Dag Printing Inks Co. Manufactures Gravure Inks for Treated Polyethylene. Dag Printing Inks Co. Also manufactures Flexible-packaging inks, Rotogravure and Flexographic Liquid Inks. Gravure Inks for Treated Polyethylene provides Print finish of high quality. It has high print density. These inks are used extensively in the fast growing multi-layered film, laminates and disposable packaging industry. These printing inks can be used in printing on different things, like Papers, Foils, Boards, HDPE/PP woven sack and metalized PVC/PET/ paper. This is used for polypropylene PVC and a wide range of Olefinic substrates.