Definition - What does UV Curing mean?
UV curing refers to the process of curing cured-in-place pipe (CIPP) liner using ultraviolet light. Different types of fabrics are used in the CIPP industry, such as polyester fabric and glass fabric.
Polyester fabric has high surface tension and optimally absorbs resin. Glass fabric is preferred where curing is done using UV light. The process of installing the liner is the same as is done for heat and steam curing but the UV curing process requires special equipment, such as a light train and supporting equipment.
Trenchlesspedia explains UV Curing
UV curing is considered to give superior results than heat and steam curing for many reasons. The liner is manufactured in a manufacturing plant where consistent manufacturing quality is ensured.
UV cured CIPP is considered to be at least three times stronger than other available CIPP products and have a greater service life, up to 80 years. It is considered strong enough to hold as a viable pipe even if the outer host pipe has completely deteriorated.
The light train that does the curing also provides real-time video that enables installers to provide a good fit. It also encapsulates and locks the styrene into place during the curing process preventing its release into the air or groundwater.