Kev tsim cov ntawv hauv paus siv cov ntawv pov tseg lossis cov ntoo ntoo ua cov ntaub ntawv raw, hloov lawv mus rau hauv cov ntawv yob los ntawm cov txheej txheem xws li pulping, purification, thiab daim ntawv tsim. Ib lub slitter nruab nrog sab sauv thiab sab hniav sib dhos txiav cov yob loj (6 meters dav) rau hauv cov yob me me (0.3-1.5 meters dav); Thaum lub sij hawm tus txheej txheem no, nro yog soj ntsuam nyob rau hauv tiag tiag -lub sij hawm ntawm lub siab sensors, thiab cov hniav sib txawv yog khaws cia nyob rau hauv ib tug ntau ntawm 0.02-0.05 mm.
Uncoated ntoo-dawb ntawv (offset paper) yog tsim los siv ntau-ply forming technology; Cov txheej txheem tseem ceeb siv cov ntawv sib xyaw ntawm BCTMP, NBKP, thiab LBKP, ua raws li qhov loj me thiab kev kho calendering.
Corrugated board ntau lawm pib nrog corrugating nruab nrab (cov ntawv hauv paus); Cov txheej txheem muaj xws li unwinding daim ntawv, preheating thiab siv cov nplaum, tsim ib tug wavy qauv ntawm corrugating rolls, thiab nias / khi cov khaubncaws sab nraud povtseg los tsim ib tug - ntsej muag los yog ob - ntsej muag corrugated board.
Kev tsim cov ntawv hauv paus rau aseptic kua ntim khoom noj muaj kev sib xyaw ntev thiab luv fibers, refining los hloov kho fiber ntau morphology, thiab ntxiv tshuaj auxiliaries xws li nto thiab sab hauv sizing agents.
Kev tsim cov ntawv hauv paus rau cov khoom siv ntaub so ntswg yuav tsum tswj qhov piv ntawm cov ntoo mos rau cov ntoo fibers (xws li 3: 7 txog 4: 6) thiab ntxiv sodium carboxymethyl cellulose (CMC) - ntawm 0.5% - 1.2% ntawm tag nrho cov huab hwm coj - los txhim kho cov dej solubility. Cov txheej txheem creping siv 45-degree lub kaum sab xis kws kho mob hniav, ua rau daim ntawv thickness peb npaug thiab boosting nws longitudinal elongation ntau tshaj yim npaug.