[UVLED curing] related common sense
With the continuous development of The Times, the production process has also lived up to expectations. Auvcue is [LED UV light source] manufacturer adhering to the integrity of management, committed to the pursuit of quality, service improvement.
The so-called Ultraviolet Rays (UV) are the visible rays of the sun’s rays (red orange, yellow, green, blue, blue, purple), which are invisible to the naked eye. Ultraviolet radiation is a general term for radiation in the electromagnetic spectrum with wavelengths ranging from 10nm to 400nm. According to the different wavelength, ultraviolet light is generally divided into UVA, UVB, UVC three bands.
Typical applications of the UVA band are ultraviolet curing and UV inkjet printing, with wavelengths ranging from 365 to 405nm. Uv-led light curing applications include UV adhesive curing in display, electronic medical, instrumentation and other industries; UV coating curing in building materials, furniture, home appliances, automobiles and other industries, UV ink curing in printing, packaging and other industries.
The advantages of LED UV curing in the production process
Cold light source, no heat radiation, low surface temperature of the illuminated item. This feature will not deform the film in the process of the liquid sensitive time welding ink, reduce the distortion of the image transfer, and better ensure the consistency of the image and image. It can solve the long-term thermal damage problem of optical communication liquid crystal production, especially suitable for liquid crystal edge sealing, film printing and other occasions requiring small temperature rise. The heat is small, which can solve the problem that the heat of mercury lamp printing equipment is large and the staff is unbearable, and the LED light source emits a high-purity single-band ultraviolet light, almost no infrared output, which belongs to the cold light source, and the workpiece will not be deformed by heat.
1. High efficiency. LED light energy is highly concentrated in a certain ultraviolet spectrum segment with effective curing, and the actual use effect is similar to the curing effect of traditional high-pressure mercury lamp UV light source with light intensity of 1000-2000mw/cm. Thus the curing time is shortened. The traditional mercury lamp light looks very bright, but the heat is very high, because its spectrum is very wide, the ultraviolet spectrum segment that really plays an effective curing role only accounts for a part of the energy, and a considerable part of the spectrum is lost in the visible and infrared segment (resulting in heat generation), which seriously damages the eyes of the operator and easily causes thermal deformation of the workpiece.
2. Long life. The service life of the LED lamp is more than 10 times that of the traditional mercury lamp, and the service life is not affected by the number of switches. Fast reaction (switching) time. LED lights do not need to be preheated and can be printed immediately after turning on, improving productivity.
3. High security. LED lights have no UVC rays, no ozone release and are not easy to break.
4. High stability. The printing quality of the UV inkjet printing machine is closely related to the process of UV drying and curing, and the stability of the LED lamp makes the output energy predictable and stable, so the printing effect is also predictable and stable. LED let the ink deep curing, LED lamp emit light wavelength is 395nm, can let the ink deep curing, so will not occur printed on the surface has dried but the bottom dry situation. Printing on various media has strong adhesion and scratch resistance.
5. Low energy consumption. The power of the LED lamp is extremely low, only equivalent to 10%-20% of the UV mercury lamp. Due to the advantages of LED curing light sources, the development of LED curing inks has become the research and development direction of today’s UV ink industry. The development of LED curing ink, the first thing to consider is the phase with the photoinitiator, a factor that must be considered when selecting the photoinitiator is the absorption spectrum of the photoinitiator and the emission spectrum of the light source match.
The second thing to consider is the compatibility with the pigment. Relative to the luminous wavelength of the LED, due to the fact that substances such as pigments in the UV ink coincide with the absorption wavelength of the photoinitiator, the curing characteristics become extremely poor compared with transparent oil without pigments. Compared with previous UV inks, it is necessary to choose a pigment with good penetration (small absorption) for the specific UV light wavelength used. In addition, the selection of prepolymers and active monomers is also important.
The above explanation is the relevant common sense of UVLED curing. Auvcue is a professional R & D and production of various UVLED point light source, [UVLED line light source], UVLED surface light source and [UV curing machine] manufacturers, and can provide solutions and customization according to the actual needs of customers. The company has Japanese production technology, products are exported to South Korea, Japan, the United States, Brazil and other places. Welcome friends from all walks of life exchange guidance. If you want to know more about the UV curing machine, welcome to consult customer service online or call the company’s service hotline for consultation, we will be happy to provide you with quality service! Some of the information/pictures in this article are from the Internet, only for the purpose of sharing new information in the industry, not for commercial use. If any rights are involved, please inform us immediately, and we will delete it immediately. Thank you.
