Manufacturing technology of PET film used for liquid crystal writing board

Abstract

The invention provides a manufacturing technology of a PET film used for a liquid crystal writing board. The technology comprises the following steps of a, configuring a coating liquid: according to aweight ratio, mixing a 96-98% acrylic monomer, a 1-2% ultraviolet light absorber, and a 1-2% ultraviolet light triggering curing agent to obtain the coating liquid; b, coating: using a narrow slit coating head or a scraper type coating head to carry out coating, uniformly coating the coating liquid on an upper surface of a PET base film to obtain a coating layer; c, pressing an anti-dazzle texture: using an anti-dazzle texture roller and a light roller to press upper and lower surfaces of the PET base film so as to press out the anti-dazzle texture on a surface of the coating layer; and d, carrying out light curing: making the PET base film covered with the coating layer pass through an ultraviolet lamp at a uniform speed, and curing the coating layer by ultraviolet irradiation to obtainthe PET film. The PET film manufactured by the technology has effects of skid resistance, anti-dazzle, high hardness, wear resistance and ultraviolet resistance, and is suitable for an outer layer film applied to a liquid crystal writing board.

Description

technical field [0001] The invention relates to the technical field of PET films, in particular to a preparation process of PET films used for liquid crystal writing boards. Background technique [0002] There is a kind of liquid crystal writing board in the market now, and the flexible liquid crystal writing film can sense the writing pressure trajectory of the writing pen after being powered on, and then display the corresponding writing content. [0003] Existing liquid crystal writing board on the market, the outer film of its flexible liquid crystal writing film is PET base film. When ordinary PET film is used as the base film, it has the following disadvantages: (1) The surface is smooth, and the writing feel is not good; (2) There is no anti-glare effect, and the film will reflect light, which affects vision; (3) The surface hardness is very low, and it is easy to scratch , not wear-resistant, affecting writing and wiping; (4) does not have anti-ultraviolet function,...

AI Technical Summary

Problems solved by technology

When ordinary PET film is used as the base film, it has the following disadvantages: (1) The surface is smooth, and the writing feel is not good; (2) There is no anti-glare effect, and the film will reflect light, which affects vision; (3) The surface hardness is very low, and it is easy to scratch , not wear-resistant, affecting writing and wiping; (4) does not have anti-ultraviolet function, so that the underlying liquid crystal will change color under ultraviolet light (such as sunlight), which will affect the display effect

Due to the uniformity and diffusivity of the shape of the matt particles, there will be problems of uneven coating and scratch-resistant surface

Moreover, these coating solutions have no anti-ultraviolet function, and the liquid crystal is easily exposed to ultraviolet light when the black and white board is used outdoors, which will affect the display effect

Images