Protective film capable of preventing blue light and blocking ultraviolet light

Abstract

The invention relates to a protective film capable of preventing blue light and blocking ultraviolet light. The protective film is formed by a wearing layer (1), a first polyester film (2-1), a blue light-preventing transparent adhesive layer (3), a second polyester film (2-2), an ultraviolet blocking pressure-sensitive adhesive layer (4) and a release film (5), and all the layers are combined into a whole; the blue light-preventing transparent adhesive layer (3) is a mixed material formed by a compound light stabilizer, an adhesive, a curing agent and a solvent, is used for coating the other surface of the first polyester film (2-1), is placed at the temperature of 90 to 150 DEG C for 40 to 120s, and then is cured to obtain the blue light-preventing transparent adhesive layer (3), wherein the compound light stabilizer is prepared by mixing a nanocrystalline metal oxide particle light stabilizer and a triazine derivative light stabilizer, and the adhesive is an acrylate adhesive or a polyurethane adhesive. The protective film provided by the invention can effectively protect human eyes from being harmed by blue light, and meanwhile, has the functions of blocking the ultraviolet light, protecting a product or a glass surface from being scratched, and the like.

Description

technical field [0001] The invention relates to a protective film that prevents blue light and blocks ultraviolet rays, and is especially suitable for pasting on the surfaces of various 3C electronic product display screens and optical screens with blue light radiation, and is also suitable for pasting on the glass surface of buildings or cars. . Background technique [0002] Blue light is high-energy visible light with a wavelength of 380-500nm, among which short-wave blue light of 380-440nm can stimulate the retina to excite free radical ions, cause the retinal pigment epithelial cells to shrink, and then cause the death of photosensitive cells, eventually causing blurred vision and gradual decline in vision Or even lose it completely. After the blue light enters the fundus and is focused, the focus does not fall on the retina, but falls between the retina and the lens, which increases the chromatic aberration distance for the light to focus in the eye. The injection of ...

AI Technical Summary

Problems solved by technology

[0003] Various existing 3C products, such as various types of computers, mobile phones, digital cameras, televisions, electronic dictionaries, or digital audio players, will produce high-energy blue light; similarly, buildings or cars have a large number of The glass structure is used for the transmission of light, but the glass or glass window film on the market does not have a good anti-blue light effect. There are a lot of high-energy short-wave blue light in the light source of sunlight and car headlights, so in the above Under certain conditions, long-term exposure to blue light radiation can damage human eyes and cause eye vision damage that is difficult to recover

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