A washing process for vulcanized black denim garments

Abstract

The invention relates to a process for washing vulcanized black denim garments. The process comprises the following steps: placing pretreated denim garments in a desizing solution, performing desizing treatment at 0-60°C for 10-30 minutes, draining and washing with water at normal temperature; Put the denim garment after desizing treatment in the enzyme solution, treat it at 30-40°C for 15-60 minutes, drain and wash it with clean water at room temperature; place the denim garment after enzyme washing treatment in the rinse solution, and treat it at 40-50°C 10‑50 minutes, drain and wash with water at normal temperature; add dechlorination and deodorant to the rinsed denim garments, treat at 30‑40°C for 5‑15 minutes, drain and wash with normal temperature water; neutralize denim garments once After dehydration and drying, spray the PP solution on the denim garment surface and wash it with water; treat the denim garment sprayed with PP with hydroxylamine sulfate at 20-50°C for 5-15 minutes, drain and wash with water at room temperature; After the processed denim garment is post-treated, it can be dehydrated and dried. Compared with the prior art, the process of the invention is environmentally friendly and safe, and the denim garment has better performance.

Description

technical field [0001] The invention relates to the field of fabric washing, in particular to a washing process for vulcanized black denim garments. Background technique [0002] Denim clothing has always belonged to fashion clothing. A piece of ordinary jeans can show various patterns after different washing processes, such as cat whiskers, holes, fraying, tassels, embroidery and so on. Denim fabric can be divided into elastic, non-elastic, slub, mercerized, coated denim, etc., and some people can be divided into ordinary denim, combed denim, cotton denim, polyester cotton denim, slub denim, gold and silver silk striped denim, hemp cotton Denim, Tencel denim, etc. Denim fabrics are also distinguished according to different thicknesses, such as 4.5A, 6A, 8A, 11A, 12A, 13.5A, 14.5A, etc. Generally, most of the jeans worn normally are 8-12A. Denim fabric can also be divided into indigo denim, blue-black denim, vulcanized black denim, colored denim, etc. according to differen...

AI Technical Summary

Problems solved by technology

[0006] Due to the characteristics of dyes, the following problems exist in the washing process of sulfurized black denim: 1. Because sulfurized dyes need sulfurized alkali to be reduced first, sulfurized alkali has a smell of sulfur, so sulfurized black denim fabrics also have a smell The smell of eggs is quite unpleasant; 2. During the washing and bleaching process of vulcanized black denim, high temperature and high alkali are required, as well as a large amount of hydrogen peroxide for bleaching and desizing, which pollutes the water environment relatively; 3. Vulcanized black denim is sprayed with monkeys. Or after frying the snowflake process, the whiteness is not high, and the overall washing contrast is not obvious

[0011] The traditional vulcanized black denim washing process generally has the following problems and shortcomings. 1. The use of caustic soda and hydrogen peroxide is large. Both caustic soda and hydrogen peroxide are dangerous chemicals, and it is inconvenient to purchase raw materials, especially hydrogen peroxide. It needs to be filed and registered with relevant departments , and it is necessary to make a ledger when using it, and the competent department will regularly check the whereabouts of raw materials; 2. The processing temperature of desizing treatment is too high, the energy consumption is large, the process is not energy-saving, and the temperature is too high to cause damage to fabrics containing spandex elasticity. 3. After vulcanized black denim has been boiled, bleached, and processed by various processing techniques, some decomposed sulfur dyes will remain on the fabric, and these residual dyes will emit a smell of sulfide alkali. Very unpleasant smell, especially after heat treatment; 4. After spraying PP or frying snowflakes, the white area is difficult to clean, the whiteness is low, and the contrast between black and white is not obvious; 5. After processing, it is easy to be damaged by silicone oil, oxidation , light and other causes of yellowing

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