US 12,440,864 B2
Slot die coating device to which negative pressure generation is applied and method of using the same
Shin Jang, Chungcheongnam-do (KR); Jun Tae Kim, Gyeonggi-do (KR); Ji Young Kim, Gyeonggi-do (KR); Jin Seong Choi, Gyeonggi-do (KR); and Hyo Jong Kim, Gyeonggi-do (KR)
Assigned to Hyundai Motor Company, Seoul (KR); and Kia Corporation, Seoul (KR)
Filed by Hyundai Motor Company, Seoul (KR); and Kia Corporation, Seoul (KR)
Filed on Nov. 19, 2022, as Appl. No. 17/990,674.
Claims priority of application No. 10-2021-0188166 (KR), filed on Dec. 27, 2021.
Prior Publication US 2023/0201862 A1, Jun. 29, 2023
Int. Cl. B05C 5/02 (2006.01); B05D 1/26 (2006.01); H10N 30/20 (2023.01); H10N 30/85 (2023.01)
CPC B05C 5/0258 (2013.01) [B05D 1/26 (2013.01); H10N 30/206 (2023.02); H10N 30/85 (2023.02)] 17 Claims
OG exemplary drawing
 
1. A slot die coating device comprising:
a first main body comprising a first surface;
a second main body comprising a second surface and located to be spaced apart from the first surface;
a head lip that is positioned between the first surface and the second surface; and
a negative pressure generation unit installed on at least any one of the first main body and the second main body, and configured to generate a negative pressure in the head lip,
wherein the first main body further comprises a first protrusion unit extended a certain length from the first surface; and
the second main body further comprises a second protrusion unit extended a certain length in the same direction as the first protrusion from the second surface,
further comprising:
(a) a cavity formed to be recessed at a location spaced apart from the negative pressure generation unit, and in communication with the head lip, and having a coating agent therein; and
(b) a discharge unit formed between the first protrusion unit and the second protrusion unit, the discharge unit is in communication with the head lip,
wherein the negative pressure generation unit is directly in communication with the head lip,
wherein the negative pressure generation unit is embedded in the first surface and the second surface of the head lip.