Transparent writing quick-drying page film and preparation method thereof

Abstract

The invention relates to the technical field of films, in particular to a transparent writing quick-drying page film and a preparation method thereof. The transparent writing quick-drying page film comprises a transparent BOPP film base layer, a bottom coating, a first writing quick-drying coating and a second writing quick-drying coating; and the upper surface of the transparent BOPP film base layer is sequentially coated with the bottom coating, the first writing quick-drying coating and the second writing quick-drying coating; the lower surface of the transparent BOPP film base layer is sequentially coated with a bottom coating, a first writing quick-drying coating and a second writing quick-drying coating; the plurality of bottom coatings are respectively and uniformly arranged on theupper surface and the lower surface of the transparent BOPP film base layer, a gap is formed between two adjacent bottom coatings in the horizontal direction, and an adhesive is filled in the gap between the bottom coatings; the bottom coatings aredivided into a plurality of parts to be uniformly coated on the surface of the transparent BOPP film base layer, the areas of the priming coat monomersare reduced, the supporting force is strong, and the two adjacent bottom coatings are connected by using the adhesive, so that the joint strength between the bottom coatings is improved, the problem of overlarge deformation caused by pulling is reduced, and the writing is smoother due to difficult generation of pulling deformation.

Description

technical field [0001] The invention relates to the technical field of thin films, in particular to a transparent writing quick-drying page film and a preparation method thereof. Background technique [0002] Polyethylene film can be divided into low-density, medium-density, high-density and cross-linked polyethylene films with different properties: high-density polyethylene film has good heat resistance and mechanical strength, but poor transparency. However, cross-linked polyethylene film has higher tensile strength, heat resistance, barrier and heat shrinkage than other types of polyethylene products. Polyethylene film is usually an ethylene homopolymer, and broadly speaking, it also includes copolymers of ethylene and α-olefins or copolymers of polar vinyl resins. The molecular structure and density of polyethylene in a broad sense are determined by chain breaks, and polymers can be branched in different ways depending on the polymerization conditions. [0003] There a...

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Problems solved by technology

Moreover, the surface of the film is scratch-resistant and has a long service life; however, the transparent book page film is a film product. During the simple use of the film, the film will be easily deformed due to pulling, and the film is easily bent and deformed. With a certain supporting force, when writing with brush strokes, because the tip of the nose keeps sliding on the film, it will cause the film to be pulled, resulting in the inability to write normally. There are also products in the prior art that use a single-layer matte PET film as the writing film. The following disadvantages: writing is prone to the problem of broken strokes, writing is not continuous, not smooth

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