Hydrographics or HydroGraphics, also known as immersion printing, water transfer printing, water transfer imaging, hydro dipping or cubic printing, is a method of applying printed designs to three-dimensional surfaces. The hydrographic process can be used on metal, plastic, glass, hard woods, and various other materials.
The water transfer printing process is extensively used to decorate items that range from entire all-terrain vehicles and car dashboards, to small items like bike helmets or other automotive trim. Films can be applied to all types of substrates including plastic, fiberglass, wood, ceramics, and metal. For the most part, if the item can be dipped in water and can be painted using traditional techniques then the hydrographic printing process can be used.
1. The object to be dipped is prepared accordingly and the correct base coat colour is applied.
2. A polyvinyl alcohol film (PVA) is printed with the graphic image to be transferred, and is then floated on the surface of a large tank of water.
3. An activator chemical is sprayed on the film to dissolve it into a liquid and activate a bonding agent.
4. The piece is then lowered into the tank through the floating ink layer. The ink layer along with the polyvinyl alcohol backing then wraps around and adheres to the object. The adhesion is a result of the chemical components of the activator softening the base coat layer and allowing the ink to form a bond with it.
5. After removing the piece from the water, the object is lacquered. This protects the dip as well as achieving the desired gloss level.