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Media and Communications

Screen Printing Poster Art : Ink Differences And Preparation

Screen Printing Poster Art : Ink Differences And Preparation

In this video, we’re going to review the basics
of screen printing inks. There are three major different kinds of screen printing inks on
the market, water-based screen printing inks, textile screen printing inks and oil. Water
and oil are completely different. Oil does require the use of turps, and mineral spirits
is toxic and can’t be dumped down the drain. Water, however, can be. It’s totally non-toxic
and it can definitely go down the drain. When mixing ink, you want to make sure you’re using
an extender as well as a retarder. And your extender is mixed fifty-fifty. So, here’s
my black ink and I’m going to put a scoop of the extender base into here. So extender,
it extends the lifespan and the color thread of your ink. This is really important for
screen printing because ink has to be of a certain viscosity and a certain fluidness
in order to be pushed effectively through the holes. Think about it this way, the holes
are super, super small. Once it’s well mixed in, you can see it has a nice, almost ready
texture, yeah, that’s pretty mixed, pretty much mixed in now. You’re then ready to add
your retarder. So retarder does just that. It retards or slows the drying time of your
ink. Somebody once told me it makes water wetter. Put just a few drops in here and mix
it in well. This gives you flexibility when you’re printing. It allows you to not have
to run basically and it helps to add a little bit of fluidity to the ink.

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