Melt blown njira ndi njira yopangira ulusi potambasula mwachangu polima kusungunula kudzera pakuwomba kwambiri komanso kuthamanga kwa mpweya. Magawo a polima amatenthedwa ndikuunikizidwa kuti asungunuke ndi wononga wononga, kenako ndikudutsa munjira yosungunula kuti ifike pabowo lakutsogolo kwa bowo. Pambuyo pa extrusion, amayengedwanso mwa kutambasula ma airflows awiri othamanga kwambiri komanso otentha kwambiri. Ulusi woyengedwawo umazirala ndikulimbitsidwa pa chipangizo chotchinga cha mauna kuti apange chinsalu chosungunula chosalukidwa.
Ukadaulo wopitilira muyeso wowombedwa wopanda nsalu wapita zaka zopitilira 20 ku China. Magawo ake ogwiritsira ntchito akula kuchokera ku zolekanitsa mabatire, zosefera, zida zoyamwa mafuta, ndi zida zotchinjiriza kupita ku zamankhwala, ukhondo, chisamaliro chaumoyo, chitetezo, ndi magawo ena. Ukadaulo wake wopanga nawonso wayamba kuchokera pakupanga kusungunula kumodzi kupita kumalo ophatikizika. Pakati pawo, kusungunula zida zopangira zida zomwe zakhala zikuchitidwa ndi electrostatic polarization zitha kugwiritsidwa ntchito kwambiri pakuyeretsa mpweya pakupanga zamagetsi, chakudya, chakumwa, mankhwala, eyapoti, hotelo ndi malo ena, komanso masks ochita bwino kwambiri azachipatala, matumba osonkhanitsa fumbi a mafakitale ndi anthu wamba, chifukwa cha kukana kwawo kocheperako, fumbi lalikulu logwira ntchito, komanso kusefera kwakukulu.
Nsalu yosungunuka yopangidwa ndi zinthu za polypropylene (mtundu wa nsalu zabwino kwambiri za electrostatic fiber zomwe zimatha kugwira fumbi) zimakhudzidwa ndi zinthu monga kukula ndi makulidwe a fiber pore, zomwe zimakhudza kusefera. Tinthu tating'onoting'ono tosiyanasiyana amasefedwa kudzera mu mfundo zosiyanasiyana, monga voliyumu ya tinthu, mphamvu, mfundo zophatikizika zomwe zimatsogolera kutsekeka kwa ulusi, ndi tinthu tating'onoting'ono tosefedwa ndi ulusi wama electrostatic kudzera mu mfundo zokopa za electrostatic. Mayeso a kusefera amachitidwa pansi pa kukula kwa tinthu komwe kumatchulidwa ndi muyezo, ndipo miyezo yosiyanasiyana idzagwiritsa ntchito tinthu tating'ono tosiyanasiyana poyesa. BFE nthawi zambiri imagwiritsa ntchito tinthu tating'onoting'ono tomwe timakhala ndi tinthu tating'onoting'ono ta 3 μ m, pomwe PFE nthawi zambiri imagwiritsa ntchito tinthu tating'onoting'ono ta sodium chloride m'mimba mwake ya 0.075 μ m. Kungotengera momwe kusefera moyenera, PFE ili ndi zotsatira zapamwamba kuposa BFE.
Pakuyesa kokhazikika kwa masks a KN95 level, tinthu tating'onoting'ono ta 0.3 μm timagwiritsidwa ntchito ngati chinthu choyesera, chifukwa tinthu tating'onoting'ono tokulirapo kapena ting'onoting'ono kuposa m'mimba mwake timalandidwa mosavuta ndi ulusi wosefera, pomwe tinthu tating'onoting'ono ta 0.3 μ m ndizovuta kusefa. Ngakhale kuti mavairasi ndi ang'onoang'ono, sangafalikire okha mumlengalenga. Amafuna madontho ndi madontho amtundu ngati zonyamulira kuti azimwazikana mumlengalenga, kuwapangitsa kuti azisefa mosavuta.
Pakatikati pa ukadaulo wa nsalu ya meltblown ndikukwaniritsa kusefera koyenera ndikuchepetsa kukana kupuma, makamaka kwa N95 ndi pamwamba pa nsalu zosungunuka, nsalu za VFE grade meltblown, potengera mapangidwe a polar masterbatch, magwiridwe antchito a zinthu zosungunuka, kupota kwa mizere yosungunuka, makamaka kuwonjezera kwa polar masterbatch ndi makulidwe a ulusi, zomwe zimakhudza makulidwe a polar ndi makulidwe a ulusi. Kupeza kukana otsika komanso kuchita bwino kwambiri ndiye ukadaulo wapamwamba kwambiri.
Zomwe zimakhudza ubwino wa nsalu zosungunuka
MFI ya polima zopangira
Nsalu ya Meltblown, monga chotchinga chabwino kwambiri chotchinga maski, ndi chinthu chabwino kwambiri chopangidwa ndi ulusi wambiri wodutsana wokhazikika mkati mwachisawawa. Kutengera PP monga chitsanzo, kukwezera kwa MFI, momwe waya amakokera pang'onopang'ono panthawi yosungunuka, komanso kusefera bwino.
Ngongole ya ndege yotentha
Ngodya ya jakisoni wa mpweya wotentha imakhudza kwambiri mphamvu yotambasula komanso mawonekedwe a ulusi. Ngodya yaying'ono imalimbikitsa kupanga mitolo yofananira ya ulusi mumitsinje yabwino, zomwe zimapangitsa kuti nsalu zosalukidwa zisamafanane bwino. Ngati ngodyayo ifika ku 90 °, mpweya womwazika kwambiri komanso wosokonekera udzapangidwa, womwe umathandizira kugawa kwachisawawa kwa ulusi pa nsalu yotchinga, ndipo chifukwa chake, nsalu yowombedwa imasungunuka idzakhala ndi ntchito yabwino ya anisotropy.
Screw extrusion liwiro
Pansi pa kutentha kosalekeza, mlingo wa extrusion wa wononga uyenera kusungidwa mumtundu wina: isanafike povuta kwambiri, mofulumira kuthamanga kwa extrusion, kuwonjezereka kwa kuchuluka ndi mphamvu ya nsalu yosungunuka; Pamene mtengo wovuta udutsa, mphamvu ya nsalu yosungunuka imachepa kwenikweni, makamaka pamene MFI> 1000, yomwe ingakhale chifukwa cha kutambasula kosakwanira kwa filament chifukwa cha kuchuluka kwa extrusion, zomwe zimapangitsa kuti pakhale kupota kwakukulu ndi kuchepetsedwa kwa ulusi wolumikizana pamwamba pa nsalu, zomwe zimapangitsa kuchepa kwa mphamvu ya nsalu yosungunuka.
Kuthamanga kwa mpweya wotentha ndi kutentha
Pansi pa kutentha komweko, kuthamanga kwa wononga, ndi mtunda wolandira (DCD), kuthamanga kwa mpweya wotentha, kucheperachepera kwa ulusi, komanso kufewa kwa dzanja la nsalu yosalukidwa, zomwe zimapangitsa kuti ukonde ukhale wocheperako, wosalala, komanso wamphamvu.
Receiving mtunda (DCD)
Mtunda wotalikirapo wovomerezeka ungayambitse kuchepa kwa mphamvu yayitali komanso yopingasa, komanso mphamvu yopindika. Nsalu yopanda nsalu imakhala ndi mawonekedwe a fluffy, zomwe zingayambitse kuchepa kwa kusefera komanso kukana panthawi yosungunula.
Sungunulani mutu wa nkhungu wowombedwa (cholozera cholimba)
Nkhungu zakuthupi ndi kukonza kutentha kwa ndondomeko. Kugwiritsira ntchito zitsulo zotsika kwambiri za nkhungu m'malo mwake kungayambitse ming'alu yobisika yomwe singawonekere ndi maso panthawi yogwiritsira ntchito, kukonza pobowo molakwika, kusalondola bwino, komanso kugwiritsa ntchito makina mwachindunji popanda kupukuta. Kuyambitsa kupopera mbewu mankhwalawa mosagwirizana, kulimba kosalimba, kupopera mbewu mankhwalawa mosiyanasiyana, komanso crystallization yosavuta.
Net pansi kuyamwa
Njira zoyendera monga kuchuluka kwa mpweya ndi kukakamiza kwa kuyamwa pansi
Liwiro la Net
Kuthamanga kwa nsalu yotchinga ya mesh kumachedwa, kulemera kwa nsalu ya meltblown ndikokwera, ndipo kusefera bwino kumakhala kokwera. M'malo mwake, imagwiranso ntchito yowona.
Polarizing chipangizo
Magawo monga voteji ya polarization, nthawi ya polarization, mtunda wa waya wa polarization molybdenum, ndi chinyezi cha chilengedwe chonse zimatha kukhudza kusefera.
Dongguan Liansheng Non Woven Technology Co., Ltd.idakhazikitsidwa mu Meyi 2020. Ndi bizinesi yayikulu yopanda nsalu yopanga nsalu kuphatikiza kafukufuku ndi chitukuko, kupanga, ndi malonda. Itha kupanga mitundu yosiyanasiyana ya nsalu za PP spunbond zosalukidwa ndi m'lifupi mwake osakwana 3.2 metres kuchokera ku 9 magalamu mpaka 300 magalamu.
Nthawi yotumiza: Nov-28-2024