UVA LED High - Speed Printing Solution
I. Roles
1.Rapid curing: Meets the needs of high-speed continuous printing. UV LED instantly emits high-intensity ultraviolet light, promoting rapid curing of ink, avoiding the accumulation and waiting of printed products and improving production efficiency.
2.Improving quality: Can emit light of specific wavelengths. Select the appropriate wavelength according to the ink formula to reduce curing problems and improve the clarity, color saturation and resolution of patterns.
3.Energy conservation and environmental protection: Low energy consumption, reducing energy consumption costs. And it does not contain harmful substances such as mercury, reducing pollution and harm to personnel health.
II. Principle
Based on the photochemical principle, the ultraviolet light (mainly UVA band) emitted by UV LED is absorbed by the photoinitiator in ink. The photoinitiator generates free radicals or cations, causing the monomers and oligomers of ink to polymerize and change from liquid to solid.
III. Customization process
1.Speed and power matching: Determine the power of UV LED according to the printing speed. Determine the appropriate value by testing the curing degree of experimental samples.
2.Ink and wavelength adaptation: Analyze the ink and select the UV LED module that emits the corresponding wavelength to achieve the best curing.
3.Curing system design: Design according to the structure and format of the printing press to determine the number, arrangement and distance from the printed product of UV LED lamps.
IV. Application scenarios
1.Commercial printing: In large-scale printing of magazines, newspapers, etc., ensure rapid curing of ink and enable printed products to quickly enter subsequent processes.
2.Label printing: Fine printing can be achieved at high speed. The ink is bright in color and can adhere better to labels of different materials.
3.Packaging printing: In packaging printing of food, medicine, electronic products, etc., improve production efficiency and quality and meet relevant standards and requirements.
Advantages of UV LED in printing machines and curing applications
1.Fast curing speed: The high-intensity ultraviolet light emitted by UV-LED enables ink to cure instantly, adapting to the high-speed operation of printing machines, improving production efficiency and shortening the cycle.
2.Precise curing control: The wavelength can be precisely controlled. Adjusted according to the characteristics of ink and printing substrate to ensure curing quality and avoid ink problems.
3.Low-temperature curing: Generates little heat, friendly to temperature-sensitive materials, maintains quality and stability, and saves energy and reduces consumption.
4.Energy conservation and environmental protection: Low energy consumption, high energy conversion efficiency, no mercury pollution, meeting the requirements of green printing.
5.Extend equipment life: Long service life and high stability, reducing maintenance time and cost and ensuring production continuity.
6.Improve printing quality: Enables ink to form a high-quality cured film, enhancing pattern clarity, color saturation and gloss.