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Spinnerets for high-speed dry spinning

A technology of dry spinning and spinneret, which is applied in the direction of spinneret assemblies, textiles and papermaking, and filament forming treatment, etc. It can solve problems such as skewed filaments, broken ends, and coagulated filaments, and the quality achieved is stable and reliable. , improve stability and long service life

Active Publication Date: 2016-04-13
NANTONG CELLULOSE FIBERS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] Purpose of the invention: the present invention aims to provide a spinneret for high-speed dry spinning to solve problems such as skewed filaments, coagulated filaments and broken ends that occur in the high-speed spinning process of man-made fibers such as acetate fibers, so as to improve the spinning efficiency. Wire speed and quality

Method used

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  • Spinnerets for high-speed dry spinning
  • Spinnerets for high-speed dry spinning

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Such as figure 1 The spinneret of the high-speed dry spinning shown above contains a ring-shaped fixed gasket 2 from top to bottom, a multi-layer filter cloth composed of a layer of flannel 4 and three consecutive layers of high-density nylon fabric 5, Conical deflector 10, special-shaped spinneret.

[0026] The special-shaped spinneret has horizontal folds 6, vertical folds 7, spinneret body 8, and spinneret body 8 has multiple spinneret holes; the number of spinneret holes is 1000, and the spinneret holes are distributed in 20 On the circumference of the concentric circles, the density of the spinneret holes on the inner circle is sequentially greater than the density of the spinneret holes on the outer circle.

[0027] The inner side of the conical deflector 10 is in the shape of an inverted truncated cone, and the outer side is a cylindrical shape 12 with a ring-shaped flash 11; The sum of the thickness of the thickness of the spinneret horizontal fold 6, the widt...

Embodiment 2

[0030] Such as figure 2 The spinneret of the high-speed dry spinning shown in the figure contains, from top to bottom, an annular fixed gasket 2, multi-layer filter cloth, a conical deflector 100 with an inner convex arc surface, and a special-shaped spinneret. The spinneret shell 3 surrounds the lower end 1 of the inlet device of the spinning solution, the fixed gasket 2, the multi-layer filter cloth, the conical deflector 100 with the inner convex arc surface, and the special-shaped spinneret inside and fixes it.

[0031] The special-shaped spinneret has horizontal folds 6, vertical folds 7, and a spinneret body 8. There are multiple spinneret holes on the spinneret body 8; the number of spinneret holes is 1500, and the middle of the spinneret body 8 The density of the spinneret holes is greater than that of the surrounding spinneret holes, and the spinneret holes are distributed on the circumference of 25 concentric circles, and the density of the spinneret holes in the in...

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Abstract

The invention discloses a spinning nozzle for high speed dry spinning. The spinning nozzle for high speed dry spinning comprises an annular retaining washer, multiple layers of filter cloth, a deflector and a special-shaped spinning plate from top to bottom, wherein the lower end of a spinning liquid inlet device, the retaining washer, the multiple layers of filter cloth, the deflector and the special-shaped spinning plate are surrounded on the inner side of a spinning nozzle shell and fixed. The multiple layers of filter cloth can be formed by a layer of flannel and three continuous layers of high-density nylon fabric; the special-shaped spinning plate is provided with a horizontal folding edge, a perpendicular folding edge and a spinning plate body, and a plurality of spinning holes are formed in the spinning plate body; the number of the spinning holes ranges from 200 to 2000, and the density of the spinning holes close to the center is larger than that of the spinning holes in the periphery; the inner side of the deflector is in the shape of the side face of an inverted circular truncated cone body, and the outer side of the deflector is in the shape of a cylindrical surface of a cylinder with annular flanges; the vertex angle of the circular truncated cone ranges from 20 degrees to 30 degrees. The local density and the number of the spinning holes of the spinning nozzle for high speed dry spinning are increased, the spinning speed and the productivity are greatly increased, the pressure of spinning liquid in the spinning nozzle is evenly and stably distributed, the stability is improved in the spinning process, and the spinning quality is improved.

Description

technical field [0001] The present invention relates to a spinnerette for the manufacture of man-made fibers in the chemical or textile industry. Background technique [0002] At present, domestic spinnerets for chemical fiber spinning such as cellulose diacetate tow dry spinning basically rely on imports, which are not only expensive, but also rely on foreign technology for the design and processing of spinnerettes, which has a great impact on reducing Production costs, increased spinning speed, and increased production capacity have all formed constraints. Moreover, the average production speed of diacetate fiber for tobacco is lower than 700m / min, and the quality of the acetate fiber produced at this speed is guaranteed, and the end-break rate is low. When the spinning speed is increased to more than 700m / min, there will be problems such as skewed filaments, coagulated filaments, paste caps, and a greatly increased yarn breakage rate in the spinning process. In addition...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01D4/00D01D4/02D01D4/06D01D1/10
Inventor 张丽杨爱军宋敏峰杨占平徐坦曹建华黄骅李有为何吉欢陈柔羲
Owner NANTONG CELLULOSE FIBERS CO LTD