What is the role of UVLED wavelength?
The basic UVLED emits energy in these two ranges, but its strong emission at short wavelengths makes it particularly suitable for coatings and thin ink layers. High-absorbency materials, such as adhesives and screen inks, are formulated more suitable for long-wave curing using long-wave light triggers.
What is the role of UVLED wavelength?
The UV curing machine used to cure these materials includes an LED irradiation head and a host. This UV curing machine can emit light of different wavelengths according to the different LED chips. While curing the UV materials, it can also cope with the curing of the surface .
Many very special applications, such as curing a large amount of materials containing pigment additives such as titanium oxide, or need to pass through plastic or glass for curing, require long-wave curing, because these materials almost completely block short-wave curing.
Most UV curing involves two wavelength ranges working simultaneously. The short wavelength works on the surface, and the long wavelength works on the deep layer of the ink or coating. This theorem is the result that short wavelengths are absorbed on the surface and cannot reach the deep layers. Short-wave exposure will not cause the surface to become sticky; insufficient long-wave energy will cause poor adhesion. Each formulation and film thickness will benefit from an appropriate short and long wavelength energy rate.
