DPL COLD UV Curing system for UV casting/embossing machine
One of the biggest problem of UV hologram casting/embossing process is that UV lacquer stick on casting/embossing cylinder, but why?
As our experience, UV lacquer stick on nickel master mostly caused by “ un-complete finish UV curing”. For example, if UV light only cure the surface but not inside, some of UV lacquer will stick on the master roller when object film passes through master roller. As similar as ink drying process, the light will be difficulty to reach inside through the hard-finish surface even more UV energy is provided. This is why UV lacquer still stick on cylinder even people use 2-3 UV lamps.
To solve this problem, by our paten technology, DPL cold UV system produces high value PEAK Intensity so UV light can easily reach UV lacquer inside first.
On the other hand, in order to avoid UV lacquer is melt by heating, DPL Patented Cold UV curing system use built-in chilling channel for lamp house profile, which make sure the outside lamp house temperature is hand-touchable (means about 30C).
