Guangmai Technology is professional in making theUVA UV Curing 395nm 400nm 405nm LED PCBA Boards.
UV LED curing is a kind of UV curing, which uses UV LED light source to cure UV ink, UV glue, UV coating, etc.
As we all know, ultraviolet light (UV light) was successfully promoted to commercial applications more than 30 years ago. Various adhesive manufacturers have developed a series of UV products for bonding, sealing, printing, etc. according to UV light curing characteristics, and they are widely used in many fields such as communications, electronics, optics, and printing. These products will be cured or hardened (polymerized) under UV light (a certain wavelength and certain light intensity), and it is more efficient, energy-saving and environmentally friendly than traditional products-UV light curing.
Is the curing effect of UV LED related to the color of UV ink?
When certain yellow pigments are used in a photoinitiated system composed of acrylates and amines, the color of the ink will change greatly. The more difficult to cure pigments are black, white, phthalocyanine and yellow pigments. White and black show two extreme phenomena. White reflects light completely, and black does not reflect light at all.
People even think that it is impossible to cure UV light through a film with a certain thickness and opaque to the light, but optimizing the curing conditions will make it possible to cure UV inks containing pigments. Some problems are It can be solved or improved by selecting photoinitiators and pigments according to the absorption characteristics of the pigments to UV light, or by adjusting the UV light source to reduce the effect of curing the pigments.
Different pigments have different characteristics of light absorption, reflection and scattering, so the degree of hindrance to UV curing is also different. Most pigments have a certain transmittable area in part of the UV light and visible light range, which is called the "pigment" Spectral window", in which the photoinitiator can fully absorb UV light radiation energy. Therefore, determining the position of the window is very important for selecting a suitable photoinitiator. In other words, the photoinitiator should match the pigment in the ink system and be in the wavelength range where the pigment absorbs UV light weakly. Therefore, when using UV inks, pay attention to carefully observe the relationship between the absorption spectrum of the pigment and the photoinitiator.
The curing speed of different colors of UV ink is different, because the wavelength of the light reflected by the pigment particles of various colors is different. The closer the reflected wavelength is to the wavelength of UV light, the slower the curing speed will be. The required UV light The higher the energy; conversely, the faster the curing speed, the lower the UV light energy required. Therefore, the UV curing speed must be adjusted for inks of different colors in order to reduce the effect of pigments on the curing of inks.
Product Picture:
What kind of pcb boards GMKJ LED making now:
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| Aluminum pcb boards for the UVC smd leds 265-280nm | 6565/6868 8-12 watt per LED, UVA LED modules | Copper pcb boards for the UVA curing printing industry |
UVA LED module lighting on visual effect:
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| UV 395nm LED modules with total 150 watt | UVA quantum boards with 365nm and 395nm |
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For more details of the UVA UV Curing 395nm 400nm 405nm LED PCBA Boards, please feel free to contact with Guangmai Tech directly.
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