Plastic gravure surface printing ink

Plastic Gravure Surface Printing Ink is a specialized fluid ink system engineered for direct printing onto the surface of non-porous plastic films using the rotogravure process. This high-precision printing method utilizes an engraved cylinder, where ink is transferred from its microscopic cells to the substrate under pressure. Formulated explicitly for plastics like Polyethylene (PE), Polypropylene (OPP, BOPP), Polyester (PET), and PVC, the ink must overcome the inherent challenge of these materials: low surface energy and chemical inertness, which naturally repel liquids and inhibit adhesion.

 

To achieve this, the ink employs tailored resins—often polyurethane, nitrocellulose, or specific acrylic blends—that act as strong binding agents. These resins provide excellent wetting and form a durable, flexible film that anchors the pigments firmly to the plastic surface. The formulation ensures high color strength, gloss, and print fidelity, capitalizing on gravure's ability to reproduce consistent, vibrant images and fine text at high speeds. Key performance characteristics include fast solvent release for rapid drying, strong inter-color adhesion for multi-color work, and good resistance to scratching, rubbing, and friction during subsequent converting processes like laminating, bag-making, or slitting. Primarily solvent-based for robust performance, though water-based variants are advancing, this ink is essential for producing high-quality flexible packaging, decorative laminates, and labels where visual appeal and durability on plastic are critical.