UV Coating Problem - Easily Scratches

[dkelliher@carterprinting.com]

We are experiencing a problem with the application of UV coatings not adhering well to the printed area in that the printed area is susceptible to scratching. The specs are: Sterling 100# Ultra Gloss cover, Process colors only, no primer coating, has been dusted prior to UV and the second side is coated with flood Satin Aqueous. If you have experienced anything of this sort and formulated a solution would you please offer your opinion? Thank you. Dan

[turbotom1052]

why satin aqueous on a high gloss sheet like the sterling ultragloss?

[Cold]

Are the process colors conventional and are they suitable for UV coating without a primer? If so, are you allowing enough time for the ink to cure before applying the UV coating? Can be 24 - 72 hours.

[jonprintz]

Are the process colors suitable for UV coating without a primer?

This is what I would suspect first. You may still be able to apply your UV coating with good results if you apply a primer AQ first.

[Ti7]

Are you using wax free inks? Too much alcohol substitute in the water will also cause this problem.

[apolloUVGOD]

Got those non-skin inks ?
or Work & Turn with a dense Black ?
Work and turn AQ ? Dry fast and coat too.
UV our stuff might do it.
Curtis @ Al's Co.

[herbert]

We are experiencing a problem with the application of UV coatings not adhering well to the printed area in that the printed area is susceptible to scratching. The specs are: Sterling 100# Ultra Gloss cover, Process colors only, no primer coating, has been dusted prior to UV and the second side is coated with flood Satin Aqueous. If you have experienced anything of this sort and formulated a solution would you please offer your opinion? Thank you. Dan

Use UV inks if you are not putting a primer down

[ohgoditsart]

#1 - need UV inks, #2- drying time depends on Dyne level of the ink if it's flaking. Try running a sheet through with the heaters on. The before it cools off run it through with UV on it. See if it flakes. If it doesn't run a small load on heat then cover with plastic, run another small load cover with plastic. Run the first load with UV, wind it up asap. Run the 2nd load though with UV... continue as needed.