Txhawm rau txuas lub txee lub neej ntawm cov tshuaj xws li khoom noj thiab cov tshuaj, ntau yamNtim KhoomRau cov zaub mov thiab cov tshuaj tam sim no siv ntau txheej ntim ntim cov yeeb yaj kiab multip. Tam sim no, muaj ob, peb, tsib, tsib, cuaj, thiab txawm tias kaum ib txheej ntim ntim ntim. Ntau daim duab ntim ntim yog ib zaj yeeb yaj kiab nyias nyias tsim los ntawm extruding ntau cov ntaub ntawv yas ua ke los ntawm ib lub pwm qhib, uas tuaj yeem rub tawm cov txiaj ntsig ntawm cov khoom sib txawv
Zov TxheejNtim zaj duab xis yobyog tsuas yog ua tiav ntawm polyolefin ua ke. Tam sim no, cov qauv siv feem ntau suav nrog: polyethylene txheej / evoh / nplaum txheej / evoh / adhesive txheej / LDPE. Lub thickness ntawm txhua txheej tuaj yeem hloov kho los ntawm kev rho tawm thev naus laus zis. Los ntawm kev kho cov tuab ntawm cov txheej txheem teeb tsa thiab siv ntau yam khoom siv thaiv, hloov tau yooj yim nrog cov khoom sib txawv nrog cov teeb meem sib txawv tuaj yeem tsim. Cov tshav kub ntim cov txheej txheej tseem tuaj yeem hloov thiab hloov kho kom tau raws li qhov xav tau ntawm kev ntim khoom sib txawv. Qhov ntau-txheej thiab multifunctional ntim ntim ntim tau ntau yog cov kev taw qhia tseem ceeb rau kev txhim kho ntawm kev ntim cov khoom siv zaj duab xis nyob rau yav tom ntej.
Zov txheej ntim ntim cov qauv ntim ntau daim duab ua teb
Ntau txheej ntim ntim ntau daim duab dhos, tsis hais txog cov khaubncaws sab nraud povtseg, feem ntau muab faib ua txheej txheej, thiab nplaum txheej, thiab cov nplaum txheej txheej ntawm txhua txheej ntawm zaj duab xis.
Theem theem
Feem ntau, sab hauv thiab sab hauv cov duab sib xyaw yuav tsum muaj cov khoom siv lub cev thiab cov neeg kho tshuab, ua kev ua tiav, thiab kev sib tw tshav kub. Nws kuj yuav tsum muaj kev ua tau zoo cua sov kev ua tau zoo thiab kev ua kom zoo nkauj, muaj kev ua haujlwm tsawg nyob hauv cov yeeb yaj kiab sib xyaw, txiav txim siab cov kev sib dhos zoo ntawm cov yeeb yaj kiab sib xyaw. Cov ntaub ntawv hauv paus yog feem ntau PE, PP, EVA, TSIAJ, thiab PS.
Ua Haujlwm Txheej
Lub cev ua haujlwm ntawmKhoom Noj Khoom Haus Ntim Zaj Duab XisFeem ntau yog ib txheej thaiv, feem ntau nyob hauv nruab nrab ntawm ntau-multi-etc, pv, pev, pv, pev, pev, pv, pev, pev, pv, pev, pev, pev, pev, pev, pev, pev, pev, pev, pev, pev, pev, pev, pev, pev, pev, pev, pev, pev, pev, pev, pev, pev, pev, pev, pev, pev, pev, pev, pev, pev, pev, pev, pev, pev, pev, pev, pev, pev, pev, pev, pev, pev, pev, pev, pev, pev, pv, pev, pev, pev, pev, pev, pev, pev, pev, pev, pev, pev, pev, pv, pev, pev, tus tsiaj muaj cov teeb meem zoo sib xws, koom nrog nruab nrab cov ntaub ntawv.
Evoh (ethylene vinyl cawv copolymer)
Ethylene Vinyl Haus Copolymer yog cov khoom siv polymer uas muaj cov txheej txheem ethylene thiab cov pa roj av ntawm ethylene cawv polymers. Nws yog pob tshab thiab muaj qhov zoo gloss. Evoh muaj cov teeb meem zoo heev rau cov roj av thiab roj, nrog kev tiv thaiv zoo, txias kuj, thiab ua tiav kev ua tau zoo. Qhov kev ua tau zoo ntawm evoh nyob ntawm cov ethylene cov ntsiab lus. Thaum lub ethylene nce, lub paflation kev kawm poob qis, tab sis cov noo noo tsis kam ua tau nce, thiab nws yooj yim rau cov txheej txheem.
Cov khoom lag luam ntim nrog Evoh ntaub ntawv suav nrog cov seasonings, cov khoom noj mis nyuj, nqaij khoom, cheese khoom, thiab lwm yam.
PVDC (polyvinylidene chloride)
Polyvinylidide (PVDC) yog cov polymer ntawm vinylidene chloride (1,1-dichloroethylene). Lub decomposition kub ntawm homopolymer PVDC yog qis dua nws lub ntsej muag melting, ua rau nws nyuaj rau yaj. Yog li ntawd, raws li ntim khoom, PVDC yog copolymer ntawm vinylidene chloride, uas muaj cov orrooride, corrosion tsis kam, luam ntawv zoo thiab cov tshuab hluav taws xob zoo.
Nyob rau hauv thaum ntxov hnub, nws yog tsuas yog siv rau kev ntim tub rog. Hauv xyoo 1950, nws tau pib siv los ua cov khoom noj khoom haus cov khoom noj thiab kev txuas ntxiv rau cov khoom noj thiab cov txee kev txuas ntxiv, thiab cov tshuaj yeeb dawb thiab cov tshuaj tua hluav taws xob tau ua daim PVDC nrov dua. PVDC tuaj yeem ua rau hauv ultra-nyias zaj duab xis, txo tus nqi ntawm cov ntaub ntawv raw thiab cov roj yuav khoom. Nws tseem nrov niaj hnub no
Adhesive Txheej
Vim yog cov tsis zoo nyob nruab nrab ntawm qee lub hauv paus pib ua haujlwm thiab tsim nyog los tso qee cov txheej txheem nplaum ntawm ob txheej kom ua raws li cov yeeb yaj kiab sib xyaw. Cov txheej txheem nplaum siv cov nplaum nplaum nplaum, siv cov duab nplaum muaj xws li polyolefin grafted nrog txiv neej anhydride thiab ethylene vinyl acetate copolymer (EVA).
Txiv neej Muav Quav GraDrime polyolefins
Txiv neej muaj anhydride grafted polyolefin yog tsim los ntawm grafting txiv neej anhydride rau kev thim rov qab, SAB SAB SAB PAB pab pawg ntawm cov saw hlau tsis-polar. Nws yog cov nplaum ntawm cov nplaum hauv ncov qaumteb qab zib thiab cov ntaub ntawv tsis muaj nyob hauv cov yeeb yaj kiab ntawm polycepefins xws li polypropylene thiab nylon.
Eva (Ethylene Vinyl acetate Copolymer)
Eva qhia txog Vinyl acetate monomer rau hauv cov molecular, txo cov crystallinity ntawm polyethylene thiab txhim kho cov solubility thiab thermal sealing kev ua haujlwm ntawm fillers. Cov ntsiab lus sib txawv ntawm cov tshuaj ethylene thiab vinyl acetate hauv cov ntaub ntawv ua rau cov ntawv thov sib txawv:
① Cov khoom tseem ceeb ntawm Eva nrog ethylene acetate cov ntsiab lus hauv qab 5% yog cov nplaum, cov yeeb yaj kiab, cov xov hlau thiab cab;
② Cov khoom tseem ceeb ntawm Eva nrog cov ntsiab lus vinyl acetate cov ntsiab lus ntawm 5% ~ 10% yog cov yeeb yaj kiab tseem ceeb, thiab lwm yam;
③ Cov khoom tseem ceeb ntawm EVA nrog cov ntaub ntawv vinyl acetate cov ntsiab lus ntawm 20% ~ 28% yog kub yaj cov khoom nplaum thiab cov khoom txheej txheej;
④ Cov khoom tseem ceeb ntawm Eva nrog cov ntsiab lus vinyl acetate cov ntsiab lus ntawm 5% ~ 45% yog cov yeeb yaj kiab (suav nrog cov khoom ua liaj ua teb ua liaj ua teb, thiab lwm yam khoom, thiab lwm yam.
Lub sij hawm Post: Jun-12-2024