Imashini ibumba inshinge nigice cyingenzi cyimashini, ikoreshwa cyane cyane mugutanga, guhuza, gushonga, no gukanda ibikoresho bya plastiki bibisi. Imiterere n'imikorere byayo bigira ingaruka kuburyo butaziguye no gukora neza.
Umubiri wa screw ugizwe nigice cyo kugaburira, igice cyo guhunika, nigice cyo guhuza ibitsina. Igice cyo kugaburira gishinzwe gushyushya no gutanga ibikoresho bikomeye; igice cyo guhunika kigera gushonga, kuvanga, no guhumeka; igice cya homogenisation cyemeza uburinganire bwubushyuhe no gushikama. Ukurikije itandukaniro ryimiterere ya plastike, imigozi irashobora gushyirwa mubwoko butatu: ubwoko bwa gradient (bukwiranye nubushyuhe - ibikoresho byoroshye nka PVC), ubwoko butunguranye (bubereye polyolefine), nubwoko rusange -. Itandukaniro nyamukuru riri muburebure no gukata imbaraga zishushanyije igice cyo guhunika. Ibipimo byingenzi birimo diameter, igipimo cyerekezo, hamwe nigipimo cyo guhunika, bigomba guhuzwa nibintu bifatika kugirango bitezimbere ingaruka za plastike. Ibikoresho bikunze gukoreshwa ni hejuru - ubushyuhe no kwambara - ibikoresho birwanya nka 38CrMoAla alloy na tungsten karbide nikel - bishingiye ku mavuta. Mugihe cyo gukoresha, uburyo busanzwe bwo gushyushya no gusukura no kubungabunga buri gihe birakenewe kugirango wirinde kunyerera cyangwa kwangirika kwa mashini.
