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If the pressure-sensitive adhesive is based on pure acrylic acid, the emulsifier is based on DOWFAX2A1 and HANERCHEM? DNS-501, or HANERCHEM? DNS-458 as the system—that is, the emulsifier is an emulsifier with better wettability. The dosage of antifoaming agent 691 is 0.9-1‰, and the dosage of HANERCHEM T-70 is 1-1.2‰. The specific operations are as follows:

1) For transparent BOPP emulsion, the amount of antifoaming agent 691 is 0.9-1‰ of the total amount of the emulsion, and the amount of HANERCHEM T-70 is about 1‰ of the total amount of the emulsion. The aqueous solution is prepared at 1:8-10 and added slowly After stirring for 30 minutes.

2) For colored (usually yellow) BOPP emulsions, the amount of antifoaming agent 691 is 0.9-1‰ of the total amount of the emulsion, and the amount of HANERCHEM T-70 is about 1.2‰ of the amount of the emulsion, and the aqueous solution is prepared at 1:8-10 Stir for 30 minutes after adding.