Txoj kev npaj ntau tshaj plaws rau cov pob zeb sib xyaw -zoo li cov xim pleev xim yog cov txheej txheem txau. Cov ntaub ntawv raw muaj xws li 60-65 qhov dej-raws li resin, 5-8 qhov chaw ua yeeb yaj kiab pab, thiab 30-35 qhov chaw ntxhia hmoov. Thaum lub sij hawm npaj, cov ntaub ntawv raw yog ntxiv rau lub tank sib tov raws li cov mis, nplawm thiab dispersed tusyees, ces lim. Cov sib tov yog txau rau hauv flakes siv lub tshuab txau thiab ziab thawj zaug ntawm 50℃-120 degree. Tom qab ntawd cov flakes qhuav yog muab tso rau hauv ib qho hnyav li tsib feeb, tom qab ntawd ziab thib ob ntawm 50℃-120 degree. Thaum kawg, lawv raug crushed rau hauv qhov tsis sib xws qhov loj me me uas siv lub pulverizer thiab tshuaj xyuas kom tau txais cov khoom tiav.
Lwm txoj kev npaj yog txoj kev scraping. Ib tug uniformly dispersed slurry yog tusyees scraped mus rau ib lub hauv paus txheej ntawm ib txoj kab ziab. Lub hauv paus txheej yog qhuav nyob rau hauv ib tug kub cua circulating qhov cub, ces tev tawm siv ib tug rotating txhuam roller. Cov txheej txheej qhuav yog crushed los ntawm crusher thiab tom qab ntawd tshuaj xyuas los ntawm lub sieve kom tau txais cov khoom tiav.
Ib qho piv txwv ntawm cov khoom siv raw rau kev npaj cov pob zeb sib xyaw los ntawm cov txheej txheem scraping suav nrog 25-40 qhov chaw ntawm siab-elasticity, qis-tack resin, 0.1-0.5 qhov chaw ntawm dispersant, 0.1-0.5 qhov chaw ntawm tus neeg sawv cev wetting, 0.502-upling tus neeg sawv cev, 0.02-0. 0.01-0.1 qhov chaw ntawm cov tshuaj tiv thaiv kab mob, 0.1-1 qhov chaw ntawm cov thickener, 50-60 qhov chaw ntawm cov hmoov muab tub lim, 0.1-2 qhov chaw ntawm cov xim xim dej, thiab 5-15 qhov chaw ntawm cov dej.
