Patent ID: 11959162
Assignee: TOYOBO CO., LTD.
Field: Surface technology, coating (Chemistry)
Classification: CPC C  B | IPC B  C

Claim 0:
1. A gas barrier laminated body, comprising a polymer substrate and an inorganic thin-film layer laminated onto at least one surface of the polymer substrate,
wherein the inorganic thin-film layer contains Al and Si, and a ratio of an Al content amount in the inorganic thin-film layer between before and after treatment of immersing the laminate into aqueous solution of hydrochloric acid that has concentration of 1 mol/L for one hour, satisfies Formula 1:

(Al Content Amount After Treatment)/(Al Content Amount Before Treatment)×100≥75, and

wherein the inorganic thin-film layer is a vapor-deposited thin-film layer that is made of composite oxide containing Al and Si.