| 摘要 |
PURPOSE:To produce cheaply the wrapping body of a roll-type photosensitive material by using a shading multilayer inflation film obtd. by co-extruding a composite material composed of a specified polyolefin resin film layer as an inner layer and a straight chain low density polyethylene resin film layer as an outer layer, for the title body. CONSTITUTION:The multilayer inflation film 6 is obtd. by co-extruding the composite material composed of the polyolefin resin film contg. 0.5-70wt.% of a polyethylene resin having the density of >=0.936g/cm<3> as the inner layer 11, and the straight chain low density polyethylene resin film layer as the outer layer 12. The strip-like photosensitive material 15 is cylindrically wound, using the inflation film 6, and constitutes the wrapping body 21 by wrapping coaxially and cylindrically the photosensitive material so as to be allowed the inner layer 11 to contact with the photosensitive material 15. Thus, the photosensitive material is used most efficiently, sticking the photosensitive material to a material to be coated. The wrapping material has an anti-static property without generating blocking, and the wrapping body which has flexibility and a pinhole- resisting property and a low production cost and the excellent preserving and handling properties, is obtd. |
