Third, the printed surface of the UV light oil can not paint, hair

main reason:

1. UV Varnish has a low viscosity and the coating is too thin.
2. Ink contains excessive varnish or dry oil.
3. The ink surface has crystallized.
4. Ink release material (silicone oil, dusting) and more.
5. The rubberizing roller is too thin.

Solution: When printing products that require UV coating, appropriate measures must be taken to create the conditions. When applying UV varnish, apply thicker coatings. If necessary, use oil on the base or replace special varnish to solve the problem.