Abstract: Curling of a laminated film is efficiently corrected. The water vapor is brought into contact with the base layer on the outside of the laminated film in a curled state during the first phase transition process. The glass transition temperature of the base layer is lowered. In the base layer, phase transition from the glass state to the rubber state occurs. Supply of the water vapor to the base layer is stopped in the second phase transition process. In the base layer, phase transition from the rubber state to the glass state occurs. The phase transition creates curling that can correct the original curl. The original curl can be corrected by continuously carrying out the first phase transition process and the second phase transition process. The cooling process for cooling the hard coating layer is carried out while the first phase transition process is carried out.

Abstract: Curling of a laminated film is efficiently corrected. The water vapor is brought into contact with the base layer on the outside of the laminated film in a curled state during the first phase transition process. The glass transition temperature of the base layer is lowered. In the base layer, phase transition from the glass state to the rubber state occurs. Supply of the water vapor to the base layer is stopped in the second phase transition process. In the base layer, phase transition from the rubber state to the glass state occurs. The phase transition creates curling that can correct the original curl. The original curl can be corrected by continuously carrying out the first phase transition process and the second phase transition process. The cooling process for cooling the hard coating layer is carried out while the first phase transition process is carried out.

Abstract: A method for coating, comprising the step of: coating with a coating solution using a slot die the surface of a substrate which is continuously running while being supported by a back-up roller, wherein the slot width d of the slot die is 250 ?m or less and the ratio of the slot length L to the slot width d, L/d, is 300 or more.

Abstract: The coating construction has flexibility corresponding to the number of layers of multiple coating layers, by which a multilayer coating film can be produced with small film thickness without adherence of dust to a film surface, a drying fault such as unevenness induced by drying-wind on the film surface, or a coating fault such as a level variation and a streak. The multilayer coating film has a coating surface state of high quality with coating thickness deviation of 3% or less. A coating device is constructed in which at least a feed roller, a coater and a dryer are integrally incorporated in a casing, and the coating device is given a function as an independent device, whereby the production apparatus of the multilayer coating film can be constructed by only appropriately placing as many coating devices as the number corresponding to the number of layers of the multiple coating layers formed on a web between a delivery device and a winder.

Abstract: A method for forming multiple coating layers produces a coating construction that has flexibility corresponding to the number of layers of multiple coating layers, by which a multilayer coating film can be produced with small film thickness without adherence of dust to a film surface, a drying fault such as unevenness induced by drying-wind on the film surface, or a coating fault such as a level variation and a streak. The multilayer coating film has a coating surface state of high quality with coating thickness deviation of 3% or less. In the method, a belt-like substrate is continuously fed. A coating/drying step follows, with multiple steps performed in a single unit. A plurality of coating layers are formed by sequentially performing the coating/drying step by multiple units. Finally, the belt-like substrate with the multiple coatings is continuously wound.

Abstract: In the gravure coating apparatus, while a bead portion of a coating liquid is formed between a roll surface of a gravure roll to which the coating liquid is excessively supplied and a web that runs continuously, the web is pressed on the gravure roll by using a backup roll, whereby a desired amount of the coating liquid is applied to the web, a liquid supply device having an inclined surface that is inclined downward toward the roll surface and a gap too narrow for the coating liquid to flow down between the roll surface and the inclined surface is provided at a position near the bead portion on the upstream side in the direction of rotation of the gravure roll so that the coating liquid flows down on the inclined surface and is supplied to the gravure roll. A liquid return of an excess coating liquid that is not used for coating in the bead portion is less liable to occur, so that a streak trouble on a coating surface formed on the web can be prevented from occurring.

Abstract: The coating construction has flexibility corresponding to the number of layers of multiple coating layers, by which a multilayer coating film can be produced with small film thickness without adherence of dust to a film surface, a drying fault such as unevenness induced by drying-wind on the film surface, or a coating fault such as a level variation and a streak. The multilayer coating film has a coating surface state of high quality with coating thickness deviation of 3% or less. A coating device is constructed in which at least a feed roller, a coater and a dryer are integrally incorporated in a casing, and the coating device is given a function as an independent device, whereby the production apparatus of the multilayer coating film can be constructed by only appropriately placing as many coating devices as the number corresponding to the number of layers of the multiple coating layers formed on a web between a delivery device and a winder.

Abstract: In the gravure coating apparatus, while a bead portion of a coating liquid is formed between a roll surface of a gravure roll to which the coating liquid is excessively supplied and a web that runs continuously, the web is pressed on the gravure roll by using a backup roll, whereby a desired amount of the coating liquid is applied to the web, a liquid supply device having an inclined surface that is inclined downward toward the roll surface and a gap too narrow for the coating liquid to flow down between the roll surface and the inclined surface is provided at a position near the bead portion on the upstream side in the direction of rotation of the gravure roll so that the coating liquid flows down on the inclined surface and is supplied to the gravure roll. A liquid return of an excess coating liquid that is not used for coating in the bead portion is less liable to occur, so that a streak trouble on a coating surface formed on the web can be prevented from occurring.