Raws li qhov sib txawv ua qhov tob, xyoob ntawv pulp tuaj yeem muab faib ua ntau pawg, feem ntau suav nrog Unbleached Pulp, Semi-bleached Pulp, Bleached Pulp thiab Refined Pulp, thiab lwm yam. Unbleached Pulp tseem hu ua unbleached pulp.
1. Unbleached Pulp
Unbleached xyoob ntawv Pulp, tseem hu ua unbleached pulp, yog hais txog cov pulp tau ncaj qha los ntawm xyoob los yog lwm yam nroj tsuag fiber ntau raw cov ntaub ntawv tom qab kev kho mob ua ntej los ntawm cov tshuaj los yog mechanical txoj kev, tsis muaj bleaching. Hom pulp no khaws cov xim ntuj ntawm cov khoom siv raw, feem ntau xws li daj daj mus rau xim av tsaus, thiab muaj cov feem ntau ntawm lignin thiab lwm yam tsis-cellulose Cheebtsam. Tus nqi tsim khoom ntawm cov xim ntuj xim yog qhov tsawg, thiab nws yog dav siv nyob rau hauv cov teb uas tsis xav tau siab whiteness ntawm daim ntawv, xws li cov ntawv ntim, cardboard, ib feem ntawm cov ntawv kab lis kev cai thiab lwm yam. Nws qhov zoo dua yog tswj xyuas cov yam ntxwv ntawm cov khoom siv raw, uas yog qhov tsim nyog rau kev siv cov peev txheej ruaj khov.
2. Semi-bleached Pulp
Semi-bleached xyoob ntawv Pulp yog ib hom ntawm cov ntaub ntawv nruab nrab ntawm cov ntaub so ntswg thiab cov bleached pulp. Nws tau dhau los ua cov txheej txheem bleaching ib nrab, tab sis cov degree ntawm bleaching tsis yog tag nrho raws li cov bleached pulp, yog li cov xim yog nyob nruab nrab ntawm tej yam ntuj tso xim thiab dawb huv, thiab tej zaum tseem muaj tej yam yellowish tone. Los ntawm kev tswj cov tshuaj bleaching thiab bleaching lub sij hawm thaum lub sij hawm zus tau tej cov semi-bleached pulp, nws yog ua tau los xyuas kom meej ib tug tej degree ntawm whiteness thaum tib lub sij hawm txo cov nqi ntau lawm thiab ib puag ncig. Cov ntaub ntawv no yog tsim rau qee lub sijhawm uas muaj qee qhov yuav tsum tau ua rau daim ntawv dawb tab sis tsis siab dhau, xws li qee hom ntawv sau ntawv, ntawv luam ntawv, thiab lwm yam.
3. Bleached Pulp
Bleached xyoob ntawv pulp yog bleached pulp, nws cov xim yog ze rau dawb huv, siab whiteness Performance index. Cov txheej txheem bleaching feem ntau yog siv cov txheej txheem tshuaj, xws li kev siv cov tshuaj chlorine, hypochlorite, chlorine dioxide lossis hydrogen peroxide thiab lwm yam tshuaj bleaching, txhawm rau tshem tawm lignin thiab lwm yam xim ntawm cov tawv nqaij. Bleached pulp muaj fiber ntau purity, zoo lub cev thiab tshuaj stability, thiab yog lub ntsiab raw khoom rau high-qib kab lis kev cai ntawv, tshwj xeeb ntawv thiab tsev neeg ntawv. Vim nws lub siab dawb thiab ua tau zoo heev, bleached pulp occupies ib qho tseem ceeb txoj hauj lwm nyob rau hauv daim ntawv kev lag luam.
4. Refined ntawv Pulp
Refined Pulp feem ntau yog hais txog cov ntaub so ntswg uas tau txais los ntawm cov ntaub so ntswg bleached, uas yog kho ntxiv los ntawm lub cev los yog tshuaj txoj kev los txhim kho cov purity thiab fiber ntau ntawm cov pulp. Cov txheej txheem, uas yuav suav nrog cov kauj ruam xws li kev sib tsoo zoo, kev tshuaj ntsuam xyuas thiab ntxuav, yog tsim los tshem tawm cov fibers zoo, impurities thiab tsis tiav cov tshuaj reacted los ntawm cov pulp thiab ua kom cov fibers dispersed thiab softer, yog li txhim kho cov smoothness, gloss thiab lub zog ntawm daim ntawv. Refined pulp yog tshwj xeeb tshaj yog haum rau kev tsim cov khoom muaj txiaj ntsig ntxiv, xws li cov ntawv luam ntawv qib siab, ntawv kos duab, ntawv coated, thiab lwm yam, uas muaj cov kev xav tau siab rau ntawv zoo, uniformity thiab luam ntawv adaptability.
Post lub sij hawm: Sep-15-2024
