Coating method and apparatus
AssigneeFuji Photo Film Co., Ltd.
InventorsToshihiro Mandai, Satoshi Nagano
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Abstract
The present invention provides a coating method for coating one or more layers on a surface of a continuously moving belt-like substrate. The method includes a cleaning step of maintaining a cleanliness level of class 1000 or less near the substrate before a coating step. According to the present invention, any adhesion of extraneous material, dirt, dust and the like to a continuously moving web or coating layer surface can be prevented to reduce coating defects such as streak development.
Claims23
A coating method for coating one or more layers on a surface of a continuously moving belt-like substrate, the method comprising:
- a cleaning step of maintaining a cleanliness level of class 1000 or less near the substrate before a coating step.
A coating apparatus for sequentially coating two or more layers to a surface of a continuously moving belt-like substrate by successively coating a second and later layers after coating and drying a first layer without winding up the first layer, the coating apparatus comprising:
- a plurality of coaters which sequentially coats two or more layers to the substrate;
- a drying device which is mounted downstream of each of the plurality of coaters to dry the coated layers formed on the substrate;
- and
- a cleaning device which is disposed upstream of at least the coaters that coats the second and later layers among the plurality of coaters to maintain a cleanliness level of class 1000 or less near the substrate.
Dependencies are inferred from the claim text.