UV varnish for PVC packaging boxes can be divided into two types: traditional printing protection varnish and anti-scratch oil. During the printing process, UV varnish for PVC packaging boxes should be noted as follows:
Notes for UV varnish printing of PVC packaging box
1. UV printing varnish can be used normally at the temperature of 50-55℃.When printing in winter, it needs to be heated with constant temperature water to reach the normal service temperature before fast curing.
2, in the radiation irradiation region, the best printing temperature of UV varnish in 50-60℃, at this time the use of UV varnish adhesion is strong, fast drying.That's why.Some UV paints do not adhere well after printing because they are not used at the correct temperature.
3, PVC packaging box printing process can not be directly under the sun, UV varnish will be solidified because of the direct sunlight, can not complete the UV printing task, if you can not avoid sunlight, you need to use red and black curtains to block the sun, and then print.
4, on the UV varnish after printing the remaining varnish on the machine, after filtering, but also continue to use.
5, in the PVC box printing process, due to the glazing operation and skin contact with UV varnish, or need to use soap and water immediately clean, otherwise there may be skin swelling, bubble symptoms.