Spray coloring stack dying process for cotton woven fabrics
A process and grey fabric technology, which is applied in the field of spray color stacking dyeing process for cotton fabrics, and can solve the problems of permanent pad printing, dyeing color difference, and inability to guarantee uniformity.
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[0060] Example 1: A spray dyeing process of cotton fabric
[0061] Take 32 double-yarn paralleled cylindrical jerseys, and use reactive dyes, dye accelerators and alkali agents to dye the grey fabric military green. Among them, the reactive dyes are military green reactive dyes, the dye accelerant is Yuanming powder, and the alkaline agent is sodium hydroxide. Before use, the reactive dye, dye accelerant and alkali agent are all prepared into aqueous solution. The ratio of the total weight of the fabric of the grey cloth to the total weight of the sprayed solution is controlled in the range of 1:1 to 1.5. The total weight of the solution is the sum of the weights of the aqueous solution of reactive dyes, the aqueous solution of dye accelerants and the aqueous solution of alkaline agents. The weight accounts for 60 to 70% of the total weight of the solution, the weight of the dye accelerant aqueous solution accounts for 20 to 15% of the total weight of the solution, and the weigh...
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[0068] Example 2: A spray dyeing process of cotton fabric
[0069] Take one piece of double-sided ribbed open-width fabric, and dye the grey fabric big black with reactive dyes and alkali agents. Among them, the reactive dyes are large black reactive dyes, and the alkaline agent is sodium hydroxide. Before use, both reactive dyes and alkaline agents are formulated into aqueous solutions. The ratio of the total weight of the fabric of the grey cloth to the total weight of the sprayed solution is controlled in the range of 1:1 to 1.5. The total weight of the solution is the sum of the weight of the aqueous solution of reactive dye and the aqueous solution of alkaline agent, wherein the weight of the aqueous solution of reactive dye accounts for the total weight of the solution The weight of the alkaline agent aqueous solution accounts for 40-30% of the total weight of the solution.
[0070] The grey fabric is pretreated by conventional pretreatment methods before dyeing to remove i...
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[0077] Example 3: A spray dyeing process of cotton fabric
[0078] Take 32 double yarns and thread one cylindrical jersey, and dye the grey cloth military green with reactive dyes and alkali agents. Among them, the reactive dye is army green reactive dye, and the alkali agent is sodium hydroxide. Before use, both reactive dyes and alkaline agents are formulated into aqueous solutions. The ratio of the total weight of the fabric of the grey cloth to the total weight of the sprayed solution is controlled in the range of 1:1 to 1.5. The total weight of the solution is the sum of the weight of the aqueous solution of reactive dye and the aqueous solution of alkaline agent, wherein the weight of the aqueous solution of reactive dye accounts for the total weight of the solution The weight of the alkaline agent aqueous solution accounts for 40-30% of the total weight of the solution.
[0079] Before dyeing, the grey fabric is pretreated by cold pile pretreatment method to remove pectin,...
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