Waterless printing plate and process features brief introduction

The structure of the plate is composed of an aluminum plate base, a photosensitive resin layer, and a silicone rubber layer. When exposed, the visible silicone rubber layer reacts, the silicone rubber layer is removed by the developer, no light is formed to form a blank portion of the printing plate, and a negative plate is formed.

The graphic part of the negative type horizontalless version is slightly concave, the ink is not easy to spread after inking, and the blank part of the silicone rubber layer has a repellent effect on the ink, therefore, the wetting liquid may not be used during printing, thereby avoiding the occurrence of the wetting fluid. Many failures. Waterless offset printing inks have lower viscosity and adhesion than water offset inks. The main components are high-viscosity modified phenolic resins and high-boiling non-aromatic solvents that are easily decomposed when exposed to heat. Therefore, when printing, the ambient temperature must be Keep it right.

Waterless offset printing, with a small dot gain value, the dot gain value can be controlled within 3%, and 200 to 500 lines/in fine lines can be used to print high-resolution prints. If combined with FM screening technology, it can print unparalleled high-grade fine prints. Waterless offset printing eliminates difficult-to-control water and no ink emulsification. Ink prints are uniform and highly saturated. When printing with waterless offset printing, generally 5 sheets of paper can be used for the formal printing, and the paper consumption is low and the production efficiency is high. Waterless offset printing, as an advanced printing technology, may replace the traditional water offset printing.

Since waterless printing does not use a fountain solution, no emulsification of the ink occurs. However, due to the lack of moistening water during the printing process to repair and clean the layout, the layout is easy to produce dirt. For this reason, the printing pressure of waterless printing should be lower than that of PS printing.