Existing residual adhesive cardboard under pressure: of course for the new production equipment in terms of technology, or in the device are greatly improved, for example, the installation of UV, IR drying device, and between two adjacent unit increase paper transmission time, it is a better method. But for the drying device is not installed on the printing equipment, will have to adopt the traditional powder, small duo solution. And the powder will often bring printing gloss decrease and filming difficulties, but also will cause pollution to the production environment, equipment. We know from the sticky dirty on the back was due to the positive pressure ink layer residual adhesive and substrate is above, so as to overcome any factors can solve the problem of back stick dirty.