1、Printing and dyeing pretreatment agent: printing and dyeing pretreatment process includes fiber singeing, desizing, boiling, bleaching, mercerizing and other processing processes, need to add penetrating agent, emulsifier, cleaning agent and other surfactants, to organic sulfate, sulfonate and polyoxyethylene ether mainly

2、Printing and dyeing auxiliaries: dye varieties are different, dyeing process is different, the corresponding auxiliaries are needed, so there are many kinds of auxiliaries

There are respectively water softening agent, solvent, co-solvent, reducing agent, oxidant, color fixing agent, color developing agent......

3、After the printing and dyeing process is completed, the fabric is generally cleaned to remove float color to improve the dyeing fastness. The synthetic cleaning agent used varies with the dye and printing process. For example, after disperse dye dyeing polyester cotton fabric, a special non-ionic cleaning agent is needed to remove float color from the polyester and prevent contamination of the cotton fiber (see non-ionic surfactant).