Melt blown nzira inzira yekugadzira mafibhi nekukasira kutambanudza polymer inonyungudika kuburikidza nepamusoro-tembiricha uye nekumhanya kwemhepo kufefetera. Zvimedu zvepolymer zvinodziiswa uye kumanikidzwa kupinda munzvimbo yakanyungudutswa nescruder extruder, uye wobva wapfuura nemugero rekugovera rekunyungudutsa kuti usvike paburi remuromo kumberi kwemuromo. Mushure me extrusion, ivo vanowedzerwa nekunatswa nekutambanudza maviri anochinja-kumhanya uye epamusoro-tembiricha airflows. Faibha dzakanatswa dzinotonhodzwa uye dzakasimba pamudziyo wemachira weketeni kuita jira rinonyunguduka risiri rakarukwa.
Iyo inoramba ichinyunguduka yakavhuvhuta isiri-yakarukwa tekinoroji yekugadzira machira yapfuura makore makumi maviri ebudiriro muChina. Minda yekushandiswa kwayo yakawedzera kubva kune zvinoparadzanisa bhatiri, mafirita, zvinhu zvinotora mafuta, uye zvekudzivirira kune zvekurapa, hutsanana, hutano, dziviriro, uye mamwe minda. Tekinoroji yayo yekugadzira yakagadzirawo kubva kune imwechete yakanyunguduka yakavhuvhuta kugadzirwa kuenda kune inoumbwa nzira. Pakati pazvo, zvinhu zvakanyungudutswa zvakaputirwa neelectrostatic polarization kurapwa zvinogona kushandiswa zvakanyanya kucheneswa kwemhepo mukugadzira zvemagetsi, chikafu, chinwiwa, makemikari, airport, hotera nedzimwe nzvimbo, pamwe nemasiki ekurapa epamusoro-soro, mabhegi emaindasitiri uye echivanhu anounganidza guruva, nekuda kwekuderera kwavo kwekutanga kuramba, hombe yekubata guruva, uye yakanyanya kusefa.
Iyo yakanyungudutswa jira risiri rakarukwa rakagadzirwa nepolypropylene zvinhu (rudzi rwe Ultra-yakanaka electrostatic faibha jira rinogona kubata huruva) rinokanganiswa nezvinhu zvakaita sefiber pore saizi uye ukobvu, izvo zvinokanganisa kusefa maitiro. Zvimedu zvemadhayamita akasiyana zvinosefa kuburikidza nemisimboti yakasiyana, senge vhoriyamu, mhedzisiro, misimboti yekupararira inotungamira kune fiber blockage, uye zvimwe zvimedu zviri kusefa neelectrostatic fibers kuburikidza nemagetsi ekukwezva misimboti. Iyo yekusefa inoshanda bvunzo inoitwa pasi peiyo particle size inotsanangurwa neyakajairwa, uye akasiyana mazinga achashandisa zvidimbu zvehukuru hwakasiyana kuyedza. BFE inowanzoshandisa mabhakitiriya aerosol zvidimbu zvine avhareji yechidimbu dhayamita ye3 μ m, nepo PFE inowanzoshandisa zvidimbu zvine sodium chloride dhayamita ye0.075 μ m. Zvichingobva pamaonero ekuita kusefa, PFE ine mhedzisiro yepamusoro kupfuura BFE.
Muyedzo yakajairwa yeKN95 level masks, zvimedu zvine aerodynamic dhayamita ye0.3 μ m anoshandiswa sechinhu chekuyedza, nekuti zvimedu zvakakura kana zvidiki pane iyi dhayamita zvinobatika zviri nyore nemasefa fiber, nepo zvimedu zvine saizi yepakati ye0.3 μ m yakaoma kusefa. Kunyange zvazvo mavhairasi ari maduku muhukuru, haakwanisi kupararira ari ega mumhepo. Vanoda madonhwe nemadonhwe nuclei sevatakuri kuti vapararire mumhepo, zvichiita kuti zvive nyore kusefa kunze.
Nheyo yetekinoroji yemucheka wakanyunguduka ndeyekuita kusefa kwakanaka uku uchidzikisa kuramba kwekufema, kunyanya kune N95 uye pamusoro pemachira akanyunguduka, VFE giredhi meltblown machira, maererano nekugadzirwa kwepolar masterbatch, kuita kwezvinhu zvakanyunguduka, kutenderera kwemitsara yakanyungudika, uye kunyanya kuwedzerwa kwepolar masterput ukobvu uye yunifomu yehuni. Kuwana kushomeka kwekushomeka uye kushanda kwakanyanya ndiyo inonyanya kukosha tekinoroji.
Zvinhu zvinokanganisa kunaka kwemachira akanyunguduka
MFI yepolymer mbishi zvinhu
Meltblown jira, seyakanakisa chipingamupinyi chidziviso chemamaki, chinhu chakanyanya kunaka chinoumbwa neakawanda anopindirana eultrafine faibha akaturikidzana munzira isina kujairika mukati. Tichitora PP semuenzaniso, iyo yakakwira MFI, iyo yakakwenenzverwa waya yakaburitswa panguva yekunyunguduka yakavhuvhuta kugadzirisa, uye zvirinani kusefa kuita.
Angle of hot air jet
Iko kona yejekiseni remhepo inopisa inonyanya kukanganisa maitiro ekutambanudza uye fiber morphology. Kona diki inosimudzira kugadzirwa kweparallel fiber bundles muhova dzakanaka, zvichikonzera kusafanana kwakashata kwemachira asina kurukwa. Kana kona yacho yakananga ku90 °, mhepo yakapararira kwazvo uye ine mhirizhonga inogadzirwa, izvo zvinogonesa kugovaniswa kwemafayibha paketeni remesh, uye mhedzisiro inonyungudika yakaputirwa jira ichave yakanaka anisotropy performance.
Screw extrusion speed
Pasi pekushisa nguva dzose, iyo extrusion rate ye screw inofanira kuchengetedzwa mukati meimwe nzvimbo: pamberi penzvimbo yakaoma, iyo inokurumidza kukurumidza kukurumidza, iyo yakakwirira yehuwandu uye simba remucheka wakanyunguduka; Kana kukosha kwakakosha kuchipfuura, simba remucheka wakanyunguduka rinoderera, kunyanya kana MFI> 1000, iyo inogona kunge yakakonzerwa nekusakwana kutambanudza kwefilament kunokonzerwa nepamusoro-soro ye extrusion rate, zvichiita kuti kutenderera kwakanyanya uye kuderedzwa kwekubatanidza fiber pamusoro pemucheka, zvichiita kuti kuderera kwesimba remucheka wakanyunguduka.
Kupisa kwemhepo uye tembiricha
Pasi pemamiriro akafanana etembiricha, screw speed, uye kugashira kure (DCD), ndiko kukurumidza kwemhepo inopisa, dhayamita yefayibha idiki, uye kupfava kweruwoko kunonzwa kwejira risiri rakarukwa, zvichiita kuti pave nefiber entanglement, inotungamira kune denser, yakatsetseka, uye yakasimba fiber web.
Kugamuchira kure (DCD)
Kurebesa kureba kwekugamuchira kureba kunogona kutungamirira mukudzikira kwesimba rerefu uye rakachinjika, pamwe nekukotama simba. Iro jira risiri rakarukwa rine fluffy magadzirirwo, izvo zvinogona kuguma nekudzikira kwekuita kusefa uye kuramba panguva yekunyunguduka kunoputika maitiro.
Nyunguduka yakavhuvhuta mold musoro (yakaoma index)
Mold zvinhu uye gadzira tembiricha yekumisa. Kushandisa imwe simbi yeforoma yakaderera panzvimbo pacho kunogona kukonzera kutsemuka kwakajeka kusingaonekwe nemaziso panguva yekushandiswa, rough aperture process, kusarongeka zvakanaka, uye kushanda kwemuchina wakananga pasina kurapwa. Kukonzera kusaenzana kupfapfaidza, kusasimba kusimba, kusaenzana kwekupfapfaidza ukobvu, uye nyore crystallization.
Kusveta pasi pasi
Maitiro maparamendi akadai semhepo vhoriyamu uye kudzvanywa kwe net pazasi kuyamwa
Net speed
Iko kumhanya kweketeni remesh kunononoka, huremu hwemucheka wakanyunguduka wakakwira, uye kusefa kwekuita kwakakwira. Pane kudaro, ichokwadiwo.
Polarizing mudziyo
Iwo ma paramita akadai se polarization voltage, nguva yepolarization, polarization molybdenum waya kureba, uye polarization nharaunda humidity zvese zvinogona kukanganisa kunaka kwekusefa.
Dongguan Liansheng Non woven Technology Co., Ltd.yakavambwa muna Chivabvu 2020. Ibhizimusi rekugadzira jira rakakura risingarukwe rinobatanidza tsvakiridzo nekusimudzira, kugadzira, uye kutengesa. Inogona kuburitsa mavara akasiyana-siyana ePP spunbond machira asiri akarukwa ane hupamhi husingasviki 3.2 metres kubva pa9 gramu kusvika 300 magiramu.
Nguva yekutumira: Nov-28-2024