US 12,447,724 B2
Moisture and oxygen barrier laminate
Jae Il Han, Seoul (KR); and Chang Won Park, Seoul (KR)
Assigned to KOLON INDUSTRIES, INC., Seoul (KR)
Appl. No. 18/253,646
Filed by KOLON INDUSTRIES, INC., Seoul (KR)
PCT Filed Dec. 23, 2021, PCT No. PCT/KR2021/019725
§ 371(c)(1), (2) Date May 19, 2023,
PCT Pub. No. WO2022/154305, PCT Pub. Date Jul. 21, 2022.
Claims priority of application No. 10-2021-0004783 (KR), filed on Jan. 13, 2021.
Prior Publication US 2024/0009978 A1, Jan. 11, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. B32B 27/08 (2006.01); B32B 7/12 (2006.01); B32B 27/32 (2006.01); B32B 27/34 (2006.01); B32B 27/36 (2006.01); C08J 5/18 (2006.01); C08J 7/048 (2020.01)
CPC B32B 27/08 (2013.01) [B32B 7/12 (2013.01); B32B 27/32 (2013.01); B32B 27/34 (2013.01); B32B 27/36 (2013.01); C08J 5/18 (2013.01); C08J 7/048 (2020.01); B32B 2250/03 (2013.01); B32B 2250/24 (2013.01); B32B 2255/10 (2013.01); B32B 2255/20 (2013.01); B32B 2255/26 (2013.01); B32B 2255/28 (2013.01); B32B 2307/7244 (2013.01); B32B 2307/7246 (2013.01); B32B 2307/734 (2013.01); B32B 2307/7376 (2023.05); B32B 2307/748 (2013.01); B32B 2439/70 (2013.01); C08J 2367/02 (2013.01)] 14 Claims
 
1. A moisture and oxygen barrier laminate, comprising:
an inorganic barrier layer and a protective layer sequentially formed on one surface of a light-transmitting substrate,
wherein the light-transmitting substrate is a polyethylene terephthalate film,
wherein the change in water vapor transmission rate (WVTR) before and after 50 cycles of repeated twisting of the laminate using a Gelbo flex tester is 0.70 g/m2*day or less, and
wherein the change in water vapor transmission rate (WVTR) before and after retort processing at a temperature of 135° C. for 1 hour is 1.00 g/m2*day or less.