Maitiro ekugadzirwa kwemachira asina kuruka anonyunguduka ndeye kushandisa mhepo inopisa inomhanya kwazvo kukwevera rukova rwakatetepa rwepolymer yakanyunguduka yakanyunguduka kubva mugomba rekufa, nekudaro kugadzira tambo dzemhando yepamusoro-soro uye kukwenenzverwa paketeni remambure kana roller, uye kuvimba nemaBond pachawo kuti ave jira risiri rakarukwa.

Kuenzanisa kwefiber yakanyunguduka uye spun-bond fiber:
● Kureba kweFiber: Spunbond is filament, meltblown is a short fiber.
● Simba reFiber: Spunbond fiber simba> Meltblown fiber simba.
● Fiber fineness: Meltblown fiber yakatetepa kudarika spun-bond fiber.

Zvishandiso zvinonyungudutsa zvakakamurwa kuita mhando dzakachinjika uye dzakadzika zvichienderana nemaitiro avo ekuisa.

1. Maitiro ekuyerera uye midziyo
Meltblown process

Kugadzirira polymer → nyungudutsa extrusion → metering pombi → nyungudusa inofefetera dhizaini → nyungudutsa inoyerera inotambanudza → kutonhora → yekugamuchira mudziyo

Zvishandiso zvinosanganisirwa mupp meltblown isiri-yakarukwa jira rekugadzira mutsara

Midziyo mikuru: feeder, screw extruder, metering pombi, meltblown die assembly, air compressor, air heater, inogashira mudziyo, mamhepo mudziyo. Kuti ugadzire polyester uye zvimwe zvigadzirwa, chip drying mudziyo unodiwa zvakare.

Midziyo yekubatsira: kufa yekuchenesa choto, electrostatic application mudziyo, uye pfapfaidzo mudziyo, nezvimwe.

1. Kudyisa

Yakaiswa pane hopper ye extruder. Basa rekudyisa nderekusveta zvimedu zvepolymer muhopper yescruder extruder. Kazhinji ine otomatiki basa. Nhamba yekudyisa pane imwe nguva yeyuniti inogona kuiswa zvichienderana nekubuda kweiyo yose mutsara wekugadzira.
2. Kukurura extruder
3. Pombi yemamita
4. Meltblown die head assembly
Iyo gungano rekufa ndiyo inonyanya kukosha yemidziyo yakanyungudika, kunyanya kusanganisira:

1. Polymer melt kugovera system
2. Die musoro system

Polymer melt kugovera sisitimu
Iyo polymer yakanyungudika yekugovera sisitimu inogona kuve nechokwadi chekuti iyo polymer melt inoyerera yakaenzana pahurefu hweiyo meltblown die uye ine nguva yekugara yakafanana, nekudaro kuve nechokwadi chekuti jira risiri rakarukwa rinonyungudutswa rine zvimwe zvinhu zvakafanana pahupamhi.

Die system
Iyo die head system inoumbwa ne spinneret, gasi ndiro, kupisa uye kupisa kuchengetedza zvinhu, nezvimwe.
Kufanana kwezvinhu zvakanyungudutswa zvine hukama nekufa. Kazhinji, iko kurongeka kweiyo meltblown kufa musoro kwakakwira, saka mutengo wekugadzira wemusoro wekufa unodhura.

Die system

5. Mhepo hita
Iyo meltblown process inoda mhepo inopisa yakawanda. Iyo mhepo yakamanikidzwa inobuda nemhepo compressor inobviswa humidified uye kusefa uye yotumirwa kune hita yemhepo yekudziya, uye yozotumirwa kune meltblown die assembly. Mhepo inopisa ndiro mudziyo wekumanikidza, uye panguva imwechete inofanira kurwisa oxidation yemhepo yepamusoro-yepamusoro, saka zvinhu zvinofanira kuva simbi isina tsvina.

6. Kugamuchira mudziyo
Mhando huru dzemeltblown process yekugamuchira michina ndeiyi: roller type, flat-screen type
Matatu-dimensional molding (mandrel): chishandiso chekugadzira mafirita zvinhu
Gamuchira mudziyo wekugamuchira wemativi matatu, wakakamurwa kuva wekugashira kwepakati uye nekuramba uchigamuchira.

Chishandiso chekugamuchira nguva nenguva
Iyo yekugamuchira mudziyo inofamba ichienda mberi uye mberi, uye mafiber akakuvadzwa pane mandrel muzvikamu zvakawanda; chinhambwe chekugamuchira chinoshandurwa kuti chigadzire sefa chinhu chine density gradient;
Chinja saizi ye mandrel kuti ibudise mafirita zvinhu zvine madhayamita akasiyana emukati. Mushure mesefa yega yega chinhu chagadzirwa, iyo mandrel inoda kutsiviwa, saka kugona kwekugadzira kwakadzikira.

Kuramba kuchigamuchira mudziyo
Iyo mandrel inogashira iri muchimiro che cantilever danda, uye kune yekufambisa shaft yekuburitsa tubular sefa chinhu. Musoro wekupedzisira weiyo shaft yekutapurirana yakasungwa, uye iyo tubular sefa element inoburitswa kubva kune inogashira mandrel uye inoendeswa kune yekucheka system.
Paunenge uchigadzira mafirita ane density gradients, akawanda anofa misoro ane akasiyana ekugamuchira madaro anofanirwa kuve akashongedzerwa.

7. Zvigadzirwa zvekubatsira
Iyo huru yekubatsira midziyo yemutsetse wekugadzira yakanyungudika ndiyo inofa yekuchenesa choto. Gomba blockage ichaitika mushure mekunge iyo meltblown die head yagadzirwa kwenguva yakati. Panguva ino, iyo meltblown die head inoda kutsiviwa.
Iyo yakatsiviwa meltblown die inoda kudzingwa kubvisa iyo polymer uye tsvina yasara mufa. Screws uye spinnerets zvinowanzogochwa kubvisa mapolymer akasara uye tsvina.

2. Raw zvinhu zvinoshandiswa mu meltblown
Mune dzidziso, ese thermoplastic (yakakwira-tembiricha kunyungudika, yakadzika-tembiricha solidification) polymer chip mbishi zvinhu zvinogona kushandiswa mukunyungudika. Polypropylene ndeimwe yeanonyanya kushandiswa chip zvinhu zve meltblown tekinoroji. Kunze kwezvo, iyo inowanzo shandiswa polymer chip zvinhu zve meltblown tekinoroji zvinosanganisira polyester, polyamide, polyethylene, polytetrafluoroethylene, polystyrene, PBT, EMA, EVA, etc.Rudzi rwepolymer inosarudza nzvimbo yekunyungudika uye rheological properties. Kune yega yega polymer raw material, kune inoenderana kunyunguduka kuvhuvhuta maitiro, senge tembiricha yekudziya, screw urefu-kusvika-dhayamita reshiyo, screw fomu, mbishi kuomesa maitiro, nezvimwe, pane mimwe misiyano.
Olefin polymer mbishi zvinhu (senge polypropylene) ine yakakwira dhigirii yepolymerization, saka tembiricha yekudziya yakakwira kupfuura yekunyungudika kwayo 100 ℃ kana kukwira inogona kunyungudutswa zvakanaka, ukuwo tembiricha yekudziya yepolyester yakakwira zvishoma pane yekunyungudika kwayo inogona kunyungudika. Olefin raw materials kazhinji haidi kuomeswa. Iyo polyester inofanira kunge yakaomeswa.
Huremu hwemamorekuru uye huremu hwehuremu hwepolymer mbishi zvinhu ndizvo zvakanyanya kukosha zvinokanganisa maitiro ekunyungudika uye kuita kwemachira akanyunguduka asina kurukwa.
Kune iyo meltblown process, zvinotendwa kuti kuderera kwema molecular huremu uye kutetepa kwema molecular huremu kugovera kwepolymer mbishi zvinhu zvinobatsira mukufanana kwewebhu yakanyungudika. Iyo yakaderera iyo molecular uremu hwepolymer, iyo yakakwira iyo melt flow index (MFI, melt flow index, inoreva huremu hwekunyungudika kunoyerera kunze kwemaminetsi gumi pasi pekumwe kudzvanywa uye tembiricha), uye kudzikisa kunyunguduka kunyunguduka, kunonyanya kukodzera iyo Iyo meltblown process ine isina kusimba kunyora maitiro.

3.magadzirirwo uye zvinhu zve meltblown non-woven fabrics
Humwe hunhu hwemachira akanyunguduka asiri akarukwa ndeokuti iyo fiber fineness idiki, kazhinji isingasviki 10 μm, uye yakawanda yefiber fineness ndeye 1 kusvika 4 μm.
Masimba akasiyana-siyana pamutsara wese wekutenderera kubva kumeltblown die nozzle kusvika kuchigadziro chekugamuchira hachigone kuenzana (simba rekutambanudza simba rekuchinja kwekushisa kwepamusoro uye nekumhanya-mhanya kwemhepo, kumhanya, uye tembiricha yemhepo inotonhorera, nezvimwewo), izvo zvinoita kuti iyo yakanyunguduka fiber Hukuru hwakasiyana hwekunaka.
Kufanana kwedayamita yefayibha mumucheka wedandemutande rakarukwa risiri rakarukwa zviri nani pane iya yefaibha yakanyunguduka, nekuti mukuruka kwebhondi, mamiriro ekuruka akadzikama, uye mamiriro ekunyora nekutonhodza haachinji.
Iyo crystallinity uye orientation ye meltblown fiber idiki pane iyo ye spun-bond nzira. Naizvozvo, kusimba kwefiber yakanyunguduka kwakashata, uye kusimba kwedandemutande rakashata zvakare. Kusimba kweanoverengeka PP fibers ndeaya anotevera:

Kusimba kweakawanda PP fibers

Nekuda kwekusimba kwakashata kwemafiber akanyunguduka, kushandiswa kunoshanda kwemachira asina kuruka anonyunguduka kunonyanya kukonzerwa nehunhu hwemafibhi ayo akanyanya kunaka.

4.kushandiswa kwemeltblown machira asina kurukwa
Parizvino, machira asina kurukwa anonyungudika anonyanya kushandiswa ku:
1 sefa zvinhu
Kusefa ndiko kupatsanurwa kwechinhu chakaparadzirwa mugasi kana mvura.
Filtration mechanism: sieving deposition, electrostatic deposition, diffusion deposition, nezvimwe.
Zvimedu zvakakura here kupfuura saizi yepore yechinhu chekusefa chinofanira kusefa?
Zvidzidzo zvakaratidza kuti: zvinhu zvemasefa zvine saizi yepore iri pakati pegumi nemakumi emamicron zvinogona kubata huruva kusvika 1 µm. Kuti uvandudze sedimentation mhedzisiro yesefa, zvinodikanwa kudzikisa saizi yepore yezvinhu sefa, ndiko kuti, kuderedza fibre fineness uye kuwedzera kuwanda kwezvinhu.
Meltblown isiri-yakarukwa zvinhu zvine zvakanakira fibre yakanaka, mapores akawanda, uye diki pore size.

shanduro:
Gasi kusefa: masks ekurapa, sefa zvinhu zvemukati memhepo air conditioners.
Liquid filtration: chinwiwa kusefa, kusefa kwemvura.
Kuti uvandudze mhedzisiro yekusefa, iyo fiber fineness inogona kuderedzwa uye kuwanda kweiyo sefa zvinhu kunogona kuwedzerwa, asi zvinokonzeresa kuwedzera kukuru mukupokana kwekusefa.
Naizvozvo, rega iyo yakanyungudika isiri-yakarukwa zvinhu zvipiswe nemagetsi, uye kusefa kwayo kunogona kuvandudzwa kuburikidza neiyo electrostatic mhedzisiro, ndiko kuti, electret kurapwa.
Iyo electret-yakagadziriswa meltblown isina-yakarukwa jira ine inogara kwenguva refu static magetsi uye inogona kuvimba ne electrostatic mhedzisiro kuteya guruva rakatsetseka, saka ine mabhenefiti epamusoro kusefa kunyatsoshanda uye kushomeka kwesefa kuramba.
Polypropylene ine yakakwirira yemagetsi resistivity (7 × 1010Ω · cm) uye yakakura yekuchaja jekiseni kugona. Icho chinhu chakanakira kugadzira electret fibers. Ongororo dzinoratidza kuti mushure memaawa 1440 ekuchengetedza kweelectret-yakapedza polypropylene meltblown isina-yakarukwa jira mumamiriro echisikigo, iyo filtration inoshanda inoramba isingachinji.
Iko kupesvedzera kweelectret kupedzisa pane kusefa kunyatsoita uye kuramba kwemeltblown isina-kurukwa machira.

Iyo pesvedzero yekupedzisa kwe electret pakuita kusefa uye kuramba kwemeltblown asina kurukwa machira

Zvinogona kuonekwa kuti kupikisa kwefiltration ye-meltblown non-loven fabric haina kuchinja mushure mekupedza electret, asi kushanda kwesefa kwakagadziridzwa zvakanyanya, izvo zvisingafananidzi nemamwe machira asina kugadzirwa.

2. Zvinhu zvekurapa uye zvehutano
Mask yekurapa: chinhu chinoumbwa (SMS) chakagadzirwa ne-spun-bond zvinhu pane zvemukati nekunze zvidimbu, uye zvakanyunguduka zvinhu pakati.

3. Zvishandiso zvekuchengetedza zvakatipoteredza (mafuta-absorbing zvinhu)
Polypropylene meltblown jira risiri rakarukwa chinhu chakanaka chinotora mafuta nekuda kwehunhu hwayo uye chimiro chemicrofiber. Yakave ichishandiswa zvakanyanya munyika dzakabudirira dzakadai seEurope, America, Japan, nezvimwewo, sekuteuka kwemafuta emugungwa, kuraswa kwemafuta kubva mumidziyo yemufekitori, uye kuchenesa tsvina.
Polypropylene meltblown non-woven fabric ine hydrophobic uye lipophilic properties, inoshingirira kune yakasimba asidhi nemaalkali, uye ine density yakaderera pane mvura. Mushure mekutora mafuta, inogona kuyangarara pamusoro pemvura kwenguva yakareba isina deformation uye inogona kushandiswazve uye kuchengetwa kwenguva yakareba. Polypropylene meltblown micheka isiri-yakarukwa inogadzirwa kuita tambo dzinotora mafuta, maketani anobata mafuta, mapiro anotora mafuta, nezvimwewo. Kutora mafuta kunogona kusvika 10-50 nguva inorema.

4. Zvipfeko (zvinhu zvinodziya-kuchengetedza)
Thermal insulation zvinhu zvinofanirwa kuve nezvakanaka zvekupisa zvimisikidzo uye zvinogona kushandiswa kwenguva yakareba pasina kushandura zvimiro zvavo zvekupisa.
Zviyedzo zvinoratidza kuti iyo fiber mesh chimiro ndechimwe chezvinhu zvikuru zvinokanganisa kupisa kwekufambisa kuita kwezvinhu zvinopisa zvekupisa.
Kune iyo meltblown composite thermal insulation material, ukobvu hwayo hunoita zvishoma pakupinda kwemhepo, ukuwo kupinza kwemhepo kwepolyester fiber flakes kunowedzera nekukurumidza sezvo ukobvu hunodzikira. Naizvozvo, iyo meltblown composite thermal insulation material ine yakasimba mhepo inopikisa.

5. Battery separator
Iyo diaphragm zvinhu chinhu chakakosha chebhatiri uye inowanzoiswa pakati peakanaka uye asina kunaka mahwendefa. Basa guru nderokuisa mahwendefa akanaka uye asina kunaka kuti ave nechokwadi chekuyerera kwe dielectric.
Polypropylene zvinhu zvine yakanakisa asidhi uye alkali kuramba. Polypropylene meltblown diaphragm zvinhu zvine hunhu hudiki pore saizi, hombe porosity, kushoma kuramba, uye kwakasiyana zvigadzirwa shanduko.