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Printech Archives, May 1998: Re: MixMasters Ink recycling software for Screen Printing?

Re: MixMasters Ink Recycling Software for Screen Printing?

Mike Ukena (
mukena@gte.net)
Tue, 26 May 1998 11:12:25 -0400


In all of my work with the SGIA and tech support for screen printers, I have
not heard of anyone using a MixMaster recycling sytem for screen printing
inks.

I do think that based on my interpretation of your posting, that such a
system would be difficult to manage in the screen process. A few of the
drawbacks would be:
1. the large variety of different ink brands and types used in each shop.
2. the variation in opacity of inks even within brands, limits the mixing
potential
3. present ink room practices.

Remember that there are quite a few screen ink types and also several screen
print specialities. Graphic screen printers may use solvent based ink
systems and UV ink systems. Those that specialize in UV may actually be the
best candidates for such a recycling system as their inks are the most
"homogeneous" in terms of additives, opacity, etc.

Textile printers would probably not be good candidates. Although their
predominant ink is plastisol, most use an extremely wide variety of
plastisols. Everything from transparent process colors to very high opacity
athletic inks. Mixing these inks together causes the resulting ink to turn
to "mud". The key is the impact of the opacifiers and extenders. Even
casually mixing several waste inks together is a roll of the dice.

I would be interested in more information, however. It would be nice to be
able to recommend a system to help screen printers reduce their waste ink.

Mike Ukena


 

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