Abstract: A coating method for forming a plurality of layers over a continuously traveling band-shaped substrate, including the steps of: forming a lower layer by coating a first coating liquid, and forming an upper layer over the lower layer by coating a second coating liquid including a composition substantially identical to or different from a composition of the first coating liquid; and applying an undercoating liquid to an uncoated portion before coating the second coating liquid when the uncoated portion is generated during forming the lower layer.

Abstract: Provided is a coating apparatus for coating with coating liquid a surface of a strip-shaped body carried in a fixed direction includes, a primary bar extending along a width direction of a carrying plane, which is a carrying path of the strip-shaped body, a secondary bar extending in parallel with and on the downstream side of the primary bar, and a between-bars liquid reservoir disposed between the primary and secondary bars for storing the coating liquid therein at the time of coating. Conditions are set so that relationship W2<W1 is formed between a coating amount W1 of the coating liquid at the primary bar and a coating amount W2 of the coating liquid after the strip-shaped body has passed through the secondary bar. A coating apparatus is also provided, in which the secondary bar contacts the strip-shaped body before the primary bar at the time of starting coating.

Abstract: A coating apparatus and coating method include a device for conveying an object to be coated; a coating device which is disposed in a vicinity of a conveyed surface of the object, and which discharges a coating liquid, and which forms a bridge of the liquid between the device and the object which is conveyed by the device for conveying an object to be coated, and which coats the liquid on at least one surface of the object; and a gas stream blowing device which, immediately after starting of coating, blows out a gas from a direction substantially opposite to a object conveying direction, toward a portion of the object where coating starts.

Abstract: A coating apparatus comprising a forward bar, a liquid feed passage and a metering device for a coating liquid. The forward bar rotates about its axis in the same direction as the traveling direction of a continuously traveling band-shaped web while touching the web. When coating the web with the coating liquid, the liquid feed passage feeds the coating liquid to an area between the upstream side of the forward bar and the web with respect to the traveling direction of the web. The metering device is arranged on the downstream side of the forward bar for metering the coating liquid to a predetermined coating thickness as applied to the web by the forward bar.

Abstract: Provided is a coating apparatus for coating with coating liquid a surface of a strip-body carried in a fixed direction includes, a primary bar extending along a width direction of a carrying plane, which is a carrying path of the strip-body, a secondary bar extending in parallel with and on the downstream side of the primary bar, and a between-bars liquid reservoir disposed between the primary and secondary bars for storing the coating liquid therein at the time of coating. Conditions are set so that relationship W2<W1 is formed between a coating amount W1 of the coating liquid at the primary bar and a coating amount W2 of the coating liquid after the strip-shaped body has passed through the secondary bar. A coating apparatus is also provided, in which the secondary bar contacts the strip-body before the primary bar at the time of starting coating.

Abstract: A coating apparatus comprising a forward bar, a liquid feed passage and a metering device for a coating liquid. The forward bar rotates about its axis in the same direction as the traveling direction of a continuously traveling band-shaped web while touching the web. When coating the web with the coating liquid, the liquid feed passage feeds the coating liquid to an area between the upstream side of the forward bar and the web with respect to the traveling direction of the web. The metering device is arranged on the downstream side of the forward bar for metering the coating liquid to a predetermined coating thickness as applied to the web by the forward bar.

Abstract: A coating apparatus and coating method include a device for conveying an object to be coated; a coating device which is disposed in a vicinity of a conveyed surface of the object, and which discharges a coating liquid, and which forms a bridge of the liquid between the device and the object which is conveyed by the device for conveying an object to be coated, and which coats the liquid on at least one surface of the object; and a gas stream blowing device which, immediately after starting of coating, blows out a gas from a direction substantially opposite to a object conveying direction, toward a portion of the object where coating starts.

Abstract: A coating apparatus and coating method include a device for conveying an object to be coated; a coating device which is disposed in a vicinity of a conveyed surface of the object, and which discharges a coating liquid, and which forms a bridge of the liquid between the device and the object which is conveyed by the device for conveying an object to be coated, and which coats the liquid on at least one surface of the object; and a gas stream blowing device which, immediately after starting of coating, blows out a gas from a direction substantially opposite to a object conveying direction, toward a portion of the object where coating starts.

Abstract: A coating device is disclosed which is provided with a first side bar, which extends along a transverse direction of a conveyance plane, which is a conveyance path of a belt body, and a second side bar, which is located at a downstream side of the first side bar. Also provided are a channel, which supplies a liquid at an upstream side of the first side bar, and a liquid-pooling section, which accumulates the liquid during coating of the liquid and is located between the first side bar and the second side bar. Also disclosed is a method which uses this coating device to coat a liquid on a belt body which is conveyed at high speed.

Abstract: A coating apparatus and method are disclosed in which even if poor coating occurs in a lower-layer, no poor coating occurs in an upper-layer formed on the lower-layer. A pre-wet liquid coating device is disposed between a first coating device at the upstream side of a support web conveying direction, and a second coating device disposed at the downstream side. When an uncoated portion is formed by the first coating device, a pre-wet liquid is coated by a pre-wet liquid coating device, and the coating liquid can be reliably coated by the second coating device. When the pre-wet liquid coating device is removed from the support web, first, the pre-wet liquid coating device is brought into liquid-running out state, and thereafter, removed from the support web. Accordingly, the pool of pre-wet liquid is eliminated and occurrence of a thickly coated portion on the support web can be prevented.

Abstract: Provided is a coating apparatus for coating with coating liquid a surface of a strip-shaped body carried in a fixed direction includes, a primary bar extending along a width direction of a carrying plane, which is a carrying path of the strip-shaped body, a secondary bar extending in parallel with and on the downstream side of the primary bar, and a between-bars liquid reservoir disposed between the primary and secondary bars for storing the coating liquid therein at the time of coating. Conditions are set so that relationship W2<W1 is formed between a coating amount W1 of the coating liquid at the primary bar and a coating amount W2 of the coating liquid after the strip-shaped body has passed through the secondary bar. A coating apparatus is also provided, in which the secondary bar contacts the strip-shaped body before the primary bar at the time of starting coating.

Abstract: A coating apparatus and method are disclosed in which even if poor coating occurs in a lower-layer, no poor coating occurs in an upper-layer formed on the lower-layer. A pre-wet liquid coating device is disposed between a first coating device at the upstream side of a support web conveying direction, and a second coating device disposed at the downstream side. When an uncoated portion is formed by the first coating device, a pre-wet liquid is coated by a pre-wet liquid coating device, and the coating liquid can be reliably coated by the second coating device. When the pre-wet liquid coating device is removed from the support web, first, the pre-wet liquid coating device is brought into liquid-running out state, and thereafter, removed from the support web. Accordingly, the pool of pre-wet liquid is eliminated and occurrence of a thickly coated portion on the support web can be prevented.

Abstract: Provided is a coating apparatus for coating with coating liquid a surface of a strip-shaped body carried in a fixed direction includes, a primary bar extending along a width direction of a carrying plane, which is a carrying path of the strip-shaped body, a secondary bar extending in parallel with and on the downstream side of the primary bar, and a between-bars liquid reservoir disposed between the primary and secondary bars for storing the coating liquid therein at the time of coating. Conditions are set so that relationship W2<W1 is formed between a coating amount W1 of the coating liquid at the primary bar and a coating amount W2 of the coating liquid after the strip-shaped body has passed through the secondary bar. A coating apparatus is also provided, in which the secondary bar contacts the strip-shaped body before the primary bar at the time of starting coating.

Abstract: A coating device is disclosed which is provided with a first side bar, which extends along a transverse direction of a conveyance plane, which is a conveyance path of a belt body, and a second side bar, which is located at a downstream side of the first side bar. Also provided are a channel, which supplies a liquid at an upstream side of the first side bar, and a liquid-pooling section, which accumulates the liquid during coating of the liquid and is located between the first side bar and the second side bar. Also disclosed is a method which uses this coating device to coat a liquid on a belt body which is conveyed at high speed.

Abstract: A coating apparatus comprising a forward bar, a liquid feed passage and a metering device for a coating liquid. The forward bar rotates about its axis in the same direction as the traveling direction of a continuously traveling band-shaped web while touching the web. When coating the web with the coating liquid, the liquid feed passage feeds the coating liquid to an area between the upstream side of the forward bar and the web with respect to the traveling direction of the web. The metering device is arranged on the downstream side of the forward bar for metering the coating liquid to a predetermined coating thickness as applied to the web by the forward bar.

Abstract: A coating apparatus and coating method include a device for conveying an object to be coated; a coating device which is disposed in a vicinity of a conveyed surface of the object, and which discharges a coating liquid, and which forms a bridge of the liquid between the device and the object which is conveyed by the device for conveying an object to be coated, and which coats the liquid on at least one surface of the object; and a gas stream blowing device which, immediately after starting of coating, blows out a gas from a direction substantially opposite to a object conveying direction, toward a portion of the object where coating starts.

Abstract: A coating device and a coating method capable of performing stable coating without causing defects such as a discontinuous coating film even if a web is run at a high speed. The coating device includes: a bar which is in contact with the web and can rotate about an axis; a liquid supply passage which is arranged adjacent to the bar at an upstream side from the bar and supplies a coating liquid to be applied to the web between the web and the bar to form a coating liquid reservoir when the web is being run; and an air-intrusion preventing unit which is arranged at an upstream side from the coating liquid reservoir and produces a liquid flow along a web surface to prevent an accompanying air film produced on the web surface from intruding into the coating reservoir when the web is being run.