Inkqubo ye-hot-extrusion ibandakanya ukuvala intsimbi yentsimbi, ifudunyezwe kwiqondo lokushisa lokubumba, kwigumbi elibizwa ngokuba yi "container" enokufa kwelinye icala kunye nokuvulwa kwemilo yecandelo eligqityiweyo elifunwayo, kunye nokufaka uxinzelelo kwintsimbi. kwelinye icala lesikhongozeli. Isinyithi sinyanzeliswa ngokuvula, imilo eyithatha kwi-cross-section, njengoko isinyithi sihamba ngeplastiki phantsi kweengcinezelo ezinkulu ezisetyenzisiweyo.
Iintwalausebenzisa imathiriyeli ekrwada enobubanzi obukhulu kunemveliso egqityiweyo, indawo yokuphuma yesebe ikhutshwa kumbhobho ngelixa umzimba oyintloko ucinezelwa. Ubukhulu bodonga lwendawo yokuphuma bunokulungiswa njengoko kufuneka. Ifakwe kwii tee ezinobubanzi obukhulu, ubukhulu bodonga obunzima kunye / okanye izinto ezikhethekileyo ezinomngeni wokusebenza ezingenakwenziwa kusetyenziswa indlela yokuqhuma kwamanzi.