Awards & Engraving

January '20

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Page 53 of 84

A&E JANUARY 2020 • 51 that they also need to be clean and free of any oils, etc. Some metals come pre-coated, such as aluminum for UV digital printing. Plastics — in the trophy market, a great deal of acrylic is used and there are not only primers for acrylic, but there are acrylics that are made for UV digital printing. Other plastics such as ABS, styrene, and polycarbonate do not need primer and are easily printable. Polyolefins (PE and polypropylene) need to be tested as there are many different types. In general, they will need some type of wipe-on primer or pre-treatment; either with flame, Pyrosil, or plasma. Read more about best pretreatment practices for UV-LED applications in the premiere issue of The UV-LED Report in the October 2019 issue, page 38. One available pretreatment option is Pyrosil. But don't forget to always test as different substrates, printers, and pretreatments will yield different results. IMAGE COURTESY APPLIED SURFACE TECHNOLOGIES LLC A&E

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