US 12,214,374 B2
Coating apparatus and coating method
Masanao Obori, Otsu (JP)
Assigned to Toray Industries, Inc., Tokyo (JP)
Appl. No. 17/919,348
Filed by Toray Industries, Inc., Tokyo (JP)
PCT Filed Apr. 16, 2021, PCT No. PCT/JP2021/015758
§ 371(c)(1), (2) Date Oct. 17, 2022,
PCT Pub. No. WO2021/215367, PCT Pub. Date Oct. 28, 2021.
Claims priority of application No. 2020-077094 (JP), filed on Apr. 24, 2020.
Prior Publication US 2023/0149967 A1, May 18, 2023
Int. Cl. B05C 1/08 (2006.01); B05D 1/28 (2006.01); B05D 7/04 (2006.01)
CPC B05C 1/0865 (2013.01) [B05C 1/0813 (2013.01); B05C 1/0834 (2013.01); B05D 1/28 (2013.01); B05D 7/04 (2013.01); B05D 2252/02 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A coating apparatus comprising:
a container configured to accumulate a coating liquid, the container including an upstream side cover and a downstream side cover dividedly arranged in an upper part of the container on an upstream side and a downstream side in a running direction of a web to form an opening part extending in a longitudinal direction of the container;
a rotatable coating bar arranged at the opening part so that the coating bar has a clearance between the coating bar and a downstream side end of the upstream side cover and a clearance between the coating bar and an upstream side end of the downstream side cover and a rotation axis direction of the coating bar is directed in a longitudinal direction of the container;
a plurality of rotatable supports intermittently arranged along the rotation axis direction of the coating bar, the supports supporting the coating bar from below in the container; and
an in-liquid cover extending in the longitudinal direction of the container, the in-liquid cover being arranged between the downstream side cover and the supports, wherein
in a top view of the coating apparatus, a first range of an upstream side end of the in-liquid cover is overlapped with the supports and is defined as an overlapped range, and a second range of the upstream side end of the in-liquid cover is at least a portion of a range between adjacent overlapped ranges, and wherein
a clearance between the upstream side end of the in-liquid cover and a surface of the coating bar is wider in the second range than in each of the adjacent overlapped ranges.