Dab tsi yog vim li cas rau kev siv ntau ntawm polypropylene hauv tshuab yaj tshuab?

Lub hauv paus ntsiab lus ntawm meltblown ntaub

Meltblown ntaub yog ib yam khoom uas melts polymers ntawm qhov kub thiab txias thiab ces txau rau hauv fibers nyob rau hauv siab. Cov fibers no sai txias thiab solidify nyob rau hauv cov huab cua, tsim ib tug high-density, high-efficiency fiber network. Cov khoom siv no tsis yog tsuas yog muaj kev lim dej zoo xwb, tab sis kuj yog lub teeb yuag thiab ua pa, ua rau nws tsim nyog siv rau hauv cov khoom siv tiv thaiv xws li lub qhov ncauj qhov ntswg.

Lub ntsiab raw khoom rau meltblown fabrics

Cov khoom siv tseem ceeb rau cov ntaub nplaum yog polypropylene, feem ntau hu ua PP khoom. Tam sim no, ntau cov ntaub npog ntsej muag ntawm lub khw siv polypropylene meltblown ntaub ua cov khoom siv lim. Qhov laj thawj ntawm kev xaiv polypropylene ua cov khoom siv tseem ceeb yog tias nws muaj kev ua haujlwm zoo thiab tus nqi zoo, thiab yog ib puag ncig zoo.

Ntxiv rau polypropylene, meltblown fabrics kuj tuaj yeem ua los ntawm lwm cov ntaub ntawv xws li polyester, nylon, linen, thiab lwm yam. Txawm li cas los xij, piv rau polypropylene, cov ntaub ntawv no muaj cov nqi siab dua lossis kev ua haujlwm tsis zoo, ua rau lawv tsis haum rau cov khoom loj.

Polypropylene yog dav siv nyob rau hauv yaj tshuab tshuab vim nws muaj cov nram qab no zoo

1. Lub viscosity ntawm cov polymer tuaj yeem tswj tau los ntawm kev siv oxidants lossis peroxides hauv cov txheej txheem extrusion, los yog los ntawm mechanically shearing lub extruder los yog tswj kev ua hauj lwm kub kom ua tau thermal degradation, thiaj li tswj cov viscosity ntawm cov yaj.

2. Lub molecular hnyav tis tuaj yeem tswj tau los ntawm cov txheej txheem yaj uas tsis yog-woven npuag, uas yuav tsum tau nqaim molecular hnyav faib thiaj li tsim tau cov fibers ultrafine. Los ntawm kev siv cov thev naus laus zis tshiab xws li metallocene catalysts, polymers nrog qhov ntsuas kub siab heev thiab nqaim molecular hnyav faib tuaj yeem tsim tau.

3. Lub ntsiab lus melting ntau dua yog qhov txaus rau cov cua sov ua haujlwm ntawm polypropylene rau feem ntau cov khoom siv, thiab nws muaj ntau hom molten propylene. Scope, yog li ntawd, yog qhov zoo heev rau kev siv thermal bonding ua hauv cov tshuab tsis-woven.

4. Nws yog qhov zoo los tsim cov fibers ultrafine. Yog hais tias lub viscosity ntawm polypropylene yaj yog tsawg thiab qhov hnyav molecular faib yog nqaim, nws tuaj yeem ua rau cov fibers zoo heev nyob rau hauv tib lub zog noj thiab ncab cov xwm txheej hauv cov txheej txheem yaj. Yog li ntawd, cov fiber ntau txoj kab uas hla ntawm polypropylene yaj uas tsis yog-woven npuag yog 2-5um, los yog txawm finer.

5. Vim yog kev siv cov cua kub cua kub siab hauv cov txheej txheem yaj, nws yuav tsum tau siv cov polymers nrog cov melting Performance index siab dua, uas muaj txiaj ntsig zoo rau kev tsim khoom thiab txo kev siv zog. Tam sim no, feem ntau siv polypropylene chips muaj ib tug yaj Performance index ntawm 400-1200g / 10min thiab nqaim molecular hnyav tis los tsim ultrafine fibers nrog rau qhov yuav tsum tau linear ceev.

6. Cov chips polypropylene siv nyob rau hauv yaj tshuab ntau lawm thiab ua yuav tsum muaj ib tug siab thiab uniform yaj Performance index, nqaim molecular hnyav tis, zoo yaj tshuab ua cov yam ntxwv, thiab uniform thiab ruaj khov nti zoo los xyuas kom meej cov txheej txheem stability ntawm yaj tshuab nonwoven cov ntaub ntawv.

Kev ceev faj rau kev tsim cov ntaub meltblown

Hauv cov txheej txheem ntawm kev ua cov ntaub meltblown, cov ntsiab lus hauv qab no yuav tsum tau sau tseg:

1. Kev xaiv cov khoom siv yuav tsum muaj qhov ntshiab txaus: Raws li cov ntaub meltblown yuav tsum tau dais cov nyhuv lim, nws yog ib qho tsim nyog yuav tau xaiv cov khoom uas muaj ntshiab txaus thaum xaiv cov khoom siv raw. Yog tias muaj ntau dhau impurities, nws yuav cuam tshuam rau kev pom kev ua haujlwm ntawm cov ntaub meltblown.

2. Tswj kev ua haujlwm kub thiab siab: Kev ua haujlwm kub thiab siab yuav tsum tau teeb tsa raws li cov khoom siv raw los xyuas kom meej qhov ua tau zoo ntawm fiber ntau txoj kev.

3. Ua kom muaj kev nyiam huv hauv qhov chaw tsim khoom: Raws li cov ntaub meltblown yog siv los tsim cov khoom siv tiv thaiv xws li lub qhov ncauj qhov ntswg, kev nyiam huv hauv qhov chaw tsim khoom yog qhov tseem ceeb heev. Nws yog ib qho tsim nyog los xyuas kom meej qhov huv ntawm lub rhiav kev tsim khoom kom tsis txhob kis cov khoom.

Dongguan Liansheng Nonwoven Technology Co., Ltd.tau tsim nyob rau hauv lub Tsib Hlis 2020. Nws yog ib tug loj-scale non-woven npuag ntau lawm enterprise integrating kev tshawb fawb thiab kev loj hlob, ntau lawm, thiab muag khoom. Nws tuaj yeem tsim ntau yam xim ntawm PP spunbond non-woven fabrics nrog qhov dav ntawm tsawg dua 3.2 meters los ntawm 9 grams mus rau 300 grams.