Lub thawv ntim luam yeeb dawb zam (txhua lub thawv muaj 10 lub, txhua lub thawv muaj 7 pob)

Daim ntawv dawb yog ib hom ntawv tuab uas ruaj khov thiab hnyav heev. Vim tias qhov chaw tsis muaj xim, nws feem ntau hu ua daim ntawv dawb. Daim ntawv dawb hauv Suav teb muab faib ua peb qib A, B, thiab C. Qhov dawb ntawm qib A tsis tsawg dua 92%; qib B tsis tsawg dua 87%; qib C tsis tsawg dua 82%.
Cov khoom siv raw ntawm cov ntawv dawb yog 100% tshuaj bleached
Cov ntawv dawb rau cov ntawv luam yeeb yuav tsum muaj qhov tawv heev, tsis yooj yim tawg, du thiab dawb. Qhov yuav tsum tau ua ntawm daim ntawv yog tiaj tus, tsis muaj kab txaij, pob, qhov thiab pob, tsis yooj yim khoov thiab hloov pauv. Ib yam li cov ntawv luam yeeb feem ntau siv lub tshuab luam ntawv gravure ceev ceev los luam ntawv, yog li cov ntawv dawb yuav tsum muaj qhov ntsuas kev nruj siab. Kev tiv thaiv kev nruj kuj hu ua lub zog tensile lossis lub zog tensile, uas txhais tau tias qhov siab tshaj plaws uas daim ntawv tuaj yeem tiv taus thaum nws tawg, qhia hauv kN / m. Lub tshuab luam ntawv gravure ceev ceev kom rub cov ntawv yob, kev luam ntawv ceev ceev kom tiv taus qhov nruj loj, yog tias muaj qhov tshwm sim ntawm daim ntawv tawg ntau zaus, yuav ua rau lub sijhawm tsis ua haujlwm ntau zaus, txo qhov ua haujlwm, tab sis kuj ua rau daim ntawv poob ntau ntxiv.
Muaj ob hom ntawv dawb rau cov hnab luam yeeb, ib qho yog FBB (daim npav dawb daj), ib qho yog SBS (daim npav dawb), cov hnab luam yeeb siv FBB thiab SBS yog ib sab coated dawb cardboard, FBB muaj peb txheej ntawm pulp, txheej ntsej muag thiab hauv qab siv sulfate ntoo pulp, txheej plawv siv tshuaj lom neeg sib tsoo ntoo pulp. Sab pem hauv ntej (sab luam ntawv) yog txheej txheej, uas siv ob lossis peb squeegees, thaum sab nraub qaum tsis muaj txheej txheej. Txij li thaum txheej nruab nrab yog ua los ntawm tshuaj lom neeg thiab tshuab milled ntoo pulp, cov pulp muaj cov txiaj ntsig zoo rau ntoo (85% -90%), thiab tus nqi tsim khoom qis, yog li tus nqi ntawm FBB cardboard qis.
FBB pulp muaj cov fibers ntev dua thiab cov fibers me me thiab cov fiber bundles tsawg dua, yog li qhov tuab ntawm daim ntawv tiav zoo dua, thiab tib gram ntawm FBB yog tuab dua li SBS, uas feem ntau yog tsim los ntawm peb txheej ntawm pulp, txheej sab saud, txheej hauv paus thiab txheej hauv qab txhua tus siv bleached sulfate ntoo pulp. Sab pem hauv ntej (sab luam ntawv) yog txheej txheej, uas yog siv ob zaug lossis peb zaug nrog tib lub squeegee li FBB, thaum sab nraub qaum tsis muaj txheej txheej. Txij li thaum txheej hauv paus kuj yog ua los ntawm bleached sulfate pulp, qhov dawb yog siab dua, yog li nws hu ua dawb core dawb card. Tib lub sijhawm, cov pulp fibers yog me me thiab daim ntawv yog tighter, yog li SBS yog nyias dua li FBB ntawm tib gram hnyav. Piv txwv li, qhov tuab ntawm 230g / m2 FBB ntawm Hongta Renheng yog 320μm, thaum qhov tuab ntawm 230g / m2 SBS yog 295μm.