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Pre-treatment process for dying cotton and cotton elastic fabric
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A fabric dyeing and stretching technology, applied in fiber treatment, biochemical fiber treatment, plant fiber, etc., can solve the problems of complex operation process, low stability, small application range, etc., to achieve enhanced fermentation washing effect and better cloth surface quality Good, cost-reducing effect
Active Publication Date: 2010-12-08
PACIFIC (PANYU) TEXTILES LTD
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Problems solved by technology
Chinese patent (publication number: CN1417402A) discloses a process for pretreatment of knitted fabrics with enzymes. This process includes hydrogen peroxide pretreatment, water washing, biological enzyme impregnation treatment, enzyme elimination, and water washing intermittent method to complete the pretreatment of knitted fabrics. This process consumes a lot of water, and the bath ratio is 1:10-50. At the same time, the operation process is complicated and cannot be continuously produced.
The Chinese patent (publication number: CN10
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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Effect test
Embodiment 1
[0010] Spandex 1X1 rib fabric 1290.5kg, specification 32S / 1 fine cotton + 20D spandex, color: rose red
[0011] After opening the cloth, boiling the cloth, and then fermenting with biological enzymes, the process of fermenting with biological enzymes is as follows: into the cloth and water, the bath ratio is 1:3.5, add 2.9kg of cellulase, 0.6kg of NaAc, 2.9kg of HAc, The temperature is 50°C, and the time is 30 minutes. Add 9kg of sodium carbonate to inactivate the enzyme at 80°C for 4 minutes; add 1.2kg of acetic acid to adjust the pH at 55°C for 6 minutes. Do not drain and dye.
[0012] After the above-mentioned treatment of the fabric, the finished product rate after dyeing is 99%, PILLING GB-T4802.3 grade 4.
[0015] After opening the cloth, boiling the cloth, and then fermenting with biological enzymes, the process of fermenting with biological enzymes is as follows: into the cloth and water, the bath ratio is 1:5.4, add 14.9kg of cellulase, 7.4kg of NaAc, 14.9kg of HAc, The temperature is 85°C, and the time is 50 minutes. Add 14.9kg of sodium carbonate to inactivate the enzyme at a temperature of 80°C for 4 minutes; add 1.5kg of acetic acid to adjust the pH at a temperature of 55°C for 6 minutes. Do not drain and dye.
[0016] The dyed finished product rate of the above-mentioned treated fabric is 98.6%, PILLING GB-T4802.3 3.5 grade.
Embodiment 3
[0018] Spandex 1X1 rib fabric 1188.4kg, specification 40S / 1COTTON / MODAL 60 / 40+20D spandex, color: dark brown
[0019] After opening the cloth, boiling the cloth, and then fermenting with biological enzymes, the process of fermenting with biological enzymes is as follows: into the cloth and water, the bath ratio is 1:4, add 4.8kg of cellulase, 1.4kg of NaAc, 4.8kg of HAc, The temperature is 60°C, and the time is 35 minutes. Add 9.5kg of sodium carbonate to inactivate the enzyme at a temperature of 80°C for 4 minutes; add 1.0kg of acetic acid to adjust the pH at a temperature of 55°C for 6 minutes. Do not drain and dye.
[0020] The dyed finished product rate of the above-mentioned treated fabric is 98.8%, PILLING GB-T4802.3 3.5 grade.
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 discloses a pre-treatment process for dying cotton and a cotton elastic fabric. The process comprises a scutching step, a cloth boiling step and a biological enzyme bio-washing step, wherein in the biological enzyme bio-washing step, 0.5 to 2 g/l of cellulase and NaAc-HAc buffer solution are used; the NaAc-HAc buffer solution consists of 0.1 to 1 g/l of HAc and 0.5 to 2 g/l of NaAc; the treatment bath ratio of the cotton or the cotton elastic fabric to enzyme is 1:3.5-5.4; temperature is between 50 and 85 DEG C; and time is between 30 and 50 minutes. The NaAc-HAc buffer solution serving as an aid is added in a biological enzyme bio-washing process, a bio-washing environment is controlled through the aid and the pH value of the bio-washing process is controlled to be between 4.0 and 4.5 to form a bio-washing condition most suitable for the activity of the cellulase, so that bio-washing effect can be improved, cloth cover quality is higher, one-time dying success rate of a product can reach over 98 percent, even 99.5 percent, and pilling test GB-T4802.3 is up to more than grade 3.5, even grade 4. Moreover, bath ratio is lowered to be 1: 3.5-5.4, water is saved and cost is lowered.
Description
Technical field: [0001] The invention belongs to the technical field of pretreatment in the printing and dyeing industry, and in particular relates to a pretreatment process for dyeing cotton and cotton elastic fabrics. Background technique: [0002] Cotton fibers contain 0.4% to 1.2% pectin, 0.4% to 1.2% wax, 1.0 to 1.9% protein, 0.7 to 1.6% ash and other natural impurities or companions. These impurities mainly exist in cotton. In the cuticle and primary cell wall of fibers. The presence of these impurities seriously affects the wettability of cotton fibers. Therefore, the first step in the dyeing and finishing of cotton textile products is to carry out pretreatment to remove natural impurities on cotton fibers, improve the wetting and permeability of cotton fabrics, and create good conditions for subsequent dyeing and finishing. [0003] At present, there are two kinds of processes for the pretreatment of cotton fabric dyeing: one, the method of scouring with caustic so...
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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