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A kind of chemical fiber ring blowing cooling method

A cooling method and chemical fiber technology, applied in fiber processing, textiles and papermaking, filament/thread forming, etc., can solve the problems of slow solidification of spinning liquid, affecting spinning quality, and easy sticking of filaments, etc., to achieve uniformity And the effect of rapid cooling, improving environmental health, and high uniform energy consumption

Active Publication Date: 2018-04-27
WUJIANG AOMING SPINNING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In the process of realizing the present invention, the inventors found that the number of holes in dry spinning is far less than that in wet spinning. The main reason is that the fine flow of spinning solution solidifies slowly, and the filaments are easy to stick before solidification, which seriously affects the spinning quality.

Method used

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  • A kind of chemical fiber ring blowing cooling method

Examples

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Effect test

Embodiment 1

[0052] A chemical fiber ring blowing cooling method described in this embodiment is to cool and solidify the thin flow of liquid chemical fiber raw materials extruded from the spinneret assembly 1, the spinning temperature is 275°C, the spinning speed is 2900m / min, and the ring blowing cooling molding includes: Three continuous cooling zones from top to bottom: the first cooling zone, the second cooling zone and the third cooling zone.

[0053] The first cooling zone: it is the air upflow cooling zone, including the first ring air pipe 201 and the exhaust ring 202, the angle of the air outlet D of the first ring air pipe is upward 10°, that is, the wind direction of the air outlet D of the first ring air pipe The angle with the horizontal plane is 10°. The exhaust ring 202 is located between the spinneret assembly 1 and the first ring air pipe 201, the temperature of the air outlet from the first ring air pipe is 23°C, the wind speed is 0.294m / s, and the air humidity is 80%. ...

Embodiment 2

[0059] A chemical fiber ring blowing cooling method described in this embodiment is to cool and solidify the thin stream of liquid chemical fiber raw material extruded from the spinneret assembly 1, the spinning temperature is 275°C, the spinning speed is 2800m / min, and the ring blowing cooling molding includes: Three continuous cooling zones from top to bottom: the first cooling zone, the second cooling zone and the third cooling zone.

[0060] The first cooling zone: it is the air upflow cooling zone, including the first ring air duct 201 and the exhaust ring 202, the angle of the air outlet D of the first ring air duct is upward 25°, that is, the wind direction of the air outlet D of the first ring air duct The angle with the horizontal plane is 25°. The air exhaust ring 202 is located between the spinneret assembly 1 and the first ring air duct 201. The air outlet temperature of the first ring air duct is 22° C., the wind speed is 0.32 m / s, and the air humidity is 81%. Th...

Embodiment 3

[0066] A chemical fiber ring blowing cooling method described in this embodiment is to cool and solidify the thin flow of liquid chemical fiber raw materials extruded from the spinneret assembly 1, the spinning temperature is 275°C, the spinning speed is 2900m / min, and the ring blowing cooling molding includes: Three continuous cooling zones from top to bottom: the first cooling zone, the second cooling zone and the third cooling zone.

[0067] The first cooling zone: it is the air upflow cooling zone, including the first ring air duct 201 and the exhaust ring 202, the angle of the air outlet D of the first ring air duct is upward 15°, that is, the wind direction of the air outlet D of the first ring air duct The angle with the horizontal plane is 15°. The air exhaust ring 202 is located between the spinneret assembly 1 and the first ring air pipe 201, the air outlet temperature of the first ring air pipe is 23° C., the wind speed is 0.30 m / s, and the air humidity is 80%. The...

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Abstract

The invention discloses a chemical fiber circular blow cooling method. The method comprises the step of cooling and freezing trickle of a liquid chemical fiber raw material squeezed out by a spinning pack, wherein the spinning temperature is 270 to 280 DEG C, the spinning speed is 2700 to 3000m / min, and circular blow cooling moulding comprises three continuous cooling areas from top to down: a first cooling area, a second cooling area and a third cooling area, and the total height of a first bustle pipe, a second bustle pipe and a third bustle pipe is 130 to 150mm. The chemical fiber circular blow cooling method provided by the invention adopts a three-section circular blow cooling technology, so that the control on speed, temperature and humidity is more convenient, the spinning cooling speed is more even and faster, and strands before freezing are not liable to adhere. In the three-section circular blow cooling technology, the directions of wind of all the sections are different, so that air in a ring cavity is more uniform, the heat exchange between spinning and the air is more uniform, and the cooling effect is more balanced.

Description

technical field [0001] The invention belongs to the field of chemical fiber production, and relates to a cooling method for chemical fibers, in particular to a ring blowing cooling method. Background technique [0002] In the present invention, the term "chemical fiber" is an abbreviation of chemical fiber. Chemical fibers are fibers with textile properties that are made from natural polymer compounds or artificially synthesized polymer compounds through the processes of preparing spinning dope, spinning and post-treatment. Chemical fibers are divided into two categories: man-made fibers and synthetic fibers: ① man-made fibers, chemical fibers made of natural polymer compounds (such as cellulose), such as viscose fibers and acetate fibers. ② Synthetic fibers, chemical fibers made from artificially synthesized polymer compounds, such as polyester fibers, polyamide fibers, and polyendene nitrile fibers. Chemical fiber has the advantages of high strength, wear resistance, low...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01D5/092
CPCD01D5/092
Inventor 苏祖伟
Owner WUJIANG AOMING SPINNING
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