Filimi e hlahisoa ka mokhoa oa ho lahla, 'me lisebelisoa tse tala tsa polyethylene li kenngoa ka polasetiki' me li fetisoa ka mokhoa oa ho lahla theipi;Boitsebiso bona bo eketsa lisebelisoa tse tala tsa boleng bo phahameng ho mokhoa oa tlhahiso, 'me o sebelisa rolara ea ho bōpa ka mela e khethehileng ho etsa hore filimi e be le mekhoa.Kamora phetoho ea ts'ebetso, filimi e hlahisoang e na le boima ba 'mele bo tlase, maikutlo a bonolo a letsoho, lebelo le phahameng la ho tsitsisa, khatello e phahameng ea hydrostatic, elasticity e phahameng, botsoalle ba letlalo, ts'ebetso e phahameng ea lithibelo, khanyetso e phahameng ea seepage le litšobotsi tse ling, tse ka kopanang le thepa e fapaneng ea liatlana. ha e kenele metsi.