Inqubo ye-hot-extrusion ihlanganisa ukuvala ucezu lwensimbi, olushiswe ekushiseni okukhangayo, ekamelweni elibizwa ngokuthi "isitsha" esinomshini wokufa komunye umkhawulo ngokuvuleka kwesimo sesigaba esiphelile esidingekayo, kanye nokufaka ukucindezela ensimbi. ngakolunye uhlangothi lwesitsha. Insimbi iphoqeleka ngokuvula, ukuma kwayo okuthatha esigabeni esiphambanayo, njengoba insimbi igeleza ngepulasitiki ngaphansi kwezingcindezi ezinkulu ezisetshenzisiwe.
Teeskusetshenziswa impahla eluhlaza enobubanzi obukhulu kunomkhiqizo oqediwe, indawo yokukhipha igatsha ikhishwa epayipini kuyilapho umzimba omkhulu ucindezelwa. Ukuqina kodonga lwe-outlet nakho kungalungiswa njengoba kudingeka. Isetshenziswa kuma-tee anobubanzi obukhulu, ukujiya kodonga olusindayo kanye/noma izinto ezikhethekile ezinokusebenza okuyinselele ezingakwazi ukukhiqizwa kusetshenziswa indlela yokuqhuma kwamanzi.