Zam dawb teeb tso saib lub thawv luam yeeb ntim (txhua txheej ntawm 10 lub thawv, txhua lub thawv ntawm 7 pob)

Dawb cardboard yog ib hom ntawv tuab nrog firmness thiab hnyav hnyav. Vim tias qhov chaw tsis muaj xim, nws yog ib txwm hu ua dawb cardboard. Tuam Tshoj cov ntawv dawb yog muab faib ua peb qib A, B, C. Cov xim dawb ntawm qib A tsis tsawg dua 92%; Qib B tsis tsawg dua 87%; Qib C tsis tsawg dua 82%.
Cov khoom siv ntawm cov ntawv dawb yog 100% bleached tshuaj
Dawb cardboard rau cov ntawv luam yeeb yuav tsum muaj siab tawv, breakage kuj, smoothness thiab whiteness. Daim ntawv saum npoo yuav tsum yog tiaj tus, tsis muaj kab txaij, me ntsis, dents thiab pob, warping thiab deformation ntawm cov khoom. Raws li cov ntawv luam yeeb nrog dawb cardboard mas siv high-speed gravure tshuab luam ntawv los luam, yog li cov dawb cardboard nro index yuav tsum siab. Tension kuj tseem hu ua tensile lub zog los yog tensile lub zog, uas txhais tau hais tias qhov siab tshaj plaws nro uas daim ntawv tuaj yeem tiv taus thaum nws tawg, qhia hauv kN / m. High-speed gravure tshuab luam ntawv los rub cov ntawv yob, kev kub ceev luam ntawv los tiv thaiv qhov nro loj, yog tias qhov tshwm sim ntawm daim ntawv tawg feem ntau, yog khi ua rau tsis tu ncua, txo kev ua haujlwm, tab sis kuj nce cov ntawv poob.
Muaj ob hom ntawv dawb rau cov ntawv luam yeeb, ib qho yog FBB (dawb core white card), ib qho yog SBS (dawb core white card), cov ntawv luam yeeb siv FBB thiab SBS yog ib sab coated dawb cardboard, FBB muaj peb txheej. ntawm pulp, lub ntsej muag thiab hauv qab txheej siv sulfate ntoo pulp, cov tub ntxhais txheej siv tshuaj lom neeg sib tsoo ntoo pulp. Sab pem hauv ntej (sab luam ntawv) yog txheej txheej, uas yog siv nrog ob lossis peb squeegees, thaum sab nraub qaum tsis muaj txheej txheej. Txij li thaum nruab nrab txheej yog ua los ntawm cov tshuaj thiab mechanically milled ntoo pulp, lub pulp muaj ib tug siab yield rau ntoo (85% -90%), thiab cov nqi ntau lawm kuj tsawg, yog li tus nqi ntawm FBB cardboard yog kuj tsawg.
FBB pulp muaj fiber ntau ntev thiab tsawg dua cov fibers me me thiab fiber ntau, yog li cov tuab ntawm cov ntawv tiav yog qhov zoo dua, thiab tib lub gram ntawm FBB yog tuab dua li SBS, uas feem ntau yog tsim los ntawm peb txheej ntawm cov ntaub so ntswg, sab saum toj txheej. , core txheej thiab hauv qab txheej tag nrho 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 cov txheej txheem tseem yog ua los ntawm bleached sulfate pulp, lub whiteness yog siab dua, yog li nws yog hu ua dawb core white card. Nyob rau tib lub sijhawm, cov ntaub ntawv fiber ntau me me thiab daim ntawv yog nruj dua, yog li SBS yog thinner dua FBB ntawm tib gram hnyav. Piv txwv li, lub thickness ntawm 230g / m2 FBB ntawm Hongta Renheng yog 320μm, thaum lub thickness ntawm 230g / m2 SBS yog 295μm.