US 12,303,932 B2
Multi-slot die coater
Taek-Soo Lee, Daejeon (KR); Shin-Wook Jeon, Daejeon (KR); Sang-Hoon Choy, Daejeon (KR); and Young-Gon Kim, Daejeon (KR)
Assigned to LG Energy Solution, Ltd., Seoul (KR)
Filed by LG Energy Solution, Ltd., Seoul (KR)
Filed on Oct. 23, 2024, as Appl. No. 18/924,098.
Application 18/924,098 is a continuation of application No. 17/922,184, granted, now 12,157,140, previously published as PCT/KR2021/010694, filed on Aug. 11, 2021.
Claims priority of application No. 10-2020-0104884 (KR), filed on Aug. 20, 2020; and application No. 10-2020-0104885 (KR), filed on Aug. 20, 2020.
Prior Publication US 2025/0041894 A1, Feb. 6, 2025
This patent is subject to a terminal disclaimer.
Int. Cl. B05C 5/02 (2006.01); H01M 4/04 (2006.01)
CPC B05C 5/027 (2013.01) [B05C 5/0254 (2013.01); H01M 4/0404 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A multi-slot die coater comprising:
a lower slot and an upper slot;
a lower die block;
an intermediate die block positioned on the lower die block such that the lower slot is formed between the intermediate die block and the lower die block; and
an upper die block positioned on the intermediate die block such that the upper slot is formed between the upper die block and the intermediate die block,
wherein the lower die block, the intermediate die block and the upper die block include a lower die lip, an intermediate die lip and an upper die lip that form front ends thereof, respectively,
wherein the multi-slot die coater further comprises a fixing block on rear surfaces of the die blocks at a side opposite the front end, the fixing block bolted to the rear surfaces of at least two of the die blocks to couple the two die blocks,
wherein the fixing block includes a step portion which protrudes toward the front end with respect to a reference plane in contact with the rear surface of any one of the two die blocks and the rear surface of the other die block among the two die blocks comes into contact with the step portion, to form a step between the rear surface of the two die blocks coupled to the fixing block, and
wherein the fixing block couples the upper die block to the intermediate die block, the step portion comes into contact with the rear surface of the upper die block, and the upper die block is shorter in length than the intermediate die block and the lower die block.