Arkema launches new Kynar PVDF grade for drinking water systems

Arkema has added Kynar 740 E to its Kynar PVDF polymer range developed for drinking water systems. This grade aptly combines mechanical strength with fluidity, making it perfectly suited to the extrusion process. Kynar 740 E is especially suitable for the manufacture of multilayer pipes for the transport of drinking water. It has recently been granted a KTW certificate, a German approval for raw materials in contact with drinking water, added to its existing food compatibility certification at European level.
 
The main asset of Kynar for this application lies in its purity and the absence of additive during processing. Water supply pipes with a Kynar 740 E inner layer offer the following key properties: outstanding resistance to water treatment products throughout their lifetime, organoleptic inertness (no taste is passed to the water), and ability to delay the growth of bio-film, a thin layer of bacteria colonising the inner wall of pipes.
 
Kynar PVDF is already used today by water supply companies in France for over half the service connections linking up watermains to homes.