Lamp box film coating liquid and preparation method thereof

Abstract

The invention belongs to the technical field of ink-jet printing media, and particularly discloses a lamp box film coating liquid and a preparation method thereof. The lamp box film coating liquid comprises an upper layer coating liquid and a lower layer coating liquid, and the upper layer coating liquid is prepared from, by weight, 2-5 parts of titanium dioxide, 2-5 parts of acrylic acid copolymer emulsion, 1-3 parts of a surfactant and 3-7 parts of ethyl alcohol; the lamp box film coating liquid prepared by the method is divided into an upper layer and a lower layer, the upper layer is an ink absorbing layer, the lower layer is an adhesive covering layer, nitric acid solutions are respectively added into the prepared silicon dioxide pre-dispersion liquid and the titanium dioxide pre-dispersion liquid for continuous dispersion; by preparing coating liquid after adopting of the nitric acid solutions, the light resistance and the weather resistance of the coating can be improved, meanwhile, the covering power and the light transmittance of the coating are also remarkably improved, the double-layer film coating liquid is prepared from different materials, the adaptability is high, double-layer structures prepared from different materials are combined with an acidic formula improved by adopting the nitric acid solutions, and the overall performance of the coating liquid can be remarkably improved.

Description

technical field [0001] The invention belongs to the technical field of inkjet printing media, and in particular relates to a light box film coating solution and a preparation method thereof. Background technique [0002] The light box film is a kind of inkjet medium with a special structure, which is widely used in the light box display of exhibition halls, shopping malls, subway stations, and signboards. This kind of medium generally contains two layers of ink-absorbing layer and light-diffusing layer. When making light boxes, it is not necessary to add Astigmatism film, which can be viewed both in reflection (when not lit) and in transmission (when lit), is widely used. [0003] Inkjet light box film is divided into two types: back spray light box film and front spray light box film. The structure of the back spray light box film is designed so that the light diffusion layer is on the top and the ink absorbing layer is on the bottom. Lateral diffusion and vertical diffusi...

AI Technical Summary

Problems solved by technology

[0004] The current light box film coating solution generally has the problems of easy yellowing, poor light resistance, poor weather resistance, low hiding power and light transmittance, and easy powder drop.