by clicking the arrows at the side of the page, or by using the toolbar.
by clicking anywhere on the page.
by dragging the page around when zoomed in.
by clicking anywhere on the page when zoomed in.
web sites or send emails by clicking on hyperlinks.
Email this page to a friend
Search this issue
Index - jump to page or section
Archive - view past issues
FLEXO Magazine : May 2012
Technologies & Techniques Innovations in Metallic Pigments shrink sleeve labels’ glamorous option By Ray Verderber and scott schultz Thousands of shrink-sleeve SKU’s have been showing up on the store shelves over the last several years. The use of thermoformable or shrink sleeve films in packag- ing continues to show tremendous growth in the marketplace. It’s no surprise that the demand for metallic inks with special thermoformable properties is desired as that differentiator on the shelf. Although metallic inks have been readily available for waterborne, solventborne and ultraviolet (UV) curable sys- tems, metallic inks have posed a special challenge in certain applications. The UV curing process itself has limited the use of metallic inks in shrink sleeve films, but new advancements in metallic pigment technology have helped to break down these barriers. This article will help explain the differences among different curing technologies of metallic inks, the chal- lenge of utilizing traditional metallic pigmented inks for UV flexo shrink sleeves and how this challenge has been met. METALLIZED ADVANCEMENT • Metallic inks have posed a special challenge in certain applications; the UV curing process, for ex- ample, has limited the use of metallic inks in shrink sleeve films • The metallic effect is derived from metal particles such as brass, which creates a gold hue and alumi- num, which creates a silver color • The curing process used to print shrink sleeve labels as well as the choice of metallic pigment has a major impact on the behavior of inks • Advanced milling technology has created a new me- tallic pigment that has non-leafing-like behavior and now can be used in UV ink formulations • New UV curable pigmented ink has outstanding color stability over other traditional metallic pigmented UV printing inks 36 FLeXO may 2012 www.flexography.org