Lub hauv paus ntsiab lus ntawm lub qhov rooj zoo nkauj zaj duab xis mas suav nrog nws cov khoom muaj pes tsawg leeg, cov txheej txheem ntau lawm thiab cov nyhuv thov.
Cov khoom siv tseem ceeb ntawm lub qhov rooj zoo nkauj zaj duab xis yog cov molecular polymer (PVC), uas yog ua los ntawm kev ntxiv ntau yam ntxiv, calendering thiab compounding cov txheej txheem. Tshwj xeeb, cov txheej txheem ntau lawm ntawm kev dai yeeb yaj kiab suav nrog cov kauj ruam hauv qab no:
Xaiv cov khoom xaiv: Xaiv cov khoom siv siab) raws li cov khoom siv hauv paus, thiab ntxiv ntau yam ntxiv ntxiv los txhim kho nws cov kev ua tau zoo.
Calendending txheej txheem: Calender cov khoom PVC los ntawm calender ua daim duab uas yuav tsum tau ua.
Compounding cov txheej txheem: compound tus calendered zaj duab xis nrog ntau cov khoom siv los ntawm ntoo (xws li ntoo, phaj yas, txhuas phaj, hlau phaj, hlau phaj, ua kom muaj ntau lub hom phiaj zoo nkauj khoom zoo nkauj.
Cov khoom zoo nkauj no tau siv nyob rau hauv ntau thaj chaw, suav nrog kho kom zoo nkauj hauv tsev, kev kho kom zoo sab hauv, nkoj thiab tsheb ciav hlau, thiab lwm yam.
