Polyethylene wax powder to prevent printing ink - deposition on stacked surfaces

摘要

Fresh printing-ink deposition on reverse of stacked printed surfaces in delivery piles is prevented by dusting the freshly printed surfaces with powder containing or consisting of natural or synthetic wax, pref. polyethylene wax, more pref. of particle size 100-300 mu. Slidability is reduced by pref. addition of up to 95 weight % CaCO3 powder of 15-30 mu particle size.