Iimaskiziilaphu ezingalukwanga, ezingamalaphu angalukwanga ngokungafaniyo neelaphu zelaphu, kwaye zenziwe ngeefayibha ezibhekiselele kwicala okanye ezingacwangciswanga.
Iimaski zonyango zihlala zizakhiwo ezineeleya ezininzi, ezibizwa ngokuba zizakhiwo zeSMS (iileya ezi-2 S kunye ne-1 M). Okwangoku, elona nani liphezulu leeleya eTshayina zii-5, ezizezi ii-SMMMS (iileya ezi-2 S kunye neeleya ezi-3 M).
Yintoni i-SMS?
Apha, i-S imele umaleko weSpunbond. Ububanzi befayibha bukhulu kakhulu, malunga ne-20 microns (m). Umsebenzi ophambili we-2 S Spunbond layers kukuxhasa lonke ulwakhiwo lwelaphu elingalukwanga, olungenampembelelo inkulu kwisithintelo. Eyona nxalenye ibalulekileyo yemaski yi-barrier layer okanye i-Meltblown layer M (Meltblown layer). Ububanzi bomaleko wespray onyibilikisiweyo buncinci kakhulu, malunga ne-2 microns (M), ngoko ke yi-1/2 yeshumi kuphela yobubanzi bomaleko we-spunbonding, odlala indima ebalulekileyo ekuthinteleni iintsholongwane kunye nokungena kwegazi.
Iimaski zonyango eziqhelekileyo zihlala zisebenzisa ilaphu lokutshiza elinyibilikayo elinobunzima obuziigram ezingama-20, iimaski zekomityi ze-N95 zisebenzisa ilaphu lokutshiza elinyibilikayo elinobunzima obuziigram ezingama-40 nangaphezulu.
Ngokwezibalo ze-China Industrial Textile Industry Association, ekupheleni kuka-2018, kukho imigca yemveliso yasekhaya eyi-1,477 ene-spunbonded, engama-65 ngaphezulu kunaleyo yonyaka ophelileyo, kunye nokunyuka konyaka nge-4.6%, phakathi kwayo, umgca wemveliso ye-PP spunbonded non-wovens unyuswe nge-3.38%, umgca wemveliso ye-SMS composite phantse nge-13%, kunye nomgca wemveliso ye-PET spunbonded non-wovens nge-9.32%. Inani leenkampani ezinemveliso yonyaka edlula iitoni ezingama-50,000 nalo linyukile ukusuka ngo-2017. Amashishini e-Spunbonded akhawulezisa uphuhliso lwawo ukuya kwinqanaba, ukuqina kunye nenqanaba eliphezulu ukuhlangabezana neemfuno zemarike zokuphucula imveliso kunye nokuphucula itekhnoloji.
Ukususela ngo-2018, amashishini amaninzi asekhaya aphuhlise iimveliso zawo ngendlela elula, ebhityileyo nesebenza kakuhle, kwaye afumene iziphumo ezilungileyo. Inkqubo ye-SSMMS spunbonded/molten shotcreting composite isebenza ngesantya esiphezulu se-600m/min okanye ngaphezulu; Malunga ne-10 grams ngemitha yesikwere nganye iimveliso ezithambileyo nezisemgangathweni ozinzileyo ziyaqhubeka nokuvela.
Ivela phi ilaphu elingalukwanga le-SMS?
Amalaphu angalukwanga e-SMSZenziwe kakhulu nge-polypropylene PP (ezineempawu zendalo zebhakteriostatic kunye ne-hydrophobicity), kwaye ububanzi beefayibha bungafikelela kwi-0.5-10 microns. Ezi fayibha zicolekileyo kakhulu ezine-capillarity ekhethekileyo zandisa ubungakanani kunye nommandla womphezulu weefayibha kwindawo nganye, ngaloo ndlela zenza amalaphu atshizwe ngokunyibilika abe neempawu ezilungileyo zokucoca umoya, nto leyo eyenza ukuba zibe zizinto zemaski ezilungileyo.
Okwangoku, kukho iinkqubo ezintathu eziphambili zokwenza iimveliso zeSMS (ilaphu elingalukwanga leSMS): "inkqubo yenyathelo elinye", "inkqubo yenyathelo ezimbini" kunye "nenkqubo yenyathelo elinye nesiqingatha".
Iimpawu zenyathelo elinye kukusetyenziswa kwecandelo lezinto ezikrwada zale nkqubo, kusetyenziswa ubuchwepheshe obubini obusontiweyo, obunyibilikisiweyo, obujikeleziswa ngqo emva kokunyibilika kwiinethi, logama nje kulungiselelwe inkqubo eyahlukeneyo yobunjineli beenkqubo zokujikelezisa, kwaye kungenziwa iimveliso ngesakhiwo esahlukileyo, ilaphu ngalinye elifakwe ilaphu elihlanganisiweyo, lidla ngokuba nokuhlanganiswa kwe-rolling mill eshushu ibe yilaphu. "Indlela yenyathelo elinye" ibonakaliswa ngokunyibilika ngqo kwinethi, imeko yenkqubo nganye yokujikelezisa inokulungiswa ngokuzimeleyo, inkqubo yemveliso yolawulo oluqinileyo, iimeko zempilo ezilungileyo, isantya esiphezulu, inokulungisa umlinganiselo wenethi nganye yefayibha, inokuvelisa iimveliso zohlobo lweSMS zeenkcukacha ezahlukeneyo, yiteknoloji ephambili namhlanje.
Inkqubo enamanyathelo amabini: Xa kusetyenziswa inkqubo enamanyathelo amabini ukuvelisa iimveliso zeSMS, iimveliso ezigqityiweyo zelaphu elisontiweyo kunye nelaphu elitshiziweyo liyavulwa ngendlela ethile, emva koko lifakwe ilaphu elitshiziweyo ngokulandelelana, emva koko lidityaniswe nesixhobo sokugaya esishushu, kwaye lihlanganiswe libe ziimveliso zeSMS. Indlela enamanyathelo amabini ibonakaliswa zizixhobo ezilula kunye nexabiso eliphantsi. Enyanisweni, inkqubo "enamanyathelo amabini" yiteknoloji ye-lamination composite esetyenziswa kakhulu, kodwa inokuba yinhlanganisela yezinye izinto, kunye nezinye izinto ezahlukeneyo, kunye neendlela ezahlukeneyo, ezifana ne-ultrasonic, i-hot melt adhesive, iileya ezintathu zezinto kunye.
Indlela yenyathelo elinye nesiqingatha: kwindlela yenyathelo ezimbini, kunokwenzeka ukutshintsha imveliso yelaphu lokutshiza elinyibilikisiweyo nge-fiber net enyibilikisiweyo yomaleko wokutshiza eyenziwe entsimini, ngaloo ndlela kufumaneke inkqubo edibeneyo ebizwa ngokuba yi-"one-half step method". Ilaphu eli-spunbonded lisetyenziswa njengomaleko osezantsi kunye nomaleko womphezulu zizixhobo ezimbini zokuqhawula, kwaye i-fiber net yokutshiza enyibilikisiweyo yomaleko ophakathi ijikeleziswa ngqo kwi-net yinkqubo yokutshiza enyibilikisiweyo, ibekwe kumaleko osezantsi welaphu eli-spunbonded, ize igqunywe ngomaleko ongaphezulu welaphu eli-spunbonded, kungcono ukusebenzisa i-hot mill edityaniswe kwiimveliso ze-SMS.
Ixesha lokuthumela: Septemba-14-2020