Crease Protector Technology (CPT) - Brochure

In the element rolling process, it is industry-wide practice for the membrane leaf to be
“creased” or “folded” at the permeate water tube creating a membrane weak point that
requires further protection. Various methods have been used to reinforce this crease area in order to avoid premature membrane failures. A common practice is to apply glue in the “fold” on the surface of the membrane. However, a typical consequence of this method can be the development of step cracks resulting in failures. There is also the potential to cause
contamination in the concentrate. Additionally, the application of glue during the rolling
process can be problematic in manufacturing.