Screen Printing - April/May 2020 - 12

IMAGE 4

challenge for printers when they first start doing discharge
because often the print is very difficult to see before it goes
into the dryer. Only after curing can it be checked for pinholes or registration issues (see Image 2).

WATER-BASED PRINTING
The biggest difference with a water-based print and a discharge print is that the water-based print doesn't have any
discharge additives. The inks will work best on shirt colors
that are light enough to show the print. A print on a light
blue shirt with low viscosity water-based inks will look
washed out and have a blue tone (see Image 4).
Using water-based inks to achieve a soft feeling print
requires many of the same considerations as discharge
printing:
a. You need to have the gas dryer to cure properly and
it's the best method to test. Curing is a wash test, so
make sure to do this prior to printing customer orders.
b. The screens have to be hardened so they don't break
down during printing.
c. You will need to change your printing method to avoid
drying your inks in the screens quickly. Most printers
will stop after a flood stroke instead of a print stroke
so the open stencil area has less time exposed to the
air. It's very helpful if the printing area is higher in
humidity.

12

SCREENPRINTING | APRIL + MAY 2020

IMAGE 5

SOFT HAND PLASTISOL PRINTING
Soft hand plastisols can simulate a water-based print on
light shirts. A work around solution for some printers can
be to use an additive to a plastisol ink that will lower the
viscosity and make the ink soak into the shirt, which is
very similar to water-based. The advantage of doing this
with a plastisol ink vs. a water-based ink is there's less
chance of a screen breakdown and the inks won't dry into
the screens. This can be a good solution for a design that
has a lot of thin lines or details and when the printer has an
environment that is very dry (see Image 5). When plastisol
is thinned out in this manner to simulate water-based ink,
it tends to lose opacity, so it may not be bright on mediumand dark-colored garments. This method may not have as
high of a wash resistance as water-based inks, so it can
be critical to wash test this method before running a large
amount of items with it.
Any of these three printing options can create super soft
garments that can end up being your customers' favorite
shirts. Creating a print that has an imperceptible feel to
it that also looks fantastic is possible if you're willing to
invest the time and practice. These methods will lift your
company and printing process to a sought after level.
Thomas Trimingham has more than 25 years as an apparel artist,
separator, and industry author. He is the marketing communications
manager at M&R Companies.



Screen Printing - April/May 2020

Table of Contents for the Digital Edition of Screen Printing - April/May 2020

Contents
Screen Printing - April/May 2020 - Intro
Screen Printing - April/May 2020 - Cover1
Screen Printing - April/May 2020 - Cover2
Screen Printing - April/May 2020 - 1
Screen Printing - April/May 2020 - Contents
Screen Printing - April/May 2020 - 3
Screen Printing - April/May 2020 - 4
Screen Printing - April/May 2020 - 5
Screen Printing - April/May 2020 - 6
Screen Printing - April/May 2020 - 7
Screen Printing - April/May 2020 - 8
Screen Printing - April/May 2020 - 9
Screen Printing - April/May 2020 - 10
Screen Printing - April/May 2020 - 11
Screen Printing - April/May 2020 - 12
Screen Printing - April/May 2020 - 13
Screen Printing - April/May 2020 - 14
Screen Printing - April/May 2020 - 15
Screen Printing - April/May 2020 - 16
Screen Printing - April/May 2020 - 17
Screen Printing - April/May 2020 - 18
Screen Printing - April/May 2020 - 19
Screen Printing - April/May 2020 - 20
Screen Printing - April/May 2020 - Cover3
Screen Printing - April/May 2020 - Cover4
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https://www.nxtbook.com/nxtbooks/STMG/sp_20131011
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