Transparent film and use thereof
AssigneeNitto Denko Corporation
InventorsHiromoto Haruta, Kenjiro Niimi, Hironobu Machinaga, Yoshihiro Kitamura, Ikuya Kuzuhara
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Abstract
Provided are a transparent film of an excellent visual quality and a pressure-sensitive adhesive film including the transparent film. Transparent film includes base layer formed of transparent resinous material and top coat layer provided on its first face. Top coat layer has an average thickness Dave of 2 nm to 50 nm and the thickness deviation ΔD is 40% or smaller of the average thickness Dave.
Claims15
A transparent film comprising a base layer formed of a transparent resinous material and a top coat layer provided on a first face of the base layer,
- wherein the top coat layer has an average thickness Dave of 2 nm to 50 nm and a thickness deviation ΔD of 40% or smaller, with ΔD being expressed by the following equation:
- ΔD=(Dmax−Dmin)/Dave×100 (%)
- in which equation, Dave is the average thickness (nm), Dmax is the maximum thickness (nm), Dmin is the minimum thickness (nm) and ΔD is the thickness deviation (%).
A transparent film comprising a base layer formed of a transparent resinous material and a top coat layer provided on a first face of the base layer,
- with the top coat layer satisfying each of the following conditions:
- (A) having an average thickness Dave of 2 nm to 50 nm;
- and
- (B) by X-ray fluorescence analysis, having an X-ray intensity deviation ΔI of 40% or smaller, wherein the X-ray intensity deviation ΔI is expressed by the following equation:
- ΔI=(Imax−Imin)/Iave×100 (%)
- in which equation, lave is the average X-ray intensity (kcps) determined by X-ray fluorescence analysis, Imax is the maximum X-ray intensity (kcps), Imin is the minimum X-ray intensity (kcps), and ΔI is the X-ray intensity deviation (%).
Dependencies are inferred from the claim text.