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Glass spinneret and fabricating method

A spinneret and glass technology, applied in the direction of spinneret assemblies, textiles and papermaking, etc., can solve problems such as unfavorable spinning speed, affecting spinning forming quality, melt fracture, etc.

Inactive Publication Date: 2007-03-21
SHANGHAI INST OF CERAMIC CHEM & TECH CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This is because the spinning slurry is in the flow state of being squeezed and restricted in the micropores of the spinneret (plate), and after flowing out of the micropores into the space, it becomes a free stream and is stretched by the subsequent process. In this way, there is a "puffing phenomenon" in the exit area of ​​the spinneret (plate). When the puffing is serious, "melt fracture" will occur. At this time, the surface of the filament is not smooth, which seriously affects the quality of spinning and is not conducive to spinning. speed increase

Method used

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  • Glass spinneret and fabricating method
  • Glass spinneret and fabricating method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] The glass spinneret is composed of a hat-shaped metal shell 1 and a glass spinneret 2 with spinneret holes embedded in the bottom, and the metal shell 1 and the glass spinneret 2 are sealed and fixed with an organic adhesive 3 . There are spinneret holes 4 on the glass spinneret 2, the number of spinneret holes is 3000 holes, the hole diameter is 65 microns, the hole distance is 330-450 microns, and the hole diameters are distributed in the circumference area not larger than the diameter of 22 mm. In order to meet the working pressure of chemical fiber spinning, and according to the requirement of the length-to-diameter ratio of the spinneret hole, the glass spinneret 2 is made into a spherical glass sheet with equal thickness. The surface is a concave spherical surface, the radius of curvature of the concave spherical surface is 90 mm, the curvature radius of the convex spherical surface is 91.4 mm, and the thickness of the glass spinneret is 2 mm. The glass spinneret ...

Embodiment 2

[0013] Embodiment 2 Its main parameters are listed in Table 1, except that the cross section of the embedded metal wire is rectangular, thereby forming a spinneret hole with a rectangular cross section, and the rest are the same as in Embodiment 1.

[0014] spinneret

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Abstract

A glass spinning nozzle is composed of glass spinning plate having spinning orifices on and hat metal shell, of which the compressed inner surface of glass spinning plate is convex spherical surface and its filament outgoing face is concave spherical surface. The thickness of glass spinning nozzle is 1.4-2 mm, its length-diameter ratio is 20:1 to 30:1 and it can stand operation pressure of 1.2-1.5 MPa.

Description

technical field [0001] The invention relates to a glass spinneret and its manufacturing method, more precisely to a glass spinneret for textile fiber production with high aspect ratio made of common optical glass and its manufacturing method. It belongs to the field of textile components. Background technique [0002] As we all know, the glass spinneret is composed of a glass spinneret with spinneret holes and a cap-shaped metal shell. The inner surface of the glass spinneret under pressure is a convex spherical surface, and the surface of the outlet is a concave spherical surface. The glass spinneret is suitable for wet chemical fiber spinning such as viscose fiber spinning and solvent spinning, and can replace gold-platinum alloy metal spinnerets and tantalum metal spinnerets. Chemical fiber spinning is divided into melt spinning and wet spinning, and viscose fiber spinning and solvent spinning are all wet spinning. Previous wet spinning spinnerets used metal spinnerets,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01D4/02
Inventor 高建平项海波卞蓓亚
Owner SHANGHAI INST OF CERAMIC CHEM & TECH CHINESE ACAD OF SCI
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