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UV curing technology and the latest application progress

xinstAug 02, 2021

At the beginning of the birth of UV glue, because it was cured by ultraviolet light, it was necessary to add additional ultraviolet curing equipment, which made it difficult for many users to accept. Because traditional solvent-based glue can be cured by baking at room temperature or high temperature, there is no need to add more expensive curing equipment like UV glue.

However, with the development and popularization of UV curing technology, the price of UV curing machines has various grades according to the curing needs, which can meet the needs of more customers.

Wafer UV Dicing Tape is an ultra-strong adhesion UV tape, specially designed for deep-cutting process of LED modules,

Since the development of UV glue and UV curing machine, many industries have begun to abandon traditional solvent-based glues and choose UV glue and UV curing methods. This is also due to the continuous development and progress of UV curing technology, which can replace the traditional in many fields. Curing method.



The current mainstream UV curing technologies include: free radical light curing technology, cationic light curing technology, hybrid light curing technology and dual curing technology. The latest application developments include:

⑴UV electronic adhesive: UV adhesive has been widely used in the field of electronic products, including cable positioning, pin sealing, LCD panels and mobile phone keys. As electronic products become thinner and thinner, organic optoelectronic devices and flexible bendable display devices appear, the demand for UV glue is increasing;

⑵UV medical glue: UV glue also plays a very important role in the medical field, such as the bonding of disposable catheters and syringes, bonding of endoscopes, and bonding of some medical devices with high transparency;

⑶UV optical glue: UV optical glue is mainly used for bonding of touch screens. UV optical adhesives used in touch screens mainly have three functions, namely bonding, increasing light transmission and improving impact resistance. At present, there are two types of optical adhesives, liquid (LOCA) and solid (OCA), which are used for touch screens. LOCA needs a glue dispenser to dispense glue, which has good filling and convenient glue application, but it needs to be treated with overflow glue; OCA is a double-sided PSA without substrate, with release films on the top and bottom;

⑷UV Pressure Sensitive Adhesive (PSA): After solution coating, drying and chemical reaction, there may be residual solvents and other harmful chemicals in the produced PSA. However, the PSA is made by UV curing method, and the solvent-free liquid components are polymerized by UV light irradiation, which has low pollution, simplifies production and improves production efficiency.

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