20微米的PP薄膜是采用标准的铸膜挤压工艺生产的，即金属化PP薄膜涂上铝或其他不涂任何涂层。样品是在一个生产食品级塑料的工业中通过铸造共挤工艺制造的。物理性能如拉伸强度，氧透过率和水蒸汽透过率按ASTM标准测量。结果表明，非金属化膜的WVTR范围为6-8g/m²/day, OTR范围为2300-2500cc/m²/atm/day。然而，金属化PP薄膜在OTR和WVTR中显示出约50%至80%的改善。研究表明，铝金属化改善了铝的物理性能，但影响了铝的降解速度。-1， 38913 cm^-1， 6742 cm^-1，降解后均不存在。 Similarly in metalized plastic peaks at 3779.8 cm^-1, 3771.1 cm^-1 , 2357.2 cm^-1 and 2007.2 cm^-1 were disappeared after degradation. This variation in peaks indicates fungi use the plastic as the source of carbon. These samples were tested for their degradation properties with respect to the physical properties. Both samples took for 30 days of degradation. It is found that non-metalized films degraded effectively in the mean period of time.