What is the matter of tinsel surface printing?

What is the matter of tinsel surface printing?

Varnish performance

Finished all printed tinplate prints, need to be covered with a layer of bright oil, in order to increase the surface gloss and scratch resistance of the print, but also increase the hardness, so that the print surface coating has a certain degree of flexibility and corrosion resistance. Varnish should have the following properties:

a) The color retention performance is good, and the solvent in the varnish cannot make the ink bleed or fade.

b) Has sufficient hardness and firmness to withstand the processing distortion of the subsequent process.

c) Match white or base oils and do not attack white or base oils.

Bright oil common epoxy resin, alkyd resin, acrylic resin, amino acid and other amino acid, the composition is different, the performance is also different, the use is not the same. Usually, different types of varnish are used depending on whether there is deep stamping deformation in the post-process, local high-temperature heating of the welding, and whether high pressure cooking is required.

In order to increase production efficiency and save energy, the final printing process is generally combined with the coating process.

In addition to coating with a roller, coating can also be used for printing glossy inks. There is not much difference in gloss between the two, but the processing performance is not as good as roller coating.

In addition to bright oil, there are matte oils, wrinkle oils, and pearlescent oils. Bright oil has a high gloss effect, which is in line with people's traditional aesthetic habits. Matte oil, on the other hand, can make the surface of printed iron products dull, with a papery texture and elegant decorative effect. After the wrinkle oil coating is formed, it is shaped like crystal transparent scaly. The light reflection makes the beautifully printed pattern on the tinsel three-dimensional. From a different point of view, it is rich in art appreciation value. The pearl varnish is applied to a large area of ​​the exposed white plate with a pearl-like luster to set off the bright and bright printed artwork. It also has high aesthetic value.