Tinplate packaging from 2000 2002, reach began to fall, flexible packaging, bottom 2003 ~ 2004 have rebounded, but small in 2005 and began to drop. 2006 tinplate packaging production and fell 3%.
马口铁包装从2000年开始下降，2002年达到谷底软包装，2003～2004 年有小幅回升，但2005年又开始下滑。2006年马口铁包装产量又下降3%。
However, the main structure of plastic flexible packaging materials are plastic polymers, has some permeability to gas, and therefore can not fully replace the metal and glass packaging.
然而塑料软包装材料主体结构是塑料聚合物，对气体有一定的渗透性，因此并不能完全代替金属、玻璃包装。
Therefore, water vapor permeability of flexible packaging material (or barrier) of the test of testing more and more important in the packaging.
因此，对软包装材料透气透湿性（或阻隔性）的测试研究在包装测试中越来越重要。
Lithium battery can be non flexible packaging and metal packaging.
锂电池可非为软包装和金属包装。
The existing problems of food flexible packaging material were analyzed and the safety standards of flexible packaging materials were summarized.
本文分析了我国目前所使用的几种食品包装材料的安全隐患，就加强我国食品包装材料卫生管理工作提出了几点建议。
The existing problems of food flexible packaging material were analyzed and the safety standards of flexible packaging materials were summarized.
本文分析了我国目前所使用的几种食品包装材料的安全隐患，就加强我国食品包装材料卫生管理工作提出了几点建议。
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