Kuyambira m'mawa wa zaka za m'ma 2000, chitukuko chansalu yopanda ulusi yosungunukapadziko lonse lapansi lakhala likupita patsogolo kwambiri.
Kampani ya Hills ndi Kampani ya Nordson ku United States apanga bwino ukadaulo wa meltblown wa zinthu ziwiri kale, kuphatikizapo mtundu wa khungu, mtundu wa mbali ndi mbali, katatu, ndi zina zotero, nthawi zambiri ulusi wake ndi wofanana ndi 2 & micro;, chiwerengero cha mabowo pa inchi iliyonse ya zinthu zozungulira meltblown chimatha kufika mabowo 100, kuchuluka kwa extrusion ya bowo lililonse kumatha kufika 0.5 g/min.

Nsalu Yopanda Ulusi ya MeltblownKwa N95 99 Mask | JINHOCHENG

Mtundu wa khungu - pakati pake. Imatha kupangitsa nsalu yosalukidwa kukhala yofewa ndipo imatha kupangidwa kukhala zinthu zozungulira, zachilendo komanso zopangidwa mwapadera. Nthawi zambiri, zinthu zotsika mtengo zimagwiritsidwa ntchito ngati pakati, ndipo ma polima amtengo wapatali okhala ndi ma phukusi apadera kapena ofunsidwa ndi zigawo zakunja za khungu. Mwachitsanzo, pakati pake ndi polypropylene, ndipo khungu lakunja ndi nayiloni kuti ulusi ukhale wosalala; Polyethylene yosungunuka kapena polypropylene yosinthidwa, polyester yosinthidwa, ndi zina zotero. Pa ulusi wakuda woyendetsa mpweya, pakati pake pamakutidwa kunja.
Mtundu wa mbali ndi mbali. Imatha kupangitsa nsalu yopanda nsalu kukhala yopyapyala bwino. Nthawi zambiri imapangidwa ndi ma polima awiri osiyana, kapena polima yemweyo yokhala ndi makulidwe osiyana. Ma filaments ozungulira. Mwachitsanzo, 3M Company yapanga nsalu yopanda nsalu yopangidwa ndi ma filaments a PET/PP bicomponent osungunuka. Chifukwa cha kutayika kosiyana, crimp yozungulira imapangidwa, zomwe zimapangitsa nsalu yopanda nsalu kukhala yopyapyala kwambiri.

Mtundu wa nsonga Izi ndi kuphatikiza polima ina mu mtundu wa trilobal, mtundu wopingasa ndi nsonga. Mwachitsanzo, popanga ulusi wotsutsana ndi static, chinyezi, ndi conductive, polima woyendetsa akhoza kuwonjezeredwa pa nsonga, yomwe imatha kuyendetsa chinyezi ndi kuyendetsa magetsi, antistatic, ndikusunga kuchuluka kwa polima woyendetsa.
Mitundu ya micro-denier Ma modules opangidwa ngati mapeyala a lalanje, ooneka ngati mizere, kapena ma modules opangidwa ngati ocean-islet angagwiritsidwe ntchito. Ma polima awiri osalumikizana amapangidwa kuti apange ma webu a ulusi wabwino kwambiri, kapena ma webu a nanofiber, ofanana ndi ma filaments a bicomponent omwe amapangidwa ndi Kimberly-Clark, omwe ndi ma filaments a bicomponent opangidwa ndi ma polima awiri osalumikizana. Mu ulusi wa element wochepera sekondi imodzi m'madzi otentha, ma polima awiriwa amatha kupangidwa kwathunthu kuti apange ukonde wa microfiber. Mtundu wa islet uyenera kusungunula nyanja kuti upeze netiweki yabwino ya islet fiber.

Mtundu wa mongrel Ndi ukonde wa ulusi womwe umaphatikiza zinthu zosiyanasiyana, mitundu yosiyanasiyana, ulusi wosiyanasiyana, mawonekedwe osiyanasiyana opingasa, komanso ndi ulusi wapakati pa khungu, ulusi wopindika komanso ulusi wa bicomponent, kotero kuti ulusiwo uli ndi mapaketi ofunikira. Poyerekeza ndi zinthu za ulusi wosungunuka, mtundu uwu wa nsalu yosungunuka ya bicomponent ulusi wosakanizidwa kapena nsalu yosakanizidwa ya ulusi wosakanizidwa ukhoza kupititsa patsogolo kusefa kwa sludge medium, ndikupangitsa kuti sludge medium ikhale ndi antistatic, electrical conductivity, hygroscopicity, yowonjezera kukongoletsa mapaketi a hedge, ndi zina zotero. kapena kuchepetsa mgwirizano, voluminousness ndi air permeability ya ulusi.

Ulusi wosungunuka wa zinthu ziwiri ukhoza kulimbitsa magwiridwe antchito a polima imodzi. Mwachitsanzo, polypropylene ndi yotsika mtengo, koma ngati igwiritsidwa ntchito m'zida zamankhwala, siimalimbana ndi kuwala kwa dzuwa. Mwanjira imeneyi, polypropylene ingagwiritsidwe ntchito ngati maziko ndipo gulu lakunja loyenera likhoza kutchulidwa. Vuto la kukana kuwala kwa dzuwa likhoza kuyankhidwa pomanga polima wosasunthika ndi kuwala kwa dzuwa kunja. Potero, mankhwalawa akhoza kukhala otsika mtengo ndipo akhoza kukwaniritsa zinthu zogwirira ntchito, monga zosinthira kutentha ndi chinyezi zomwe zingagwiritsidwe ntchito m'machitidwe opumira m'chipatala, ndipo zimatha kupereka kutentha ndi chinyezi choyenera chachilengedwe. Ndi yopepuka, yotayidwa kapena yosavuta kuichotsa, yotsika mtengo, ndipo imagwira ntchito ngati matope atsopano kuti ichotse zoipitsa. Ili ndi maukonde awiri osakanikirana pang'ono a bicomponent meltblown. Imagwiritsa ntchito ulusi wa bicomponent wa jekete-core, pakati ndi polypropylene, ndipo khungu ndi nayiloni. Ulusi wa zigawo ziwiri ungagwiritsenso ntchito magawo apadera opingasa, ofanana ndi trilobal ndi multi-lobed, kuti malo a nkhope akhale akulu, ndipo nthawi yomweyo, ma polima omwe angathandize kukonza magwiridwe antchito a kusefa angagwiritsidwe ntchito mu subcaste ya nkhope kapena gawo la nsonga. Mawebu a ulusi wa Olefin kapena polyester meltblown bicomponent amatha kupangidwa kukhala ozungulira madzi ndi zonyansa za mpweya. Ulusi wa ulusi wosungunuka womwe uli ndi zinthu ziwiri ungagwiritsidwenso ntchito pa nsonga ya matope a ndudu; gwiritsani ntchito mphamvu yopukuta kuti mupange maziko onyamula nkhani apamwamba; ndodo yopukuta kuti musunge madzi ndi kulowetsedwa, ndi zina zotero.

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