How to Apply UV LED Technology to Curing Ink
The list of places where UV LEDs are currently used in industry and at home is growing, boding well for the present and future of UV LED technology.
Benwei Lighting Co., Ltd. has been increasing its research and development of UV LED technology for many years, continuously studying the UV LED market space in depth, and summarizing many ideas on how UV LED can match the curing system of products such as inks and coatings with the needs of specific applications. Inks, coatings, adhesives and extrusion materials are formulated to respond to a given UV LED output under a specific set of process conditions. For each application and formulation, there is a UV process window within which acceptable curing can be achieved. This window is not narrow, but there is a set of optimal wavelengths, as well as minimum and maximum irradiance and total energy density combinations to achieve correct curing. Continuous operation within this window can better ensure maximum material processing speed, non-sticky surface, curing depth, post-curing migration within established limits, optimized yield, product quality over time, and optimal product life within the intended use and other required standards. UV LED technology performs well when the UV output is correctly matched to application needs and paired with properly formulated inks, coatings, adhesives or extrusion materials. Unfortunately, there is no universal UV LED system or process window that works equally well for all applications in all markets and machine types. The UVLED solution and its output must be selected based on the formulation, coating weight, factory or workshop environment, and the configuration and speed of the material handling system.
Below I list some wavelengths and where they are used
365nm, suitable for mobile phone screens, LCD screens, car navigation screens, green oil curing, paint and welding dispensing;
395nm, suitable for acrylic, glass, traceless hooks, shadowless adhesive bonding;
405nm, curing 3D printing resin
