US 12,275,878 B2
Foldable backplate film manufacturing method
Hui Je Lee, Daejeon (KR); Hyun Cheol Kim, Daejeon (KR); In Hwan Jeon, Daejeon (KR); Sa Young Jung, Daejeon (KR); and Jin Ho Son, Daejeon (KR)
Assigned to LG CHEM, LTD., Seoul (KR)
Appl. No. 18/254,770
Filed by LG CHEM, LTD., Seoul (KR)
PCT Filed Feb. 21, 2022, PCT No. PCT/KR2022/002495
§ 371(c)(1), (2) Date May 26, 2023,
PCT Pub. No. WO2022/182076, PCT Pub. Date Sep. 1, 2022.
Claims priority of application No. 10-2021-0025029 (KR), filed on Feb. 24, 2021.
Prior Publication US 2024/0018397 A1, Jan. 18, 2024
Int. Cl. C09J 7/40 (2018.01); B32B 3/30 (2006.01); B32B 7/06 (2019.01); B32B 7/12 (2006.01); B32B 27/08 (2006.01); B32B 27/28 (2006.01); B32B 37/00 (2006.01); B32B 37/12 (2006.01); B32B 38/00 (2006.01); B32B 43/00 (2006.01); C09J 7/25 (2018.01); C09J 7/29 (2018.01); C09J 7/38 (2018.01)
CPC C09J 7/403 (2018.01) [B32B 3/30 (2013.01); B32B 7/06 (2013.01); B32B 7/12 (2013.01); B32B 27/08 (2013.01); B32B 27/281 (2013.01); B32B 27/283 (2013.01); B32B 37/025 (2013.01); B32B 37/12 (2013.01); B32B 38/0004 (2013.01); B32B 43/006 (2013.01); C09J 7/25 (2018.01); C09J 7/29 (2018.01); C09J 7/38 (2018.01); C09J 7/401 (2018.01); B32B 2307/20 (2013.01); B32B 2307/54 (2013.01); B32B 2307/7376 (2023.05); B32B 2307/748 (2013.01); C09J 2301/124 (2020.08); C09J 2301/162 (2020.08); C09J 2301/18 (2020.08); C09J 2301/302 (2020.08); C09J 2479/086 (2013.01); C09J 2483/005 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A method for manufacturing a foldable backplate film comprising steps of:
preparing a foldable backplate comprising a base film and a pressure-sensitive adhesive layer provided on one side of the base film;
attaching a first release film to the opposite side of the side of the first pressure-sensitive adhesive layer that is in contact with the base film;
attaching a protective film to the opposite side of the side of the base film that is in contact with the pressure-sensitive adhesive layer;
half-cutting the foldable backplate in a direction from the first release film to the protective film along a cutting line dividing a body part and a pad part;
peeling the first release film from the pressure-sensitive adhesive layer after the half-cutting step; and
attaching a non-cut second release film to the position where the first release film has been peeled off to manufacture the foldable backplate film.