Abstract: The influence of different antistatic agent, corona discharge power, and treating technology on wetting tension of three-layer casting polypropylene film (CPP) film was studied. When antistatic agent ASPA 2446 OB DC was introduced, the CPP film treated with two station corona could preserve a wetting tension over 38 mN/m after 30 days. This film could used in both in printing and heat sealing，and could directly be used in low temperature packaging field without laminating.

Key words: wetting tension, in printing, cold resistant, antistatic agent, corona discharge treatment, cast polypropylene