Rough-surface high-hardness OCA laminating method

Abstract

The invention discloses a rough-surface high-hardness OCA laminating method, which relates to the technical field of touch screen laminating, and particularly comprises the following steps of: 1, pulling out one end of a film of which the front surface is laminated with an OCA from a film roll, so that the back surface of the film is sequentially wound on a cylindrical surface of a heating rollerand a cylindrical surface of a pressing roller, 2, heating the film and the OCA to 60-70 DEG C through a heating roller, 3, blowing heat of the glass diffusion plate to 60-70 DEG C through a hot-air blower, 4, conveying the glass diffusion plate to a pressing roller through a conveying roller shaft, wherein the attaching face of the glass diffusion plate abuts against the cylindrical face of the pressing roller, 5, along with the transmission of the glass diffusion plate, extruding the film on the glass diffusion plate by a compression roller, simultaneously laminating the film on the glass diffusion plate through the OCA, and cooling the film, the OCA and the glass diffusion plate together at normal temperature to finish lamination, so that the technical problem that the laminating yieldof the film and the glass diffusion plate is high is solved.

Description

technical field [0001] The invention relates to the technical field of touch screen lamination, in particular to a lamination method of high-hardness OCA optical glue on a rough surface. Background technique [0002] OCA optical glue is a special adhesive used for bonding transparent optical components (such as lenses, etc.). It is required to be colorless and transparent, with a light transmittance of more than 90%, good bonding strength, can be cured at room temperature or medium temperature, and has the characteristics of small curing shrinkage; OCA optical adhesive is one of the raw materials for important touch screens. The optical acrylic adhesive is made without a base material, and then a layer of release film is attached to the upper and lower base layers. It is a double-sided adhesive tape without a base material. [0003] When the glass diffusion plate of some display screens is laminated on the rough surface, the film is directly bonded at room temperature throu...

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Problems solved by technology

[0003] When the glass diffusion plate of some display screens is attached to the rough surface, the film is directly attached at room temperature through OCA optical glue. Since the material of OCA optical glue is generally acrylic or silicone-based soft colloid, it is solid at room temperature. , after direct bonding, it is easy to cause many tiny air bubbles in the product after bonding, which cannot be eliminated, resulting in a decrease in bonding yield

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