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Acrylic shrinkable fiber

A shrinkage, acrylic technology, applied in the field of fleece fabric products, can solve the problems of not being able to obtain fleece fabric products with excellent appearance, difficulty in shrinking function, and failing to take into account the dyeing shrinkage function.

Active Publication Date: 2008-04-23
KANEKA CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, it was confirmed that, since the method described in these previous documents does not show a layered difference between the guard hair part and the pile part, it is not possible to obtain a pile fabric product with excellent appearance.
In addition, in the acrylic shrinkable fibers described in Patent Document 1 and Patent Document 2, sufficient dyeability cannot be obtained by dyeing at a temperature lower than 80° C. condition problem
However, although this method makes it possible to dye acrylic synthetic fibers with extremely fine deniers, it is still difficult to achieve sufficient low-temperature dyeability and shrinkage after dyeing when the denier is greater than 1 dtex.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Examples

Experimental program
Comparison scheme
Effect test

manufacture example 1

[0053] Put 2920g of dimethylformamide (DMF) produced by Nissan Chemical Co., Ltd., 800g of acrylonitrile (AN) produced by Asahi Kasei Co., Ltd., and 120g of methyl acrylate (MA) produced by Toagosei Co., Ltd. into a pressure-resistant polymerization reactor with a capacity of 5L 160 g of a 50% aqueous solution of sodium 2-acrylamide-2-methylpropanesulfonate (SAM) produced by Toagosei Co., Ltd. was replaced with nitrogen. The temperature in the polymerizer was adjusted to 55° C., 5 g of 2,2-azobis(2,4-dimethylvaleronitrile) (AIVN) was charged as an initiator, and polymerization was started. Add 10g AIVN in the middle, polymerize for 2 hours, then be warming up to 70 ℃, polymerize for 10 hours, obtain the 25% solution (DMF / water mixed solvent) of copolymer (AN / MA / SAM=80 / 12 / 8 (weight ratio)) ).

[0054] Take the above solution with a copolymer concentration of 25% as the spinning stock solution, pass the spinning stock solution through a 0.08mmΦ, 2000-hole spinneret, and spray i...

manufacture example 2～10

[0056] Acrylic shrinkable fibers having a fineness shown in Table 1 were produced in the same manner as in Production Example 1 except that the composition of the copolymer was changed to the ratio shown in Table 1 (Production Examples 2 to 9). In addition, except that the composition of the copolymer is the ratio shown in Table 1, polymerization is carried out in the same polymerization method as in Production Example 1, and the same method as in Production Example 1 is carried out except passing through a spinneret with 0.12mmΦ and 800 holes. Spinning was carried out by the same method as in Production Example 1, and the acrylic shrinkable fiber of Production Example 10 was produced in the same manner as Production Example 1.

[0057] [Table 1]

[0058]

Embodiment 1～11 and comparative example 1～4

[0060] Acetic acid and sodium acetate were added to 200cc of 2.5% omf malachite green dyeing bath to make the concentrations 0.05g / L and 0.02g / L, and the pH was adjusted to 3-4. 1 g of the arbitrary shrinkable fibers obtained in Production Examples 1 to 10 were dyed for 60 minutes using the dye bath under the conditions described in Table 2, respectively. Table 2 shows the workability at this time, the relative saturation value, and the measurement results of the shrinkage rate at 130° C. dry heat treatment for 5 minutes after dyeing.

[0061] [Table 2]

[0062] Example

serial number

in use

fiber

operability

Dyeing temperature (℃)

relative saturation value

Residue after dyeing

Shrinkage(%)

Example 1

Manufacturing example 1

○

60

0.4

24

Example 2

Manufacturing example 1

○

70

0.8

21

Example 3

Manufacturing example 3

○

...

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PUM

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Abstract

The present invention provides an acrylic shrinkable fiber that can be dyed even if the fiber has a fineness of 1 dtex or more, and has a high shrinkage function even after dyeing, and a fleece fabric product using the same. The acrylic shrinkable fiber of the present invention is characterized in that it contains 40 to 93% by weight of acrylonitrile, 2 to 10% by weight of monomers containing sulfonic acid groups, and 5 to 58% by weight of monomers that can be copolymerized with the above components. It is formed by the copolymer of the body, and the average fineness is above 1dtex.

Description

technical field [0001] The present invention relates to an acrylic shrinkable fiber and a fleece fabric product using the fiber. Background technique [0002] Conventionally, acrylic fibers have a fur-like feel, and have been used in napped products such as toys and clothing because of this characteristic. Among the above-mentioned napped products, in the field of pile fabric products, in order to impart a natural appearance and an excellent nap feeling, the fluff part corresponding to natural fur is composed of shrinkable fibers, and the part corresponding to guard hair is composed of non-shrinkable fibers. There are many examples. [0003] Once the existing shrinkable fibers are dyed, they will shrink due to heat during dyeing, thus becoming non-shrinkable fibers after dyeing. Therefore, when the conventional shrinkable fiber is dyed and used as the fiber constituting the short pile portion of the fleece fabric, there is a problem that the fiber is not suitable for the t...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F6/38D04B21/04D04B1/04
CPCD01F6/38D04B1/04D04B21/04
Inventor 川村光平西田宗平
Owner KANEKA CORP
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