MATERIALS | WATERPROOF MEMBRANES
High output Amut of Italy recently sold a special line for geomembranes to China-based Jingmen Keshun – part of the CKS Group, which is involved in the production and distribution of waterproof coating, bitumen membranes, adhesives and any other chemical products for building and infrastructure. The new line produces waterproof membranes
in TPO at outputs up to 2,200kg/h – equivalent to around 7 million sq m annually. The maximum width is 2,000mm. The TPO granules and mineral filler powders are directly extruded through in-line processing.
Amut says the line produces three-layer rein- Amut’s
geomembrane line extrudes TPO at outputs up to
2,200kg/h
While many pipe samples are tested under similar conditions, the researchers said there was a need to test film in this way – to determine the performance of film-based products such as geomembranes. In the experiment, PE samples of 45-60 microns in thickness – with an initial molecular weight of 169K – were exposed to chlorinated water for up to 1,000 hours. Molecular weight loss as a function of time was obtained. “An extensive set of mechanical data as a function of molecular weight is required to develop a model for stress cracking,” the researchers told Antec delegates. “Hence, it was important to verify that this combination of oxidative conditions and specimen material/thickness can lead to significant loss of molecular weight for a relatively short exposure time.”
forced membrane with a single calender system. The configuration can be with two or three layers with inner reinforcement in glass fibre or polyester scrim. It can also insert a non-woven reinforcement for the lower layer of the membrane. The extrusion unit includes two co-rotating
screw extruders for the inner and lower layer –90mm in size, with an L/D ratio of 40 and an output of 1,000kg/h each. There is also a single screw extruder for the upper layer, which is 75mm with an L/D ratio of 40 and an output of 500kg/h. The line also includes an advanced thickness gauge system and a special winder to wind up in-line rolls of 30m length.
CLICK ON THE LINKS FOR MORE INFORMATION: �
www.gseworld.com �
www.solmax.com �
www.colloids.co.uk �
https://twin-cities.umn.edu �
www.amutgroup.com
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