PET anti-explosion film, anti-explosion glass rear cover and preparing process of anti-explosion glass rear cover

Abstract

The invention provides a PET anti-explosion film, an anti-explosion glass rear cover and a preparing process of the anti-explosion glass rear cover. The PET anti-explosion film comprises an OCA layer,a metallic luster PET base layer, a UV transfer adhesive layer and a printing layer which are attached from top to bottom. The OCA layer has the thickness of 20-30 micron. The metallic luster PET base layer is a PICASUS film from the TORAY company or a blue light film from the SKC company and has the thickness of 30-145 micron. The PET anti-explosion film is attached to a glass cover plate, and glass splashing happening when the cell phone glass rear cover is broken is prevented; the PET anti-explosion film is particularly suitable for high-stress 3D glass rear covers; through the attaching of the metallic luster PET base layer, the UV transfer adhesive layer and the printing layer, the PET anti-explosion film and the anti-explosion glass rear cover are endowed with the metal effect; compared with the mode of realizing the electroplating decoration effect on the cell phone glass rear cover, the efficiency is higher, cost is low and the effect is better.

Description

technical field [0001] The invention relates to the technical field of PET films, in particular to a PET explosion-proof film, an explosion-proof glass back cover and a preparation process for the explosion-proof glass back cover. Background technique [0002] Nowadays, many high-end mobile phones have begun to use glass back covers. In order to improve the visual effect and the hand feel of mobile phones, 3D glass has been widely used on the glass back covers of mobile phones. [0003] The back cover of the mobile phone made of 3D glass is difficult to process due to its curvature, and the existence of stress after forming makes the possibility of glass fragments splashing due to falling and breaking the screen greatly increased. [0004] In order to improve the visual effect of the mobile phone, it needs to be decorated on the glass back cover. However, due to the high hardness of the glass itself, very low glass transition temperature and surface energy, inorganic materi...

AI Technical Summary

Problems solved by technology

However, electroplating on glass has low efficiency and yield

Moreover, the electroplating layer is easy to oxidize, and the glass back cover will change color after long-term use, which will affect the appearance

And the electroplating layer with metal will produce electromagnetic shielding, resulting in poor mobile phone signal and unable to realize wireless charging function

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