Qhov teeb tsa ntau ntawm kev ua haujlwm kub ntawm cov roj hmab extruder tshuab feem ntau yog nruab nrab 50 degree thiab 200 degree. Txawm li cas los xij, qhov ntsuas kub tshwj xeeb yuav sib txawv nyob ntawm seb hom khoom siv roj tais, cov kev xav tau ntawm cov qauv, thiab cov txheej txheem ntxiv.
Piv txwv li, rau cov roj hmab ntuj, lub cev kub feem ntau tau teeb tsa ntawm 50 degree}}} degree, thiab lub taub hau kub tau teev ntawm 80 degree}} degree. Rau cov khoom siv hluavtaws xws li styrene-butadiene roj hmab thiab ethylene propylene roj hmab, lub cev kub tej zaum yuav nyob nruab nrab ntawm 60 degree thiab 120 degree yuav nyob nruab nrab ntawm 100 degree thiab 140 degree. Thaum tsim qee cov khoom lag luam roj hmab tshwj xeeb, xws li cov khoom siv kub kub tiv thaiv roj hmab, qhov kub yuav tau teeb tsa ntau dua, nce mus txog 150 {}} degree.
