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Strange-shaped fibre processing technique and spinning jet used in the technique

A special-shaped fiber and processing technology, applied in the direction of fiber type, fiber treatment, fiber chemical characteristics, etc., can solve the problems of unfavorable comfort performance, affecting the abnormality of special-shaped fibers, and affecting fiber quality, etc., to improve friction performance and improve hygroscopic performance. , the effect of good fiber quality

Inactive Publication Date: 2009-05-13
GUANGDONG XINHUI MEIDA NYLON
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The special-shaped fiber is the fiber obtained after the cross-section is profiled. The fiber can give the fabric various performance advantages such as luster, bulkiness, hygroscopicity, elasticity and hand feeling. Therefore, the special-shaped fiber has been widely used. Now the special-shaped fiber that has appeared The section has triangular, trilobal, pentagonal, T-shaped, C-shaped, H-shaped, cross-shaped, flat and hollow special-shaped; the processing process of the common special-shaped fiber is generally that there are multiple special-shaped spinnerets on the spinneret plate. The cross section of the spinneret hole corresponds to the cross section of the fiber, that is, if the triangular special-shaped fiber is to be processed, the spinneret hole is triangular. When the polymer melt is ejected from the special-shaped spinneret hole, due to the Ballas effect (When the polymer melt is extruded from a small hole, capillary or slit, the diameter or thickness of the extrudate will be significantly larger than the diameter of the small hole, that is, extrusion swelling will occur), polymer melt Extrusion expansion will lead to obvious differences between the cross-sectional shape of the extruded fiber and the shape of the spinneret hole, and this difference will further affect the degree of special-shaped fiber, that is, the cross-sectional shape of the processed fiber will be different from the theoretical shape. difference, so that the quality of the processed fiber is affected
[0003] On the other hand, in the process of processing, it is necessary to add a second component with high hygroscopicity. Because the fiber itself can form certain hydrogen bonds through the polar groups on the polymer chain and water molecules, it will be beneficial The affinity for moisture and the capillary channel formed by the special-shaped structure realize the transfer of moisture; while the addition of the second component of high hygroscopic components will increase the retention rate of the fiber material to moisture, but this moisture due to hydrogen bonding It is difficult to escape from the surface of the fiber, especially the moisture that enters the capillary structure is even more difficult to escape, so this second component with high moisture absorption will have an adverse effect on the comfort performance of the product, and a better fiber modification method needs to be sought

Method used

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  • Strange-shaped fibre processing technique and spinning jet used in the technique
  • Strange-shaped fibre processing technique and spinning jet used in the technique
  • Strange-shaped fibre processing technique and spinning jet used in the technique

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Such as figure 1 , figure 2 As shown, a spinneret for special-shaped fiber processing has a plurality of spinneret holes 2 distributed on the plate body 1 to form a spinneret hole array, wherein each spinneret hole 2 includes at least two adjacent spray slits 3 ; Wherein, on a section perpendicular to the spinning direction, in each of the spinning holes 2, one side end 5 of each spraying slit 3 is close to each other, and the other side end 5 is far away from each other; In the hole 2, there are four injection slits 3 that are evenly arranged in the circumferential direction, so that the adjacent injection slits 3 are perpendicular to each other on the section perpendicular to the spinning direction.

[0029] In the present embodiment, the processing technology of special-shaped fiber comprises the following steps:

[0030] a. After being heated and pressurized, the polymer melt is sprayed out from the spray slits of the spinneret holes on the spinneret plate;

[0...

Embodiment 2

[0051] Such as image 3 As shown, the difference between this embodiment and Embodiment 1 is that, on the section perpendicular to the spinning direction, the side end 5 of the injection slit 3 is arc-shaped, and the parameters of the processing technology in this embodiment are:

[0052] 1. The concentration of the oil agent is 7%, and the contents of each component in the oil agent are:

[0053] Sorbitan monooleate 550g

[0054] Neopentyl Glycol Laurate Monoester 200g

[0055] Lauroylamine 220g

[0056] Silicate inorganic superfine powder 20g

[0057] Sodium Carboxymethyl Cellulose 10g

[0058] 2. Spinning speed: 3800(m / min);

[0059] 3. Stretch ratio: 1.25;

[0060] 4. Wind speed: 0.50 (m / min);

[0061] 5. Heat setting temperature 160(℃);

[0062] 6. The spinning temperature is 265(°C);

[0063] 7. The degree of fiber irregularity is 69%.

[0064] The shape degree and wicking height of the obtained shaped fibers are shown in Table 1.

Embodiment 3

[0066] Such as Figure 4 As shown, the difference between this embodiment and Embodiment 1 is that, on the section perpendicular to the spinning direction, in each of the spinning holes 2, the center positions of the side ends 5 of the spraying slits 3 that are close to each other A circular center spray hole 4 is provided. During the spinning process, the high polymer melt is ejected from the central nozzle hole 4 at the same time, and the high polymer melt ejected from each injection slit 3 is more conducive to bonding. The parameters of the processing technology described in this embodiment yes:

[0067] 1. The concentration of the oil agent is 7%, and the contents of each component in the oil agent are:

[0068] Polyoxyethylene(6) Sorbitan Glycerate 340g

[0069] Sorbitan Monooleate 290g

[0070] Neopentyl Glycol Laurate Monoester 200g

[0071] Lauroylamine 100g

[0072] Silicate inorganic superfine powder 35g

[0073] Alkyl dimethyl benzyl ammonium bromide 25g

[...

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Abstract

The invention belongs to the field of chemical fiber shaping, and discloses a technology for processing a profiled fiber and a spinneret plate used by the technology. The processing technology comprises the following steps: a. high polymer melts are spouted from spray slits of each spinneret orifice on the spinneret plate via heating and pressurizing; b. the high polymer melts spouted from the spray slits of each spinneret orifice expand because of Barus effect, and are spliced one another to form the profiled fiber; and c. the processed profiled fiber is oiled. The structure of the spinneret plate is as follows: a plurality of spinneret orifices are distributed on the plate body to form a spinneret orifice array, wherein each spinneret orifice comprises at least two immediate spray slits. The profiled fiber has excellent degree of profile, good performances such as silkiness, hydroscopic property.

Description

technical field [0001] The invention belongs to the field of chemical fiber molding, and in particular relates to a special-shaped fiber processing technology and a spinneret used in the technology. Background technique [0002] The special-shaped fiber is the fiber obtained after the cross-section is profiled. The fiber can give the fabric various performance advantages such as luster, bulkiness, hygroscopicity, elasticity and hand feeling. Therefore, the special-shaped fiber has been widely used. Now the special-shaped fiber that has appeared The section has triangular, trilobal, pentagonal, T-shaped, C-shaped, H-shaped, cross-shaped, flat and hollow special-shaped; the processing process of the common special-shaped fiber is generally that there are multiple special-shaped spinnerets on the spinneret plate. The cross section of the spinneret hole corresponds to the cross section of the fiber, that is, if the triangular special-shaped fiber is to be processed, the spinnere...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01D5/253D01D10/00D01D11/00D01F11/00D01F11/08D06M13/224D06M13/372D06M15/333D06M11/79D06M15/09D06M13/463D06M101/34
Inventor 梁广义严玉蓉郑文祥陈欣赵维钊黎明
Owner GUANGDONG XINHUI MEIDA NYLON
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