Curved screen protective film and manufacturing method thereof

Abstract

The invention discloses a curved surface protective film and manufacturing method thereof; the curved surface protective film is used for being attached to a curved surface screen, a TPU film of the curved surface protective film is provided with a reinforcing layer, the reinforcing layer is located in the center of the TPU film and embedded in the TPU film, the reinforcing layer and a main screenof the curved surface screen are equal in area, TPU with the reinforcing layer is attached to the main screen, and the two sides of the TPU film can be attached to curved surfaces on the two sides ofthe curved surface screen. During production, the reinforcing layer is cut according to the size of a mobile phone main screen, the reinforcing layer is embedded in TPU in a hot pressing or coating mode, the self-repairing layer is coated on the reinforcing layer, and the pressure-sensitive adhesive layer is coated on the other side of the reinforcing layer. Due to the arrangement of the reinforcing layer, the problems of difficulty in film pasting and flatness after film pasting can be solved, the curved surface part is good in hot bending and pasting and free of springback and delaminating,and after long-time use or at extreme temperature, due to the fact that the reinforcing layer is used as a support, the TPU film cannot stretch, deform and delaminate, and the appearance of the wholeprotective film cannot be affected; and the purpose of long-term use is achieved.

Description

technical field [0001] The invention relates to an accessory product of an electronic product, in particular to a protective film of a display screen. Background technique [0002] Currently, there are two types of 3D TPU curved screen protectors on the market. One is a full-elastomer TPU film (polyurethane film or other elastomers), which has the advantage of good bending and forming effects, but the disadvantage is that the large flat part in the middle of the screen is too soft to fit, so it is difficult to fit. Poor flatness, long-term use or extreme high and low temperature conditions may cause deformation of the TPU film, affect the use of the screen, and may even cause the protective film to fall off. [0003] The other is a TPU elastomer protective film with a PET film (the PET film may be on or under or in the middle of the TPU and PU films, but they all exist in the same area), although it solves the problems of curved screen bonding and flatness, However, the be...

AI Technical Summary

Problems solved by technology

One is a full-elastomer TPU film (polyurethane film or other elastomers), which has the advantage of good bending and forming effects, but the disadvantage is that the large flat part in the middle of the screen is too soft to fit, so it is difficult to fit. Poor flatness, long-term use or extreme high and low temperature conditions may cause deformation of the TPU film, affecting the use of the screen, and may even cause the protective film to fall off

[0003] The other is a TPU elastomer protective film with a PET film (the PET film may be on or under or in the middle of the TPU and PU films, but they all exist in the same area), although it solves the problems of curved screen bonding and flatness, However, the bending performance is poor at places with large curved angles on both sides of the curved screen. Due to the addition of PET film, the hardness increases and the resilience is better. The places with large curved angles on both sides of the curved screen will rebound and delaminate after long-term use

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