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Finishing method for improving whiteness of all-cotton fabric

A technology for fabrics and whiteness, applied in the finishing field of improving the whiteness of cotton fabrics, to achieve the effects of excellent comprehensive performance, waste reduction, and reduction of whiteness.

Pending Publication Date: 2022-02-15
鲁丰织染有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The invention utilizes the matching property between the molecular size of the brightener and the pore of the cellulose molecule to effectively overcome the defect that the molecular size of the brightener is too large to enter the inside of the fiber molecule in the process of fluorescent whitening, so that the fluorescent whitening agent can fully Into the interior of the fiber to increase the color level of the fluorescent whitening agent during the steaming process

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

Embodiment 1

[0024] The finishing method for improving the whiteness of cotton fabrics includes the following steps: singeing → desizing → scouring → bleaching → mercerizing → bleached fabrics treated with liquid ammonia.

[0025] 1) Composition of fluorescent whitening agent finishing solution: prepare fluorescent whitening agent solution with a concentration of 12g / L, penetrant: 1.5g / L, fully dissolve the above components in water and mix them evenly.

[0026] 2) Pad the bleached cotton fabric (fabric specifications: cotton 60S*cotton 60S*190*116*57 / 58, plain weave) with the above whitening solution, and the excess rate of the fabric is 55%.

[0027] 3) The fabric after padding is steamed in saturated steam at 102°C for 50s

[0028] 4) After steaming, the fabric is washed in sequence through 8 washing tanks to remove floating color. The temperatures of the 8 washing tanks are: 50°C, 50°C, 50°C, 50°C, 50°C, 40°C, 40°C, 50°C ℃, the 6th and 7th washing tanks contain 2g / L citric acid aqueou...

Embodiment 2

[0033] The finishing method for improving the whiteness of cotton fabrics includes the following steps: singeing → desizing → scouring → bleaching → mercerizing → bleached fabrics treated with liquid ammonia.

[0034] 1) Composition of fluorescent whitening agent finishing solution: prepare fluorescent whitening agent solution with a concentration of 8g / L, penetrant: 1g / L, fully dissolve the above components in water and mix them evenly.

[0035] 2) Pad the above-mentioned bleached cotton fabric (fabric specifications: cotton 40S*cotton 80S joint stock*150*120*57 / 58, jacquard) with the above-mentioned whitening solution, and the excess rate of the fabric is 60%.

[0036] 3) The fabric after padding is steamed in saturated steam at 100°C for 60s

[0037] 4) After steaming, the fabric is washed in sequence through 8 washing tanks to remove floating color. The temperatures of the 8 washing tanks are: 50°C, 50°C, 50°C, 50°C, 50°C, 40°C, 40°C, 50°C ℃, the 6th and 7th washing tanks...

Embodiment 3

[0042] The finishing method for improving the whiteness of cotton fabrics includes the following steps: singeing → desizing → scouring → bleaching → mercerizing → bleached fabrics treated with liquid ammonia.

[0043] 1) Composition of fluorescent whitening agent finishing solution: prepare fluorescent whitening agent solution with a concentration of 14g / L, penetrant: 2g / L, fully dissolve the above components in water and mix them evenly.

[0044] 2) The above-mentioned bleached cotton fabric (fabric specifications: cotton 40S*cotton 40S*130*90*57 / 58, 2 / 2 twill) is dipped with the above-mentioned whitening solution, and the excess rate of the fabric is 58%.

[0045] 3) The fabric after padding is steamed in saturated steam at 101°C for 55s

[0046] 4) After steaming, the fabric is washed in sequence through 8 washing tanks to remove floating color. The temperatures of the 8 washing tanks are: 50°C, 50°C, 50°C, 50°C, 50°C, 40°C, 40°C, 50°C ℃, the 6th and 7th washing tanks cont...

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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PUM

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Abstract

The invention belongs to the technical field of textile finishing and processing, and particularly relates to a finishing method for improving the whiteness of all-cotton fabric. The technological process comprises singeing, desizing, boiling-off, bleaching, mercerizing, liquid ammonia treatment, whitening, softening and preshrinking; in the whitening procedure, a fluorescent whitening agent solution is prepared from 0.5-14 g / L of fluorescent whitening agent and 1-2 g / L of penetrating agent; and saturated steam steaming is carried out after padding in a fluorescent whitening agent solution. According to the method, the defect that in the fluorescent whitening process, due to the fact that the molecular size of the whitening agent is too large, the whitening agent cannot enter fiber molecules is effectively overcome by means of the matching performance of the molecular size of the whitening agent and the pores of cellulose molecules, the fluorescent whitening agent fully enters the fibers, and the color development level of the fluorescent whitening agent in the steaming process is improved. The CIE whiteness value of the all-cotton fabric whitened through the technology can reach 160 or above, the prepared product is high in quality, the using amount of the whitening agent is greatly reduced, and environmental protection and economic benefits are good.

Description

technical field [0001] The invention belongs to the technical field of textile finishing and processing, and in particular relates to a finishing method for improving the whiteness of cotton fabrics. Background technique [0002] Cotton fabric belongs to cellulose fiber, which has the characteristics of moisture absorption, breathability and soft hand feeling. The clothing made of white cotton fabric has a clean appearance and elegant appearance. It is the first choice of most successful people such as contemporary business people, white-collar workers, and graduates. And it is easy to cause the reduction of whiteness in the process of weaving, sizing and subsequent dyeing and finishing, which brings great difficulties to the production of high whiteness fabrics. In the preliminary scientific research work, some technicians have made relevant research on the process technology of improving the whiteness of fabrics. [0003] The invention patent CN113605083A of Yuan Jianqian...

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): D06L4/614D06L4/657D06L4/75
CPCD06L4/614D06L4/657D06L4/75
Inventor 张战旗齐元章王辉郝龙云王德振李娜
Owner 鲁丰织染有限公司