Cov txheej txheem tsim khoom ntawm kraft ntawv thiab nws daim ntawv thov hauv lub neej

Cov txheej txheem tsim cov tshuab luam ntawv thiab sau ntawv muaj ntau kauj ruam nyuaj uas ua rau muaj cov ntawv zoo siv rau ntau yam. Daim ntawv no yog ib feem tseem ceeb ntawm peb lub neej txhua hnub, nrhiav kev siv hauv kev kawm, kev sib txuas lus, thiab kev lag luam.

Cov txheej txheem tsim cov tshuab luam ntawv thiab sau ntawv pib nrog kev xaiv cov khoom siv raw, feem ntau yog ntoo pulp lossis ntawv rov ua dua tshiab. Cov khoom siv raw yog pulped thiab sib tov nrog dej los ua slurry, uas tom qab ntawd refined kom tshem tawm cov khoom tsis huv thiab txhim kho qhov zoo ntawm cov pulp. Cov pulp refined ces pub rau hauv lub tshuab ntawv, qhov twg nws dhau los ntawm ntau cov txheej txheem suav nrog kev tsim, nias, ziab, thiab txheej.

Hauv seem ua ntawv ntawm lub tshuab ua ntawv, cov pulp raug nthuav tawm rau ntawm ib lub xaim hlau uas txav tau, cia dej ntws tawm thiab cov fibers sib txuas ua ke los ua ib daim ntawv txuas ntxiv. Daim ntawv tom qab ntawd dhau los ntawm ntau lub yob nias kom tshem tawm cov dej ntau dhau thiab txhim kho nws qhov du thiab sib xws. Tom qab nias, daim ntawv raug ziab siv cov thooj voos kheej kheej uas muaj cua sov, kom ntseeg tau tias tshem tawm cov dej noo seem thiab txhim kho nws lub zog thiab cov khoom nto. Thaum kawg, daim ntawv yuav dhau los ntawm cov txheej txheem txheej txheem los txhim kho nws qhov kev luam tawm thiab qhov zoo li cas, nyob ntawm nws lub hom phiaj siv.

Cov ntawv thov ntawm kev luam ntawv thiab sau ntawv hauv lub neej txhua hnub yog ntau yam thiab tseem ceeb. Hauv kev kawm, nws yog siv rau cov phau ntawv kawm, phau ntawv ua haujlwm, thiab lwm yam khoom siv kawm. Hauv ntiaj teb kev lag luam, nws yog siv rau cov ntawv sau, daim npav ua lag luam, cov ntawv qhia, thiab lwm yam khoom siv sib txuas lus luam tawm. Tsis tas li ntawd, kev luam ntawv thiab sau ntawv yog siv rau cov ntawv xov xwm, cov ntawv xov xwm, cov ntawv qhia, thiab lwm yam khoom siv tshaj tawm, pab txhawb rau kev tshaj tawm cov ntaub ntawv thiab cov tswv yim.

Tsis tas li ntawd xwb, kev luam ntawv thiab sau ntawv kuj siv rau kev sib txuas lus tus kheej, xws li cov ntawv, daim npav tos txais, thiab cov ntawv caw. Nws qhov kev hloov pauv tau yooj yim thiab kev hloov pauv tau ua rau nws yog ib qho cuab yeej tseem ceeb rau kev qhia kev xav, kev sib qhia cov ntaub ntawv, thiab kev khaws cov ntaub ntawv.

Xaus lus, cov txheej txheem tsim cov tshuab luam ntawv thiab sau ntawv muaj ntau cov kauj ruam nyuaj uas ua rau muaj cov ntawv zoo siv rau kev kawm, kev sib txuas lus, thiab kev lag luam. Nws cov ntawv thov hauv lub neej txhua hnub yog ntau yam thiab tseem ceeb, pab txhawb rau kev tshaj tawm cov ntaub ntawv, kev qhia cov tswv yim, thiab kev khaws cia cov ntaub ntawv. Kev tsim thiab siv cov tshuab luam ntawv thiab sau ntawv ua lub luag haujlwm tseem ceeb hauv peb lub neej txhua hnub thiab yuav txuas ntxiv ua li ntawd yav tom ntej.