US 11,916,241 B2
Primer layer composition, secondary battery pouch film using the same, and method of manufacturing the same
Nok Jung Song, Seoul (KR); Han Chul Park, Seoul (KR); Hee Sik Han, Gyeonggi-do (KR); and Ji Min Lee, Gyeonggi-do (KR)
Assigned to Youlchon Chemical Co., Ltd., Seoul (KR)
Filed by Youlchon Chemical Co., Ltd., Seoul (KR)
Filed on Oct. 29, 2020, as Appl. No. 17/083,637.
Claims priority of application No. 10-2020-0113048 (KR), filed on Sep. 4, 2020.
Prior Publication US 2022/0077439 A1, Mar. 10, 2022
Int. Cl. H01M 50/183 (2021.01); C08K 5/00 (2006.01); C08L 23/12 (2006.01); H01M 4/04 (2006.01); H01M 50/124 (2021.01)
CPC H01M 50/183 (2021.01) [C08L 23/12 (2013.01); H01M 4/0407 (2013.01); H01M 50/124 (2021.01); C08K 5/0025 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A method for manufacturing a secondary battery pouch film having at least an outer layer, a metal layer, a primer layer, and a sealant layer, or at least an outer layer, a metal layer, a primer layer, a melt-extrusion resin layer, and a sealant layer in this order, the method comprising:
a drying process of applying and heating a primer layer composition on the metal layer so as to dry the primer layer composition and cure at least a part of the primer layer composition,
wherein, as the primer layer, an organic solvent-based emulsion composition is used, a solvent of the organic solvent-based emulsion composition consisting of an organic solvent,
wherein the organic solvent-based emulsion composition comprises an acid-modified polypropylene and a curing agent and has a curing start temperature of 135° C. to 150° C. and a drying process temperature of 135° C. to 150° C., and
wherein, the method is not subjected to a thermal lamination process when laminating with the sealant layer.