Imipira ya polypropilene (PP) nigikoresho cyizewe kandi gihindagurika gifunga ibikoresho byabugenewe bitandukanye. Ikozwe mubintu birebire bya polypropilene, ibi bipfundikizo bitanga kashe ikomeye kandi irwanya imiti, byemeza ubusugire bwamazi cyangwa imiti.