UV Ink spitting

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UV Ink spitting

Postby Leadpress » Mon Dec 03, 2018 7:08 pm

Guys, I am having alot of trouble with UV ink spitting. I'm laying down a green solid on a 600-3.05 bcm. I've always used the same ink with the same anilox, but I don't know if it's the weather or what. I used a heat gun to get rid of the foaming and to help make my ink less viscous? It's working, but I alomost started a fire! LOL. any ideas????
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Re: UV Ink spitting

Postby dkelley » Wed Dec 05, 2018 1:12 pm

You can purchase a viscosity reducer from most in suppliers I use Flint.
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Re: UV Ink spitting

Postby dkelley » Wed Dec 05, 2018 1:14 pm

And a Lamella tip doctor blade will help.
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Re: UV Ink spitting

Postby Gory » Fri Dec 07, 2018 12:47 pm

If you are associating the spitting with the foaming, I would try a de-foamer first.
If you are associating it with viscosity, try a viscosity reducer first, whilst also checking that this batch of ink is in spec (hard to believe I know, but sometimes ink manufacturers make out of spec batches, and they can even get by QC on occasion).
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Re: UV Ink spitting

Postby Leadpress » Wed Dec 12, 2018 12:56 pm

Thanks guys, all of these Ideas are awesome, I will try all of them.
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Re: UV Ink spitting

Postby Buck from N.C. » Thu Jan 17, 2019 7:21 pm

Try Swed Cut doctor blades. They're great for UV inks!!!
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Re: UV Ink spitting

Postby donaldwal » Sat Jan 19, 2019 5:54 pm

I use 5 gallon bucket heater bands on my UV when I leave for the day and keep it warm until morning granted this is for pumping purposes.... It reduces the Visc greatly.... When I am going to run UV white from GALLON Jug I have had good success Submerging the jug in a sink of hot water to loosen it up prior to pouring it in my pan... Hope this helps
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Re: UV Ink spitting

Postby Leadpress » Wed Jan 30, 2019 2:26 pm

Thanks Buc and Donald. Great ideas. I actually did warm up my ink this week and it helped a great deal. I also used double blade/ Swed cut, and it helped out really well.
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Re: UV Ink spitting

Postby donaldwal » Tue Jul 16, 2019 6:03 pm

what IS THIS DOUBLE BLADE you speak of?
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Re: UV Ink spitting

Postby Leadpress » Tue Jul 23, 2019 3:48 pm

donaldwal. Sometimes I use two blades together when I'm having a hard time with my uv ink spitting. It just helps alot with deflection. There's times when the ink is really thick, especially in the winter months.
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Re: UV Ink spitting

Postby donaldwal » Wed Jul 24, 2019 8:40 am

two blades set together on top of each other in the same holder?
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Re: UV Ink spitting

Postby Leadpress » Wed Jul 24, 2019 5:05 pm

donaldwal. Yes!! If you have rounded edge blades, you can use those too. When you are running uv inks, you need to use blades that are made for uv inks, if you use the same ones that you use for waterbase, you'll have problems.
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Re: UV Ink spitting

Postby wdustin1 » Fri Jul 26, 2019 11:56 am

We having spitting issues with a few certain older aniloxes, the best solution i have found is using the plastic Dr. blades from Flexo Concepts. It doesn't provide as clean of a scrape as the steel ones do so it ends up being a little heavier of a ink laydown than a steel blade would provide but it totally eliminates the spitting.
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Re: UV Ink spitting

Postby Leadpress » Wed Sep 04, 2019 3:47 pm

Wdustin, thanks
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