Underground Construction - May 2022 - 18

SPECIAL ADVERTISING SECTION
What is the Difference Between UV and Bluelight LED?
Light-cured lateral CIPP lining is one of the most popular trends in
trenchless rehabilitation technologies and one of the questions we hear a lot
is, " what's the difference between Bluelight LED and UV? "
All light-curing systems are based on photo-initiating resin, meaning the
resin is specially formulated to cure only when exposed to a specific range
of wavelengths of light within the electromagnetic spectrum.
Light penetration and exposure time are incredibly important for curing
quality in all light-cured systems, and this fact shaped how our Bluelight
system was developed. If the curing light does not fully penetrate the resin,
or if the exposure time is too short, the outer layers of the CIPP may not cure
properly where the liner meets the host pipe. This also effects the overall
strength of the CIPP composite, which may not meet ASTM F1216 standards.
The biggest difference between Bluelight and UV lateral CIPP systems
is the wavelength of the light used. UV systems cure using ultraviolet light
which is a wide range of wavelengths from 100 to 400 nanometers. The
Bluelight system cures using specifically blue light (hence the name!) which
is a very focused range of visible light: 444 to 457 nanometers (nm). This
makes a huge difference in the quality and speed of the cure, and its why
HammerHead's light-curing system uses Bluelight rather than UV.
The wide spectrum of UV light is less intense and lower in wattage
than blue light, which can create issues penetrating the resin leading
to an incomplete cure. UV-cured resins are typically used with liners
constructed with fiberglass and a reflective outer foil to help refract the
UV light and increase its ability to penetrate the resin. Even with these
additions, cures are less consistent with UV light than with Bluelight due to
the weakness of penetration.
The Bluelight system's patented LED light head ensures deep
penetration and a complete cure that does not rely on glass or foil in the
liner. The static head design with 360-degree LED lights ensures the entire
circumference of the liner is exposed to light throughout the cure. The
Bluelight system's smart technology manages the light head travel speed
based on the liner diameter and thickness. Taking the guesswork out of
light head pullback speed ensures that light penetrates the resin fully to
ensure an efficient and complete cure every time.
ABOUT HAMMERHEAD BLUELIGHT LED
LINING SYSTEM
The Bluelight LED CIPP lining system from HammerHead®
Trenchless is
the most advanced light-curing system available for the rehabilitation of
laterals and small drainpipes. The innovative technology empowers CIPP
installers by alleviating the time pressures of other lining systems. The
specially formulated resin only cures under light in the blue wavelength
(444-457 nm) giving installers unlimited working time between liner
wet-out and curing. Once the liner is in place, the automated curing
system pulls the LED light head through the liner, curing the resin almost
instantly - as fast as 5.4 feet per minute. Instead of waiting hours for the
liner to cure, a 50' sewer line could be fully cured in under 10 minutes. The
HammerHead Bluelight system features an intuitive touch-screen interface
and three light head options to cure liners 3 to 10 inches in diameter. For
more information, visit www.hammerheadtrenchless.com; 800.331.6653
ABOUT HAMMERHEAD TRENCHLESS
HammerHead®
Trenchless, a Charles Machine Works Company, of Lake
Mills, Wisconsin, USA manufactures and delivers a unique combination of
rehabilitation, replacement and installation equipment and consumables for
the underground construction market. Besides being a full solutions provider
in rehabilitation and replacement, HammerHead also offers unmatched field
support and project consultation to its customers worldwide. HammerHead
products are proudly made in the U.S.A. and sold and serviced in more than
63 countries. For more information visit www.hammerheadtrenchless.com;
800.331.6653. *
18 MAY 2022 | UCONonline.com
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Underground Construction - May 2022

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