LDPE construction membranes
Polyethylene (PE) raw material
In the field of membranes, polyethylene (PE) is predominantly used in the form of LDPE and HDPE. LD (Low Density) is the more flexible, HD (High Density) the stiffer but also more durable material. Due to its flexibility and its processing benefits in the field of thin membranes, standard construction membranes are manufactured using LDPE. HDPE is more likely to be found in the field of synthetic sealing membranes.
Our construction membranes are predominantly made of LDPE. PE consists of the elements carbon and hydrogen. The chemical formula is C2H4.
- Resistance to cold between -30°C and -50°C
- Melting range between 95°C and 115°C
- Flash point: 340°C in compliance with ASTM D 2117
PE membranes are environmentally-friendly and groundwater-neutral. They are either stored in landfill sites or incinerated at incinerating plants. There they are of particular value due to their high energy content. PE membranes consist of the chemical elements carbon and hydrogen which, during controlled incineration, produce carbon dioxide and hydrogen.
Polyethylene also doesn't excrete any toxins during long-term storage or when deposited in landfill sites. Furthermore, there is no odour formation using any type of waste disposal method.
Polyethylene membranes are sometimes furnished with additional elements such as heat and UV-stabilisers in order to increase the service life of the membrane. The stabilisers used include 'Chimesarb' and 'Tinovin', both of which are innocuous and release hydrogen, carbon dioxide, carbons and nitrogen oxides during incineration. No toxic gases are produced.