Pulse Roll Label Products Ltd has received verification for two of its core UV flexo overprint varnishes (OPV) by the Rochester Institute of Technology (RIT) as part of the HP Overprint Varnish Performance Program.   The company’s best-selling OPV products for the digital narrow web label printing sector include a UV flexo gloss and matt varnish, both formulated with the high resistance properties required for use over digital inks which are suitable for overprinting on HP Indigo and other dig...