the present invention relates to the use of cellulose nanocrystals blended with a polymeric material selected from a polyvinyl alcohol ) , an ethylene acrylic acid copolymer , other carboxylated polymer latexes , or other polymer blends , and applied as a thin coating layer on plastic films for printing with digital processes such as ink jet and laser printing , as well as with more conventional printing processes such as flexography and offset lithography , to the control of ink adhesion to the plastic film , and to the reduction in the oxygen transmission rate of the plastic film .