Cov kav dej PVC yog cov khoom siv hluavtaws ua los ntawm polyvinyl chloride resin, stabilizers, lubricants, thiab lwm yam, los ntawm kub - xovxwm extrusion. Raws li lub ntiaj teb thib ob feem ntau siv cov khoom siv hluavtaws, nws tau muab faib ua peb hom: PVC-U kav, PVC-M kav, thiab PVC-O kav dej, nrog rau qhov kub thiab txias ntawm 185 ~ 205 degree. Rigid PVC cov kav dej suav txog li ob - feem peb ntawm kev ua lag luam, muaj kev tiv thaiv corrosion thiab tus nqi qis, tsim nyog rau kev tso dej, dej, thiab kev thauj mus los ntawm cov tshuaj lom neeg. PVC-O cov kav dej, nrog rau lawv lub zog txhim kho los ntawm kev siv tshuab biaxial orientation, tau txais kev pom zoo hauv ntau lub tebchaws, suav nrog UK thiab Fabkis, thiab tau ua qauv raws li ISO/DIS 16422-2006 tus qauv.
Tuam Tshoj cov PVC yeeb nkab muaj peev xwm tau loj hlob sai txij li xyoo 1990, mus txog tag nrho cov peev txheej ntawm 2.8 lab tons hauv 2003. Xyoo 1995, Tebchaws Europe cov khoom siv PVC tau mus txog 5 lab tons, nrog kev noj ntawm 5.3 lab tons, uas lub teb chaws Yelemees kev tsim khoom thiab kev noj ob leeg mus txog 1.4 lab tons. PVC-U cov kav dej muaj zog vim lawv qhov kev tiv thaiv siab, tab sis ntsib kev sib tw los ntawm PE thiab PP-R kav dej thiab txwv tsis pub siv lead ua{10}} muaj cov stabilizers. Cov txheej txheem ntau lawm suav nrog kev sib tov, extrusion thiab lwm yam. Nws cov ntawv thov suav nrog kev tsim cov dej thiab cov dej ntws, cov khoom siv kho mob thiab ntim khoom noj. Nws kuj tseem tuaj yeem ua ke nrog cov pob zeb ua ke los tsim kev txhawb nqa txhua.
