Shenzhen Youjiete Optoelectronics Co., Ltd

Where is the core technology of UV LED light curing reflected?

The core technology of UV LED light curing] includes UV coating, ink materials and formulation technology, as well as the UVLED curing system, and the two complement each other.

UV LED coating and ink formulation technology: Coatings and inks that match mercury lamps have been quite mature after decades of development. Although the curing principle is similar when switched to LED light sources, there are still some technical problems to be faced, which need further research and solution. Currently, the following three major problems need to be solved urgently. First, high-efficiency, non-yellowing, and economical photoinitiators that match the UVA spectrum. Second, low-migration coatings and inks that can be applied to food packaging and meet standards. Third, UV LED curing coatings that can match the adhesion and other physical properties of thermosetting coatings.

UV LED curing system technology: The UV LED light curing system is generally composed of a UV LED curing lamp and a drive control system, and it is a knowledge-intensive product involving many disciplines. Its core technologies include multiple links such as optics and packaging, heat transfer, power electronics, etc. Defects in each link will greatly affect the product quality and overall performance.

To do a good job in the UV LED curing system, it is generally necessary to be equipped with a research and development team including structural engineers, heat transfer and fluid mechanics engineers, packaging engineers, optical design engineers, software engineers, power electronics engineers, electrical engineers, etc. The biggest difference between the UV LED industry and the traditional mercury lamp industry is that UV LEDs belong to semiconductor products, and the technology develops particularly rapidly. It is no longer the state where one product can be used for ten years and one technology can last a lifetime. Instead, continuous research and development investment is required to keep up with the trend of technological development, otherwise it will soon be eliminated by the market.

In the tin printing industry, UV LED curing lamps are required to achieve the highest possible UV irradiance at a irradiation distance of 25 - 50mm, which puts forward high requirements for optical design. Adopting a reasonable optical design can achieve the same UV irradiance with less power consumption, or achieve a higher UV irradiance with the same power consumption, which is of great significance for energy conservation and ensuring the curing quality.