Cov khoom pob tshab ntawm PVC yas granules yog tsim los ntawm PVC resin thiab additives. Cov additives yuav muab faib ua cua sov stabilizers, lubricants, processing modifiers, fillers, anti-aging agents, colorants, thiab lwm yam raws li lawv lub zog. Ua ntej tsim cov qauv ntawm cov khoom tseem ceeb ntawm PVC, peb yuav tsum paub qhov kev ua tau zoo ntawm PVC resin thiab ntau yam additives. Cov resin yuav tsum tau xaiv los ntawm polyvinyl chloride resin nrog rau qib ntawm polymerization ntawm 1200-1000; ib qho thermal stabilization system yuav tsum tau ntxiv. Xaiv raws li cov kev cai tshwj xeeb ntawm kev tsim khoom thiab kev ua haujlwm, them nyiaj tshwj xeeb rau kev sib koom ua ke thiab kev sib cav sib ceg ntawm cov cua sov stabilizers; ntxiv lubricating system kom tsim nyog. Lub tshuab lubricating tuaj yeem txo cov khoom siv thauj khoom ntawm kev ua haujlwm thiab ua kom cov khoom du, tab sis qhov ntau dhau yuav ua rau txo lub zog ntawm lub vuam lub kaum sab xis; qhov sib ntxiv ntawm kev hloov kho tuaj yeem txhim kho cov yas zoo thiab txhim kho cov tsos ntawm cov khoom; qhov sib ntxiv ntawm cov muab tub lim tuaj yeem txo tus nqi thiab ua kom cov rigidity ntawm qhov profile, tab sis nws tsis haum rau qhov kub thiab txias. Lub zog muaj kev cuam tshuam zoo, thiab lub teeb pom kev zoo calcium carbonate nrog ntau dua fineness yuav tsum tau xaiv. Tsim nyog ntxiv ntawm xiav thiab fluorescent whitening tus neeg sawv cev tuaj yeem txhim kho xim thiab luster ntawm qhov profile; nyob rau hauv cov qauv tsim, nws yuav tsum tau yooj yim kom ntau li ntau tau, tsis txhob ntxiv kua additives ntau npaum li sai tau, thiab raws li qhov yuav tsum tau ntawm cov txheej txheem sib tov, cov mis yog muab faib ua I nyob rau hauv batch raws li cov khoom noj ib ntus. Khoom No., No. II thiab No. III yog ntim nyias.
