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Treating
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Most plastics are
naturally nonpolar and typically carry additives and
demolding agents on their surface so that inks,
coatings, or adhesives don’t easily stick to them. For
example, inks and paints often just run off newly
thermoformed or molded parts that have inert, nonporous,
low-energy surfaces. Surface treatment of 3-D parts
facilitates high quality printing, allows for clear
readable markings on the surface and improves the
adhesion of labels and coatings. |
InPro Technologies
represents a line of surface treatment equipment
manufactured by Enercon Industries
www.enerconind.com.
Enercon offers various technologies for the in-line
treatment of 3-D parts, all of which offer an economical
alternative to chemical primers, batch treatment or use
of specialized coatings & adhesives. |
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Air Plasma (Corona)
Enercon’s Dyne-A-MiteHP is a
powerful and economical way to improve surface adhesion
on 3-D parts. Air plasma is formed by blowing
atmospheric air past high-voltage powered electrodes and
is sometimes referred to as corona treatment. The
electrical discharge positively charges the ion
particles surrounding it. Through direct contact, these
particles positively charge the treated area of the
object’s surface. This makes the surface more receptive
to any applied substance, including inks, coatings or
adhesives. The Dyne-A-MiteHP’s unique design generates
an aggressive blown arc discharge that is ideal for
higher line speeds and demanding applications. It is
available as either a single or double head unit,
depending on the surface area to be treated. Ideal for
PE, PP, PET, nylon, vinyl, polystyrene, polycarbonate
and PVC, the Dyne-A-MiteHP is easy to use and
inexpensive to operate.
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Chemical Plasma Variable chemistry plasma
(VCP) is formed using basic principles found in
air-plasma and flame-plasma treatment. Much like an
air-plasma field, a chemistry plasma field is generated
in an electrically charged atmosphere. Instead of air,
this method relies on other gases, typically argon or
helium, that deposit various chemical groups on the
substrate surface to improve its surface energy.
Variable chemistry plasma treatment is essentially a
fine etching process that provides different surface
characteristics depending on the gas chemistry employed.
Enercon’s Dyne-A-MiteVCP systems are the most gentle and
advanced of the technologies and are ideal for delicate
and hard to treat materials. |
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Blown Ion Discharge Blown-ion air plasma
systems push pressurized air past a single electrode
which discharges inside the treater head. The eletrode
creates positively charged ions in the surrounding air
particles. The air pressure forces the air particles to
accelerate out of the tip of the head as a high-velocity
stream of charged ions directed toward the substrate
surface. Through direct contact, these particles
positively charge the object’s surface, increasing its
surface energy and making it more receptive to inks and
coatings. Air plasma is a popular surface-treatment
technology because it is effective, easy to use and
inexpensive to operate. In addition to treating a
variety of plastics, the Dyne-A-MiteIT is ideal for the
treatment of conductive surfaces, electronic parts, and
glass. |
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Flame Plasma A plasma field is formed
when flammable gas and air are combined and combusted to
form an intense blue flame. Brief exposure to the
energized particles within the flame affects the
distribution and density of electrons on the substrate’s
surface and polarizes surface molecules through
oxidation. This method also deposits other functional
chemical groups that further promote ink wetting and
adhesion. Enercon’s Dyne-A-Flame treater generates more
heat than other methods, but creates greater surface
energies with longer shelf life. Flame treatment is
commonly used to process injection and blow-molded parts
because of the thickness, size and shape of the parts.
Narrow Web Treaters
Enercon Industries offers both standard and custom
designs for narrow web corona treating. The XL series
compact treater fits virtually all narrow web presses. A
clamshell design facilitates easy web threading, and
hinged and slip-off electrode cartridges can be easily
removed, making cleaning and maintenance a breeze. No
tools, disassembly, realignment or air gap adjustment is
required. The power supply is built right into the
station and ducting for ozone removal has been
positioned to maximize operator work space. This series
is available in 10”, 14” and 18” treat widths. The TL
series treater combines the power supply and treating
station into one easy-to-install unit. The treatment
capability and reliability is identical to the TLMax,
only the packaging has changed. The TLMax series is
available in 10”, 14”, 18” and 22” treat widths. |
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