| 摘要 |
PURPOSE:To prevent thermal fogging by molding a laminated film to a single- ply packaging bag and housing a rolled photosensitive material into this packaging bag, then fixing the bottom of the packaging bag by using a hot melt adhesive agent at a prescribed temp. CONSTITUTION:While the laminated film 1 is formed to the single-ply packaging bag 6, the rolled photosensitive material 2 is housed into this packaging bag 5 and the bottom 7 of the packaging bag 5 is fixed by using the hot melt adhesive agent having 70-110 deg.C softening temp. The hot melt adhesive agent 8 to be used is more particularly preferably an ethylene/vinyl acetate copolymer hot melt adhesive agent in terms of a low price, easy availability, etc. The laminated film to be used for the packaging bag 5 is satisfactory if said film has various characteristics such as light shieldability and physical strength as a packaging material; for example, the laminated film consisting of a light shieldable heat sealing layer, metallic layer and heat resistant flexible sheet layer is more preferable. The thermal fogging of the inside surface of the packaging bag is thereby prevented. |
