求翻译：3.包装材料为一层塑料薄膜或具有与环境介质进行水汽交换可忽略不计特性的适当材料，装入填充料后，立即将包装材料密封。可采用一种层压薄膜，它是由一层易于封接的120㎛厚的高压聚乙烯薄膜和外面用一层约12.5㎛厚的聚对苯二酸酯薄膜粘接在一起的层压薄膜。是什么意思？

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3. packaging materials to the layers of plastic film or with the environmental media to be used for moisture exchange can be ignored features of appropriate materials, and load the fill material, and for the immediate packaging material seal. For a laminated film, and it is a level easy-to-seal to t

3. packing materials are a plastic film or have with the environment medium carry on the water vapor exchange to be possible to ignore the characteristic suitable material, after loads the stopping, immediately packing material seal.May use one kind of lamination thin film, it is easy to seal by one

3. packaging materials for a layer of plastic film or with negligible water vapor Exchange with the environment media properties of suitable materials, when the filler is loaded immediately seals the packaging material. A laminated film can be used, it is composed of one easily sealing 120 ㎛ thick p

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