Coating head, coating apparatus, and coating method

Patent metadata

Field	Value
Publication number	US-11707759-B2
Application number	US-202117445735-A
Country	US
Kind code	B2
Filing date	Aug 24, 2021
Priority date	Mar 9, 2020
Publication date	Jul 25, 2023
Grant date	Jul 25, 2023

Abstract

According to one embodiment, a coating head includes a coating bar, nozzles, a first member, second members, third members, elastic members, and a position controller. The coating bar faces a coating member. The nozzles supply a liquid toward the coating bar. The first member includes first recesses. A portion of the nozzles is between the first recesses and the third members. The portion of the nozzles and the third members are fixed to the first member by the second members. The elastic members are located in at least first, second, or third positions. The first position is between the third members and the second members. The second position is between the portion of the first recesses and the nozzles. The third position is between the portion of the nozzles and the third members. The position controller controls a relative position between the coating bar and the nozzles.

First claim

What is claimed is:

1. A coating head, comprising:
a coating bar configured to face a coating member;
a plurality of nozzles configured to supply a liquid toward the coating bar;
a first member including a plurality of first recesses,
a plurality of second members;
a plurality of third members, at least a portion of one of the nozzles being between one of the first recesses and one of the third members, the at least a portion of the one of the nozzles and the one of the third members being fixed to the first member by one of the second members;
a plurality of elastic members, one of the elastic members being located in at least one of a first position, a second position, or a third position, the first position being between the one of the third members and the one of the second members, the second position being between the at least a portion of the one of the first recesses and the one of the nozzles, the third position being between the at least a portion of the one of the nozzles and the one of the third members; and
a position controller controlling a relative position between the coating bar and the nozzles.

2. The head according to claim 1 , wherein
the nozzles contact the coating bar.

3. The head according to claim 1 , wherein
the one of the first recesses extends along a direction in which the at least a portion of the one of the nozzles extends.

4. The head according to claim 1 , wherein
a surface of the coating bar includes an unevenness, and
a maximum height Rz of the unevenness is not less than 5 μm and not more than 50 μm.

5. The head according to claim 1 , wherein
the elastic members include a spring.

6. The head according to claim 1 , wherein
the position controller includes an actuator.

7. The head according to claim 1 , wherein
at least a portion of the one of the first recesses is curved.

8. The head according to claim 1 , wherein
the one of the nozzles includes an end surface dispensing the liquid, and
an angle between the end surface and an extension direction of the one of the nozzles in which the one of the nozzles extends is not less than 80 degrees and not more than 100 degrees.

9. The head according to claim 1 , wherein
the one of the nozzles includes a nozzle portion and a base part,
the nozzle portion is detachable from the base part,
the liquid is supplied to the base part, and
the liquid is dispensed from the nozzle portion.

10. The head according to claim 9 , wherein
the nozzle portion is between the one of the first recesses and the one of the third members, and
the base part is not between the one of the first recesses and the one of the third members.

11. The head according to claim 1 , wherein
the coating bar is configured to form a meniscus of the liquid between the coating bar and the coating member.

12. The head according to claim 1 , wherein
the one of the third members includes a second recess, and
the at least a portion of the one of the nozzles is between the second recess and the one of the first recesses.

13. The head according to claim 1 , wherein
the position controller includes:
a first holder holding the coating bar; and
a second holder holding the nozzles,

at least one of the first holder or the second holder is configured to apply stress to at least one of the coating bar or the nozzles, and
the stress has at least one of an orientation from the coating bar toward the nozzles or an orientation from the nozzles toward the coating bar.

14. The head according to claim 13 , wherein
at least one of the nozzles reversibly bends according to the stress.

15. A coating apparatus, comprising:
a coating head including a coating bar configured to face a coating member, a plurality of nozzles configured to supply a liquid toward the coating bar, a first member including a plurality of first recesses, a plurality of second members, a plurality of third members, at least a portion of one of the nozzles being between one of the first recesses and one of the third members, the at least a portion of the one of the nozzles and the one of the third members being fixed to the first member by one of the second members, a plurality of elastic members, one of the elastic members being located in at least one of a first position, a second position, or a third position, the first position being between the one of the third members and the one of the second members, the second position being between the at least a portion of the one of the first recesses and the one of the nozzles, the third position being between the at least a portion of the one of the nozzles and the one of the third members, and a position controller controlling a relative position between the coating bar and the nozzles;
a supplier supplying the liquid to the nozzles; and
a coating member holder holding the coating member and moving the coating member relative to the coating head.

16. The apparatus according to claim 15 , wherein
the coating member includes a roll-shaped film, and
the coating member holder includes:
a first holding mechanism holding a first portion of the roll-shaped film; and
a second holding mechanism holding a second portion of the roll-shaped film.

17. The apparatus according to claim 15 , wherein
the supplier includes a plurality of pumps, and
a number of the nozzles is an integer multiple of the pumps.

18. The apparatus according to claim 15 , wherein
a position of at least a portion of the coating member holder is higher than a position of the supplier.

19. The apparatus according to claim 15 , further comprising:
a liquid sensor detecting a supply rate of the liquid to the plurality of nozzles; and
a supply controller controlling the supplier based on the supply rate detected by the liquid sensor.

20. A coating method, comprising:
coating a liquid onto a coating member by using a coating head, the coating head including a coating bar configured to face the coating member, a plurality of nozzles configured to supply the liquid toward the coating bar, first member including a plurality of first recesses, a plurality of second members, a plurality of third members, at least a portion of one of the nozzles being between one of the first recesses and one of the third members, the at least a portion of the one of the nozzles and the one of the third members being fixed to the first member by one of the second members, a plurality of elastic members, one of the elastic met bergs being located in at least one of a first position, a second position, or a third position, the first position being between the one of the third members and the one of the second members, the second position being between the at least a portion of the one of the first recesses and the one of the nozzles, the third position being between the at least a portion of the one of the nozzles and the one of the third members, and a position controller controlling a relative position between the coating bar and the nozzles.

Assignees

• Toshiba Kk
• Toshiba Energy Systems & Solutions Corp

Inventors

• Naito Katsuyuki
• Shida Naomi
• Nara Kohei
• Kokubo Takahiro
• Saita Yutaka

Classifications

• B05C1/0826 Primary

  the work being a web or sheets (B05C1/0804, B05C1/0808, B05C1/0813, B05C1/0817, B05C1/0821, B05C1/10, B05C1/12 take precedence) · CPC title

• B05C1/04

  for applying liquid or other fluent material to work of indefinite length {(B05C1/003 takes precedence)} · CPC title

• B05C1/0804 Primary

  the material being applied without contact with the roller · CPC title

• B05C1/0813

  characterised by means for supplying liquid or other fluent material to the roller · CPC title

• B05C1/0873

  Controlling means responsive to conditions of the liquid or other fluent material, of the ambient medium, of the roller or of the work · CPC title