New rapid proofing method for cold pad batch dyeing

Abstract

The invention relates to a new rapid proofing method for cold pad batch dyeing. The method comprises the following steps of: (1) preparing the reactive dye pad dyeing solution which is consistent with the production formulation of a large sample, and using up reactive dye, penetrant solution and reactive dye cold pad batch alkaline agent which are mixed together in 40-90 minutes; (2) according to the soaking time and mangle expression which are consistent with the large sample production, alternately soaking and rolling a small cotton sample; (3) rolling the pad dyed small cotton sample along a glass rod which has the same breadth as the small cotton sample, putting the rolled small cotton sample into a plastic hermetic bag which is matched with the small cotton sample, extracting the gas in the plastic bag, and keeping tight; (4) slightly putting the plastic hermetic bag which contains the small cotton sample into a water bath of 20-40 DEG C to be banked up for 20-60 minutes in a thermal insulation manner, pulling the hermetic bag out, and putting the hermetic bag into a water bath of 40-70 DEG C to be banked up for 5-30 minutes in a thermal insulation manner, pulling the hermetic bag out, and taking the dyed cotton fabric out; and (5) according to the dyeing which is consistent with the technology of the large sample production, matching the colors of the small dyed cotton sample. The method has the following beneficial effects that the method is simple to operate, the requirements on the technological equipment are low, the proofing colors can be accurately produced by corresponding to the colors of the large sample, and delta E (DE) is not more than 1 according to color measurement committee (CMC).

Description

technical field [0001] The invention relates to the field of cold pad-batch dyeing by using reactive dyes mixed with alkaline agents in the printing and dyeing industry, in particular to a new rapid sample-proofing method for cold pad-batch dyeing. Background technique [0002] The printing and dyeing industry uses reactive dyes mixed with alkaline agents for cold pad-batch dyeing production. During this period, it needs to be stacked at room temperature for about 24 hours to complete the dyeing. However, small samples are usually made before cold pad-batch dyeing in order to determine the dyeing prescription and dyeing process of large-scale cold pad-batch dyeing production. If the room temperature is stacked for 24 hours, the production plan for large sample cold pad batch dyeing is often delayed due to the long time of making small samples, and finally the delivery time of the product is delayed. [0003] For this reason, many printing and dyeing manufacturers are active...

AI Technical Summary

Problems solved by technology

In addition, the important factor of the influence of the reactive dye cold pad-batch alkali agent on the hydrolysis of the reactive dye is also ignored.

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