Coating device and coating method

Patent metadata

Field	Value
Publication number	US-10493485-B2
Application number	US-201615756710-A
Country	US
Kind code	B2
Filing date	Sep 6, 2016
Priority date	Sep 18, 2015
Publication date	Dec 3, 2019
Grant date	Dec 3, 2019

Abstract

A coating device has: a die head that is provided with a supply port into which a coating slurry is supplied, a manifold that stores the coating slurry, and a slit that dispenses the coating slurry; a supply pipe that is connected to the supply port of the die head; and a cover plate that is provided in the supply port or the supply pipe and that reduces the flow rate of the coating slurry at the center of a cross-section that is orthogonal to the direction in which the coating slurry in the supply port or the supply pipe flows into the die head.

First claim

What is claimed is:

1. A coating device comprising:
a die head including a supply port into which a coating slurry is supplied, a manifold that stores the coating slurry, and a slit that dispenses the coating slurry;
a supply pipe that is connected to the supply port of said die head; and
a cover plate that is provided in said supply port or said supply pipe and that reduces a flow rate of said coating slurry greater in a center than at a periphery of a cross-section that is orthogonal to a direction in which said coating slurry flows into said die head in said supply port or said supply pipe.

2. The coating device as set forth in claim 1 , wherein:
one end of said supply pipe is connected to said supply port and the other end is connected to a gate valve for switching between supplying and cutting off said coating slurry; and
said cover plate is arranged at a connection portion that is provided in said supply pipe or the interior of said supply pipe.

3. The coating device as set forth in claim 1 , wherein said cover plate comprises:
a frame-shaped edge portion provided along walls of a cross-section of said supply port or said supply pipe; and
two convex-shaped restraining plates that extend from said frame-shaped edge portion toward the center of the cross-section of said supply port or said supply pipe;
wherein:
said two restraining plates are arranged in linear symmetry with respect to a central axis that passes through the center of the cross-section of said supply port or said supply pipe; and
a first opening is formed in a region other than said frame-shaped edge portion and said two restraining plates in the cross-section of said supply port or said supply pipe.

4. The coating device as set forth in claim 3 , wherein said first opening is of a configuration in which a length along the walls of the cross-section of said supply port or said supply pipe is continuously smaller from a periphery toward the center of the cross-section of said supply port or said supply pipe.

5. The coating device as set forth in claim 3 , wherein second openings arranged in linear symmetry with respect to a central axis are formed in each of said two restraining plates.

6. The coating device as set forth in claim 5 , wherein a plurality of said second openings are formed in each of said two restraining plates.

7. The coating device as set forth in claim 3 , wherein each of said two restraining plates has a portion that is tilted toward said die head from the cross-section of said supply port or said supply pipe.

8. The coating device as set forth in claim 3 , wherein said cover plate is arranged in said supply port or said supply pipe such that a central axis thereof is parallel to a width direction of said slit.

9. The coating device as set forth in claim 1 , wherein said cover plate comprises:
a frame-shaped edge portion along walls of the cross-section of said supply port or said supply pipe;
a restraining plate that reduces the flow rate of said coating slurry in the center of the cross-section of said supply port or said supply pipe; and
a plurality of openings formed along said edge portion in periphery of said restraining plate.

10. The coating device as set forth in claim 1 , wherein an opening is arranged in a center portion in a width direction of said manifold, and said opening communicates with said supply port.

11. The coating device as set forth in claim 2 , wherein said cover plate comprises:
a frame-shaped edge portion provided along walls of a cross-section of said supply port or said supply pipe; and
two convex-shaped restraining plates that extend from said frame-shaped edge portion toward the center of the cross-section of said supply port or said supply pipe;
wherein:
said two restraining plates are arranged in linear symmetry with respect to a central axis that passes through the center of the cross-section of said supply port or said supply pipe; and
a first opening is formed in a region other than said frame-shaped edge portion and said two restraining plates in the cross-section of said supply port or said supply pipe.

12. The coating device as set forth in claim 11 , wherein said first opening is of a configuration in which a length along the walls of the cross-section of said supply port or said supply pipe is continuously smaller from a periphery toward the center of the cross-section of said supply port or said supply pipe.

13. The coating device as set forth in claim 4 , wherein second openings arranged in linear symmetry with respect to a central axis are formed in each of said two restraining plates.

14. The coating device as set forth in claim 13 , wherein a plurality of said second openings are formed in each of said two restraining plates.

15. The coating device as set forth in claim 4 , wherein each of said two restraining plates has a portion that is tilted toward said die head from the cross-section of said supply port or said supply pipe.

16. The coating device as set forth in claim 4 , wherein said cover plate is arranged in said supply port or said supply pipe such that a central axis is parallel to a width direction of said slit.

17. The coating device as set forth in claim 2 , wherein said cover plate comprises:
a frame-shaped edge portion along walls of the cross-section of said supply port or said supply pipe;
a restraining plate that reduces the flow rate of said coating slurry in the center of the cross-section of said supply port or said supply pipe; and
a plurality of openings formed along said edge portion in periphery of said restraining plate.

18. The coating device as set forth in claim 2 , wherein an opening is arranged in a center portion in a width direction of said manifold, and said opening communicates with said supply port.

Assignees

• Nec Energy Devices Ltd
• Envision Aesc Energy Devices Ltd

Inventors

• Hirai Masanori

Classifications

• B05C5/0254 Primary

  Coating heads with slot-shaped outlet (B05C5/0283 takes precedence) · CPC title

• B05C5/0245

  for applying liquid or other fluent material to a moving work of indefinite length, e.g. to a moving web (B05C5/0241, B05C5/0254, B05C5/027, B05C5/0283 take precedence) · CPC title

• B05D5/00

  Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures · CPC title

• B05D2252/02

  of indefinite length · CPC title

• B05D1/26

  performed by applying the liquid or other fluent material from an outlet device in contact with, or almost in contact with, the surface · CPC title