Second, poor drying, light curing is not complete, the surface is sticky

main reason:

1. Insufficient UV light intensity.
2. UV lamp aging and strength weakened.
3. UV light oil storage time is too long.
4. Do not add too much diluent to the reaction.
5. The machine speed is too fast.

Solution: In the case of a curing speed requirement of less than 0.5s, it must be ensured that the power of the high-pressure mercury lamp is generally not less than 120W/cm, the lamp should be updated in time, and do not wait for the bad to change. If necessary, add a certain amount of UV varnish curing accelerator to accelerate drying.