Why tin printing after a layer of light oil
Bright oil is common in epoxy resin, alkyd resin, acrylic resin, acrylic amino, etc., the composition is different, the performance is also different, and the use is not the same. Usually according to the process whether there is a deep stamping deformation, welding local high temperature heating and the need for high pressure cooking and so on, choose different types of varnish.In order to increase production efficiency and save energy, in general, the last printing process is combined with the glazing process.In addition to the roller coating can be used, but also can be printed light ink method, both gloss is not much difference, but the processing performance is better than roller coating.
Varnish should have the following properties:A) the color retention property is good. The solvent in the varnish can not make the ink fade and fade.(b) have sufficient hardness and firmness in order to withstand the deformation of subsequent processes.(c) match with white paint or base oil, not to corrode white paint or base oil.
The performance of tin light oil to complete all printing tin printing, to cover a layer of light oil, to increase the printing surface gloss and anti scratch performance, but also increase a certain hardness, the printing surface coating has certain flexibility and corrosion resistance.
