21. *** Tus txheej txheem ntawm kev ua ntawv yog dab tsi? ***
A: Cov txheej txheem papermaking muaj cov theem hauv qab no:
Pulping Tshooj: Cov Khoom Siv Raw → Ua noj thiab cov tshuaj sib cais muaj fulfing → kev ntxuav → Cia li siv rau kev siv tom qab
Seem phetermaking: pulping → refining → Cov Khoom Siv Hlau → Cov Khoom Siv Hlau → Dai Qhov Sendering → Cua Devering → Cua Rau Hauv Ntawv Rolls
Txheej Txheej: Txheej Txheej Base Ntawv → Txheej Tshuab → Kom Qhuav → Rewinding → Super Cantending
ZOV Seem: Rewinding → txiav rau hauv cov ntawv (lossis yob) → txheeb thiab ntim →
22. *** Dab tsi yog pulping? ***
A: pulping yog hais txog cov txheej txheem ntau lawm ntawm kev siv tshuaj, tshuab, lossis cov txheej txheem ua ke los cais cov nroj tsuag lossis cov tshuaj txhuam hniav.
23. *** Tshuaj Txhuam Txhuam Txhuam Hniav Yog Dab Tsi? ***
A: Tshuaj lom neeg pulping cuam tshuam nrog kev kho cov khoom siv roj raw nrog cov tshuaj lom neeg cov tshuaj muaj yees ntawm qhov kub thiab txias thiab siab. Cov txheej txheem no tshem tawm lignin, tsis muaj fiber ntau carbohydrates, cov rog, cov resins, thiab lwm yam, thiab lwm yam los cais cov fibers rau hauv pulp. Cov txheej txheem sawv cev feem ntau yog cov txheej txheem sulfate thiab cov txheej txheem sulfite.
24. *** Dab tsi yog neeg kho tshuab pulping? ***
A: Txhua yam pulping siv cov qauv siv tshuab los kho cov ntaub ntawv fiber ntau thiab tshem tawm cov hmoov av. Thaum ntoo yog siv los ua cov khoom siv raw, nws tau raug xa mus rau cov neeg kho tshuab ntoo pulp, tseem hu ua cov av hauv av. Txhua yam Pulp khaws cov nyiaj tseem ceeb ntawm lub lignin los ntawm cov khoom siv raw, ua rau muaj txiaj ntsig ntau dua piv rau tshuaj mem tes.
25. *** Lub hom phiaj ntawm cov tshuaj ntsuab yog dab tsi? ***
A: Culp tsim tawm los ntawm cov qauv tshuaj lossis cov tshuab tshuab yog hu ua cov xim pulp, uas muaj qee yam xim (feem ntau daj lossis xim av). Txhawm rau kom tau raws li kev siv cov ntawv siv yuav tsum tau, lub pulp yuav tsum tau ua kom dawb kom ua tiav ntau dua. Tshuaj dawb cuam tshuam nrog siv cov tshuaj ntxuav cov tshuaj pleev kom tsim nyog los ntawm oxidation, txo qis, lossis decomposize cov tshuaj chomophoric thaum khaws tau lignin.
26. *** Cov kev qhia dab tsi rau tshuaj dawb rau cov ntawv pov quav tshuaj? ***
A: Muaj ob txoj hauv kev rau tshuaj dawb rau cov ntshav:
1. Kev ua kom dawb cov tshuaj dawb: Siv cov tshuaj dawb oxidative kom rhuav tshem cov qauv ntawm Lignin, ua rau nws txhim kho kom zoo nkauj. Cov neeg sawv cev sib xws suav nrog Clr Tam sim no, oxidation tshuaj dawb, tab sis clecorine-muaj maj mam hloov los ntawm cov pa oxygen-raws li kev txhawj xeeb ib puag ncig.
2. Kev ua tshuaj dawb: siv txo cov tshuaj tiv thaiv cov tshuaj dawb los hloov cov qauv ntawm cov pawg ntawm cov neeg ua haujlwm hauv cov pawg neeg Chromophoric thiab decolorize lawv. Hom no tsis ua rau muaj fiber ntau thiab khaws cia cov yam ntxwv ntawm daim pulp qub, ua rau high-resulfet pulps xws li chemwood pulp thiab chemicalchhanical pulp. Cov tshuaj tiv thaiv ib txwm muaj xws li zinc disulfite, sodium trisulfate, hydrogen peroxide, thiab sodium peroxide. Txawm li cas los xij, kev txo qis-bleached pulp ua yeeb yam tsis zoo whiteness ruaj khov thiab tuaj yeem thim rov qab rau nws cov xim qub tom qab lub sijhawm huab cua.
Hauv kev xyaum, ntau theem tshuaj dawb (piv txwv li, peb-theem tshuaj dawb) feem ntau ua haujlwm kom ua tiav qhov xav tau qhov zoo kawg li.
27. *** Vim li cas thiaj ntaus tau tsim nyog? ***
A: Tom qab steaming, kev sib tsoo tshuab, kev ntxuav tes, tshuaj ntsuam, thiab tshuaj ntxhua, thiab tshuaj ntxhua khaub ncaws, purp, tsis tuaj yeem siv ncaj qha rau cov ntawv. Cov fibers nyob rau hauv lub pulp tsis muaj yooj, thiab kev sib txuas lus sib txuas lus ua tau zoo tsis zoo. Yog tias siv ncaj qha, daim ntawv ua tau xoob yuav xoob, ntxeem tau, ntxhib, thiab qis-zog, tsis muaj kev sib ntsib kev pab cuam. Kev ntaus cov qauv siv cov neeg siv tshuab los kho cov fibers hauv pulp, ua rau muaj kev txiav txim siab thiab kev txiav tawm. Tseem ceeb tshaj, cov fibers swell nyob rau hauv dej thaum lub sij hawm ntaus, txhim kho lawv cov cav tov thiab paub meej txog kev ua tiav ntawm cov ntsuas kev ua tau zoo.
28. *** Cov hau kev ntawm kev ua cov ntawv txheeb? ***
A: Daim ntawv txheej txheem tsim cov ntawv tuaj yeem raug categorized rau cov txheej txheem qhuav thiab ntub dej. Thawj qhov sib txawv ntawm cov txheej txheem siv hauv nruab nrab: Cov txheej txheem siv cua tshuab hluav taws xob, thiab cov txheej txheem ntub siv cov dej thiab yog tsim nyog rau cov nroj tsuag fiber ntau. Tam sim no, feem ntau cov ntawv yog tsim los siv cov txheej txheem ntub.
29. *** Dab tsi yog hom ntub dej tshuab? ***
A: Cov ntawv ntub daim ntawv tau cais rau hauv peb pawg raws li cov qauv ntawm cov ntawv sau: Ntev cov ntawv cav, thiab clip-net ntawv tshuab. Ntev ntev thiab puag ncig cov ntawv siv cov ntaub ntawv ib leeg ib leeg thaum muaj ob sab ntawm ob sab ntawm daim ntawv. Clip-Net Ntawv Machine Ua haujlwm ib txhij txau ob npaug rau kev dewatering ob npaug lossis tshem tawm cov kev sib txawv thiab kev txhim kho cov ntawv sib txawv.
30. *** Tus txheej txheem ntawm cov ntawv txheeb npe yog dab tsi? ***
A: Siv cov clever clip-net ntawv tshuab ua piv txwv, daim ntawv txheej txheem tsim qauv qauv yog raws li hauv qab no:
Daim ntawv tshuab muaj ob ntu: qhov ntub kawg thiab qhov kawg qhuav. Lub qhov ntub xaus suav nrog lub taub hau, cov ntu hlau, thiab nias ntu. Qhov kawg xaus suav nrog lub tshuab ziab khaub ncaws, calendering seem, thiab cov lus rov qab. Lim ntawv ua kom huv cov ntawv pov tseg yog txau uniformly thiab stably mus rau hauv nruab nrab ntawm ob nets (ntawm 45℃kaum sab xis) ntawm lub taub hau. Tom qab tshem tawm cov dej feem ntau los ntawm ob tog ntawm Nets, daim ntawv xa mus rau khau raj xovxwm rau nias thiab defuratering, txhim kho nruj thiab nto smoothness. Cov ntawv tau xaus yog xa mus rau ntu ziab rau cov chaw ua kom qhuav ntxiv uas siv lub zog hluav taws xob kom tau raws li cov ntsiab lus noo noo. Offset daim ntawv undergoes nto sizing nto nyob rau ntu qhuav los txhim kho lub zog sab saum toj thiab lwm yam khoom, ntsib kev luam ntawv siab nrawm. Los ntawm ntu ziab, daim ntawv saum npoo tseem ntxhib thiab tsis tsim nyog rau luam ntawv lossis sau ntawv. Txhawm rau txhim kho smoothness thiab kho cov ntaub tuab, daim ntawv yuav tsum dhau los ntawm ib lossis ntau tus hlau chais rau kev kho mob (feem ntau yog ib qho zoo thiab ib qho kev rov qab calender). Thaum kawg, cov ntawv tuaj yeem txiav mus rau hauv daim ntawv tiaj lossis dov rau hauv reels siv tshuab cua.