Packaging material for photosensitive materials
AssigneeFuji Photo Film Co., Ltd.
InventorsMutsuo Akao, Takuichi Komatsu
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Abstract
The packaging materials for photosensitive materials having particular coextruded multilayers and a flexible sheet. According to the composition, the packaging material is excellent in curl resistance, in physical strength particularly tear strength or in tearability by hand. These packaging materials have various properties necessary for packaging photosensitive materials, are excellent in bag-making ability for automatic bag-making machine.
Claims13
A packaging material for photosensitive materials comprising a coextruded multilayer film layer comprising a light-shielding ethylene copolymer resin film layer containing a light-shielding material and a high Young's modulus thermoplastic resin film layer having a Young's modulus of more than 40 kg/mm.sup.2 and a hygroscopicity of less than the light shielding ethylene copolymer resin film layer, and a flexible sheet layer laminated through an adhesive layer on the side of the high Young's modulus thermoplastic resin film layer.
Dependencies are inferred from the claim text.