Cov khoom siv raw ntawm xyoob pulp ntawv tais tsuas yog li 1% ntawm cov ntaub ntawv fiber ntau. Tom qab cov ntawv ntub dej tau tsim, cov dej noo ntawm cov ntawv ntub dej yuav tsum tau txo mus rau 55% los ntawm kev siv tshuab rho tawm, thiab cov ntsiab lus noo ntawm daim ntawv tais yog 65% -75 tom qab tsim. %, nws yog ib qho nyuaj rau kev siv cov cuab yeej siv los txo cov ntsiab lus dej.
Nyob rau hauv cov txheej txheem ntau lawm ntawm daim ntawv tais, txog 3.5-4.5KG dej raug tshem tawm rau txhua kilogram ntawm xyoob pulp ntawv tais tiav cov khoom los ntawm cov txheej txheem ziab. Yog li ntawd, ziab yog ib qho tseem ceeb hauv kev tsim cov ntawv tais. Tus nqi tsim khoom ntawm cov txheej txheem kom qhuav occupies ib tug loj feem nyob rau hauv zus tau tej cov ntawv tais. Kev ua kom ziab kom qhuav ntawm daim ntawv tais yog qhov kev ntsuas tseem ceeb los ua kom cov khoom ua tau zoo ntawm cov tais ntawv.
Daim ntawv ntub dej nrog cov ntawv fiber ntau yog cov khoom ntxeem tau nrog cov qauv capillary sab hauv. Cov dej noo muaj nyob nruab nrab ntawm qhov chaw ntawm fiber ntau thiab qhov pores ntawm fiber ntau capillary. Cov ntaub ntawv txhawb nqa cov khoom siv rau lub ntim ntim khoom feem ntau xav tau cov khoom zoo dynamic cushioning, thiab cov dej noo hauv lawv tsis tuaj yeem raug tshem tawm los ntawm kev siv tshuab rho tawm, tab sis yuav tsum tau muab tshem tawm los ntawm kev ziab. Yog li ntawd, piv nrog cov txheej txheem kev ziab ntawm cov ntawv, lub zog ziab ntawm cov khoom siv molded yog qhov loj heev. Ntawm qhov tod tes, huab cua kub ua raws li lub tshav kub los muab lub zog rau evaporating noo noo, thiab ntawm qhov tod tes, nws ua raws li cov khoom siv noo noo kom tshem tawm cov evaporating noo noo.
Cov dej noo nyob rau hauv cov ntaub ntawv ntub dej yog nyob ntawm qhov sib txawv ntawm cov dej noo sab hauv thiab sab nraud. Qhov thiaj li-hu ua internal diffusion yog hais txog kev tsiv teb tsaws ntawm cov dej hauv cov ntawv ntub dej ntawm sab hauv mus rau sab nrauv; sab nraud diffusion yog hais txog cov dej noo uas tau nqa tawm ntawm qhov chaw tom qab evaporation. Txoj kev taug kev. Tus nqi dryness ntawm daim ntawv txhawb nqa yog nyob ntawm qhov ceev ntawm sab hauv thiab sab nraud diffusion ntawm cov dej noo thiab qhov sib npaug thiab kev sib koom ua ke ntawm ob. Cov txheej txheem tsim nyog yuav tsum tau tsim nyob ib ncig ntawm ob qho tib si saum toj no thiab lub cev qhuav dej ntawm cov khoom txhawb nqa ntawv.
Tom qab xyoob cov ntaub ntawv txhawb nqa khoom yog lub tshuab nqus tsev-adsorbed thiab tsim, muaj peb hom dej hauv cov ntaub ntawv ntub dej: cov dej khi, dej adsorbed thiab dej dawb. Lub hom phiaj ntawm ziab daim ntawv tais cov khoom yog kom tshem tawm cov dej noo dawb hauv nws, kom lub xyoob pulp ntawv tais tuaj yeem ncav cuag qhov sib npaug ntawm cov dej noo.
Daim ntawv phaj ziab tshuab yog tias thaum cov dej vapor siab ntawm qhov chaw ntawm daim ntawv ntub dej ntau dua li qhov siab ntawm ib nrab ntawm cov dej vapor hauv qhov ziab kom qhuav, cov dej noo ntawm qhov chaw ntub dej yuav tsis tu ncua vaporize thiab nkag mus rau hauv huab cua, thiab cov dej noo hauv qhov ntub dej yuav txuas ntxiv mus rau nws qhov chaw. Qhov ceev ntawm vaporization thiab diffusion sib txawv nrog qhov kub ntawm qhov nruab nrab, qhov dej ntawm qhov ntub dej, qhov tuab thiab qhov loj ntawm daim ntawv txhawb nqa, thiab lwm yam.
