Abstract: A package cover for packaging a lens-fitted photo film unit includes two side sheets covering two side faces of the lens-fitted photo film unit and an outer sheet covering front, rear, top and bottom faces thereof. The outer sheet is provided with edge portions formed of a plastic sheet which has heat-shrinkable property. After the side sheets are adhered to the lens-fitted photo film unit, the outer sheet is wrapped around it. The edge portions are shrunken by blowing a hot air thereon and fixedly stuck to edges of the side sheets.

Abstract: A lens-fitted photo film unit includes a housing and a wrapping wound about the housing in belt-like fashion. The housing is pre-loaded with unexposed photo film, and incorporates a taking lens and a shutter mechanism. The housing has a rear cover, which has recesses. Outer edges of the recesses are convex. Ridges are formed in the recesses for supporting the wrapping about the housing. Outer edges of the recesses are convex.

Abstract: A package cover for packaging a lens-fitted photo film unit includes two side sheets covering two side faces of the lens-fitted photo film unit and an outer sheet covering front, rear, top and bottom faces thereof. The outer sheet is provided with edge portions formed of a plastic sheet which has heat-shrinkable property. After the side sheets are adhered to the lens-fitted photo film unit, the outer sheet is wrapped around it. The edge portions are shrunken by blowing a hot air thereon and fixedly stuck to edges of the side sheets.

Abstract: A lens-fitted photo film unit includes a housing and a wrapping wound about the housing in belt-like fashion. The housing is pre-loaded with unexposed photo film, and incorporates a taking lens and a shutter mechanism. The housing has a rear cover, which has recesses. Outer edges of the recesses are convex. Ridges are formed in the recesses for supporting the wrapping about the housing. Outer edges of the recesses are convex.

Abstract: A lens-fitted photo film unit includes a housing and a wrapping wound about the housing in belt-like fashion. The housing is pre-loaded with unexposed photo film, and incorporates a taking lens and a shutter mechanism. The housing has a rear cover, which has recesses. Outer edges of the recesses are convex. Ridges are formed in the recesses for supporting the wrapping about the housing. Outer edges of the recesses are convex.

Abstract: A lens-fitted film unit has a light tight unit body made up of a main body assembly including at least an exposure mechanism and injection molded polystyrene front and rear covers between which the main body assembly is interposed and a looped body-band label fitted to the light tight unit body. The looped body-band label is made of a polypropylene film sheet only, or otherwise a polypropylene film sheet laminated with a polystyrene film sheet, which has a thickness less than approximately 60 .mu.m. The polypropylene film sheet has a tensile strength greater than approximately 7.times.10.sup.3 N/m and a bending moment less than approximately 3.times.10.sup.-4 N.multidot.m and has a weight less than 1.5% with respect to the total weight of the injection molded polystyrene front and rear covers.

Abstract: A lens-fitted photo film unit includes a housing and a wrapping wound about the housing in belt-like fashion. The housing is pre-loaded with unexposed photo film, and incorporates a taking lens and a shutter mechanism. The housing has a rear cover, which has recesses. Outer edges of the recesses are convex. Ridges are formed in the recesses for supporting the wrapping about the housing. Upper surfaces of the ridges are convex.

Abstract: A lens-fitted photographic film unit includes a unit body having at least a curved surface, such as a semi-cylindrical grip protruding forwardly from a front wall of the unit body. The unit body is wrapped in an outer case made of a sheet material. The sheet material is knurled or indented with a pattern in those portions of the outer case which are bent to cover the curved to impart flexibility thereto, or where the photographer grips the film unit.

Abstract: A packaging bag for wrapping a product with an outwardly extended projection has a side sealing portion and opposite end margin sealing portions. The side margin sealing portion is formed by heat-sealing lengthwise side margins of wrapping sheet into a shape of a rectangular tube. The end margin sealing portions are formed by heat-sealing opposite end margins of the rectangular tube. A notch is provided at an edge of the first end margin sealing portion near the side margin sealing portion to make an opening in the package by tearing at least the side margin sealing portion. A tray is provided for removing the product from the packaging bag and for protecting the outwardly extended projection of the product.

Abstract: A method for manufacturing film without melt fracturing in which a flow of a polymer solution having a high viscosity extruded from a die slit onto a running and spreading plane is extruded through the die slit together with a low viscosity solution with the polymer solution is covered by the low viscosity solution. In a first preferred embodiment, the low viscosity solution is passed through a confluence tube so as to surround the high viscosity solution in the form of a coaxial cylinder after which the two solutions are passed through a slit die which maintains the covering relationship between the high and low viscosity solutions. In another preferred embodiment, a slit die is provided which has a central passage into which the high viscosity fluid is supplied and side passages of a slit-like shape similar to that of the main passage into which the low viscosity solution is supplied.