Salt-free alkali-free washing-free dyeing method for all-cotton and regenerated cellulose fabric

Abstract

The invention discloses a salt-free alkali-free washing-free dyeing method for an all-cotton and regenerated cellulose fabric. The salt-free alkali-free washing-free dyeing method comprises the following steps that 1, fixation synergistic no-clean amine is rolled, a semi-finished fabric is placed on padding equipment, the fabric is soaked in the fixation synergistic no-clean amine through a plurality of guide rollers, the fabric is uniformly rolled through a double-roller padder, the fabric is flatly rolled on an A-shaped frame, rotary cold batch is carried out for 1 to 48 hours; after the cold-batch reaction, washing with a continuous washing machine for the first time and drying are carried out; 2, dyeing is carried out, the fabric is put into the double-roller padder again, the fabric is soaked in the dyeing solution by virtue of the plurality of uniform guide rollers, the fabric is rolled by virtue of a roller, the fabric is rolled on an A-shaped frame in a wet manner, and rotary cold batch is carried out for 1-24 hours to react and fix the color; the fabric is directly dried without washing, the drying temperature ranges from 80 DEG C to 180 DEG C, padding is conducted througha setting machine, a fabric softening agent is added, the PH value is adjusted, other after-finishing auxiliaries are used for tentering and shaping, the shaping temperature ranges from 100 DEG C to180 DEG C; and final preshrinking, calendaring and other processes are carried out, and a finished product is inspected and packaged. The method II comprises the following steps that 1, the fixation synergistic no-clean amine is rolled, the semi-finished fabric is put on the padding equipment, the fabric is soaked in the fixation synergistic no-clean amine by virtue of the plurality of guide rollers, uniform rolling and direct drying at 80-180 DEG C for later use are carried out, the fabric is subjected to dip dyeing in a dye vat or uniform pad dyeing through the double-roller padder and thenis dried, softened and shaped, the shaping temperature ranges from 100 DEG C to 180 DEG C; and the final preshrinking, calendaring and other processes are carried out, and the finished product is inspected and packaged.

Description

technical field [0001] The invention relates to the technical field of fabric dyeing, in particular to a salt-free, alkali-free and water-free dyeing method for cotton and regenerated cellulose fabrics. Background technique [0002] Because the dyeing and fixing rate of traditional reactive dyes can only reach 60-80% for light colors, and only 50-60% for dark colors and bright reds, and the dyeing of traditional reactive dyes requires a large amount of electrolytes to promote dyeing And a large amount of sodium carbonate provides a relatively stable Ph value to make reactive dyes and cotton fibers react to produce covalent bonds to fix the color. As a result, waste water with high chroma and high salinity is brought, which is not conducive to the requirements of resource regeneration and environmental protection. Moreover, the traditional reactive dyeing process takes a long time and consumes a lot of water, electricity, steam and energy. Because the dyeing rate of each bat...

AI Technical Summary

Problems solved by technology

As a result, wastewater with high chroma and high salinity is brought, which is not conducive to resource regeneration and environmental protection requirements.

In addition, the traditional reactive dyeing process takes a long time and consumes a lot of water, electricity, steam and energy. Because the dyeing rate of each batch is uncertain, it is necessary to continuously check the color to confirm the color, which is cumbersome and inefficient.

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