The secret heat source of the secret gravure printing machine

[Chinese Packaging Network News] Because the gravure ink layer is thicker than offset printing, when the one-color printing is completed, the drying system must be used to quickly volatilize and dry the ink solvent on the print, so that the ink is fixed on the substrate. Each color should be dried and the ink drying speed should match the printing speed.

The drying method of gravure printing is generally hot air drying. This type of drying device is composed of a heat generating device, a ventilating device, and an air outlet, etc., and the printed sheet is dried by passing through the hot air drying room. The drying speed is controlled by adjusting the air volume. With this drying device, the deformation of printed sheets is small, which is beneficial to guarantee the quality of printed products. Sheets are generally cooled by a chill roll after being dried by hot air.

Now the main heat source for gravure printing machines is the following:

1) The heating process through the heating tube;

2) Drying process by high-temperature steam;

3) Drying process through coal-fired boilers;

4) Drying process by burning diesel oil;

5) Use the Covio hot air dryer as a heat source for the drying process.