Method for preparing photochromic film or plate
AssigneeLG Chem, Ltd.
InventorsTae-Sik Kang, Sang-Hyuk Im, Seung-Heon Lee, Young-Jun Hong
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Abstract
The present invention relates to a method of preparing a photochromic film or plate comprising printing a photochromic substance in the unit of an independent spot on a part or the whole of a basic material and forming a protective layer on the basic material, on which the photochromic substance is coated, so as to protect the photochromic substance. According to the present invention, the photochromic substance is printed in the unit of an independent spot so that the printed unit spots are isolated from each other, thereby prolonging the life of the photochromic substance.
Claims12
A method of preparing a photochromic film or plate, comprising:
- printing a photochromic substance in the unit of an independent spot on a part or the whole of a basic material;
- and
- forming a protective layer on the basic material
- wherein the protective layer is formed by a coating solution directly coated and then cured on the basic material on which the photochromic substance is printed, a protective film is additionally attached by using an adhesive, or a material having a lower gas or moisture permeability is additionally deposited or coated in the form of a thin film.
Dependencies are inferred from the claim text.