Pretreatment method for dyeing dark color on full-cotton twisted towel
A technology of pre-dyeing treatment and pre-treatment agent, which is applied in the field of active dyeing process of medium and dark colors, can solve the problems of high consumption of raw materials and energy, high COD value of sewage, low production efficiency, etc., to avoid high-temperature alkali-oxygen treatment, color Thick shine, cost-saving effect
Inactive Publication Date: 2015-04-29
JIANGSU CARNATIONS DYEING
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Problems solved by technology
In the production process of the traditional dyeing process, many chemicals are used, the production process is long, the labor intensity is high, the consumption of raw materials and energy is large, the production efficiency is low, and the COD value of the sewage is high.
Method used
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[0021] Such as figure 1 Shown, the dark color dyeing pretreatment method in the cotton spiral towel of the present invention is characterized in that carrying out according to the following process steps:
[0022] (1) Cotton spiral towels enter the atmospheric pressure overflow machine after being brushed;
[0023] (2) Adjust the bath ratio to 1:10, and the pH value is 6-8;
[0024] (3) Add one-bath low-temperature pretreatment agent and starch desizing enzyme, heat up to the specified temperature and keep it warm;
[0025] (4) After the heat preservation is over, drain the water, then wash it in cold water and drain it;
[0026] (5) Add a small amount of one-bath low-temperature pretreatment agent and dye to the water again;
[0027] (6) Dyeing and post-dyeing treatment;
[0028] (7) Finally, soften and leave the machine.
[0029] Wherein, when brushing the all-cotton spiral towel, 60°C warm water is used to swell the starch slurry on the spiral towel terry yarn, which ...
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The invention relates to a pretreatment method for dyeing dark color on a full-cotton twisted towel. The pretreatment method comprises the following steps: when the full-cotton twisted towel is brushed, brushing the full-cotton twisted towel with warm water, in pretreatment, adding a one-bath low-temperature pretreatment agent and wide-temperature starch desizing enzyme for treatment for a certain while at 80 DEG C, washing for one round with cold water, and further adding a small amount of the one-bath low-temperature pretreatment agent when dyeing, wherein dye for dyeing and dyeing aftertreatment can be directly added without adding deoxygenation enzyme or chelating agent, and the use amount of a softening agent for softening is also smaller than that of a conventional method. By adopting the pretreatment method for dyeing dark color on the full-cotton twisted towel, the towel is thick in color after being dyed and has the natural soft hand feeling of cotton, the scouring loss of the towel is reduced, the cost is reduced, the pollutant discharge is reduced, and the sewage treatment burden is also alleviated.
Description
technical field [0001] The invention belongs to the technical field of mid-dark reactive dyeing technology, in particular to a pretreatment method for mid-dark dyeing of cotton spiral towels. Background technique [0002] Cotton spiral towels are one of the most frequently equipped bathroom products in star-rated hotels and consumers. However, the dark-colored towels are challenged by water, energy and long technological processes during the bleaching and dyeing process. In addition, the conventional pre-dyeing treatment is also The polluted wastewater with high COD value. Due to the traditional pre-dyeing treatment of cotton fabrics, high-temperature desizing, scouring and oxygen bleaching are required to remove the impurities such as hydrogen peroxide left in the pre-treatment process of towel blanks that affect dyeability, and then carry out conventional of staining. In the traditional production process with complex dyeing process, many chemicals are used, the producti...
Claims
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Login to View More IPC IPC(8): D06P3/66D06P1/44D06L1/14
Inventor 朱士勇
Owner JIANGSU CARNATIONS DYEING