Kamore ea filthara ea poleiti ea PP le mochini oa mochini oa mochini oa filthara e na le lipoleiti tsa filthara tsa PP le liforeimi tsa PP tse hlophisitsoeng ka tatellano, tse amohelang mokhoa oa ho fepa sekhutlong se kaholimo.Mochine oa ho hatisa poleiti le foreimi o ka lokolloa feela ka ho hula poleiti ka letsoho.PP poleiti le foreime filthara mechine e sebelisoa bakeng sa thepa e nang le viscosity phahameng, 'me lesela filthara hangata hloekisoa kapa ho nkeloa sebaka.PP poleiti le foreime filthara motjhini o ka sebelisoa le pampiri filthara bakeng sa ho nepahala e phahameng filtration.