water base over UV white

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water base over UV white

Postby donaldwal » Sun May 19, 2019 12:25 am

Has anyone experienced waterbased ink not drying (adhering curing) over UV white? I have had some issues with some jobs I run on clear BOPP where the water based ink scratches off right off the press but after sitting around minutes its fine. Is it the UV white water based combo or the UV white note curing or the BOPP???
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Re: water base over UV white

Postby Buck from N.C. » Sun May 19, 2019 9:12 am

Probably white not curing. No UV varnish on top?
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Re: water base over UV white

Postby donaldwal » Sun May 19, 2019 6:37 pm

the label actually has a pattern UV varnish over top where the varnish is the ink is fine.... Sadly that's only covers maybe twenty percent of the image..
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Re: water base over UV white

Postby wdustin1 » Mon May 20, 2019 7:41 am

We have issues with U.V. adhering to the BOPP, it is fully cured just wont adhere properly. Have you tried corona treating the material, or putting down a primer first before the U.V. white prints?
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Re: water base over UV white

Postby Leadpress » Mon May 20, 2019 6:25 pm

do you have a sample of what it looks like? If you are only using two colors or even three, turn on the two previous uv lamps before hitting it with white uv ink, let it cure through two more lamps after that and then put the waterbase on top
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Re: water base over UV white

Postby donaldwal » Thu Jun 06, 2019 2:59 pm

Sorry for the lack of response.... We have changed the UV lamp and got the Ink supplier in working on the issue.... haven't had a UV white job come up yet I will surely update once I do. THX for all the responses... Btw our supplier of UV white is Monarch .
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