Ultraviolet and primary coat dual-curing touch screen adhesive
A dual-curing, adhesive technology, applied in the direction of adhesives, adhesive types, polyurea/polyurethane adhesives, etc., can solve problems such as unavailable products, refraction, and inability to achieve high-efficiency mechanical operations, and achieve improved quality effect
Active Publication Date: 2014-08-13
东莞优邦材料科技股份有限公司
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- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0003] However, with the expansion of touch screen industrialization and the improvement of quality, the defects of double-sided tape gradually appeared
The first is the problem of light transmittance. From a microscopic point of view, double-sided tape has three interfaces. It is well known that light will refract when it meets the interface, so it greatly affects the light transmittance of the touch screen and thus affects the clarity of terminal electronic products.
Secondly, it is difficult to repair and the yield rate is not high
The third is the inability to achieve high-efficiency mechanical operation
[0005] At present, most of the mature touch screen adhesive glues on the market are single UV curing system, which has a problem: the curing of the shadow part that cannot be irradiated by UV light
UV curing means that the glue can be cured only after being irradiated by UV light (that is, ultraviolet radiation). However, in the actual operation process, there will always be some areas that cannot be irradiated with ultraviolet rays, the so-called shadow parts, which cannot be irradiated with UV rays. The glue in the light area will be poorly cured, or even not cured, which will cause hidden dangers for the long-term use of the touch screen.
In order to solve this problem, some professional adhesive manufacturers abroad have been doing research, but there is still no mature product
Method used
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Embodiment 1
[0020] A kind of UV and primer dual curing touch screen adhesive, the formula of its raw material is composed as following table 1:
[0021]
[0022] The formulation of the primer used with this adhesive is as follows:
[0023]
Embodiment 2
[0025] A kind of UV and primer dual curing touch screen adhesive, the formula of its raw material is composed as following table 3:
[0026]
[0027] The formulation of the primer used with this adhesive is as follows:
[0028]
Embodiment 3
[0030] A kind of UV and primer dual curing touch screen adhesive, the formula of its raw materials is composed as follows table 5:
[0031]
[0032] The formulation of the primer used with this adhesive is as follows:
[0033]
[0034] In the present invention, the preparation method of the adhesive and the primer used in conjunction with the adhesive is as follows: mixing and dispersing each raw material evenly.
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The invention discloses a double-cured touch screen adhesive with UV and primer coating. The adhesive is composed of the following raw materials in parts by mass: 30-60 parts of acrylate modified rubber, 10-30 parts of polyurethane acrylate, 10-40 parts of active diluent, 1-3 parts of photoinitiator, 0.5-2 parts of peroxide, 0.5-2 parts of antioxidant. The adhesive of the present invention can be cured by ultraviolet light, and can also be cured by reduction under the action of primer, which avoids the problem of curing in places where ultraviolet radiation cannot reach, and improves the quality of products.
Description
technical field [0001] The invention relates to a double-cured adhesive for touch screens with UV and primer coating. Background technique [0002] In the early stage of the touch screen assembly process, the adhesive material generally used is double-sided tape, and the tape is cut into a suitable shape by using a mold for bonding. Because it is easy to use and does not require a back-end curing process, it has been welcomed by touch screen manufacturers for a long time. [0003] However, with the expansion of touch screen industrialization and the improvement of quality, the defects of double-sided tape gradually emerged. The first is the issue of light transmittance. From a microscopic point of view, double-sided tape has three interfaces. It is well known that light will refract when it meets the interface, which greatly affects the light transmittance of the touch screen and the clarity of terminal electronic products. Secondly, it is difficult to repair and the yield...
Claims
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IPC IPC(8): C09J175/14C09J11/06
Inventor 颜明发夏忠
Owner 东莞优邦材料科技股份有限公司