Unlock instant, AI-driven research and patent intelligence for your innovation.

Method for preparing spandex fibers suitable for high-speed unwinding field

A technology in the field of spandex fiber, which is applied in the field of preparation of low-stress fine denier (below 20D) spandex yarn and spandex fiber. Relaxation effect

Active Publication Date: 2012-10-03
ZHEJIANG KAIPUTE SPANDEX
View PDF3 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the low-stress spandex fine denier yarn below 20D produced by other spandex manufacturers in China cannot meet the requirements of the covered yarn machine with an unwinding speed of more than 300 m / min.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] In the polymerization section, the unwinding agent magnesium stearate is added to the polymer, the particle size of magnesium stearate is between 0.3 and 2 μm, and the addition amount is 0.5 to 0.8%, which is used to improve the unwinding and unwinding of the spandex polymer . In the oiling section, use silicone oil containing magnesium stearate, the magnesium stearate content is 0.5% to 1.5%, and the oiling rate is controlled at 4% to 6%; in the winding section, the pre-drawing is at 0.9 to 1.1 , the connection pressure is 12-15Kg, and the other adopts the conventional spinning process conditions. According to the above process conditions, 20D low stress fine denier spandex yarn is produced.

Embodiment 2

[0018] In the polymerization section, the release agent magnesium stearate is added to the polymer, the average particle size is 5 μm, and the addition amount is 0.1% to 0.5%; in the oiling section, silicone oil containing magnesium stearate, stearin Magnesium acid chooses transparent liquid magnesium stearate, which has better dispersibility, and the produced fine-denier spandex yarn has better unwinding properties. The content of magnesium stearate is 0.8% to 1.2%, and the oiling rate is controlled at 4% to 5%. , In the winding section, the pre-drawing is 0.9-1.1, the contact pressure is 12-15Kg, and other conventional spinning conditions are adopted. According to the above process conditions, 20D low stress fine denier spandex yarn is produced.

Embodiment 3

[0020] In the polymerization section, the release agent magnesium stearate is added to the polymer, the average particle size is 5 μm, and the addition amount is 0.1% to 0.5%; in the oiling section, silicone oil containing magnesium stearate, stearin Magnesium acid content is 0.5% to 1.5%, and the oiling rate is controlled at 4% to 6%. In the winding section, since the winding pre-drawing and winding pressure directly affect the winding density of the fine-denier spandex yarn, it is To ensure the unwinding and unwinding properties of fine-denier spandex, a lower pre-drawing of 0.9-0.95 is used in this embodiment, and at the same time, the connection pressure is selected at 10-12 Kg; other conventional spinning process conditions are used. According to the above process conditions, 20D low stress fine denier spandex yarn is produced.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
particle diameteraaaaaaaaaa
particle diameteraaaaaaaaaa
Login to View More

Abstract

The invention discloses a method for preparing spandex fibers suitable for a high-speed unwinding field, which is suitable for preparing low-stress fine-denier spandex filaments. The method is characterized by comprising the following steps of: (1) polymerization: adding an unwinding agent, namely magnesium stearate, in a polymer, wherein the mass content of magnesium stearate in the polymer is 0.1-1.5%, the particle size of magnesium stearate is 0.3-5 mum; (2) spinning: in an oiling working procedure, selecting an organic silicon oil as an oily agent, and adding magnesium stearate in the organic silicon oil, wherein the mass percent content of magnesium stearate is 0.1-1.5%, the oiling rate is 4-6%; and in a pre-drawing working procedure, the pre-drawing rate is 0.8-1.1, and the contact pressure is 10-15 Kg. The low-stress fine-denier spandex filaments, prepared according to the method disclosed by the invention, have an excellent unwinding property.

Description

Technical field: [0001] The invention relates to a method for preparing spandex fiber suitable for high-speed unwinding field, which is mainly applied to the preparation of low-stress fine denier (below 20D) spandex yarn and belongs to the field of textile technology. technical background: [0002] Spandex is a special textile fiber, which has been widely used in various covered yarn fields. At present, the wrapping speed of ordinary covered yarn machines in China is usually 400-600 m / min, and the draft ratio of spandex is usually between 2.5-4.0, so that the unwinding speed of spandex yarn is 100-240 m / min. The unwinding property of denier spandex yarn can meet the requirement of unwinding speed. With the improvement of the performance and efficiency of the covered yarn machine, the yarn covering speed of the new covered yarn machine has been increased to 600-1200 m / min. Dropped to between 2.0-3.5, the unwinding speed of spandex yarn increased to 170-600 m / min, which grea...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): D01F6/94D01F1/10D01F11/08D01D5/096D01D5/12
Inventor 徐爱军吕柏松王子成
Owner ZHEJIANG KAIPUTE SPANDEX