Approved transfer of water deposited on the transfer film tiled water tank, graphics layers up to keep the tank water clean and basically in neutral state, with the activator even in the graphic surface coating layer, the map text layer active, easy-to-film separation occurs with the carrier. activator is an aromatic hydrocarbon-based organic solvent mixture, can quickly dissolve polyvinyl alcohol damage, but will not harm graphics layer, so that graphic in the free state. Activation temperature is a key factor affecting film, the higher the temperature, the faster activation, but the high temperature is also very easy to wrinkle the surface of the film Yi, so the water temperature is generally maintained at 30-40 degrees.
Water transfer process:
Will need to transfer the products of water, along the contours of the product gradually close to the water transfer film, graphic layer under the effect of the pressure slowly transferred to the surface of the product, because the ink layer and the substrate, or a special coating adhesion inherent the formation of adhesion. and free of ink film layer attached to the surface of the product. In the transfer process should be noted that to maintain the speed of substrate to fit evenly, to avoid film folding unsightly wrinkles Yi so graphic, in principle, to ensure proper stretching as far as possible from repeated graphics, especially junction, overlap over more, gives a feeling of clutter. The more complex the product the higher the operating requirements for brush does not require disclosure of the overall product, it is important to take measures to block the link.
Remove the workpiece from the tank, remove the residual film, and then clean water, wash away the surface of the product without fixing the floating layer, not too much attention to pressure, or easy to transfer graphic damage.'s Production line automatic washing equipment will significantly improve the quality and production efficiency washing, easy division of labor.
Remove the product surface moisture is conducive to transfer ink to dry thoroughly, increase fastness, dry and hair dryer available, the product can also be placed in dry boxes dry, plastic products can not be too high drying temperature, roughly 50-60 degrees , the temperature is too easy to substrate deformation, for metals, glass, ceramics and other materials, the temperature can be raised.
Spray paint protection:
Graphic layer to enhance the environmental resistance to treatment in the surface paint, painting can be varnished with solvent-based spray, natural drying and heat drying, UV varnish can also be used, the use of UV-curing dry, compared to UV curing reflects the environmental protection requirements.
Solvent-based varnish with matching hardener mix, water transfer is a polyurethane spray varnish resin binder varnish, hardener to use with PU coating thickness by adding the appropriate amount of diluent to improve the varnished viscosity control, and finally in the oven to prevent drying. graphic layer attached to the post-gloss varnish is also greatly improved. for different printing materials, Varnish is also divided into three types, suitable for plastic materials, varnish, suitable for flexible materials, varnish, suitable for glass, metal and other non-absorbent materials, Varnish .
Despite the water transfer process itself is little risk, but some of the water transfer process chemicals on the human body is water transfer equipment is not high degree of automation injury still relatively large proportion of the manual, these are water transfer some of the problems currently faced by the printing equipment. These issues will continue to be improved.