PROTECTIVE SCREEN FORMING METHOD Russian patent published in 2005 - IPC

FIELD: protection of ground and underground water pollution with toxic chemical substances, particularly forming antifiltering screens around waste disposal areas, dumps, for producing water reservoirs, building vessel coatings, mud reservoirs and store facilities for oil products and building materials.

SUBSTANCE: method involves forming water-proofing mixture including polyethylene waste; laying thereof on store facility base and heat treating the mixture under temperature of mixture or upper store facility layer melting. The mixture includes waste polyethylene in amount of 70-99% and polypropylene in amount of 1-30%.

EFFECT: improved ecological safety and manufacturability, reduced cost for antifiltering screen forming, increased strength, reliability and extended trouble-free service life.