Spunbond Meltblown Spunbond , feem ntau hu ua SMS yog tri laminate tsis yog ntaub xov. Nws yog tsim los ntawm txheej saum toj kawg nkaus ntawm spunbond polypropylene, txheej nruab nrab ntawm meltblown polypropylene thiab hauv qab txheej ntawm spunbond polypropylene.
Ua li cas SMS tsim?
Cov ntaub no cuam tshuam nrog ob yam, spunbond polypropylene thiab yaj tshuab polypropylene. Hauv tsab xov xwm dhau los, peb tau saib luv luv ntawm kev tsim cov txheej txheem ntawm spunbond polypropylene qhov uas peb piv rau spunlace nyem qhov no kom paub ntau ntxiv
Yog li, peb tig peb txoj kev saib xyuas rau cov txheej txheem yaj tshuab. Tus txheej txheem no tau pib dhau 75 xyoo dhau los los ntawm US Naval Research Laboratories. Txoj kev tshawb nrhiav tau los ntawm kev muaj lub siab xav khaws cov xov tooj cua kom nquag plias los ntawm cov txheej txheej hauv ntiaj teb sab saud. Ua kom zoo li no, nws yog qhov tsim nyog los tsim cov tshuaj fiber siv los siv hauv cov ntxaij lim dej micro denier.
Hauv lub xyoo 1970 thawj chav ua tiav tau tsim cov micro denier webs ua rau cov khoom lag luam ntawm cov ntaub los ntawm polymer siv cov txheej txheem ib leeg.
Cov txheej txheem niaj hnub no pib nrog cov thermoplastic chips ua kom yaj thiab tom qab ntawd extruded. Txog rau hnub tim, Polypropylene tau siv ntau tshaj plaws polymer rau cov tshuab melt tshuab. Qhov kev rho tawm yog tom qab ntawd tas li lim thiab metered los tsim cov xim lim. Kev siv cov cua nrawm tshaj tawm cov kab ua kom zoo dua mus rau cov diameters loj thiab kom cov ua tuab tuab tshwm sim zoo li ua tau zoo dua nteg ntawm cov lim.
Whilst SMS tuaj yeem tsim tawm los ntawm kab laminating txheej txheej ntawm spunbond thiab meltblown webs, ntau denier spinning tso cai rau kev sib txuas ntawm spunbonded thiab yaj cov tshuab ua rau ib lub vev xaib tsis muaj ntaub ntawv. Lub vev xaib no yog tom qab ua ntej sib raug zoo thiab dhau los ntawm daim ntawv qhia hnub rau lub tshuab thermal.
Vim li cas muab spunbond polypropylene nrog yaj tshuab polypropylene los tsim SMS?
Raws li peb paub spunbond polypropylene muaj ntau cov khoom zoo, muaj zog thiab kav ntev yog ob ntawm cov xwb. Ntawm qhov tod tes, meltblown muaj cov khoom uas tsis tshua muaj zog tab sis vim yog cov leeg me dua thiab thaj tsam loj dua coj los ntawm cov fibers, nws muaj cov wicking zoo thiab cov khoom tsis zoo. Yog li ua ke, lawv tuaj yeem tsim cov khoom lag luam uas muaj zog tuaj yeem tuaj yeem ua kom muaj teeb meem rau cov kua thiab ua hmoov me me.
