Coated ntawv yog cov khoom sib xyaw uas cov khoom yas tau coated rau saum npoo ntawm daim ntawv siv lub tshuab casting. Nws cov yam ntxwv tseem ceeb muaj xws li roj tsis kam, dej tsis kam (kuj), thiab kub sealability. Cov txheej txheem tsim khoom siv cov ntawv kraft ua cov ntawv hauv paus, thiab lub tshuab txheej yog siv los ua cov txheej txheem sib npaug kub -melt PE yas hais los ua ib zaj duab xis nyias. Tam sim no, feem ntau ntawm cov ntawv coated ntawm kev ua lag luam yog polyethylene (PE).
Nrog nce kev tiv thaiv ib puag ncig, kev lag luam tau hloov mus rau bio-cov ntaub ntawv biodegradable, uas siv cov khoom siv bio-raws li PLA thiab PBAT. Hauv xyoo 2024, kev lag luam tau ntxiv ib txoj haujlwm tshiab tshiab nrog lub peev xwm txhua xyoo ntawm 30,000 tons ntawm ib puag ncig tus phooj ywg biodegradable coated ntawv. Qee cov thev naus laus zis hloov PLA raw cov ntaub ntawv los txhim kho cov cua sov thiab brittleness ntawm polylactic acid (PLA). PHA coated ntawv cov khoom tau txais BPI hauv tsev composting ntawv pov thawj, thiab cov khoom no tsuas yog siv nyob rau hauv cov khoom siv pov tseg.
Tawm tsam qhov keeb kwm yav dhau los ntawm "dual{0}}carbon" lub tswv yim thiab lub ntiaj teb nthwv dej ntawm cov yas txwv tsis pub, EU txoj cai txwv txiav yas tau ua rau muaj kev nkag mus ntawm cov ntawv biodegradable coated. Xyoo 2025, lub teb chaws tus qauv rau "Laminated Paper thiab Paperboard for Food Packaging" tau pom zoo thiab tso tawm. Cov txheej txheem no siv rau cov khoom lag luam ua tiav tom qab lamination nrog PE, PP, PET, PBS, PLA, PHA, lossis PBAT cov yeeb yaj kiab, pab txhawb kev lag luam ntsuab thiab kev tsim kho kom ruaj khov. Xyoo 2026, cuaj lub chaw haujlwm, suav nrog Ministry of Commerce, koom ua ke tshaj tawm "Daim Ntawv Ceeb Toom Txog Kev Siv Green Consumption Promotion Action." "Daim ntawv-rau-Plastic 2.0" rov qab mus rau lub hauv paus ntsiab lus ntawm kev lag luam ncig.
Kev lag luam tau hloov pauv los ntawm kev hloov kho thev naus laus zis thiab kev lag luam nthuav dav, nrog qee lub tuam txhab tsim ua tiav cov saw hlau tsim muaj peev xwm npog cov khoom siv raw, lamination, molding, thiab luam ntawv.
