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What are the reasons for holes in dyeing and finishing?

Views: 0     Author: Site Editor     Publish Time: 2021-05-25      Origin: Site


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(1) The amount of acid and oxygen water is too high;

(2) There are more iron ions in the water quality;

(3) If the hole is regular, there is a problem with the equipment;

(4) The "temperature + time" parameter is improper;

(5) Holes in bleaching are caused by the reaction of hydrogen peroxide and iron ions in most cases;

(6) The purity of hydrogen peroxide and alkali is excessive;

(7) Whether water softener is added for pretreatment and dyeing, and the metal ion content in the water may be too high;

(8) The hydrogen peroxide caused by heavy metal ions quickly decomposes locally, causing holes.

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