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A kind of production process of fine denier viscose staple fiber

A technology for viscose staple fiber and production process, which is applied in the production process of viscose staple fiber and the production process of fine denier viscose staple fiber, can solve the problem that the crystallization zone of fine denier viscose staple fiber cannot be well formed and drawn Problems such as poor control of process draft rate and inability of fiber strength to meet the index, achieve the effect of reducing the probability of occurrence, improving the strength index, and improving the spinnability of spinning

Inactive Publication Date: 2016-01-20
YIBIN GRACE +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0014] The purpose of the present invention is to solve the problem that the draft rate control of the drafting process in the above-mentioned prior art is not good, resulting in that the crystallization area in the fine-denier viscose staple fiber cannot be well formed, and the fiber strength cannot reach the target. It provides a fine-denier The production process of viscose fiber can make the crystallization area in the fiber can be formed quickly and with high quality in the production process of fine-denier viscose staple fiber, ensuring the strength of the final fine-denier staple fiber

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Total drafting rate: 130%; spinneret drafting rate: 60%; air drafting rate: 35.65%; plasticizing drafting rate: 6%.

Embodiment 2

[0039] On the basis of embodiment 1, preferred:

[0040] In the described step of preparing the viscose spinning stock solution, the index of the viscose raw material used is: the number of viscose particles is 800 / ml; the viscose particle diameter is 11 μm; the viscosity is 45 seconds; The temperature is 9 ml; the temperature is 16°C; the methylcellulose content is 8.9%; the alkali content is 4.4%.

[0041] In the spinning step, a spinneret is used for spinning, and the surface diameter of the spinneret is ∮16mm.

[0042] The spinneret is provided with spinneret holes, and the number of the spinneret holes is 2100 per spinneret; the pitch of the spinneret holes is 0.25mm; the diameter of the spinneret holes is 0.045mm.

[0043] The filament forming step is formed by an acid bath, and the sulfuric acid content in the acid bath is 110 g / L; the sodium sulfate content is 300 g / L; the zinc sulfate content is 9 g / L; the aluminum sulfate content is 2 g / L; the temperature is contr...

Embodiment 3

[0047] On the basis of embodiment 1, preferred:

[0048] In the step of preparing the viscose spinning stock solution, the index of the viscose raw material used is: the number of viscose particles is 1500 / ml; the particle size of the viscose is 50 μm; the viscosity is 55 seconds; The temperature is 11 ml; the temperature is 20°C; the methylcellulose content is 9.1%; the alkali content is 4.6%.

[0049] In the spinning step, a spinneret is used for spinning, and the surface diameter of the spinneret is ∮16mm.

[0050] The spinneret is provided with spinneret holes, and the number of the spinneret holes is 2200 per spinneret; the pitch of the spinneret holes is 2.25 mm; the diameter of the spinneret holes is 0.05 mm.

[0051] The described filament forming step adopts acid bath forming, and the sulfuric acid content in the described acid bath is 115 grams / liter; The sodium sulfate content is 320 grams / liter; The zinc sulfate content is 11 grams / liter; The aluminum sulfate cont...

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PUM

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Abstract

The invention relates to a production process of fine denier viscose staple fiber, belonging to the technical field of viscose staple fiber production. In the spinning step of the present invention, the shaped sliver is guided and drawn through the guide wire device and the drafting device, and in the process of guide wire and draft, the total draft rate is controlled to be 130-160%, wherein: The spinneret draft rate is controlled at 60-80%; the air draft rate is controlled at 25-40%; the plasticizing draft rate is controlled at 5-12%. The selection of the total draft ratio and the distribution of various draft ratios ensures that the fine-denier viscose staple fiber is conducive to the orderly arrangement of cellulose macromolecules in the plastic state during the spinning and forming process, and is conducive to the formation of crystallization regions in the fiber. Fast and high-quality formation ensures better strength index of fine viscose staple fibers.

Description

technical field [0001] The invention relates to a production process of viscose staple fiber, more specifically, the invention relates to a production process of fine denier viscose staple fiber, which belongs to the technical field of viscose staple fiber production. Background technique [0002] The application field of viscose staple fiber is getting wider and wider, and its application in the most widely used fields of spinning, weaving and non-woven fabrics is getting deeper and deeper. For example, in spinning enterprises, in order to expand the new functions of their downstream products, they have developed More adaptable to market demand - softer, softer and smoother products, the finer and finer requirements for viscose staple fiber are required. At present, the conventional products of viscose staple fiber are mainly 1.5D and 1.2D, and there is a small amount of 1D. The production method and technology of viscose staple fiber with a fine denier of 0.8-1D still need...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01D5/12D01D11/04
Inventor 邓传东李荣玲贺敏范贤珍陈晓芳胡远杰
Owner YIBIN GRACE
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