A kind of curved screen all-inclusive soft film and preparation method thereof

Abstract

The invention provides an all-encompassing soft film for a curved screen, which includes a peeling layer, a use layer and a protective film layer; the use layer includes: an adhesive layer compounded on the peeling layer; an adhesive layer compounded on the adhesive layer The flexible soft film layer; the anti-fingerprint shrinkage shrinkage layer compounded on the flexible soft film layer; the protective film layer includes: the protective film layer adhesive layer compounded on the anti-fingerprint shrinkage shrinkage layer; The base material of the protective film layer on the adhesive layer of the protective film layer; the flexible soft film layer is formed by curing flexible polyurethane modified silicone resin. Compared with the prior art, the all-encompassing soft film for the curved screen provided by the present invention adopts the flexible soft film layer cured by flexible polyurethane modified silicone resin as the main film, cooperates with the specific layer structure, and realizes the strengthening of the integrity of the product, which can At the same time, the technical problems of poor adhesion and difficult tearing of the film are solved, so that the obtained curved screen all-encompassing soft film has a good lamination effect, and has good and stable dirt resistance.

Description

technical field [0001] The invention relates to the technical field of protective films, and more specifically relates to a curved screen all-encompassing soft film and a preparation method thereof. Background technique [0002] With the rapid development of electronic product technology, flexible mobile electronic terminal equipment is known and used by more and more people. On this basis, electronic devices with 2.5D and 3D arc edges have been more developed and popularized. At present, most mobile phones use curved glass screens. Although the cost of 2.5D and 3D curved glass screens is higher for mobile phones, they have more rounded edges and corners, which are more in line with consumer aesthetics and experience, and at the same time enhance anti-collision performance. However, due to the uneven arc at the edge of the screen, users who want to use the film are in a dilemma. [0003] At present, the existing technology generally adopts the curved screen film with TPU a...

AI Technical Summary

Problems solved by technology

But because the edge of the screen is an uneven arc, users who want to use it with a film are in a dilemma

[0003] At present, the existing technology generally adopts the curved screen film with TPU as the main film. On the one hand, the price of TPU is high, which increases the cost of the curved screen film; on the other hand, the TPU component is polyurethane resin, which is coated with Silicone pressure-sensitive adhesive resin often does not dry or has poor adhesion. At the same time, because TPU itself is slightly viscous, after baking at high temperature (more than 30s at 80°C), the tearing force of the protective film on both sides reaches more than 100gf / 25mm. It is difficult to tear off the protective film for further coating, and the pressure-sensitive adhesive coated on its surface generally needs to be baked at 100°C for more than 60s to be cured; therefore, the above-mentioned curved screen film has poor adhesion and bonding effect, and It is difficult to obtain good and stable functionality, such as dirt resistance

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