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Fabric printing and dyeing pretreatment method

A technology of fabrics and mixtures, applied in the direction of textiles, papermaking, dry-cleaning fiber products, etc., can solve the problems of high pollution, large reduction in fiber strength, and non-compliance with environmental protection, etc., to achieve COD index reduction, fabric weight loss rate reduction, and environmental protection effects significant effect

Inactive Publication Date: 2017-09-29
江苏卡曼卡纺织有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The conventional pretreatment method for fabric printing and dyeing is the oxygen bleaching process, and the process steps are roughly as follows: High temperature treatment with hydrogen peroxide, caustic soda, refining agent, and stabilizer (98°C, 120min)—washing—whitening (98°C, 20min)— ——Water washing——Pickling——Oxygen removal——Add softening (40℃, 30min). The above treatment process has the following disadvantages: 1. The types of pretreatment additives (hydrogen peroxide, caustic soda, refining agent, stabilizer, etc.) required are relatively large. Many, making the treatment process a high-energy, high-pollution, high-emission process, which does not conform to the concept of modern industrial green and environmental protection; 2, the hydrogen peroxide mediation rate is difficult to control, and the whiteness of the fabric before and after treatment is difficult to achieve 3. The strong alkalinity of caustic soda makes the working fluid alkaline during treatment, which is not conducive to the stability of fabrics before and after treatment. The fabric and skin after treatment Lack of comfort after contact; 4. After treatment, the weight loss rate of the fabric is high, and the fiber strength is greatly reduced

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
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Effect test

Embodiment approach 1

[0024] This embodiment provides a pretreatment method for printing and dyeing of cellulose fiber fabrics, specifically:

[0025] The first water washing: wash 2.5kg of cellulose fiber fabrics with water for 10 minutes under the condition of a liquor ratio of 1:5.5 and then drain. The purpose of this water washing is to clean the floating dust and impurities in the cellulose fiber fabric.

[0026] Tea saponin washing: re-add clean water to the above-mentioned washed cellulose fiber fabric, the bath ratio is 1:5.5, completely dissolve 170g tea saponin in warm water at 35°C to make a tea saponin aqueous solution, and use 90g Add the tea saponin aqueous solution at a rate of 1:5.5 to the mixture of cellulose fiber fabric and water and mix evenly. After mixing, the bath ratio is 1:4.5, and then heat the above-mentioned The mixture with a liquor ratio of 1:4.5 was heated to 90°C, and kept at 90°C for tea saponin washing for 75 minutes and then drained. The purpose of tea saponin w...

Embodiment approach 2

[0031] This embodiment provides a pretreatment method for regenerated fiber printing and dyeing, specifically:

[0032] The first water washing: wash 2.5kg of regenerated fibers with water for 15 minutes at a bath ratio of 1:6 and then drain. The purpose of this water washing is to wash away the floating dust and impurities in the regenerated fiber.

[0033] Tea saponin washing: re-add clean water to the above-mentioned washed regenerated fiber, the liquor ratio is 1:6, completely dissolve 125g tea saponin in warm water at 40°C to make a tea saponin aqueous solution, and use 95g / min Add the aqueous solution of tea saponin to the mixture of regenerated fiber and water with a bath ratio of 1:6 and mix evenly. After mixing, the bath ratio is 1:5, and then increase the bath ratio to 1 The mixture of :5 was warmed up to 95°C, and was incubated at 95°C and washed with tea saponin for 80min and then drained. The purpose of tea saponin washing is mainly to remove the grease in the r...

Embodiment approach 3

[0038] This embodiment provides a pretreatment method for chemical fiber printing and dyeing, specifically:

[0039]The first water washing: wash 2.5kg of chemical fibers with water for 20 minutes under the condition that the bath ratio is 1:6.5, and then drain. The purpose of this water washing is to wash away the floating dust and impurities in the chemical fibers.

[0040] Tea saponin washing: Add clean water to the above-mentioned washed chemical fiber again, the bath ratio is 1:6.5, completely dissolve 100g tea saponin in warm water at 45°C to make a tea saponin aqueous solution, and use 100g / min Add the aqueous solution of tea saponin to the mixture of chemical fiber and water with a bath ratio of 1:6.5 and mix evenly. : The mixture of 5.5 was warmed up to 98°C, and was incubated at 98°C and washed with tea saponin for 85min and then drained. The purpose of tea saponin washing is mainly to remove the grease in the fiber.

[0041] The second water washing: add clean wa...

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

The invention relates to the chemical field and discloses a fabric printing and dyeing pretreatment method, which comprises the following steps: S1: washing: washing a fabric for 10-20min under the condition with a bath ratio being 1 to (5.5 to 6.5), and then draining water; S2: tea saponin washing: washing the fabric obtained in the step S1 for 75-85min under the condition with a bath ratio being 1 to (4.5 to 5.5), and then draining water; S3: washing: washing the fabric obtained in the step S2 for 10-20min under the condition with a bath ratio being 1 to (5.5 to 6.5), and then draining water; and S4: pickling neutralization: performing pickling neutralization on the fabric obtained in the step S3 for 10-20min under the condition with a bath ratio being 1 to (4.5 to 5.5), and then draining water. The fabric printing and dyeing pretreatment method is simple, clean and safe and does not generate pollution; and the treated fabric is relatively strong in comfort feeling.

Description

technical field [0001] The invention relates to the field of pretreatment for printing and dyeing, in particular to a pretreatment method for fabric printing and dyeing. Background technique [0002] The conventional pretreatment method for fabric printing and dyeing is the oxygen bleaching process, and the process steps are roughly as follows: High temperature treatment with hydrogen peroxide, caustic soda, refining agent, and stabilizer (98°C, 120min)—washing—whitening (98°C, 20min)— ——Water washing——Pickling——Oxygen removal——Add softening (40℃, 30min). The above treatment process has the following disadvantages: 1. The types of pretreatment additives (hydrogen peroxide, caustic soda, refining agent, stabilizer, etc.) required are relatively large. Many, making the treatment process a high-energy, high-pollution, high-emission process, which does not conform to the concept of modern industrial green and environmental protection; 2, the hydrogen peroxide mediation rate is d...

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): D06L1/16
CPCD06L1/16
Inventor 吴巧云
Owner 江苏卡曼卡纺织有限公司
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