Pressure-sensitive adhesive layer, pressure-sensitive adhesive film, and optical device
AssigneeNitto Denko Corporation
InventorsKayo Shimokawa, Kenichi Okada, Toshitaka Takahashi, Yoshiaki Kitani, Taiki Shimokuri, Yousuke Makihata
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Abstract
A pressure-sensitive adhesive layer is obtained by applying and drying an aqueous dispersion type pressure-sensitive adhesive composition. On a surface of the pressure-sensitive adhesive layer, the number of a concave portion having a depth in a thickness direction of 0.2 to 20 μm and a maximum length along the surface of 1 to 10 mm is 5 or less per 1 m2.
Claims8
A pressure-sensitive adhesive layer obtained by applying and drying an aqueous dispersion type pressure-sensitive adhesive composition, wherein
- on a surface of the pressure-sensitive adhesive layer, the number of a concave portion having a depth in a thickness direction of 0.2 to 20 μm and a maximum length along the surface of 1 to 10 mm is 5 or less per 1 m2.
A pressure-sensitive adhesive film comprising:
- a substrate and
- a pressure-sensitive adhesive layer laminated on a surface of the substrate, wherein
- the pressure-sensitive adhesive layer is obtained by applying and drying an aqueous dispersion type pressure-sensitive adhesive composition, and
- on the surface of the pressure-sensitive adhesive layer, the number of a concave portion having a depth in a thickness direction of 0.2 to 20 μm and a maximum length along the surface of 1 to 10 mm is 5 or less per 1 m2.
An optical device comprising:
- an optical film and
- a pressure-sensitive adhesive layer laminated on a surface of the optical film, wherein
- the pressure-sensitive adhesive layer is obtained by applying and drying an aqueous dispersion type pressure-sensitive adhesive composition, and on the surface of the pressure-sensitive adhesive layer, the number of a concave portion having a depth in a thickness direction of 0.2 to 20 μm and a maximum length along the surface of 1 to 10 mm is 5 or less per 1 m2.
Dependencies are inferred from the claim text.