Screen Printing - June/July 2019 - 23
THE UV LED CURING PROCESS
Courtesy of Phoseon Technology.
Sun Chemical offers five UV LED screen inks, including
PD-LED for industrial applications, MPC-LED for plastic
containers, COMETAL-LED for coated metals, VYB-LED for
vinyl substrates, and SunVetro VTGL for glass.
#3: UV LED LAMPS CAN BE BUILT INTO
INDUSTRIAL SCREEN PRESSES
In 2011, Empire Screen Printing (empirescreen.com)
collaborated with Nazdar, Phoseon, and KBA-Kammann
to develop the first roll-to-roll screen-printing press with
built-in UV LED curing technology. Empire continues to use
this Kammann K61 Eco-Press to produce rolls or sheets of
outdoor-durable labels.
According to John Freismuth, president of Empire Screen
Printing, UV LED curing improved Empire's manufacturing
process and allowed them to go from raw materials to finished
goods in a one-piece flow. The company also likes the lower
energy costs, reduced downtime, ability to print on a wider
range of substrates, and ozone-free, environmentally friendly
nature of the UV LED curing process.
Since installing the first unit in 2011 and converting a
6-color screen-printing press that used mercury lamps into a
12-color UV LED screen line, Empire has gone on to convert
75 percent of their presses to LED.
Leakage issues reduced the lifespan of LED lamps that
used water-cooled systems, Freismuth says. "The air-cooled
UV LED lamps have not had any issues. We are in the process
of converting all water-cooled UV LED lamps to air-cooled."
Omso makes equipment to print on different types
and shapes of containers for the food, cosmetic, and
pharmaceutical industries. They developed their ServoBottle machines specifically to use UV LED screen-printing
inks. The first ServoBottle machines were delivered in
2012 and are used by bottle manufacturers and contract
decorators around the world, the company reports. The
machines can decorate 40 to 80 parts per minute and can
be changed over from one type of container to another in
about 40 minutes. Omso also manufactures ServoJet inkjet
printing systems that print UV LED inks directly onto tubes
and bottles.
Switching to UV LED curing enabled Omso to reduce the
footprint of the bottle-decorating machine while lowering
the maintenance costs and increasing reliability. The average
scrap rate on ServoBottle technology is reportedly less than
one percent.
According to Scott Frey, CEO of Omso North America,
screen-printing companies that want to convert existing automatic presses to UV LED can achieve a return on investment in
24 to 36 months, depending on local energy and maintenance
costs. He notes that, "With modern inks and ample UV LED
output, there are few limitations to using UV LED screenprinting inks."
JUNE / JULY 2019
23
http://www.empirescreen.com
Screen Printing - June/July 2019
Table of Contents for the Digital Edition of Screen Printing - June/July 2019
Contents
Screen Printing - June/July 2019 - Cover1
Screen Printing - June/July 2019 - Cover2
Screen Printing - June/July 2019 - 1
Screen Printing - June/July 2019 - Contents
Screen Printing - June/July 2019 - 3
Screen Printing - June/July 2019 - 4
Screen Printing - June/July 2019 - 5
Screen Printing - June/July 2019 - 6
Screen Printing - June/July 2019 - 7
Screen Printing - June/July 2019 - 8
Screen Printing - June/July 2019 - 9
Screen Printing - June/July 2019 - 10
Screen Printing - June/July 2019 - 11
Screen Printing - June/July 2019 - 12
Screen Printing - June/July 2019 - 13
Screen Printing - June/July 2019 - 14
Screen Printing - June/July 2019 - 15
Screen Printing - June/July 2019 - 16
Screen Printing - June/July 2019 - 17
Screen Printing - June/July 2019 - 18
Screen Printing - June/July 2019 - 19
Screen Printing - June/July 2019 - 20
Screen Printing - June/July 2019 - 21
Screen Printing - June/July 2019 - 22
Screen Printing - June/July 2019 - 23
Screen Printing - June/July 2019 - 24
Screen Printing - June/July 2019 - 25
Screen Printing - June/July 2019 - 26
Screen Printing - June/July 2019 - 27
Screen Printing - June/July 2019 - 28
Screen Printing - June/July 2019 - 29
Screen Printing - June/July 2019 - 30
Screen Printing - June/July 2019 - 31
Screen Printing - June/July 2019 - 32
Screen Printing - June/July 2019 - Cover3
Screen Printing - June/July 2019 - Cover4
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