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US 5,634,789 AGranted
Method of preforming heat treatment on a wound roll film
AssigneeFuji Photo Film Co., Ltd.
InventorsTakashi Nawano, Daisuke Fujikura, Osamu Nagayama
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AssigneeFuji Photo Film Co., Ltd.
InventorsTakashi Nawano, Daisuke Fujikura, Osamu Nagayama
Estimating the term…
Knurling is applied to both side edge portions of a high-molecular film and then the film is wound up. A packing agent is applied to the knurled portions to enclose air at the time of winding in spaces between wound film layers and the film is put into an annealing isothermal chamber while contact between the wound film layers is prevented by the air. Preferably, the high-molecular film is made to pass through a heating zone just before the winding so that the high-molecular film after heated is wound up. More preferably, the winding core used for winding is a hollow porous winding core and high-temperature pressurized air is blown out onto the film through the hollow porous cylindrical surface. In a method of performing heat treatment on a wound roll film in which annealing treatment is performed on a roll film obtained by winding a high-molecular film, comprising the steps of: enclosing a winding portion of a device in a box; keeping the inside of the box at a high temperature equal to that of an annealing chamber; heating the high-molecular film to a temperature equal to the temperature of the inside of the box just before winding and then winding the high-molecular film; and conveying the high-molecular film into an isothermal chamber for annealing treatment.
A method of performing heat treatment on a wound roll film in which a high-molecular film having two side knurled edge portions is wound and said wound roll film is subjected to annealing treatment, comprising the steps of:
A method of performing heat treatment on a wound roll film by annealing a roll film obtained by winding a high-molecular film, comprising the steps of:
A support for photographic light-sensitive material, said support comprising a high-molecular film formed from polyethylene terephthalate film, being wound around a winding core, and having two side knurled edge portions, said film prepared by a process comprising the steps of:
A support for photographic light-sensitive material, said support comprising a high-molecular film formed from polyethylene naphthalate film, being wound around a winding core, and having two side knurled edge portions, said film prepared by a process comprising the steps of:
A support for photographic light-sensitive material, said support comprising a high-molecular film formed from polyethylene terephthalate film, said film prepared by a process comprising the steps of:
A support for photographic light-sensitive material, said support comprising a high-molecular film formed from polyethylene naphthalate film, said film prepared by a process comprising the steps of:
A method of winding film, comprising the steps of:
A method of heating film, comprising the steps of:
A method of winding film comprising enclosing air in spaces between layers of said film by applying a packing agent to edge portions of said film at a time of winding said film around a winding core, whereby the enclosed air prevents the layers of said film from contacting one another.
A method of heating film, comprising the steps of:
Dependencies are inferred from the claim text.