What are the causes of holes caused by hydrogen peroxide bleaching?

(1) Before bleaching, the cloth was stained with oil stains of heavy metal ions such as copper and iron; or it was in contact with equipment such as copper and iron during the bleaching process.

(2) The concentration of hydrogen peroxide is too high, the steaming time after bleaching is too long or superheated steam is used.

(3) If the grey fabric is mercerized before bleaching, the pH of the fabric surface will be too high and the amount of alkali will be too high due to uneven washing after mercerizing.

(4) Improper selection of stabilizer or poor stabilizing effect of stabilizer, resulting in accelerated decomposition of hydrogen peroxide.

The above points may cause holes in the fabric, but heavy metal ions are more harmful.