Cov txheej txheem ntawm cov ntaub ntawv PVC yog qhov ua tau zoo heev, feem ntau muab faib ua rau 6 cov kauj ruam tseem ceeb: qauv tsim, cov khoom siv raw, pretreatment, sib tov thiab plasticizing, molding thiab ua, post- ua, thiab ntim. Hauv qab no, kuv yuav piav qhia cov ntsiab lus tseem ceeb ntawm txhua kauj ruam:
1. Formula Design: Qhov no yog thawj kauj ruam hauv kev tsim khoom. Raws li kev ua tau zoo ntawm cov khoom kawg (xws li lub zog, yoog raws, xim, thiab lwm yam), hom thiab feem ntau ntawm cov khoom siv raw, suav nrog PVC resin, plasticizers, stabilizers, fillers, thiab pigments, yog xam thiab xaiv.
2. Raw Material Pretreatment: Tag nrho cov khoom siv raw yuav tsum tau qhuav, tshwj xeeb tshaj yog cov fillers, uas yuav tsum tau qhuav kom huv si kom tsis txhob muaj cua npuas los ntawm kev cuam tshuam qhov zoo thaum lub sij hawm ua tom ntej. Tom qab ntawd, lawv raug ntsuas kom raug raws li cov qauv proportions.
3. Sib xyaw thiab Plasticizing: Qhov no yog cov kauj ruam tseem ceeb hauv kev tsim khoom. Cov khoom siv raw khoom hnyav tau muab tso rau hauv lub tshuab tov khoom thiab sib xyaw kom zoo hauv qhov cua sov thiab kev txiav txim siab, ua rau PVC resin rau plasticize thiab tsim ib lub xeev tsis sib xws, muab cov dej zoo rau cov molding tom ntej. Cov txheej txheem muaj xws li siab - sib tov kub ceev.
4. Moulding thiab Kev Ua: Cov khoom siv yas tau ua tiav rau hauv cov ntawv siv cov khoom sib txawv molding. Cov txheej txheem tseem ceeb muaj xws li:
Daim Ntawv Qhia Moulding: Cov khoom siv tau ua kom sov thiab calendered rau hauv daim ntawv txuas ntxiv siv lub calender.
Extrusion Moulding: Cov khoom yog melted thiab yas nyob rau hauv ib tug extruder, zoo li tus tuag, rub tawm, thiab ces calendered thiab txias los ua ib daim ntawv.
5. Post-kev ua tiav: Cov nplooj ntawv molded yuav tsum tau txiav, drilled, luam tawm, thiab kho qhov chaw (xws li embossing thiab lamination) kom ua tiav cov khoom kawg loj thiab qhov yuav tsum tau ua.
6. Ntim: Thaum kawg, cov khoom tiav raug txiav, sau npe, thiab ntim khoom kom yooj yim cia thiab thauj mus los.
