Nyob rau hauv xyoo tas los no, cov tuam txhab ntawv thiab cov neeg siv tau them nyiaj ntau thiab ntau dua rau cov ntim ntawm cov ntawv, vim tias ntim muaj feem cuam tshuam loj rau cov nqi thiab kev ua haujlwm ntawm cov khoom.High bulk density txhais tau hais tias nyob rau tib lub thickness, lub hauv paus luj yuav txo tau thiab tus nqi ntawm fiber ntau siv yuav raug txo, thiaj li mus cuag lub hom phiaj ntawm kev txuag nqi;Lub peev xwm loj tuaj yeem ua rau kom cov ntawv nruj, tso cai rau cov neeg tshaj tawm cov ntawv khaws cov ntawv ua tiav nrog cov nplooj ntawv tsawg dua tuaj yeem ua rau kom cov ntawv opacity, printability thiab txo cov to ntawm cov luam ntawv number case.Yog li ntawd, Takamatsu yog qhov tseem ceeb heev rau kev tswj cov nqi ntawm cov ntawv, cov khoom ua tau zoo thiab cov khoom muaj nqis ntxiv.
Dab tsi yog qhov ntim siab?Qhov no yog ib qho tseem ceeb Performance index ntawm daim ntawv, uas yog, qhov piv ntawm lub hauv paus luj rau thickness.Qhov ntim nruab nrab yog qhov ntom ntawm daim ntawv, uas yog, qhov loj ntawm qhov porosity ntawm daim ntawv.
Lub ntsiab tseem ceeb cuam tshuam rau lub ntim ntawm daim ntawv suav nrog cov ntawv fiber ntau raw khoom, hom pulp, kev ua haujlwm ntaus, muab tub lim, tshuaj, nias, ziab, calendering, thiab lwm yam.
Cov fiber ntau morphology ntawm papermaking fiber ntau raw khoom muaj ib qho tseem ceeb cuam tshuam rau qhov ntau ntom ntawm daim ntawv.Thicker fibers muaj cov hws ntau dua thiab ntau dua cov ntom ntom, tab sis kuj tseem muaj kev sib raug zoo heev nrog cov kev sib raug zoo heev nrog cov txheej txheem papermaking hauv cov txheej txheem papermaking.Thaum kawg nws nyob ntawm seb cov fibers puas tawg thiab deformed ntau npaum li cas.Yog li ntawd, fibers nrog ib tug me me txoj kab uas hla thiab ib tug tuab phab ntsa yog ib qho nyuaj, tsis yooj yim crushed, thiab yooj yim tsim high-density ntawv.
Hom pulp kuj muaj kev cuam tshuam zoo rau lub ntim ntawm daim ntawv.Feem ntau hais lus, siab yield pulp> thermomechanical pulp> kraft pulp> khib nyiab.Cov ntaub ntawv sib txawv muaj qhov sib txawv hauv tib lub pulp, hardwood> softwood.Lub siab bulkiness ntawm high-yield pulp yog unmatched los ntawm lwm yam pulps, yog li high-yield pulp yog dav siv los hloov ib nrab bleached kraft hardwood pulp nyob rau hauv high-qib ntawv.Kev xaiv thiab qhov sib piv ntawm cov hom pulp yog tus yuam sij rau kev siv tshuab ua cov ntawv xoob xoob tam sim no.Ntxiv cov kua txiv hmab txiv ntoo los txhim kho qhov ntom ntom ntawm daim ntawv tam sim no yog txoj kev siv tau zoo tshaj plaws los ntawm cov ntawv zeb.
Volume yog ib qho tseem ceeb ntawm daim ntawv.High bulk density paper tuaj yeem tswj qhov tsim nyog nruj, txo cov fiber ntau noj, txuag cov nqi pulp thiab txhim kho qhov ntom ntom.Txoj kev siv tau tshaj plaws tam sim no suav nrog kev sib ntxiv ntawm cov kua txiv hmab txiv ntoo siab, kev xaiv pulp thiab cov txheej txheem txheej txheem.Kev ua kom zoo dua qub thiab txhim kho cov khoom siv ntxiv tshiab kuj yog ib qho kev tshawb fawb tseem ceeb.
Post lub sij hawm: Sep-14-2022