Application Of UV Conformal Paint Coating in Circuit Board Industry

UV glue is widely used in circuit board coating. The UV glue is atomized by an automatic machine such as a coating machine. According to the characteristics of the process, it can be selectively coated or the entire board can be coated, and then cured by a furnace. In order to achieve the effect of three defenses. Let me introduce its features for you.
First: Environment / Safety
1. No VOC volatiles, no pollution to ambient air.
2. Adhesive components are less restricted or prohibited in environmental regulations.
3. No solvent, low flammability.
Second: Economy
1. The curing speed is fast, and the curing can be completed in a few seconds to tens of seconds, which is beneficial to the automatic production line and improves labor productivity.
2. After curing, it can be inspected and transported, saving space.
3. Curing at room temperature saves energy. For example, the energy required to produce  1g  light-curing pressure-sensitive adhesive only needs  1% of the corresponding water-based adhesive, and 4% of solvent-based adhesive. It can be used for materials that are not suitable for high-temperature curing, and the energy consumed by UV curing can save energy consumption by  90% compared with thermal curing resins.
4. The curing equipment is simple, only lamps or conveyor belts are needed, saving space.
5. One-component system, no mixing required, easy to use
Finally: Compatibility
1. For temperature, solvent and moisture sensitive materials can be used.
2. Control curing, the waiting time can be adjusted, and the degree of curing can be adjusted.
3. The glue can be repeatedly applied and cured for many times.
4. The UV lamp can be easily installed in the existing production line without major changes.
5. The cost of raw materials is high, without low-cost solvents and fillers, and the price of the adhesive is high.
6. Ultraviolet light has weak penetrating power to some plastics or translucent materials, the curing depth is limited, the geometry of curable products is limited, and the parts that are opaque and the dead corners that cannot be irradiated by ultraviolet light are not easy to cure.
7. Ordinary UV glue can only bond light-transmitting materials, and bonding opaque materials requires other technologies, such as light delay.