Daim ntawv tais yog ua los ntawm cov ntaub so ntswg ua raw khoom, siv stainless hlau lim pwm, nyob rau hauv siab thiab lwm yam kev mob, lub pulp yog dewatered, lub fibers yog tsim, thiab cov khoom yuav tsum tau ua. Cov tais ntawv yog ib puag ncig zoo heev thiab cov khoom ntim tshiab, yog li cov khoom lag luam hauv ntau lub teb tau maj mam pib siv cov tais ntawv ua ntim. Daim ntawv ntim ntim feem ntau yuav tsum tau kho raws li koj tus kheej cov khoom. Tam sim no, kev siv cov ntawv ntim khoom ntim tuaj yeem pom nyob txhua qhov chaw hauv txhua qhov chaw ntawm lub neej. Yog li dab tsi yog cov txheej txheem tshwj xeeb ntawm kev tsim cov ntawv tais?
Dab tsi yog cov txheej txheem tshwj xeeb ntawm kev tsim cov ntawv tais:
1. Sib tsoo thiab ntaus
Muab cov ntawv pov tseg lossis straw coj mus muag lub rooj tsavxwm rau hauv hydraulic pulper thiab tawg rau hauv cov ntaub so ntswg dua. Cov khoom ntim khoom lag luam feem ntau siv rau hauv kev tsim cov kab rov tav hydraulic pulpers, thiab cov pulp concentration thaum tawg yog 5% -8%. Nws qhov zoo tsuas yog cuam tshuam cov ntawv fiber ntau, tsis muaj kev txiav, kev ua haujlwm siab tawg, lub sijhawm luv luv, kev siv hluav taws xob tsawg, cov qauv yooj yim, me me hneev taw, thiab tuaj yeem kho cov ntawv pov tseg nrog ntau dua dopants thiab hlau impurities. Lub pulverized pulp poob rau hauv lub tank cia, kho qhov tsim nyog concentration, thiab twj tso kua mis mus rau ib tug sib sib zog nqus beater los yog ib tug nruam refiner los yog ib tug refiner rau ntaus. Lub pulp kuj tuaj yeem raug crushed raws li kev xav tau ntau lawm. Tom qab lub siab -concentration tu tshuab, fiber ntau deconstruction tshuab, thiab ob-disc refiner, slag tshem tawm, deconstruction, thiab ntaus raug ua, thiab cov slurry ntaus raug tso tawm mus rau hauv lub tank los yog slurry tis tank rau siv. Lub degradation℃ntawm kev ntaus yog feem ntau 28 degrees -35 degrees.
2. Ntxoov ntxoo
Nyob rau hauv tus txheej txheem ntawm kev ntaus, ntau cov ntaub ntawv raw tuaj yeem muab ntau ntxiv rau hauv lub tank slurry raws li tus qauv slurry piv, thiab cov slurry tuaj yeem raug cais tawm thiab me me ntawm cov khoom siv ntxiv tuaj yeem ntxiv. Yog hais tias tus neeg sawv cev sizing ntxiv los ua kom cov kua permeability tsis kam ntawm daim ntawv molded khoom, tus neeg sawv cev sizing siv feem ntau yog rosin, paraffin wax latex lossis rosin paraffin wax kua nplaum. Nws yog ib qho tsim nyog hais tias cov khoom tom qab ntxiv cov tshuaj ntxiv no tsis tuaj yeem hu ua daim ntawv tais. Rau cov khoom uas tsis yog- nplaum nplaum nplaum, ntxiv 3% rosin kua nplaum sib npaug rau qee qhov ntawm cov fiber ntau ntawm cov tawv nqaij; rau kev sib txuas cov khoom siv khib nyiab, ntxiv 1.5% -2% rosin kua nplaum.
Nws kuj tseem tuaj yeem ntxiv talc hmoov ua cov muab tub lim rau hauv cov ntaub so ntswg kom ua tiav cov slurry ntau dua. Kev tshem tawm aqueous uas muaj 20% -30% talc muab tub lim tuaj yeem ua tiav hauv cov khoom sib tov ntawm kev kub ceev rau 6 feeb, tom qab ntawd diluted nrog dej, tom qab ntawd ntxiv cov tshuaj ntxiv, thiab ua tiav rau lwm 5 feeb los ua ib qho kev tshem tawm, thiab tom qab ntawd ntxiv rau cov slurry, qee cov ntawv phaj manufacturers kuj ntxiv ib qho me me ntawm cov roj repellent, repellent tus neeg sawv cev rau cov roj repellent. slurry. Nyob rau hauv cov txheej txheem pulping, qhov tsim nyog ntawm cov dej dawb los yog dej huv yuav tsum tau ntxiv los kho cov pulp concentration rau 1% -2% rau kev tsim cov khoom pwm.
3. Ntawv molding
Kev sib sau yog txheej txheem tseem ceeb hauv kev tsim cov ntawv tais. Nws plays lub luag hauj lwm txiav txim siab nyob rau hauv qhov zoo, breakage tus nqi, ntau lawm zog noj thiab ntau lawm efficiency ntawm daim ntawv molded khoom. Raws li txoj cai lub cev qhuav dej ntawm cov cuab yeej tsim, muaj ob txoj hauv kev tseem ceeb rau kev tsim cov ntawv tais:
Lub tshuab nqus tsev txoj kev yog lub tshuab nqus tsev vacuum. Muab cov pwm pwm tso rau hauv cov kua txiv hmab txiv ntoo nrog cov concentration ntawm li 1%, thiab nqus cov pwm kab noj hniav kom tsim lub siab tsis zoo, kom cov fibers hauv cov ntaub so ntswg sib npaug ntawm cov pwm tsim pwm ntawm cov pwm pwm, uas tau muab tshem tawm thaum lub tshuab nqus tsev nqus dej ntau. Thaum cov khoom ncav cuag qhov xav tau tuab, cov molding tuag raug tshem tawm ntawm slurry rau extrusion thiab lub cev qhuav dej kom txog rau thaum cov dej noo ntawm cov khoom yog 75% -80%, thiab tom qab ntawd compressed cua nkag mus rau hauv pwm kab noj hniav kom tso tawm cov ntawv ntub dej. Txoj kev no muaj kev ua haujlwm siab ntau lawm thiab cov khoom sib xws. Haum rau ua nyias qhov chaw uas tsis sib sib zog nqus, xws li cov ntawv tais rau ntim cov qe, txiv hmab txiv ntoo, cutlery, tais thawv, thiab lwm yam.
Txoj kev hydroforming siv hydraulic siab los ua kom muaj zog extrusion siab dua los ntawm hydraulic tsav txhua yam khoom siv. Nws lub hauv paus ntsiab lus ua haujlwm yog txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau pwm. Los ntawm lub hauv qab ntawm lub net qauv. Cov khoom raug tshem tawm ntawm pwm los ntawm lub tshuab nqus tsev nqus thiab xa mus rau cov txheej txheem tom ntej. Vim lub siab molding siab, txoj kev no yog tsim los tsim cov khoom lag luam ntiav nrog lub hauv paus hnyav thiab ntau dua.
