目的 获得盐雾环境下PE基包装材料阻隔性能的变化规律。方法 考察盐雾试验前后4种PE基包装材料的氧气透过率、 水蒸气透过率以及包装膜表面形貌变化情况。结果 真空包装技术使聚乙烯包装膜、 PE 高阻隔包装膜和镀铝高阻隔包装膜等3种包装膜的氧气透过量和水蒸气透过量均有增加，而增强型高阻隔包装膜的氧气透过量和水蒸气透过量均有较大下降。结论 PE基高阻隔包装膜能适应于盐雾环境下装备器材的真空长效包装。

The aim of this work was to obtain the variation law of barrier properties of the PE-based packaging materials in salt spray environment. The oxygen transmission rate, water vapor transmission rate and surface morphology changes of packaging film were investigated for four kinds of PE based packaging materials before and after the salt spray test. Vacuum packaging technology increased both the oxygen transmission rate and the moisture vapor transmission rate of the three types of packaging films including polyethylene packaging film, PE high barrier packaging film and aluminized high barrier packaging film, while obviously decreased both the oxygen transmission rate and water vapor transmission rate of strengthened high barrier packaging film. In conclusion, PE-based high barrier packaging film is more adaptive to the vacuum composite packaging for the equipment in salt spray environment.