Cov txheej txheem ntawm cov mos PVC thiab tawv PVC yog qhov sib txawv me ntsis, vim hais tias cov plasticizer feem ntau yog ntxiv rau cov khoom muag muag, yog li kneading plasticization yog ib qho tseem ceeb ntawm kev tsim cov yeeb nkab mos PVC. Nyob rau hauv cov txheej txheem mos PVC kneading, thiaj li yuav ua kom cov resin o thiab zoo meej los ntawm cov yas thiab ua rau cov ntaub ntawv kneading tusyees dispersed, yuav tsum tau them nyiaj mloog mus rau lub noj ib theem zuj zus. Thaum ntxiv ib qho ntawm cov muab tub lim, xws li CaCO3, cov resin thiab plasticizer yuav tsum tau tov ua ntej. Yog hais tias cov resin thiab muab tub lim yog tov ua ntej, thiab tom qab ntawd ntxiv plasticizer; Vim hais tias cov qauv ntawm cov muab tub lim feem ntau looser dua li cov resin, thaum ob qho tib si muaj nyob rau tib lub sijhawm, cov yas yas ua ntej nkag mus rau hauv cov khoom muab tub lim, thiab cov resin tsis tuaj yeem o tag nrho. Kneading feem ntau siv "Z" hom kneading tshuab, lub tsho cua sov, vapor siab yog li ntawm 0.24 ~ 0.39MPa. Knead 50 ~ 60 feeb. Tom qab kneading, nws yuav tsum tau tig ntau zaus los tiv thaiv cov resin los ntawm overheating hauv zos thiab decomposing nws tus kheej. Tom qab granulation, cov khoom kneading yog xa mus rau lub extruder kom extrude cov yeeb nkab. Qhov kub extrusion tuaj yeem qis dua qhov kub ntawm cov yeeb nkab PVC extruded.
