Concave roller coating method: recommended formula ratio (weight ratio) P4000:26 10B:KL-298:6600: solvent = 1: 200: 10: 340, solid content 24%;

Comma knife coating method: it is recommended to use the formula ratio (weight ratio) P4000:26 10B:KL-298:6600: solvent =1:200:10: 40:160, and the solid content is 35.

(1) Weigh the raw materials in proportion, first mix KL-298 and solvent evenly, then add 6600→26 10B→P4000 in turn, and mix and stir for 20 minutes until uniform;

(2) evenly coating silica gel on the PET film by a coating method or a calendering method;

③ Curing: 1) When the laboratory coating process is 10μm, it can be baked at 130℃ 1 min.

2) Reference process of production coating: set the oven temperature from 90℃ to 160℃ and then to 140℃, and adjust the baking time and temperature according to the coating amount. When the thickness of the coating dry glue is 10μm, the baking time of the glue is controlled between 50 and 60 seconds, and when the thickness of the coating dry glue is 20μm, the glue is baked.

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