A kind of preparation method of polyvinyl chloride decorative sheet

Abstract

A method for preparing a polyvinyl chloride decorative sheet, which sequentially includes a mixing and proportioning process, a three-roller coating process, a high-voltage electric field polarization process, a curing and drying process, and deviation correction, lamination, and coiling processes; the mixing and proportioning process is In the pre-prepared mixed solution of metal powder coated with an insulating layer and polymer glue, add a curing agent and stir evenly to make a coating slurry; the three-roll coating process is through a three-roll coating device The coating slurry prepared in the mixing and proportioning process is evenly coated on the surface of the base material of the polyvinyl chloride decorative sheet according to the set sizing thickness; The surface of the material, and by evaporating, drying the solvent of the coated slurry. The method of the present invention improves the coating process of the polyvinyl chloride decorative sheet, optimizes the composition of the coating slurry, and improves the curing and drying process, thereby improving the appearance performance of the finished polyvinyl chloride decorative sheet as a whole, especially Flash sex.

Description

technical field [0001] The invention relates to the technical field of processing and preparation of polyvinyl chloride (PVC) materials, in particular to a preparation method of a polyvinyl chloride decorative sheet. Background technique [0002] At present, in the field of preparation of decorative sheets, a method of attaching decorative sheets to the surface of molded products is widely used. Compared with painting using paint, attaching decorative sheets to The surface of the molded product is conducive to improving the production efficiency of the molded product, reducing the production cost of the product, reducing volatile organic compounds (VOC), making the product more environmentally friendly, and creating more styles of decorative sheets to increase the level of beauty and appreciation. On the other hand, with the improvement of people's living standards, the demand for decorative sheets in the market is getting higher and higher. For example, many designs often r...

AI Technical Summary

Problems solved by technology

In the preparation process of the high-gloss silver decorative sheet, since the solution after mixing the aluminum powder and PU glue is a non-Newtonian fluid, the concentration of the aluminum powder and glue paste gradually becomes thinner under the shear stress of the coating process, resulting in aluminum powder Highly oriented parallel to the plane of the substrate, the range of reflective angles of the aluminum powder is narrow, which affects the aesthetics of the decorative sheet; in addition, due to the considerable unevenness of the substrate, the actual leveling of the fluid is not good, and the molecular chains are seriously entangled , and there are differences in the surface linear speed of each roller, and in the scheme disclosed in the prior art, due to the unreasonable design of the coating device, these problems cannot be effectively solved, so the thickness and uniformity of the coating locally and as a whole have problems big difference

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