The spectral range of industrial ultraviolet light source is 200 nm -450 nm.
I. About UV printers:
UV printing machine is a high-tech full-color digital printing machine without any material restrictions. It can be used for color photo printing of T-shirts, sliding doors, doors, sliding doors, glass, plates, various signs, crystals, PVC, acrylic, metals, plastics, stones, leather and other surfaces.
Second, the characteristics of UV printer:
Printing can be completed at one time without plate making, with beautiful and rich colors, wear resistance, ultraviolet protection, simple operation and fast printing image, which fully meets the industrial printing standards.
Third, about UV curing machine
UV curing machine can also be called UV curing machine (UV curing furnace, UV curing machine). Simply put, it is a surface treatment machine. UV curing machine is used for UV spraying of paper, PVC and plastic products and curing of ink layer after printing. It is an environmentally friendly ink drying method at present. Under the excitation of instantaneous high voltage, the ultraviolet lamp tube is lit, and ultraviolet light with the main peak of about 360nm is emitted, which irradiates the acrylic resin on the ink layer and initiates the cross-linking and curing of the ink. Drying treatment of UV pad printing ink in the process of UV pad printing, and ink performance test of UV ink factory. Working on the workbench is suitable for curing small products, testing and proofing.
Fourth, the principle of ultraviolet curing
Adding initiator (or photosensitizer) to the resin with special formula will produce active free radicals or ionic groups after absorbing high-temperature ultraviolet light in ultraviolet curing equipment, thus triggering polymerization, crosslinking and grafting reactions, making the resin (UV paint, ink, adhesive, etc.). ) will change from liquid to solid (unequal) in a few seconds. Suitable for all kinds of PVC, plastic sheets, computer keyboards, mobile phone buttons, etc.