A multilayer sheet harmless to human beings, having a certain gas-barrier property, and comprising an easily-produced metal film layer and a packaging material made of the multilayer sheet.
多层片对人体无害，具有一定的气体阻隔性，并包括一个易于制作的金属薄膜层和包装材料的多层片材的。
A multilayer sheet harmless to human beings, having a certain gas-barrier property, and comprising an easily-produced metal film layer and a packaging material made of the multilayer sheet.
多层片对人体无害，具有一定的气体阻隔性，并包括一个易于制作的金属薄膜层和包装材料的多层片材的。
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