Ivyiyumviro vya PP (imirongo ya polypropylene), igikoresho gisanzwe c’ubuhinga bwa none, gikoreshwa cane mu kwubaka, gukora imodoka, no mu bikorwa vyo mu nzu kubera ubushobozi bwiza cane bwo gutera, uburemere buke, inkomezi nyinshi, n’ugukora neza. Ariko rero, imiterere yabo y’ivy’ubuhinga bigira ico bikoze ku buryo butaziguye ku bijanye n’ugutwara abantu n’ibintu be n’ibiciro, bikaba bisaba ko umuntu yitwararika neza imiterere y’umubiri, ibisabwa vyo gupfunyika, no kurongora ivy’ugutwara abantu n’ibintu.
Ku bijanye n’imiterere y’umubiri, imirongo ya PP ifise uburemere buke (nk’ibice 0.9-0.91 g/cm3) ariko birakomeye cane, kandi ugushikama kwavyo kw’ingero birashikirwa cane n’ubushuhe. Naho zitanga ingaruka nziza ku bushuhe bwo mu cumba (20-30℃), zica zicika intege ku bushuhe buke (hasi 0℃), bikaba bisaba ko umuntu akingirwa kwinyiganza cane canke ingaruka mu gihe co gutwara. Ikindi kandi, imiterere ya PP ifise ahantu heza cane kandi ikaba ari n’agaciro gatoyi k’ugushikana, bikaba bituma umuntu ashobora gunyerera iyo arushe, bisaba ko acunga amabati canke imigozi.
Gupakira ni ikintu gihambaye cane kugira ngo umuntu ashobore kumenya neza ivy’imirongo ya PP. Ivyerekeye umuntu ku giti ciwe mu bisanzwe bizingirwa n’ubukonje- impapuro, igipfukisho c’ibibumbano, canke film ya PE, hanyuma igashirwako amasandugu y’ibiti, amapaleti, canke amakarito y’imigenzo kugira ngo ntihagire uguhinduka canke uguhinduka kw’umubiri bitewe n’ugukomera n’ubukonje mu gihe c’ugutwara. Ivyuma birebire (nk’akarorero, metero 6) bikwiye gupakirwa mu bice canke bikingirwa n’ibikoresho bishobora guhinduka kugira ngo ntihagire ukumena kubera ukunyiganyiga kw’imodoka mu gihe c’ugutwara.
Ku bijanye n’ubuhinga bwa none, ama vans ashobora gukoreshwa kugira ngo abone ko umuyaga ugenda neza kandi ntuhumane inkungugu. Ku bijanye n’ugutwara abantu ku rugero rurerure- ubuhinga bwo gutwara ibintu, gutwara ibikoresho canke gutwara abantu n’ibintu ni vyiza, hakoreshejwe amapaleti agereranywa kugira ngo umuntu ashobore gushiramwo neza no gukuraho ubushobozi bwo gushiramwo. Ni ngombwa kumenya ko naho imiterere ya PP atari - Ibintu vyiza, bishobora kurekura ibintu bihinduka mu bushuhe bwinshi. Mu gihe c'ugutwara abantu n'ibintu mu ci, bikwiye kurindwa umuco w'izuba, kandi ubushuhe bw'ikinyabiziga burasabwa ko buguma munsi ya degre 40 .
Mu ncamake, uburongozi bw’imirongo y’imirongo y’ivy’ubuhinga bwa PP butegerezwa kwitwararika ibiranga ivyo bintu. Biciye mu gupfunyika kwa siyansi, ubushuhe- uburyo bwo gutwara abantu, n’ugukoresha uburyo bwo gukoresha, ubutungane bw’ibicuruzwa burashobora kugabanywa, ibiharuro vy’imyanda birashobora kugabanywa, kandi ubushobozi bwo gutanga imyanda muri rusangi burashobora gutera imbere.
