The addition of paper additives can make the paper have better quality, so that the utilization rate of dyes is effectively improved. The use of the most efficient paper additives are retention agents, defoamer and fixing agent three kinds. Retention agent, as the name suggests, is to improve the paper machine network fiber and fine materials retained chemicals. Defoaming agent is in the processing process to reduce the surface tension, inhibit foam production or elimination of foam-producing additives. Fixing agent is one of the important auxiliaries in the printing and dyeing industry, it is an additive which can improve the colour fastness to wet treatment of the dye. There are other functional auxiliaries to choose from.

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