Manufacturing process of pattern ornament through molding ultraviolet-curing resin

Abstract

The present invention relates to a process for producing a patterned decorative material using moldings of ultraviolet (UV)-curable resins, which process allows production of various decorative materials having desired pattern forms for the decoration of windows of various electric and electronic instruments such as mobile phones and MP3 players and other accessories, by applying a UV-curable resin on a substrate formed of a plastic film, a polycarbonate sheet, an acrylic sheet, a metal sheet, a glass sheet or thelike; forming a UV-curable organic mold or an elastic mold of polydimethylsiloxane, having a pattern form formed thereon; pressingthe organic mold or elastic mold against the UV-curable resin on the substrate and irradiating UV rays to form a pattern form. The process according to the invention is advantageous in that the risk of scar and defect generation on the patterning mold is significantly low, the yield and economic efficiency are high, and large-area patterned decorative materials of high quality can be easily produced with excellent workability and productivity, compared with conventional methods of thermal pressing and adhesion using pattern form master rolls. The process according to the invention also allows production of decorative materials manifesting pattern images of higher brightness compared with conventional decorative materials.

Description

technical field [0001] The invention relates to a method for preparing pattern decorations (patterned decoration materials) by utilizing the molding action of ultraviolet curing resin and the decoration materials prepared by the method. Background technique [0002] Patterned decorative materials are widely used for decoration of various products, and especially in recent years, this material has been widely used for display windows or external packages of mobile phones. This decorative material uses patterns formed from synthetic resin films or metal foils with a thickness of 50 to 300D, and the patterns formed on these materials show unique textures and pattern images. In particular, structures such as reliefs, prisms, hairspins, crosses, lenses, hemispherical lenses, cylinders, triangular pyramids, square pyramids, hexagonal pyramids, lines and spaces, holes, and the like are formed in a thin film of the above materials in a repeated manner Above, the image of the patter...

AI Technical Summary

Problems solved by technology

[0005] However, in the above-mentioned conventional methods of printing and bonding, the unavoidable heat generated in the production process will cause partial volume reduction in the patterned film, and therefore, black spots can be generated at the contact interface between the patterned film and the base material, such as Shape defects of pinholes, so it is difficult to obtain high-quality, high-brightness pattern images; and in the case of forming large-area prototypes, unlike small-area patterns such as letters, quality degradation due to area-related defects as the area increases , it is also not suitable for the above-mentioned printing and bonding process, in addition, the difficulty of bonding the patterned film causes another disadvantage: the types of substrate materials available are quite limited

However, this process also has disadvantages such as high production cost, and high defect rate of metal foil during operation

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