Patent ID: 11891698
Assignee: C.UYEMURA & CO., LTD.
Field: Surface technology, coating (Chemistry)
Classification: CPC C  B | IPC B  C

Claim 5:
6. A paddle in a plate shape for stirring a surface treatment solution near a substrate by reciprocally moving the paddle with respect to the substrate, wherein the paddle is configured by integrally forming a plurality of square bars provided in one direction at regular intervals along the substrate, said plurality of square bars being integrally formed in the paddle, and a structure with a tapered or circular cross-section for decreasing a generation of turbulent flow while mixing a liquid is arranged on at least one side of an end of the paddle, wherein the square bars are located in a central region of the paddle to reduce vibration in the paddle and provide uniform stirring of the surface treatment solution, and wherein the structure is located in a region of the paddle that is outside of the central region; wherein a shape of the structure is a tapered shape or a circular shape in a cross section in a thickness direction of the structure; wherein each square bar of the plurality of square bars is provided with a curved surface with respect to the substrate in a cross section in a thickness direction of the plurality of square bars , and the curved surface is provided alternately facing left and facing right with respect to the substrate;
wherein each square bar of the plurality of square bars comprises a side of 5 to 10 mm in length; and wherein each square bar of the plurality of square bars includes a curved surface having a radius of 3 to 10 mm.