复合包装膜是指由多层薄膜经过印刷复合等等工艺形成的包装膜。按照材质分为:铝塑复合包装膜和塑塑复合包装膜。按材料结构分为二层、三层、四层、五层等等,二层的有:PET/PE,PET/CPP,OPP/CPP,OPP/PE;NY/CPP,NY/PE,PET/VMCPP,OPP/VMCPP;三层有:PET/NY/PE,PET/NY/CPP,PET/AL/PE,PET/AL/CPP,OPP/AL/PE。PET/VMCPP/PE,OPP/VMPET/PE;四层有:PET/AL/NY/PE,NY/AL/NY/PE等。
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