Cov ntsiab lus tseem ceeb ntawm Daim Ntawv Ua Tshuab
Qhov ntev - chain paper machine yog cov khoom siv tseem ceeb rau kev tsim cov corrugated board thiab corrugated puag ntawv. Tag nrho cov txheej txheem suav nrog rau 6 qhov loj: pulp flow chamber, mesh section, pressing section, drying section, calendering section, and winding/rewind section. Kev sib koom ua haujlwm ntawm txhua tus txheej txheem ncaj qha txiav txim siab cov ntawv zoo, muaj peev xwm tsim tau, thiab cov nqi tsim khoom, ua rau nws yog cov txheej txheem tseem ceeb hauv kev lag luam papermaking.
Lub thawv ntawv pulp, raws li thawj txheej txheem tseem ceeb hauv lub tshuab ntawv, ua haujlwm feem ntau kom faib cov ntaub ntawv sib npaug thiab tsim kom muaj cov ntaub ntawv sib xws nrog kev tswj xyuas qhov dav thiab qhov nrawm nrawm. Nws cov qauv tsim thiab kev ua haujlwm ruaj khov ncaj qha txiav txim siab qhov kev faib tawm ntawm cov fibers thiab cov fillers, yog li ua kom lub hauv paus zoo ib yam thiab tag nrho cov khoom zoo ntawm daim ntawv.
Lub slurry nrog ib tug concentration ntawm 0.4% -1.0% yog sprayed mus rau lub mesh nto thiab maj mam dehydrated rau daim ntawv ntub dej nrog ib tug dryness ntawm 16% -20%. Lub mesh configuration, ua ke nrog lub pulp flow chamber, txiav txim siab qhov zoo ntawm daim ntawv tsim; ib qho kev tsim qauv zoo txo qis fiber ntau thiab muab tub lim poob thaum txo qis cov khoom pov tseg.
Thawj cov dej noo ntawm cov ntaub ntawv ntub dej tuaj yeem ncav cuag li 80%, ua rau nws yooj yim tawg thiab ua rau cov ntawv tsis zoo thaum qhuav ncaj qha. Cov ntu xovxwm siv cov tshuab compression los ua kom cov ntawv dryness mus rau 30% -50%, thaum tib lub sijhawm tshem tawm cov cim hauv lub vev xaib, txhim kho qhov smoothness thiab nruj, txhim kho daim ntawv lub zog, thiab txo qis kev siv hluav taws xob kom qhuav.
Lub tshuab ziab khaub ncaws muaj ntau qhov sib txawv ntawm lub tog raj kheej kom qhuav thiab sawv cev rau cov txheej txheem tseem ceeb nrog cov khoom siv hluav taws xob siab tshaj plaws thiab cov nqi khoom siv hauv lub tshuab ntawv. Nws heats thiab dries ntawv nplooj ntawv mus rau tus qauv noo noo cov ntsiab lus siv chav, optimizes lub cev lub zog ntawm daim ntawv, thiab ib txhij ua cov txheej txheem xws li sizing thiab dyeing, ua lub tseem ceeb tivthaiv kom ntseeg tau cov khoom ua raws cai thiab tswj cov nqi ntau lawm.
Lub calendering seem yog ntsia rau tom qab kawg ntawm chav tsev ziab thiab muaj ntau yam kev sib txhuam-tsav calender rollers. Tom qab calendering kev kho mob, daim ntawv qhia tau zoo heev gloss, smoothness, thiab ceev, nrog kho thickness variations kom ntseeg tau tias uniform thickness thiab ruaj khov kev ua tau zoo ntawm cov khoom kawg.
Lub tshuab ntawv winding yog lub luag haujlwm rau dov cov ntawv rau hauv cov ntawv yob, nrog rau cov tuab tuab, thiab muaj nyob rau hauv ncej- hom lossis hom cylindrical. Lub tshuab rewinding txheej txheem cov ntawv nyoos rau hauv cov ntawv ua tiav cov ntawv yob los ntawm kev tswj nruj thiab kev txiav ntev, ua tau raws li cov kev cai hauv qab xws li luam ntawv; nws qhov kev ua haujlwm tseem ceeb tsis suav nrog qhov dav, nrawm, thiab qhov siab tshaj plaws yob txoj kab uas hla.
