Meltblown Nonwoven: Cov khoom siv ua haujlwm tsim los ntawm Microfibers

Nyob rau hauv cov tsev neeg nonwovens, thaum Spunbond nonwovens muaj npe nrov rau lawv lub zog thiab kev ruaj ntseg, Meltblown nonwovens txawv lawv tus kheej los ntawm ultra- fibers zoo, ntom qauv, thiab superior filtration thiab barrier zog.
 

Los ntawm cov khaubncaws sab nraud povtseg ntawm lub ntsej muag lub ntsej muag mus rau huab cua lim xov xwm, cov khoom tiv thaiv kev kho mob, thiab cov khoom siv tu cev, cov khoom siv hluav taws xob meltblown nonwovens ua lub luag haujlwm tseem ceeb hauv ntau yam kev lag luam. Txawm hais tias nws zoo nkaus li tsuas yog txheej txheej hnyav, nws cov qauv sab hauv yog tsim los ntawm lub network loj ntawm microfibers. Qhov tshwj xeeb fiber ntau architecture endows meltblown nonwovens nrog lawv cov yam ntxwv kev ua tau zoo.

 

Meltblown Nonwoven yog dab tsi?

Meltblown nonwoven yog cov ntaub nonwoven uas tsim los ntawm cov txheej txheem meltblown. Nws cov khoom siv tseem ceeb yog feem ntau yog cov thermoplastic polymer, xws li Polypropylene (PP). Thaum lub sij hawm tsim khoom, cov polymer yog rhuab thiab melted, ces extruded los ntawm tshwj xeeb spinnerets. Tsav los ntawm siab - cua kub tshaj tawm, cov molten polymer yog ncab mus rau hauv cov fibers zoo heev. Cov fibers no tsis tu ncua dispersed thiab nteg los ntawm airflow, thaum kawg tsim ib lub web nonwoven muaj li ntawm microfibers. Yooj yim muab, cov molten resin yog "tshuab" rau hauv ultra- fibers zoo, uas tom qab ntawd tsim lub vev xaib -li no lub npe "meltblown."

Meltblown Nonwoven Manufactured li cas?

Thaum cov txheej txheem meltblown yuav zoo li yooj yim, nws xav tau kev tswj xyuas meej ntawm cov khoom siv, qhov kub thiab txias, airflow, thiab cov khoom raw khoom.

01. Polymer MeltingPolymer pellets yog thawj zaug pub rau hauv extruder system. Nyob rau hauv tshav kub, lub polymer maj mam yaj mus rau hauv ib tug viscos kua. Qhov kub, viscosity, thiab ntws lub xeev ntawm cov yaj ncaj qha cuam tshuam rau kev tsim fiber ntau tom qab.

02. Melt ExtrusionLub molten polymer yog xa los ntawm cov ntsia hlau extruder rau hauv lub taub hau meltblown tuag. Lub taub hau tuag yog nruab nrog ntau qhov zoo spinneret qhov. Raws li cov yaj yog extruded los ntawm cov qhov, nws tsim thawj kwj nyias.

03. Siab -Ceev cua kub StretchingQhov no yog cov kauj ruam tseem ceeb ntawm cov txheej txheem meltblown. Siab - cua kub ceev cua dav hlau tawm los ntawm ob sab ntawm lub taub hau tuag ncab cov molten polymer kwj ntawm qhov siab tshaj plaws. Tsav los ntawm airflow, cov yaj yog txuas mus ntxiv thinner, thaum kawg tsim ib tug loj npaum li cas ntawm microfibers. Piv nrog rau cov filaments tas li tsim nyob rau hauv cov txheej txheem spunbond, meltblown fibers yog qhov zoo dua.

04. Txias thiab Web TsimCov fibers stretched maj mam txias thiab randomly dispersed los ntawm airflow. Tom qab ntawd lawv muab tso rau hauv ib lub tshuab txais (xws li, txoj siv conveyor lossis nruas) los tsim ib lub web fiber ntau.

05. Tshaj tawm -Kev kho mobNyob ntawm daim ntawv thov, meltblown nonwovens tuaj yeem ua tiav ntxiv, xws li kev kho hluav taws xob, lamination, slitting, thiab rewinding. Kev kho hluav taws xob yog qhov tseem ceeb tshwj xeeb rau qee cov ntaub ntawv pom, vim nws tseem ceeb heev
txhim kho cov khoom muaj peev xwm los ntes cov khoom zoo

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Vim li cas Meltblown Nonwoven Exhibit Superior Filtration Performance?

Qhov no yog ib qho ntawm cov yam ntxwv tseem ceeb tshaj plaws ntawm meltblown nonwovens. Nws lub peev xwm pom tau los ntawm cov qauv microfiber, cov qauv pore ntawm lub vev xaib, thiab cov teebmeem electrostatic. Cov fibers zoo heev intertwine los tsim ib tug heev complex fibers network. Thaum huab cua lossis lwm yam xov xwm dhau los ntawm cov khoom siv, cov khoom raug tshem tawm raug ntes los ntawm cov txheej txheem xws li kev cuam tshuam cov tshuab, inertial impaction, thiab diffusion. Rau cov ntaub ntawv meltblown uas tau ua tiav kev kho hluav taws xob, electrostatic attraction ntxiv txhim khu kev ntes cov khoom zoo. Yog li ntawd, meltblown nonwovens tau dhau los ua cov khoom tseem ceeb hauv ntau cov khoom pom.

Cov yam ntxwv tseem ceeb ntawm Meltblown Nonwovens

01. Ultra-Fine Fibers:Cov txheej txheem meltblown tsim tshwj xeeb zoo fibers. Cov fibers zoo dua, ntau dua cov fibers rau ib chav tsev qhov hnyav thiab qhov nyuaj ntawm fiber ntau network. Qhov no yog lub hauv paus tseem ceeb rau kev ua haujlwm siab - pom cov khoom meltblown.02. Pom zoo:Vim yog cov fibers zoo thiab cov qauv hauv lub vev xaib, meltblown nonwovens yog qhov tsim nyog rau kev siv huab cua thiab kua lim. Txawm li cas los xij, kev ua haujlwm pom tseeb kuj yog nyob ntawm fiber ntau txoj kab uas hla, qhov hnyav hauv paus, pore qauv, kev kho electrostatic, thiab cov qauv ntsuas.03. Lub teeb:Meltblown nonwovens can form a relatively dense fiber network even at low basis weights, enabling lightweight design while meeting specific performance requirements.04. Cov Khoom Zoo Tshaj Plaws:Lub network complex tsim los ntawm cov fibers zoo muab kev tiv thaiv zoo tiv thaiv qee cov khoom thiab cov kua dej, ua cov ntaub ntawv meltblown dav siv hauv cov qauv uas yuav tsum muaj kev cuam tshuam kev ua haujlwm.05. Lub zog muaj zog:Qhov zoo ntawm meltblown nonwovens feem ntau yog nyob rau hauv microfibers, pom, thiab barrier zog. Piv rau spunbond nonwovens, lawv lub zog txhua yam yog qhov txwv thaum siv ib leeg. Yog li ntawd, nyob rau hauv ntau yam khoom, lub meltblown txheej tsis yog siv ntawm nws tus kheej tab sis yog laminated nrog spunbond txheej, tsim.
Composite nonwovens xws li SMS thiab SMMS.

Cov ntawv thov tseem ceeb

Filtration Media:Kev lim dej yog ib qho kev siv ntau tshaj plaws, suav nrog huab cua, kev lag luam, thiab kua pom. Cov ntawv thov sib txawv muaj qhov sib txawv ntawm txoj kab uas hla fiber ntau, qhov hnyav hauv paus, pore qauv, thiab kev ua haujlwm electrostatic.

Mask Filtration Layers:Meltblown nonwovens ua cov khoom siv tseem ceeb hauv ntau lub ntsej muag lub ntsej muag. Tshwj xeeb tshaj yog thaum electret- kho, lawv siv ob qho tib si kev pom thiab electrostatic adsorption los txhim kho particle capture.

Kev kho mob tiv thaiv iav:Qee cov khoom siv tiv thaiv kev kho mob siv cov khoom siv meltblown lossis cov khoom tsis sib xyaw uas muaj cov txheej txheem meltblown kom tau raws li cov txheej txheem tiv thaiv tshwj xeeb.

Cov khoom siv tu cev:Hauv kev tu cev, cov khoom siv meltblown tuaj yeem siv rau kev pom tshwj xeeb, thaiv, lossis cov txheej txheem ua haujlwm sib xyaw. Thaum laminated nrog cov ntaub ntawv spunbond, lawv tsim ntau - txheej txheej uas sib npaug zog thiab kev ua haujlwm.

Roj Absorbents:Cov qauv fiber ntau tsim los ntawm cov txheej txheem meltblown muaj thaj chaw loj tshwj xeeb, ua qee yam khoom siv meltblown
haum rau cov khoom siv roj, xws li cov khoom siv roj absorbent felts thiab pads.
 

Qhov sib txawv ntawm Meltblown thiab Spunbond Nonwovens

Txawm hais tias ob leeg koom nrog tsev neeg nonwovens, lawv cov txheej txheem tsim khoom thiab kev ua tau zoo sib txawv:

Ob leeg tsis nyob hauv kev sib tw. Qhov tseeb, ntau qhov siab -kev ua haujlwm tsis yog ua tiav cov txiaj ntsig zoo meej los ntawm kev sib xyaw ntawm ob txheej txheem no.

Vim li cas Meltblown Layer Indispensable hauv SMS?

Raws li tau hais dhau los, SMS=Spunbond + Meltblown + Spunbond, qhov nruab nrab "M" sawv cev rau txheej txheej meltblown. Ob txheej "S" txheej feem ntau muab lub zog thiab kev txhawb nqa, thaum nruab nrab "M" txheej txhim kho kev pom thiab thaiv kev ua haujlwm. Tsuas yog muab tso rau hauv SMS composites, cov txheej spunbond "muab cov qauv kev ncaj ncees," thaum lub meltblown txheej "ua raws li kev thaiv." Thaum cov khoom lag luam tiag tiag yog qhov nyuaj dua, qhov kev sib piv no pab kom nkag siab sai sai rau cov qauv ntawm SMS.

Kev Txhim Kho Yav Tom Ntej ntawm Meltblown Nonwovens

Nrog rau kev nce qib tsis tu ncua hauv kev pom, kev kho mob, kev tu cev, thiab cov khoom siv hauv kev lag luam, meltblown thev naus laus zis tseem tab tom hloov kho tas mus li:

Fiber ntau:Kev kho kom zoo ntxiv ntawm cov fibers pab tsim kom muaj kev nplua nuj thiab nyuaj fiber ntau network.

Ntau Precise Structure Control:Kev tswj xyuas meej txog qhov tsis xws li fiber ntau txoj kab uas hla, qhov hnyav hauv paus, thiab qhov porosity tso cai rau kev ua tau zoo raws li kev siv tshwj xeeb.

Multifunctionality:Cov ntaub ntawv meltblown yav tom ntej tuaj yeem txuas ntxiv ua haujlwm xws li tshuaj tua kab mob, adsorption, nplaim hluav taws, thiab conductivity, hloov mus rau hauv cov khoom siv tshwj xeeb.

Kev sib xyaw:Laminating meltblown nrog spunbond, ntoo pulp, thiab lwm yam kev ua haujlwm fibers yuav dhau los ua ib qho tseem ceeb ntawm txoj kev loj hlob. Kev sib xyaw cov ntaub ntawv sib txawv them nyiaj rau kev txwv kev ua haujlwm ntawm ib qho - cov khoom siv.

Xaus: Los ntawm Ib Leeg Microfiber mus rau Kev Ua Haujlwm Network

Qhov zoo tshaj plaws ntawm meltblown nonwovens tsis yog tsuas yog tias lawv "zoo li nyias," tab sis hais tias lawv tsim ib qho kev sib txuas ntawm microfiber ntau hauv cov khoom nyias nyias. Cov fibers zoo dua, ntau dua cov fibers rau ib chav tsev qhov hnyav, thiab qhov nyuaj ntawm cov qauv sab hauv. Qhov no ua rau meltblown nonwovens kom ua tiav ntau yam haujlwm, xws li kev pom thiab kev tiv thaiv kev tiv thaiv, thaum tseem tshuav. Tsis tas li ntawd, thaum laminated nrog cov ntaub ntawv zoo li spunbond, lawv tuaj yeem hloov kho los ntawm ib qho - cov ntaub ntawv ua haujlwm rau ntau - cov ntaub ntawv sib xyaw.