Before applying press varnishes, allow inks to dry at least 24 hours. Typical polycompound varnishes, such as Algan AOV 409, work well on metallized papers. See your ink supplier for recommended over varnishes. It is very important to have an ink supplier make ink recommendations based on lab testing. Conventional web-offset inks show acceptable results yet, must be run at reduced web temperature and line speed.
Metallized papers contain a thin plastic coating which is thermally sensitive.
By the same token, too low a web temperature will prevent acceptable ink dry, causing offsetting. FPM are not recommended. Recommended web temperatures are based on dryer lengths of 30 ft. 2-zoned with air flotation. Shorter dryer lengths require lower press speeds and higher web temperatures to allow sufficient ink dry.