Cov khoom tseem ceeb ntawm cov ntaub ntawv tso quav tso quav yog cov nroj tsuag fiber ntau. Ntxiv rau peb lub ntsiab lus tseem ceeb ntawm cellulose, hemicellulose, thiab lignin, kuj tseem muaj lwm yam khoom siv nrog cov ntsiab lus qis, xws li resin, tshauv, thiab lwm yam khoom siv xws li sodium sulfate. Los ntawm kev xav ntawm papermaking, yuav tsum tau siv zog khaws cia cellulose thaum lub sij hawm ua cov ntaub so ntswg txhawm rau txhawm rau txhim kho cov txiaj ntsig ntawm cov ntaub so ntswg thiab daim ntawv lub zog.
Txhawm rau txhim kho cov ntaub so ntswg thiab daim ntawv lub zog, nws tseem yuav tsum tau khaws cov hemicellulose ntau npaum li sai tau thaum lub sijhawm ua cov pulp. Qhov ntau lignin muaj nyob rau hauv cov ntaub ntawv raw, qhov nyuaj dua nws yog ua kom cov pulp, thiab ntau cov tshuaj yuav tsum tau noj. Daim ntawv tso quav tso quav yog ib hom ntawv hauv tsev, nrog rau cov ntaub so ntswg, cov ntaub so ntswg, thiab lwm yam khoom siv ntawv. Daim ntawv tso quav tso quav feem ntau yog tsim los ntawm paj rwb pulp, ntoo pulp, straw pulp, thiab khib nyiab pulp. Cov khoom lag luam zoo yog tsim los ntawm cov ntoo nyoos ntoo, uas zoo ib yam li cov txheej txheem tsim cov ntawv tsis tu ncua.
Qhov tsuas yog yuav tsum tau ua kom nws nyias nyias thiab tsis yooj yim, nrog lub hom phiaj ntawm rotting thaum ntsib dej thiab ua tiav kev tiv thaiv ib puag ncig. Nyob rau hauv cov txheej txheem ntawm kev tsim cov ntawv hauv tsev nrog cov ntoo hauv paus ntoo, txhawm rau ua tiav nws cov softness zoo, cov chaw tsim khoom yuav ntxiv qee cov nqi ntawm cov ntoo luv luv ntoo fibers rau cov pulp, tab sis kev sib xyaw ntawm luv fibers nrog lwm cov fibers ntev tsis yog heev. muaj zog.