Seven, poor wear and scratch resistance
1, the cause of the failure
1 Photocuring is not complete, and a tough coating with a network structure cannot be formed.
2 The ink is not fully dried, affecting the complete curing of the UV varnish.
3 The intensity of the light source is insufficient, and the speed is too fast, which affects the complete curing of the UV varnish.
4UV Varnish Add too much non-reactive diluent such as ethanol to affect the complete curing of UV Varnish.
2, elimination method
1 to ensure that the full UV light curing, is the basic conditions of UV Varnish wear and scratch resistance.
2 Printed surface is fully dry.
3 Select a higher hardness, better toughness UV Varnish.
4 Varnish can be added with a small amount of polyethylene wax, organic modified silicone and other additives to improve the slip wear resistance.