Melt tshuab non-woven npuag txheej txheem thiab cov yam ntxwv

Cov txheej txheem ntawm yaj tshuab tsis-woven ntaub

Cov txheej txheem ntawm yaj tshuab tsis-woven npuag: polymer pub - yaj extrusion - fiber ntau tsim - fiber ntau txias - web tsim - txhawb rau hauv ntaub.

Ob lub ntsiab lus yaj tshuab tshuab

Txij li thaum pib ntawm lub xyoo pua 21st, txoj kev loj hlob ntawm melt blown nonwoven technology tau ua sai sai thoob ntiaj teb.

Cov tuam txhab Hills thiab Nordson hauv Teb Chaws Asmeskas tau ua tiav ob lub ntsiab lus yaj tshuab ua ntej, suav nrog cov tub ntxhais tawv nqaij, sib npaug, daim duab peb sab thiab lwm yam. Cov fiber ntau fineness feem ntau yog ze li ntawm 2 µ, thiab tus naj npawb ntawm qhov nyob rau hauv lub yaj tshuab filament tivthaiv tuaj yeem ncav cuag 100 qhov ib nti, nrog rau tus nqi extrusion ntawm 0.5g / min rau ib lub qhov.

Tawv core hom:

Nws tuaj yeem ua rau cov ntaub tsis-woven zoo li mos thiab tuaj yeem ua rau hauv cov khoom sib txuam, eccentric, thiab cov khoom tsis zoo. Feem ntau, cov ntaub ntawv pheej yig yog siv los ua cov tub ntxhais, thaum cov khoom kim heev polymers nrog cov khoom tshwj xeeb lossis cov khoom yuav tsum tau siv los ua txheej txheej, xws li polypropylene rau cov tub ntxhais thiab nylon rau txheej txheej, ua rau cov fibers hygroscopic; Cov tub ntxhais yog ua los ntawm polypropylene, thiab txheej txheej txheej yog ua los ntawm cov tsis tshua muaj melting point polyethylene los yog hloov polypropylene, hloov polyester, thiab lwm yam uas tuaj yeem siv rau kev sib txuas. Rau carbon dub conductive fibers, cov tub ntxhais conductive yog qhwv hauv.

Parallel hom:

Nws tuaj yeem ua rau cov ntaub ntawv tsis-woven muaj qhov elasticity zoo, feem ntau yog ua los ntawm ob lub polymers sib txawv lossis tib lub polymer nrog cov viscosities sib txawv los tsim cov khoom sib npaug ntawm ob lub ntsiab lus. Los ntawm kev siv cov thermal shrinkage sib txawv ntawm cov polymers sib txawv, muab kauv curled fibers tuaj yeem ua. Piv txwv li, 3M Lub Tuam Txhab tau tsim cov ntaub ntawv tsis-woven ua los ntawm cov yaj tshuab PET / PP ob-txheej fibers, uas, vim qhov sib txawv shrinkage, tsim cov kauv curl thiab muab cov ntaub tsis-woven zoo elasticity.

Terminal hom:

Qhov no yog lwm hom polymer composite siv nyob rau hauv peb nplooj, ntoo khaub lig, thiab davhlau ya nyob twg hom. Thaum ua cov tshuaj tiv thaiv zoo li qub, cov khoom siv hluav taws xob, thiab cov khoom siv hluav taws xob, cov khoom siv hluav taws xob muaj peev xwm ua tau zoo nyob rau sab saum toj, uas tuaj yeem tsis tsuas yog ua kom ya raws, tab sis kuj ua hluav taws xob, tiv thaiv zoo li qub, thiab txuag nyiaj ntawm cov khoom siv polymer.

Micro Dan hom:

Txiv kab ntxwv petal zoo li tus, strip-puab tev cov khoom, los yog cov kob zoo li cov khoom siv tau. Siv ob lub polymers tsis sib xws los tev thiab ua ultrafine fiber ntau, txawm tias nanofiber webs. Piv txwv li, Kimberly Clark tau tsim ib hom tev tawm ob hom fiber ntau, uas siv cov yam ntxwv ntawm ob lub ntsiab lus fibers ua los ntawm ob lub polymers tsis sib xws uas tuaj yeem raug tshem tawm tag nrho hauv tsawg dua li ob zaug hauv dej kub los ua ultrafine fiber ntau webs. Rau hom kob, hiav txwv yuav tsum tau yaj kom tau txais cov kob zoo fiber ntau.

Hybrid hom:

Nws yog lub vev xaib fiber ntau ua los ntawm kev sib xyaw cov ntaub ntawv sib txawv, xim, fibers, cov duab sib dhos, thiab cov fibers sib npaug rau ntawm daim tawv nqaij, nrog rau ob qho tib si co spun thiab ob qho tib si fibers, muab cov fibers rau cov khoom xav tau. Piv nrog rau cov khoom siv hluav taws xob sib xyaw ua ke, cov khoom siv yaj no yog cov khoom siv hluav taws xob sib xyaw ua ke los yog cov khoom sib xyaw fiber ntau nonwoven npuag tuaj yeem txhim kho qhov kev ua tau zoo ntawm cov lim nruab nrab, thiab ua kom cov lim nruab nrab muaj kev tiv thaiv zoo li qub, kev siv hluav taws xob, noo noo absorbing, thiab txhim khu kev cuam tshuam cov khoom; Los yog txhim kho qhov adhesion, fluffiness, thiab breathability ntawm lub web fiber.

Ob qho tib si meltblown fibers tuaj yeem ntxiv qhov tsis txaus ntawm ib qho khoom siv polymer. Piv txwv li, polypropylene kuj tseem pheej yig, tab sis thaum siv cov khoom siv kho mob thiab kev noj qab haus huv, nws tsis tiv taus hluav taws xob. Yog li ntawd, polypropylene tuaj yeem siv los ua cov tub ntxhais, thiab cov khoom siv hluav taws xob uas tsim nyog tuaj yeem raug xaiv rau ntawm txheej txheej los qhwv nws, yog li daws qhov teeb meem ntawm hluav taws xob tiv thaiv. Qhov no tuaj yeem ua rau cov khoom lag luam tau txais txiaj ntsig zoo thaum ua tau raws li qhov yuav tsum tau ua, xws li cov khoom siv hluav taws xob thiab cov khoom siv hluav taws xob siv hauv cov pa hauv kev kho mob, uas tuaj yeem muab cov cua sov thiab cov av noo tsim nyog. Nws yog lub teeb yuag, pov tseg lossis yooj yim los tua kab mob, pheej yig, thiab tseem tuaj yeem ua cov lim dej ntxiv rau kev tshem tawm cov pa phem. Nws tuaj yeem tsim los ntawm ob qho tib si sib xyaw ua ke ob lub ntsiab lus yaj cov tshuab fiber ntau. Txais yuav cov tub ntxhais ntawm daim tawv nqaij hom ob-cov khoom siv fiber ntau, cov tub ntxhais yog ua los ntawm polypropylene thiab cov tawv nqaij txheej yog ua los ntawm nylon. Ob qho khoom siv fiber ntau tuaj yeem siv cov ntu ntu tsis tu ncua, xws li trilobites thiab multilobes, txhawm rau ua kom lawv thaj chaw. Nyob rau tib lub sijhawm, cov polymers uas tuaj yeem txhim kho kev ua haujlwm pom tuaj yeem siv rau ntawm lawv qhov chaw lossis cov hniav. Ob lub ntsiab fiber ntau mesh ntawm olefin los yog polyester yaj tshuab tuaj yeem ua rau hauv cov kua cylindrical thiab roj lim. Melt tshuab ob-cov khoom siv fiber ntau mesh kuj tuaj yeem siv rau cov tswv yim lim luam yeeb; Siv cov nyhuv suction los tsim high-end number case absorbing cores; Core suction rods rau khaws cia thiab infusion.

Kev loj hlob ntawm yaj tshuab nonwoven tshuab - yaj tshuab nanofibers

Yav dhau los, txoj kev loj hlob ntawm meltblown fibers yog raws li Exxon's patented technology, tab sis nyob rau hauv xyoo tas los no, ntau lub tuam txhab thoob ntiaj teb tau tawg los ntawm Exxon cov thev naus laus zis los tsim cov fibers zoo dua nanoscale.

Lub Tuam Txhab Hills tau tshawb fawb ntau ntawm nano meltblown fibers thiab tau hais tias tau mus txog theem ntawm kev lag luam. Lwm lub tuam txhab xws li Non-woven Technologies (NTI) kuj tau tsim cov txheej txheem thiab thev naus laus zis los ua cov nano meltblown fibers thiab tau txais patents.

Txhawm rau tig nanofibers, lub qhov nozzle yog qhov zoo dua li cov khoom siv hauv cov khoom siv yaj. NTI tuaj yeem siv cov nozzles me me li 0.0635 millimeters (63.5 microns) lossis 0.0025 ntiv tes, thiab cov qauv qauv ntawm cov spinneret tuaj yeem ua ke los ua ib qho dav dav ntawm ntau tshaj 3 meters. Txoj kab uas hla ntawm cov yaj cua tshuab spun nyob rau hauv txoj kev no yog kwv yees li 500 nanometers. Qhov nyias nyias ib txoj kab uas hla tuaj yeem ncav cuag 200 nanometers.

Cov khoom siv yaj tshuab rau spinning nanofibers muaj cov tshuaj tsuag me me, thiab yog tias tsis muaj kev ntsuas, cov txiaj ntsig yuav inevitably txo qis heev. Yog li ntawd, NTI tau nce tus naj npawb ntawm cov tshuaj tsuag, nrog rau txhua lub phaj tsuag muaj 3 lossis ntau dua kab ntawm cov tshuaj tsuag. Kev sib xyaw ua ke ntawm ntau chav tsev (nyob ntawm qhov dav) ua ke tuaj yeem ua rau muaj txiaj ntsig zoo thaum lub sij hawm spinning. Qhov teeb meem tiag tiag yog tias thaum siv 63.5 micron qhov, tus naj npawb ntawm qhov ntawm ib lub meter ntawm ib kab spinneret yog 2880. Yog tias peb kab siv, tus naj npawb ntawm qhov ib meter ntawm spinneret tuaj yeem ncav cuag 8640, uas yog sib npaug rau cov khoom zoo tib yam meltn fibers.

Vim yog tus nqi siab thiab muaj kev cuam tshuam rau kev tawg (kev tawg nyob rau hauv kev kub siab) ntawm nyias spinnerets nrog high-density qhov, ntau lub tuam txhab tau tsim cov cuab yeej tshiab los txhim kho lub zog ntawm spinnerets thiab tiv thaiv kom tsis txhob muaj kev kub ntxhov.

Tam sim no, nano meltblown fibers tuaj yeem siv los ua cov xov xwm pom, uas tuaj yeem txhim kho kev pom zoo. Kuj tseem muaj cov ntaub ntawv qhia tias vim cov fibers zoo dua hauv nanoscale meltblown nonwoven fabrics, sib dua thiab hnyav meltblown fabrics tuaj yeem siv ua ke nrog spunbond composites, uas tseem tuaj yeem tiv taus tib lub taub hau dej. Cov khoom lag luam SMS ua los ntawm lawv tuaj yeem txo qhov kev faib ua feem ntawm meltblown fibers.

Dongguan Liansheng Nonwoven Technology Co., Ltd.tau tsim nyob rau hauv lub Tsib Hlis 2020. Nws yog ib tug loj-scale non-woven npuag ntau lawm enterprise integrating kev tshawb fawb thiab kev loj hlob, ntau lawm, thiab muag khoom. Nws tuaj yeem tsim ntau yam xim ntawm PP spunbond non-woven fabrics nrog qhov dav ntawm tsawg dua 3.2 meters los ntawm 9 grams mus rau 300 grams.