Application method of vacuum ion sputtering coating in IML technology

Abstract

The invention relates to an application method of vacuum ion sputtering coating in an IML technology, which selects In-Sn alloy of which metals have wide bandwidths as substrate of a coating material, wherein the ratio of In to Sn is 3:7, thus the coated film layer has beautiful metal texture. Two insulation protection layers of Al2O3 and SiO2 are matched with the surfaces of In and Sn, and the thicknesses of the Al2O3 and SiO2 insulation protection layers are respectively controlled to 30-40 nanometers and 60-70 nanometers. By using the technology of first coating metals and then coating metal protection layers, a coating zone can resist the erosion of ink and tension in the forming process, and the key part has the metal texture of the coating film and also the insulating non-conductive property. The invention solves the technical problem that in the machining process of mobile phone molding parts, such as printing an anti-impact ink layer, performing high-pressure forming and injection molding, the coating film is eroded, cracks and the like, thereby realizing large-scale popularization and application of the coating technology in ornaments of mobile phone shells.

Description

technical field

[0001] The invention relates to the technical field of in-mold decoration, in particular to an application method of vacuum ion sputtering coating in an IML process. Background technique

[0002] IML in-mold decoration process covers printing, vacuum coating, high pressure forming, punching, injection molding and other processing procedures, and is applied to communication products, such as the decorative processing of formed mobile phone shell covers.

[0003] With the development of the mobile phone industry, the importance of its appearance has been paid more and more attention by mobile phone designers. Designers are not only satisfied with the decorative effect around the mobile phone screen, but also to meet the public's demand for appearance, designers have introduced mobile phone case covers Not only should there be a sense of touch and texture, but also a metal decorative effect, and when the finger touches a specific area, the corresponding function...

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