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Literature Detail
New Raw Material for Thermoformable UV/EB Inks and Coatings
UV flexographic printing is quickly becoming a mainstream process for the creation of decorative flexible packaging. More elaborate packaging schemes are constantly being developed in an industry where the ability to catch the consumer’s eye is key to selling the product. One of the newest trends emerging in narrow web printing is thermoformable UV flexo inks. These inks allow for packaging that can be formed to fit the product container or can be printed directly on the formable container itself. Using Dynamic Mechanical Analysis (DMA), in correlation with tensile and elongation testing, we have been able to benchmark our base monomer and oligomer product line for performance in these type of inks. The analysis looks at the relationship between crosslink density, Tg (glass transition temperature), and molecular weight to determine what materials work best for thermoforming. Finally, the materials are incorporated into UV flexo inks and evaluated on formable thermoplastic substrates to test the theories. All of this leads to the introduction of new resins designed to aid formulators in the development of thermoformable UV flexo inks and coatings.
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