Product Spotlight: CIPP ‘Cold Cure’ UV System Touted for Fast, High-Density Lining

Product Spotlight: CIPP ‘Cold Cure’ UV System Touted for Fast, High-Density Lining

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Light curing technology is a game-changer for CIPP lining contractors. Not only does it cut installation times dramatically (from several hours to just minutes), a virtually unlimited pot life and the ability to wet-out liners offsite ensures that technicians are not racing the clock to get the lining material in place before it cures.

In developing the NuCure Cold Cure UV system, the NuFlow Technologies engineering team calculated the specific requirements needed to cure three-layer fiberglass material. According to Grant Whittle, technical director for NuFlow Technologies, optical power density was measured as a function of different voltages applied to the LED strips, and differential scanning calorimetry determined the percentage of liner cured as a function of irradiance. This resulted in a precise calculation of the micro-watts per square centimeter required to ensure complete irradiance and a full and dense cure along the length of the liner.

“It is imperative that the resin and the wavelength of the light be precisely calibrated to ensure a full and dense cure,” Whittle says. “The research and development that went into NuCure Cold Cure UV has resulted in an extremely high density of cure, which not only means no uncured resin left in the pipe, but also means it can be used in high-temperature applications.”

When exposure to light controls the cure, the variable site conditions have far less influence and crews have to make fewer site-specific method adjustments, so light curing results in a much more consistent cure across installations. The result is a high-quality end product that meets specifications and gives the long-term performance planned.

The NuCure resin/light wavelength calibration results in a more controlled reaction, with a low peak exotherm and a short exotherm duration, resulting in minimal excess heat and a true “cold cure.” Cold cure is energy efficient, but just as important, doesn’t require additional active cooling techniques or equipment. According to Whittle, the ease of use of the system, along with its efficiency, has made plenty of fans among CIPP installers.

“The feedback has been really positive, particularly in the areas of ease of use and productivity,” he says. “The ability to push/pull in place more liners per day is huge for return on investment.” 866-430-2134;


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