Zeller+Gmelin is launching two newly formulated opaque white qualities for rotary screen printing. With this latest development, the German manufacturer has optimized its Optiscreen brand series conforming the new products (SR-X55004 and SR-X55400) to all current requirements for raw materials used.
Moreover, both products are silicone-free formulations, providing for preprinting with opaque white and overprinting with other color shades as well as combining with print finishes such as hot foil stamping or printing in thermal transfer processes.
Both inks are formulated without the use of silicon: preprinting is with opaque white and the overprinting is with other color hues or in combination of rotary screen printing with other printing or finishing processes such as hot printing of foil or heat transfer (typically found with sophisticated labels for high-end product decoration).
Two NVC variants Optiscreen SR-X55004 is an untinted opaque white that enables print speeds of 60 m/min to be obtained, while ensuring a safe polymerisation and good adhesion, along with a high rub and scratch resistance on standard media. The Optiscreen SR-X55400 variant differs by an additional violet tinting. This ensures a higher degrees of whiteness, with otherwise identical properties.
Both inks are N-vinyl caprolactam (NVC) free, satisfying EuPIA-requirements that will come into force at the end of the year. In addition they also enable the attainment of good results in low quantities and offer improved rheological properties, reducing the risk of pinholes and enabling the printing of fine writings even at high machine speeds.