新型高阻隔包装材料pva的诞生，既保证了乳制品的安全，又降低了资源消耗。
New high barrier package material PVA birth, also had guaranteed the dairy products security, had reduced the resources consumption.
抗穿刺性能是尖缘产品包装使用的薄柔性材料的一项重要性能，因为产品的尖缘会破坏阻隔包装的完整性。
Penetration resistance is an important end-use performance of thin flexible materials where a sharp-edged product can destroy the integrity of a barrier wrap.
但PET的阻隔性一般，对于一些特殊包装内容物(如啤酒)来讲远远不够，限制了其应用范围。
But the barrier of PET is common, not enough for a special packing contents (eg. Beer), limited the scope of applications.
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