Lithapo tsa motlakase tsa polyethylene tse kopantsoeng ka sefapano li na le matla a phahameng a mochini, ho hanyetsa ka matla khatello ea tikoloho, thepa e ntle ea motlakase, ho hanyetsa ka matla tlhaselong ea lik'hemik'hale. Ho feta moo, lihlahisoa tse bobebe le tse bonolo li bonolo ho sebelisoa