PE agricultural film is widely used in agricultural production. Therefore, the problem of anti-fogging is more important. The surfactant described below can be added to the PE material formulation system to obtain a very obvious anti-fogging effect. The dosage of additives is 0.05%~2.5%, and its HLB value (hydrophilic and lipophilic balance value) is between 4~14, and each molecule is required to contain 2~10 EO groups (vinyl oxide groups) and a fat derivative group. Commonly used polyethylene glycol monostearate (EO=9), polyethylene glycol monolaurate (EO=9), polyethylene lauryl ether (EO=4), polyethylene soybean oleamide (EO=2), polyethylene sorbitol monostearate (EO=4), polyethylene sorbitol monolaurate (EO=4), polyethylene sorbitan monocaprylate (EO=5) and so on.

Experiments have found that the combination of two surfactants is more effective than using one alone, and can produce a synergistic effect. The usual method is to add triethanolamine phosphate to surfactants such as ethylene oxide derivatives of high-carbon fatty alcohols, ethylene oxide derivatives of alkylphenols, ethylene oxide derivatives of high-carbon fatty acids, ethylene oxide derivatives of fatty acid esters of glycerol or sorbitol, etc., and the result of the synergistic effect is to greatly improve the anti-fogging performance of plastic packaging materials. After the use of composite anti-atomizer in the experiment, the surface wettability of the polyethylene film is good, and the contact angle can be reduced to about 20°. For example, the mixed additives of lauryl ether (EO=10) and triethanol ether (EO=10) of polyethylene oxide and phosphate of triethanolamine can greatly extend the anti-fogging validity period of plastic films.