Patent ID: 11867873
Assignee: ZEON CORPORATION
Field: Optics (Instruments)
Classification: CPC G  B  C | IPC B  C  G

Claim 11:
12. A method of applying a peelable masking film onto an optical film, the method comprising:
preparing an optical film made of an alicyclic structure-containing polymer resin,
mixing a crosslinkable polymer and solid particles to obtain an aqueous resin composition in a liquid state, the crosslinkable polymer having a glass transition temperature of 15° C. or higher and 40° C. or lower and having a particle shape having a volume-average particle diameter of 500 nm or less,
applying the aqueous resin composition onto at least one surface of the optical film, and
curing the aqueous resin composition on the optical film to form the peelable masking film as a single layer and an outermost layer having a thickness of 10 μm or more and 25 μm or less in direct contact with the optical film and having a peeling strength from the optical film layer of 0.005 N/50 mm or more and 0.05 N/50 mm or less.