Screen Printing - June/July 2013 - (Page 26)
T-shirts to
Medical Trays
An Intro to Ir conveyor Dryers
The IR conveyor dryer has a
home in applications beyond
screen-printed garments.
Mark Vasilantone
Vastex International, Inc.
One
of the most critical steps in
the screen-printing process is drying, or
curing, of ink after it has been applied
to the screen-printed product. This is
accomplished by heating the ink to
the temperature at which it cures, as a
printed garment or another item passes
through a dryer on a conveyor belt.
Popular plastisol inks require cure temperatures of approximately 320-340°F,
while other types of ink cure or bond at
slightly different temperatures.
Choosing between
gas and eleCtriC
Gas and electric dryers offer different advantages depending on budget,
required capacity, available floor space,
and the cost of gas and electricity.
Gas dryers have an open flame
that heats air within a chamber and
transfers the heated air to the area
through which garments or other printed
items are conveyed. The heat is then
transferred to the ink by air convection,
equivalent to heating food slowly in a
gas oven.
An electric dryer, by contrast, uses
infrared (IR) radiation that causes ink
molecules to vibrate, generating heat
that raises the temperature of the ink
rapidly without heating the air around it,
26
screenprinting
Table of Contents for the Digital Edition of Screen Printing - June/July 2013
Screen Printing - June/July 2013
Contents
Editorial Insights
New Products
Standardization Secrets for Screen Printing
Eliminating Variables in the Screenroom
Decorating Trends in Team Wear
T-Shirts to Medical Trays: An Intro to Ir Conveyor Dryers
Distributor/dealer Directory
Opportunity Exchange
Ad Index
Screen Printing - June/July 2013
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