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Preparation method for spinneret for manufacturing lyocell fiber

A spinneret and fiber technology, used in spinneret assemblies, textiles and papermaking, etc., can solve problems such as inability to produce Lyocell fibers

Active Publication Date: 2016-08-17
SHANGHAI PUDONG ZONE ZHANGJIANG CHEM FIBER MACHINERY PARTS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This spinneret can only be used to produce viscose fiber, not Lyocell fiber
However, the current spinneret preparation process cannot realize the formation of spinneret channels with a length-to-diameter ratio of 2:1 on a spinneret whose thickness is 4 to 5 times that of the tantalum alloy plate.

Method used

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  • Preparation method for spinneret for manufacturing lyocell fiber
  • Preparation method for spinneret for manufacturing lyocell fiber
  • Preparation method for spinneret for manufacturing lyocell fiber

Examples

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Embodiment Construction

[0049] The present invention is used to manufacture the preparation method of the spinneret of Lyocell fiber, and described spinneret comprises spinneret and base; As figure 1 As shown, the spinning plate is a stainless steel plate with a thickness L of 1.2 to 1.5 mm, and the stainless steel plate is distributed along its length direction with multiple ( figure 1 There are 9) cloth hole area A; such as figure 2 As shown, a plurality of spinneret holes 10 are densely distributed in the hole arrangement area A, and the spinneret holes 10 extend along the thickness direction of the stainless steel plate; more than 10,000 spinneret holes 10 are distributed on a stainless steel plate with an area of ​​about 5000 square millimeters;

[0050] Such as image 3 As shown, the spinneret hole 10 includes a slurry holding part 1 and a thread forming part 2 (i.e. a spinneret channel), and the slurry holding part 1 communicates with the thread forming part 2 and is positioned at the top of...

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Abstract

The invention discloses a method for manufacturing a spinneret plate for making Lyocell fibers. The method comprises the following steps of blanking and forming, the first time of punching, the second time of punching, the third time of punching and welding. By means of the method, spinneret holes with the diameter being 0.04-0.20 mm can be punched in a stainless steel plate with the thickness being 1.2-1.5 mm, the number of the holes is 7500 to 35000, and the thickness of the manufactured spinneret plate is 4-5 times that of a conventional tantalum spinneret plate.

Description

technical field [0001] The invention relates to a method for preparing a spinneret, in particular to a method for preparing a spinneret for manufacturing Lyocell fibers. Background technique [0002] Lyocell (Lyocell) fiber is a new type of regenerated cellulose fiber. It has both the characteristics of viscose fiber and the strength of synthetic fiber. It is known as a green and environmentally friendly fiber because of its pollution-free production process. [0003] The production process of Lyocell fiber involves three key processes, namely dissolving, spinning and solvent recovery. The dissolving process is to dissolve the chopped pulp in N-methylmorpholine-N-oxide (NMMO) solvent to form a raw pulp; the spinning process is to make the raw pulp pass through the spinneret holes of the spinneret to form filaments The solvent recovery process is to dissolve the solvent on the filaments in water, then stretch, cut, and wash the filaments to fully clean the solvent on the fib...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23P15/16D01D4/02
CPCB23P15/16D01D4/022
Inventor 顾利民姚润悌朱华
Owner SHANGHAI PUDONG ZONE ZHANGJIANG CHEM FIBER MACHINERY PARTS