AB glue with high-refractive-index ultrathin intermediate bonding layer

Abstract

AB glue with a high-refractive-index ultrathin intermediate bonding layer comprises the high-refractive-index ultrathin intermediate bonding layer, wherein a low-viscosity silica gel layer is adheredto the upper surface of the intermediate bonding layer, a high-viscosity glue layer is attached to the lower surface of the intermediate bonding layer, an organic silicon release film is attached to the lower surface of the high-viscosity glue layer, and a pretreatment PET film is attached to the upper surface of the low-viscosity silica gel layer; the high-refractive-index ultrathin intermediatebonding layer is formed by introducing inorganic nanoparticles with high refractive index into an organic coating with high refractive index, coating the high-viscosity glue layer with the organic coating, and the intermediate bonding layer with both hardness and high transmittance is obtained. According to the AB glue with the high-refractive-index ultrathin intermediate bonding layer, during use, the organic silicon release film is torn off, the high-viscosity glue layer is adhered to tempered glass and tightly adhered to the glass; the pretreatment PET film is torn off, and the silica gel layer is adhered to a display screen; the silica gel layer has rapid exhaust effect and good adhering effect due to low viscosity and low surface energy; the tempered glass is adhered to the screen ofa mobile terminal such as a mobile phone by the AB glue, so that the screen of the mobile terminal product is protected from being scratched, and surface impact resistance of the mobile terminal product is improved. Compared with traditional AB glue, the AB glue has the advantages of being high in light transmittance, high in refractive index, good in flexibility, good in adaptability to non-planar display screens, simple to use, good in weatherability and easy to rework.

Description

technical field [0001] The invention relates to the technical field of viscose, in particular to an AB glue with a high refractive index ultra-thin intermediate bonding layer. Background technique [0002] Up to now, the AB adhesives available on the market for the full lamination of tempered glass are mainly based on PET (polyethylene terephthalate). One side of the substrate is low-viscosity silicone, and the other side is Is other high viscous material. [0003] The main production process of the AB glue is: first coat the silicone on one side of the PET substrate and then cover the protective film, and then coat other high-viscosity materials on the other side of the PET substrate and laminate the silicone release film. The main disadvantages of this process are: the substrate is stretched and deformed by the second unwinding; the second coating process will affect the flatness of the first coated adhesive layer, thereby affecting the overall product quality. In additi...

AI Technical Summary

Problems solved by technology

The main disadvantages of this process are: the substrate is stretched and deformed by the second unwinding; the second coating process will affect the flatness of the first coated adhesive layer, thereby affecting the overall product quality

In addition, the PET used as an intermediate layer has certain optical defects, such as low refractive index and high haze, and the refractive index difference of the three layers of materials in the above structure is relatively large, which reduces the light transmittance and refraction of AB glue. The high thickness of the PET base material results in insufficient softness of the AB glue, and poor full-fitting effect on non-flat displays, resulting in poor customer trial experience

[0004] After directly removing the PET base material in the middle, the hardness of the AB glue is reduced. At the same time, the above-mentioned high-viscosity material is in direct contact with the organic silica gel. Insufficient to resist the mechanical force given by the outside world, resulting in the separation of the above-mentioned high-viscosity material from the organic silica gel, as well as residual glue, glue drop and other defects.

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