Dab tsi yog qhov xav tau rau cov ntaub ntawv luam tawm ntawm lub tshuab ntawv khob tsis siv neeg? Raws li txoj cai hauv tebchaws, cov khob ntawv pov tseg" tsis tuaj yeem ua ke nrog cov tshuaj fluorescent whitening agent&". Cov khob ntawv pov tseg tau muab faib ua khob dej txias thiab khob haus dej kub raws li lawv lub hom phiaj. Thaum siv tsis raug lossis siv tsis raug, nws yuav cuam tshuam rau kev noj qab haus huv ntawm lub cev. Cov khoom siv raw rau txheej txheej dej tsis huv ntawm lub khob ntawv pov tseg yog polyethylene. Cov khob ntawv tsis zoo yog ua los ntawm polyethylene rov ua dua tshiab, uas yuav tsim ntau yam tshuaj phem hauv cov txheej txheem ua thiab tsim khoom. Lub khob ntawv yog txheej nrog txheej txheej polyethylene dej pov thawj zaj duab xis sab hauv kom ua tiav cov dej pov thawj.
Cov khob ntawm daim ntawv khob txias yuav tsum tau ntub los yog siv quav ciab kom ua tiav cov dej tsis zoo. Tom qab cov dej kub tshaj 62 degrees, kev ruaj khov ntawm cov ciab tsis muaj zog thiab cov khob ntawv ua mos. Ntawm lawv, cov tshuaj muaj peev xwm ua rau mob qog noj ntshav yuav nkag los ntawm tib neeg lub cev nrog rau dej. Cov khob ntawm cov dej haus kub yog cov yeeb yaj kiab polyethylene tshwj xeeb tau pom zoo los ntawm lub tebchaws, uas muaj cua sov tiv taus zoo thiab tsis muaj tshuaj lom.
Ib qho ntxiv, kuj tseem muaj cov txheej txheem tshwj xeeb rau cov tuab thiab cov dej permeability ntawm cov khob ntawv pov tseg. Cov hauv qab thiab ob sab ntawm lub khob dej yuav tsum tsis txhob muaj dej nkag los lossis nkag tau, thiab daim ntawv zoo yuav tsum tsis txhob mos dhau.
