Kev hloov kho ntawm PVC yas pellets feem ntau yog los ntawm kev ntxiv ntau yam kev hloov kho additives, xws li: plasticizers, heat stabilizers, lubricants, processing modifiers, impact modifiers, fillers, anti-aging agents, colorants, etc. Qhov tsis du nto ntawm PVC yas pellets muaj feem xyuam rau qhov sib ntxiv ntawm ntau yam kev hloov kho thiab cov txheej txheem ua. Los ntawm kev txheeb xyuas ntawm ntau yam teeb meem, muaj kwv yees li hauv qab no yog vim li cas qhov saum npoo ntawm cov khoom tsis du: cov teeb meem kev ua haujlwm, impurities yog sib xyaw hauv kev ua cov PVC yas pellets, los yog cov yaj tsis yog plasticized hauv lub thoob, ua rau muaj kev cuam tshuam ntawm ntau yam teeb meem. cov khoom tsis sib xws. du; PVC yas pellets tsis qhuav ua ntej ua, kom cov khoom muaj cov dej noo, yog li muaj cov qauv dej ntawm qhov chaw tom qab ua cov khoom, uas yuav tsum tau ziab ua ntej ua; pwm teeb meem, xyuas seb qhov saum npoo ntawm cov pwm yog du, tshwj xeeb tshaj yog PVC Nws yog corrosive rau ib qho twg thiab yuav tsum tau ua haujlwm tsis tu ncua ntawm cov pwm; yog tias cov khoom lag luam teeb meem tau txiav txim siab los ua cov khoom lag luam teeb meem tom qab tsis suav nrog lwm yam teeb meem, nws tsis tuaj yeem daws tau los ntawm kev cog qoob loo. Nws yog ib qho tsim nyog yuav tsum tau hu rau cov chaw tsim khoom siv raw khoom los hloov kho lossis hloov cov qauv.
