Cov txheej txheem tseem ceeb hauv kev npaj cov ntawv coated yog txheej, tseem hu ua extrusion txheej. Cov txheej txheem tsoos siv cov resins xws li polyethylene (PE) ua cov khoom tseem ceeb. Txawm li cas los xij, nrog nce kev tiv thaiv ib puag ncig, thev naus laus zis ntawm kev npaj biodegradable coated ntawv siv bio-raws li lossis tag nrho biodegradable cov ntaub ntawv (xws li PLA, PHA, thiab PBAT) tau dhau los ua cov kev taw qhia tseem ceeb.
Txheej txheej yog txheej txheem uas cov khoom siv molten resin (xws li PE) raug muab pov rau hauv lub substrate (daim ntawv) los ntawm extruder, thiab tom qab ntawd nias thiab txias los ua cov khoom kawg. Nws cov txheej txheem tsim khoom feem ntau suav nrog kev npaj cov ntawv hauv paus, txheej txheem txheej txheem, kev kho kom qhuav, thiab winding lossis txiav. Cov txheej txheem txheej siv cov txheej txheej los yog cov tshuaj tsuag txheej kom sib npaug ntawm cov kua txheej rau ntawm daim ntawv. Qhov kub kom qhuav yog feem ntau nyob ib ncig ntawm 100 degree, thiab lub sijhawm yog li 30 feeb. Cov txheej txheem no yuav tsum tau nplaum tsawg dua, tsis muaj kuab paug ib puag ncig, thiab ua tau raws li cov qauv kev nyiam huv.
Txhawm rau daws cov teeb meem ntawm cov ntawv PE coated ib txwm ua nyuaj rau degrade thiab rov ua dua, biodegradable coated ntawv tau dhau los ua qhov kev tshawb fawb hotspot. Cov ntaub ntawv no yog tsim los siv bio-raws li lossis tag nrho biodegradable cov ntaub ntawv xws li PLA, PBAT, thiab PHA los ntawm txheej txheej lossis txheej txheem sib xyaw. Piv txwv li, Hengxin Lub Neej tau ua tiav ntau lawm ntawm PHA- cov khoom siv ntawv coated (xws li khob ntawv thiab lub thawv noj su), thiab nws cov khoom tau txais BPI daim ntawv pov thawj hauv tsev. Hais txog patented technologies, Zhejiang Ruiwei New Material Technology Co., Ltd. tau tshaj tawm "ib qho biodegradable, tag nrho bio-raws li daim ntawv coated haum rau tsev composting thiab nws txoj kev npaj," uas nws biodegradable zaj duab xis siv ib tug blend system ntawm PHBV thiab PBSA. Lwm txoj hauv kev los npaj cov ntaub ntawv biodegradable coated composite yog txheej txheej biodegradable cov ntaub nplaum ntawm cov ntawv hauv paus thiab cov yeeb yaj kiab biodegradable siv lub tshuab laminating, ua raws li kub nias thiab txias los ua peb- txheej txheej txheej nrog tag nrho cov txheeb ze biodegradability ntau dua lossis sib npaug li 90%.
