Method for boiling-off of blended fabric from polyamide fiber and polyurethane fiber, method for producing dyed blended fabric and dyed blended fabric

a blended fabric and polyamide technology, applied in the direction of detergent compounding agents, knitting, physical treatment, etc., can solve the problems of difficult removal of oil in a scouring step, easy adhesion of oil to materials, and smears on knitting

Inactive Publication Date: 2003-02-06
TORAY IND INC +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There is a problem in that oil is apt to adhere to materials including polyurethane fibers.
Smears on knitting due to oil used in knitting machines have been increasing due to the diversity of mix materials, the complexity of knitting structure, and high-speed knitting operation.
Furthermore, the removal of oil in a scouring step is difficult due to contamination of metals in the oil, such as iron or copper used for lube oil pipes for knitting machines or knitting machine needles.
Thus, in the dyeing process of mixed fabrics of polyamide fibers and polyurethane fibers, when contaminants such as oil smears are not thoroughly removed in a scouring step before a dyeing step, product deficiency such as dyeing specks or oil smears arises.
However, since oil smears are not sufficiently removed in a scouring step by such a method, problems due to dyeing specks or oil smears have arisen.
The above method is excellent in removing oil but is not substantially effective in the removal of smears containing metals and in the prevention of oil smears.
However, such methods have small effects and cause a decrease of color fastness in some cases.
When the content is less than 25% by weight, spinning is apt to be difficult due to the increasing heat required to vaporize the solvent.
On the other hand, when the content exceeds 80% by weight, spinning is also apt to be difficult due to a decline in the stability of the solvent.
When using hard water containing metal ions such as calcium and magnesium ions, the following disadvantages may arise: a lowering of efficiency, and the uneven dyeing and a lowering of dyeing property due to the formation of complexes composed of metal ions and acid dyes.

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

example 1

[0060] The fabric was scoured with a scouring solution containing 2 g / L of SUNMORL BL650 (a nonionic surfactant manufactured by NICCA CHEMICAL Co., Ltd.), 0.5 g / L of soda ash, and 3 g / L of ACROMER DH700 (an ethylenediaminetetraacetic acid sequestering agent manufactured by Teikoku Chemical Industries Co., Ltd.) at 90.degree. C. for 10 minutes using soft water having a total hardness of 10 ppm. The resulting fabric was preset at 190.degree. C. for 45 seconds and then dyed.

[0061] The dyed fabric had no oil smears or dyeing specks; hence, this example is excellent in level dyeing.

example 2

[0062] The fabric was scoured with a scouring solution containing 2 g / L of SUNMORL BL650 (a nonionic surfactant manufactured by NICCA CHEMICAL Co., Ltd.), 0.5 g / L of soda ash, and 3 g / L of CLEWAT DP80 (an diethylenetriaminepentaacetic acid sequestering agent manufactured by Teikoku Chemical Industries Co., Ltd.) at 90.degree. C. for 10 minutes using soft water having a total hardness of 10 ppm. The resulting fabric was preset at 190.degree. C. for 45 seconds and then dyed.

[0063] The dyed fabric had no oil smears and dyeing specks; hence, this example is excellent in level dyeing.

example 3

[0068] The fabric was scoured with a scouring solution containing 2 g / L of SUNMORL BL650 (a nonionic surfactant manufactured by NICCA CHEMICAL Co., Ltd.), and 2,000 ppm of ACROMER DH700 (an ethylenediaminetetraacetic acid sequestering agent manufactured by Teikoku Chemical Industries Co., Ltd.). The scouring treatment was performed using a continuous scouring apparatus, which was an open soaper type and had 2 treating tanks, under the following conditions: a temperature of 60.degree. C. in the first tank, a temperature of 90.degree. C. in the second tank, and a treating time of 30 seconds. The resulting fabric was preset at 190.degree. C. for 30 seconds with a dry heat setting apparatus, which was a pin tenter type, and then was dyed. After the scouring treatment, the used scouring solution in the second tank contained 250 ppm of the unreacted sequestering agent.

[0069] The dyed fabric had no oil smears and dyeing specks; hence, this example is excellent in level dyeing.

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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Abstract

A method for scouring a mixed fabric of polyamide fibers and polyurethane fibers is provided, wherein soft water as treating water is used and the treating water contains a sequestering agent. According to the present invention, a mixed fabric of polyamide fibers and polyurethane fibers in which uneven dyeing hardly arises, that is, excellent leveling is achieved, is provided.

Description

[0001] TECHNICAL FIELD[0002] The present invention relates to a method for scouring mixed fabrics of polyamide fibers and polyurethane fibers, a method for manufacturing dyed mixed fabrics, and dyed mixed fabrics.[0003] The present invention more particularly relates to a method for scouring a mixed fabric of polyamide fibers and polyurethane fibers, a method for manufacturing a dyed mixed fabric, and a dyed mixed fabric, in which the mixed fabric is effectively scoured by removing stains or oil smears and is excellent in leveling.[0004] BACKGROUND ART[0005] Polyurethane fibers are used for many kinds of wear such as innerwear, pantyhose, swimming wear, leotards, and outerwear because of their excellent characteristics such as stretching properties, shape retention, fitting properties, formability, unique texture, and crease resistance.[0006] Since pliable and soft texture is necessary for wear such as innerwear, pantyhose, swimming wear, leotards, and outerwear, which are in contac...

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(United States)
IPC IPC(8): D06L1/12D06P3/24D06P3/82D06P7/00
CPCD06L1/12D06P3/241D06P3/8209D06P7/005Y10T442/463
Inventor TANABE, YOUSUKEHOSODA, YOSHINORIOHIWA, SHINICHIISSHIKI, TAKASABUROU
Owner TORAY IND INC
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