1. Sib tsoo thiab ntaus
Muab cov ntawv pov tseg lossis cov nyom-zoo li cov ntaub ntawv luam tawm mus rau hauv hydraulic pulper thiab ua kom nws tawg dua rau hauv cov tawv nqaij. Cov khoom ntim khoom lag luam feem ntau yog siv los tsim cov kab rov tav hydraulic pulpers, thiab cov pulp concentration thaum tawg yog 5% -8%. Nws qhov zoo tsuas yog ua lub luag haujlwm hauv dispersing 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 ua ntau dua dopants thiab hlau impurities khib nyiab. Lub crushed pulp ntog mus rau hauv lub tank cia, kho qhov tsim nyog concentration, thiab twj tso kua mis mus rau ib tug intermittent beater los yog ib tug tas mus li refiner los yog refiner rau ntaus, los yog lub crushed pulp yog crushed raws li kev xav tau ntau lawm. Tom qab lub siab -concentration cleaner, fiber ntau deconsolidator thiab ob -disc refiner, de-slagging, deconstructing thiab ntaus raug ua, thiab cov slurry npaj tau tawm mus rau lub tank cia lossis slurry tis tank rau standby. Lub degradation℃ntawm kev ntaus yog feem ntau 28 degrees -35 degrees.
2. Npaj slurry
Nyob rau hauv tus txheej txheem ntawm kev ntaus, ntau yam ntawm raw cov ntaub ntawv muaj peev xwm yuav quantitatively ntxiv rau lub slurry tank raws li tus tsim slurry piv, thiab cov slurry yuav loj thiab ib tug me me ntawm cov functional additives yuav muab ntxiv. Yog hais tias tus neeg sawv cev sizing yog ntxiv los ua kom cov kua nkag mus rau 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 tsis tuaj yeem hu ua ib puag ncig tus phooj ywg daim ntawv txhawb nqa tom qab ntxiv cov tshuaj ntxiv no. Rau cov khoom uas tsis yog- khi cov ntaub ntawv pov tseg, ntxiv rosin kua nplaum sib npaug rau 3% ntawm qhov tsis muaj fiber ntau ntawm cov tawv nqaij; Rau cov khoom siv khib nyiab rau cov ntawv cog lus, 1.5% -2% rosin kua nplaum yuav tsum tau ntxiv. talcum hmoov kuj tuaj yeem muab ntxiv rau hauv cov tawv nqaij ua cov muab tub lim kom ua tiav qhov khaws cia ntau dua ntawm cov slurry. Ib qho aqueous ncua kev kawm ntawv uas muaj 20% -30% ntawm talc muab tub lim tuaj yeem kho hauv lub tshuab tov khoom ntawm kev kub ceev rau 6 feeb, thiab tom qab ntawd diluted nrog dej thiab ntxiv nrog tshuaj pab. Nws raug kho rau lwm 5 feeb los ua ib qho kev ncua, uas yog ntxiv rau slurry. Qee cov tuam txhab lag luam kuj tau ntxiv cov roj pleev me me, cov tshuaj tiv thaiv dej, tus neeg saib xyuas lub zog ntub dej thiab kev tuav pov hwm rau slurry. Nyob rau hauv cov txheej txheem pulping, ib qho tsim nyog ntawm cov dej dawb los yog dej huv yuav tsum tau ntxiv los kho cov pulp loading concentration rau 1% -2% rau kev tsim cov khoom pwm.
3. Ntawv molding
Kev sib sau yog txheej txheem tseem ceeb hauv cov txheej txheem tsim cov ntawv tais, thiab nws ua lub luag haujlwm txiav txim siab hauv qhov zoo, tawg tus nqi, kev siv zog ntau lawm, thiab kev ua haujlwm ntawm cov ntawv molded khoom. Raws li lub hauv paus ntsiab lus ntawm lub cev qhuav dej ntawm kev tsim cov cuab yeej, muaj peb txoj hauv kev tseem ceeb rau cov tais ntawv: lub tshuab nqus tsev txoj kev thiab txoj kev hydroforming.
(1) Lub tshuab nqus tsev txoj kev yog tsim los ntawm lub tshuab nqus tsev nqus pom. Cov pwm tsim tau muab tso rau hauv cov kua nplaum uas muaj cov ntsiab lus ntawm li 1%, thiab cov kab noj hniav ntawm cov pwm yog nqus los ua qhov tsis zoo, thiab cov fibers hauv cov ntaub so ntswg yog sib npaug hauv qhov sib sau ntawm cov pwm ntawm cov pwm, cov dej noo ntau yog muab tshem tawm thaum lub tshuab nqus tsev nqus. Thaum lub thickness yuav tsum tau mus txog, lub molding tuag raug tshem tawm los ntawm slurry rau extrusion thiab lub cev qhuav dej kom txog rau thaum cov dej ntsiab lus ntawm ib feem yog 75% -80%, thiab ces compressed cua yog kis mus rau hauv cov kab noj hniav ntawm cov pwm mus rau demold daim ntawv ntub dej pwm. Txoj kev no muaj kev ua haujlwm siab ntau lawm thiab cov tuab tuab ntawm cov khoom. Nws yog qhov tsim nyog rau kev ua nyias qhov tsis sib sib zog nqus, xws li cov ntawv tais rau ntim cov qe, txiv hmab txiv ntoo, tais diav, tais tais, thiab lwm yam.
(2) Cov txheej txheem hydroforming siv hydraulic siab los ua kom siab dua extrusion los ntawm hydraulic tsav txhua yam khoom siv. Its working principle is to inject a quantitative amount of pulp into the molding cavity, and the upper molding die is squeezed downward under the action of hydraulic pressure, so that the pulp is molded on the mesh mold in the molding cavity, and water is discharged from the lower end of the mesh mold. Cov khoom raug tshem tawm ntawm pwm los ntawm lub tshuab nqus tsev adsorption thiab xa mus rau cov txheej txheem tom ntej. Vim lub siab molding siab, txoj kev no yog tsim rau zus tau tej cov yias ntiav cov khoom uas hnyav lub hauv paus hnyav thiab ntau dua ntom.
