Author Topic: Aquasol HVP reclaiming  (Read 1399 times)

Offline tpitman

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Aquasol HVP reclaiming
« on: June 16, 2013, 03:28:44 AM »
I've noticed a tendency for this emulsion to sort of gum up into balls or sheets when reclaiming, rather than dissolve cleanly. I use EasiSolv 820 as a press wash, EasiSolv 701 as an ink degradent, and EasiSolv 5 diluted as an emulsion remover. Anyone else having issues with reclaiming?

Secondly, in addition to this, I was reclaiming a bunch of screens last night. A mix of screens with the Aquasol HVP and Ulano QX-1. The common denominator between them was I'd printed the job with Union's Process Color inks. I'd taken the screens straight off the press to the washout sink a couple of days ago to get the ink out of them with 701. Upon reclaiming last night, the Aquasol exhibited the "normal" gummy balls of emulsion, but with the Ulano, it damn near wouldn't reclaim. Scrub and scrub, barely making a dent. Concentrated pressure wash would move it s-l-o-w-l-y. Oddly, I'd just refilled my bottles and wondered if I'd mixed up the 701 with the EasiSolv 5, so I tried spraying with what I thought was (and was indeed) the 701, and the emulsion came right off. Had to do it on another screen, too. Doesn't make sense. Since I'd only had one beer I know THAT wasn't it.
I can't remember ever having issues reclaiming screens after using Union's process inks before, but that's the only thing that I can point to. Normally, the QX-1 emulsion melts off the screen without much scrubbing.
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Offline blue moon

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Re: Aquasol HVP reclaiming
« Reply #1 on: June 16, 2013, 09:42:15 AM »
Union's process inks have a different chemistry and are more difficult to reclaim when used with SBQ emulsions. Their spec sheet calls for diazo or dual cure emulsion. . .

pierre
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Offline ScreenFoo

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Re: Aquasol HVP reclaiming
« Reply #2 on: June 16, 2013, 01:21:35 PM »
Yep, the plasticizer in tru-tone inks is pretty aggressive on stencils and squeegee blades as well. 
Ever notice little lines on the blades where the ink was? 

Even with the DC I use I notice they're a bit more difficult to reclaim, but for how quick 305's go anyway, it's never a big deal.

Offline tpitman

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Re: Aquasol HVP reclaiming
« Reply #3 on: June 17, 2013, 03:40:47 AM »
Yeah, I clean the squeegees as soon as I'm done printing with it. Makes the blade swell up a little.
Work is the curse of the drinking class . . .