Dual slot die for simultaneously performing electrode slurry coating and insulating solution coating and coating method using the same
AssigneeLG Energy Solution, Ltd.
InventorsDoo Hyun Lee, Jae Huoung Son, Chang Bum Ahn
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Abstract
The present invention relates to a dual slot die and a coating method using the same, wherein there is the advantage that electrode slurry coating and insulating solution coating simultaneously proceed through a dual slot die to prevent the occurrence of electrode slurry sliding at the edge of the electrode slurry layer. An electrode slurry layer and an insulating layer can be formed on a current collector sheet in a multi-line manner by including a shim having a structure formed with multiple discharge lines capable of discharging the electrode slurry or insulating solution in multiple lines, thereby increasing process efficiency.
Claims8
A dual slot die comprising:
- a lower block, an intermediate block, and an upper block, the dual slot die further including:
- a UV lamp disposed on the dual slot die;
- a lower shim positioned between the lower block and the intermediate block;
- an upper shim positioned between the intermediate block and the upper block;
- a lower manifold formed in the lower block to store an electrode slurry;
- and
- an upper manifold formed in the upper block to store an insulating solution having an UV polymerization initiator,
- wherein the dual slot die has a structure in which the electrode slurry is stored in the lower manifold and discharged by an electrode slurry discharge line in the lower shim to form an electrode slurry layer, and the insulating solution is stored in the upper manifold and discharged by insulating solution discharge lines in the upper shim to form an insulating solution layer,
- wherein the insulating solution discharge lines include a first insulating solution discharge line and a second insulating solution discharge line,
- wherein the dual slot die and the UV lamp are stationary, and
- wherein the UV lamp is configured to irradiate the insulating solution layer creating a wall of an outer portion of the electrode slurry that prevents sliding of the electrode slurry layer.
Dependencies are inferred from the claim text.