SMS Nonwoven Fabric yog dab tsi?

SMS nonwoven npuag yog ntau- txheej cov ntaub ntawv tsis-woven, muaj npe tom qab nws cov txheej txheem txheej: Spunbond-Meltblown-Spunbond. Cov khoom no muab cov khaubncaws sab nraud povtseg nrog kev ua haujlwm sib txawv los ntawm cov txheej txheem tsim tshwj xeeb, muab lub zog siab, pom kev ua haujlwm siab, ua pa, thiab lub teeb yuag. Nws yog dav siv hauv kev tiv thaiv kev kho mob, khoom siv tu cev, thiab kev siv hauv kev lag luam.

SMS Nonwoven npuag

Cov qauv thiab cov khoom sib xyaw ntawm SMS Nonwoven Fabric

Txheej Txheej (Spunbond Layer)

Cov khoom tseem ceeb yog polypropylene (PP), nrog qee qhov sib txawv siv polyester (PET) lossis cov khoom siv biodegradable (xws li, PLA). Cov txheej txheem cuam tshuam nrog melting thiab extruding polymers los tsim cov filaments txuas ntxiv, uas tom qab ntawd ncab los ntawm siab - cua nrawm thiab sib txuas los ntawm thermal calendaring. Cov txheej txheem no muab cov khoom siv dag zog (tuag tsis kam, ua kom puas), deg smoothness, thiab softness.

Nruab nrab Txheej (Meltblown Txheej)

Cov txheej no muaj cov ultra-polypropylene fibers zoo (1-5 microns hauv txoj kab uas hla), uas yog qhov zoo dua li spunbond fibers. Cov txheej txheem cuam tshuam nrog extruding molten polymer los ntawm spinnerets, qhov twg nws yog stretched los ntawm siab - cua kub ceev mus rau ultra- fibers zoo uas randomly tsim ib tug ntom mesh qauv. Cov txheej no ua haujlwm raws li lub hauv paus tiv thaiv kev tiv thaiv, ua tiav cov txiaj ntsig zoo (cov kab mob, cov khoom, cov kua dej) los ntawm kev thaiv lub cev thiab electrostatic adsorption.

Cov txheej txheem sib xyaw

Ib txoj kev yog thermal bonding, qhov twg peb txheej yog nias thiab rhuab los ntawm calender rollers, ua rau ib nrab melting thiab bonding ntawm cov fibers. Lwm txoj kev yog ultrasonic welding, uas siv siab - zaus vibrations los ua kom sov rau kev sib txuas cov khaubncaws sab nraud povtseg yam tsis muaj qhov cua sov sab nraud, ua rau nws haum rau cov ntaub ntawv nyias.

Kev tsim cov txheej txheem ntawm SMS Nonwoven Fabric

Spunbond Txheej Ntau Lawm

Ua ntej, polypropylene pellets yog melted nyob rau hauv ib tug ntsia hlau extruder (kub: kwv yees li 230-250 degree). Tom ntej no, cov molten polymer yog extruded los ntawm spinnerets los tsim cov kwj deg, uas yog txias thiab ncab mus rau hauv cov filaments tas mus li. Thaum kawg, cov filaments tau muab tso rau hauv ib lub vas sab los ntawm lub tshuab xaim fiber ntau.

Meltblown Txheej Ntau Lawm

Ua ntej, cov molten polymer yog extruded los ntawm spinnerets thiab instantly ncab mus rau hauv micron - fibers loj los ntawm siab - cua kub ceev (300-400 degree) los ntawm ob sab. Cov fibers no ces randomly faib rau ib tug sau ntaus ntawv, tsim ib tug ntxeem tau tsis tau ntom mesh qauv.

Composite thiab Post-Kev ua tiav

Cov spunbond, meltblown, thiab spunbond txheej yog sib txuas thiab sib txuas los ntawm thermal calendering lossis ultrasonic vuam. Cov khoom siv ntxiv xws li cov tshuaj tua kab mob (xws li nyiaj ions), cov tshuaj tiv thaiv kab mob, lossis cov txheej txheem hydrophobic tuaj yeem muab tso ua ke los txhim kho cov khoom zoo li kev tiv thaiv dej.

Daim ntawv thov

1. Kev Tiv Thaiv Kev Kho Mob

Cov khaub ncaws tiv thaiv kev kho mob: Siv cov khoom siv SMS nrog lub hauv paus hnyav ntawm 40-50 g / m², ua raws li tus qauv GB 19082-2009, txhawm rau tiv thaiv cov ntshav thiab lub cev nkag mus rau hauv lub cev (xws li, siv thaum muaj Ebola thiab COVID-19 tshwm sim).

Cov qhov ncauj qhov ntswg phais: Cov txheej hauv nruab nrab meltblown muab cov kab mob pom kev ua haujlwm zoo (BFE) ntawm Ntau dua lossis sib npaug li 95%, thaum txheej txheej txheej spunbond muaj cov dej tsis haum.

2. Cov khoom siv tu cev

Cov ntaub qhwv rov qab: Siv cov khoom siv SMS nrog lub hauv paus hnyav ntawm 10-20 g / m², ua ke ua pa thiab ua haujlwm tsis zoo (piv txwv li, hom xws li Pampers thiab Huggies).

Cov khoom siv tu cev poj niam: Hloov cov yeeb yaj kiab PE ib txwm siv los txo cov cua sov thiab txhim kho kev nplij siab.

3. Cov ntawv thov kev lag luam

Plua plav- cov khaub ncaws pov thawj: Siv hauv cov chaw tsim khoom siv hluav taws xob thiab chav huv huv los tiv thaiv tib neeg cov tawv nqaij kom tsis txhob kis cov cuab yeej precision.

Roj pom: Siv nyob rau hauv kev lag luam automotive adsorb lubricant pos huab (siab -SMS zog nrog lub hauv paus hnyav ntawm 80-100 g / m²).

Kev sib piv ntawm SMS Nonwoven Fabric nrog rau lwm cov ntaub ntawv

Kev ua lag luam xwm txheej thiab cov qauv ntawm SMS Nonwoven Fabric

Kev Lag Luam Loj: Lub ntiaj teb SMS nonwoven npuag kev lag luam muaj nqis kwv yees li $ 4.5 nphom hauv xyoo 2023, nrog rau kev kho mob suav txog ntau dua 60% (Source: Smithers Report).

Kev faib tawm hauv cheeb tsam: Tuam Tshoj yog tus tsim khoom loj tshaj plaws (40% ntawm lub peev xwm thoob ntiaj teb), ua raws li Asmeskas thiab Europe.

Kev cuam tshuam thoob ntiaj teb: Thaum lub sij hawm COVID-19, kev thov rau kev kho mob- qib SMS tau nce 300%, ua rau kev xa mus sai ntawm ntau cov kab ntau lawm.