| abstract |
A multi-layered film material having a structure wherein a protective layer, a composite film comprising a polyvinyl alcohol film or a film of an ethylene/vinyl acetate copolymer saponificate and a silicon oxide deposition layer formed on the former, and a heat-sealable polyolefin layer are laminated. In this case, each of the layers is transparent and the silicon oxide layer is disposed on the side of the protective layer. The protective layer and the composite film, and the composite film and the heat-sealable polyolefin layer are laminated by an adhesive layer, respectively. |