A Dyeing and Finishing Process of Cotton Black Cheese Yarn

Abstract

The invention relates to a dyeing and finishing process of all cotton black cheese. The specific process includes the following steps: pre-winding → cage loading → pretreatment, dyeing in the same bath → hot water washing → neutralization, soaping in the same bath → second soaping →Washing in hot water→Washing in cold water→Color-fixing and softening in the same bath→Inspection→Unloading the cage→Centrifugal dehydration→Drying→Inspection→Packing. The dyeing of cotton black cheese yarn adopts 60℃ constant temperature and full-material dyeing method; the neutralization and the first soaping are combined into one; 9 tanks of water are saved, that is, the emission of each ton of cotton black cheese yarn is reduced For 63 tons of waste water, the pretreatment process was completely abandoned, the consumption of steam and electricity was reduced, and the scouring agent in the same bath for scouring and dyeing was used. After the treatment, the capillary effect of cotton cellulose fibers can fully meet the requirements of reactive dye dyeing; The production time is reduced, saving nearly 45% of the time, and the production efficiency is improved. Without considering the entry and exit of cheese and dyeing materials, as well as water intake and drainage, the time of the optimized dyeing and finishing process is 245 minutes.

Description

technical field [0001] The patent of the present invention relates to a dyeing and finishing process, in particular to a dyeing and finishing process of all cotton black cheese. Background technique [0002] The traditional dyeing and finishing process of cotton black cheese is as follows: pre-winding → cage loading → pretreatment → hot water washing → removal of hydrogen peroxide → dyeing → cold water washing → cold water washing → neutralization → first soaping → second soaping → Washing in hot water→washing in cold water→fixing color→softening→inspection→unloading cage→centrifugal dehydration→drying→inspection→packing. The specific process flow chart is as figure 2 Shown: [0003] The deficiencies of this process are shown in the following aspects: first, pretreatment and dyeing, neutralization and soaping and color fixing and softening processes are carried out separately. In this way, the consumption of water, electricity and steam will increase correspondingly. Acco...

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Problems solved by technology

In this way, the consumption of water, electricity and steam will increase correspondingly. According to the above-mentioned traditional process, there are 13 cylinders of water in total. Calculated according to the bath ratio of 1:7 of the most used complete immersion method equipment at present, the dyeing and finishing of 1 ton of cotton yarn needs to be discharged 91 tons of wastewater, the process is long, which is not conducive to energy saving, emission reduction, and consumption reduction; second, the production process takes a long time

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