular to an elastic polyester fiber and a preparation method thereof. Background technique [0002] Fiber materials are the basis of clothing fabrics, and the emergence of new fiber materials will bring about the emergence of a variety of new clothing fabrics, and will play a positive role in promoting the development of the fashion industry. This requires the design and development of new fibers and new fabrics to continuously provide new materials for the manufacture of new fashions. [0003] Spandex is an elastic fiber made of a polymer compound with a linear segment structure containing more than 85% polyurethane. Because of its light specific gravity, high breaking strength, high elongation at break, and good elastic recovery, it is widely used. However, spandex is not resistant to high temperatures. If post-dyeing is required in polyester fabrics with spandex, the dyeing a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01D5/32D01F6/62D02G1/18
Inventor 郭华成展秦庆才王国德崔恒海张守运
Owner ZHEJIANG HENGYI GRP CO LTD
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