Multilayer coextrusion zaj duab xis
Hais txog kev qhia txog cov chaw tsim khoom, cov lus hais, MOQ, kev xa khoom, kuaj dawb, kos duab tsim, nqe lus them nqi, kev pab cuam tom qab muag thiab lwm yam. Thov nyem FAQ kom muaj tag nrho cov lus teb koj xav paub.
Nyem FAQsQingdao Advanmatch Ntim's multi-layer co-extruded composite film feem ntau muab faib uatxheej txheej, txheej txheej thiab nplaum txheej raws li kev ua haujlwm ntawm txhua txheej ntawm zaj duab xis tsis hais txog cov txheej txheem ntau npaum li cas.
Base txheej: Feem ntau, cov txheej sab hauv thiab txheej txheej ntawm cov zaj duab xis sib xyaw uas yuav tsum muaj cov khoom zoo ntawm lub cev thiab cov khoom siv, molding thiab kev ua haujlwm thiab thermal sealing txheej.Nws muaj kev ua haujlwm zoo thaum tshav kub kub-sealing kev ua tau zoo thiab kev ua haujlwm ntawm cov cua sov nrog tus nqi qis.Lub caij no, nws kuj muaj kev txhawb nqa zoo thiab tuav tau zoo ntawm cov txheej txheem ua haujlwm thiab qhov kev faib ua feem ntau tshaj plaws hauv cov khoom sib xyaw uas txiav txim siab tag nrho cov rigidity ntawm cov ntaub ntawv sib xyaw.Cov khoom siv hauv paus yog PE, PP, EVA, PET thiab PS.
Functional txheej:Lub coextrusion haumxeeb txheej ntawm ntim zaj duab xis yog feem ntau barrier txheej, uas feem ntau yog nruab nrab ntawm multi-layer composite zaj duab xis.Nws tsuas yog siv cov khoom siv barrier xws li EVOH, PVDC, PVA, PA, PET, thiab lwm yam. Ntawm lawv, feem ntau siv cov ntaub ntawv thaiv siab yog EVOH thiab PVDC, thiab cov khoom siv PA thiab PET muaj cov khoom thaiv zoo sib xws, yog cov khoom siv nruab nrab barrier. .
EVOH
Ethylene-vinyl cawv copolymer yog ib yam khoom siv polymer uas sib xyaw ua ke ntawm ethylene polymer thiab roj barrier ntawm ethylene cawv polymer.Nws yog pob tshab heev thiab muaj gloss zoo.EVOH muaj kev tiv thaiv zoo tiv thaiv roj thiab roj.Nws lub zog txhua yam, yoog raws, hnav tsis kam, txias ua haujlwm thiab lub zog saum npoo yog zoo heev thiab nws muaj kev ua haujlwm zoo heev.Lub barrier khoom ntawm EVOH nyob ntawm cov ntsiab lus ntawm ethylene.Cov khoom ntim nrog EVOH cov ntaub ntawv muaj xws li condiments, khoom noj siv mis, khoom noj nqaij, cheese khoom, thiab lwm yam.
PVDC
Polyvinylidene chloride yog ib qho polymer ntawm vinylidene chloride (1,1-dichloroethylene).Lub decomposition kub ntawm homopolymer polyvinylidene chloride yog qis dua nws melting point, yog li nws nyuaj rau yaj.Yog li ntawd, PVDC raws li cov khoom ntim khoom yog copolymer ntawm vinylidene chloride thiab vinyl chloride uas muaj roj zoo nruj, corrosion kuj, zoo luam ntawv thiab kub-sealing yam ntxwv.Thaum pib, nws yog siv los ntim cov tub rog.Tab sis nws tau pib siv los ua yeeb yaj kiab khaws cia hauv xyoo 1950.Tshwj xeeb tshaj yog qhov ceev-freezing thiab tshiab-khaws ntim uas tau tsim nyob rau hauv ntau qhov ntau nrog acceleration ntawm niaj hnub ntim tshuab thiab lub pace ntawm niaj hnub neeg lub neej, lub kiv puag ncig ntawm microwave cookers thiab extension ntawm lub txee lub neej ntawm cov zaub mov thiab tshuaj uas ua rau lub rhawv zeb. daim ntawv thov ntawm PVDC nrov dua.PVDC tuaj yeem ua rau hauv cov yeeb yaj kiab nyias nyias, yog li txo cov khoom siv raw thiab cov nqi ntim khoom, Nws tseem yeej niaj hnub no.
Adhesive txheej
Vim yog qhov tsis zoo ntawm qee cov khoom siv hauv paus thiab cov txheej txheem ua haujlwm, nws yog ib qho tsim nyog yuav tsum tso qee cov nplaum nplaum ntawm ob txheej no los ua lub luag haujlwm ntawm cov kua nplaum, thiaj li tsim tau "kev sib xyaw" zaj duab xis.Cov nplaum nplaum siv cov nplaum nplaum, feem ntau siv yog txiv neej anhydride grafted polyolefin thiab ethylene-vinyl acetate copolymer (EVA).
Multi-layer co-extruded zaj duab xis yam ntxwv:
1. High barrier khoom: Kev siv ntau txheej polymer hloov monolayer polymerization tuaj yeem txhim kho cov cuab yeej barrier ntawm zaj duab xis thiab ua tiav cov txiaj ntsig siab ntawm cov pa oxygen, dej, carbon dioxide, tsw, thiab lwm yam tshwj xeeb tshaj yog thaum EVOH thiab PVDC raug xaiv raws li cov ntaub ntawv thaiv, lawv cov pa oxygen thiab dej vapor kis tau zoo yog qhov tsawg heev.
2. Muaj zog muaj nuj nqi: Vim muaj kev xaiv dav ntawm cov yeeb yaj kiab multilayer hauv kev siv cov ntaub ntawv, ntau yam resins tuaj yeem xaiv raws li kev siv cov ntaub ntawv muaj txiaj ntsig zoo uas muaj kev cuam tshuam txog kev ua haujlwm ntawm ntau theem, txhawm rau txhim kho kev ua haujlwm ntawm co. -extrusion zaj duab xis, xws li roj tsis kam, noo noo tsis kam, kub ua noj ua haus tsis kam, tsis kub txias txias tsis kam.Nws tuaj yeem siv rau lub tshuab nqus tsev, ntim khoom tsis muaj menyuam thiab ntim khoom ntim.
3. Tus nqi qis: Piv nrog cov iav ntim, cov ntawv ntim aluminium ntawv ci thiab lwm yam ntim yas tuaj yeem ua tiav cov nyhuv thaiv.Nyob rau tib lub sijhawm, co-extruded zaj duab xis muaj qhov zoo dua ntawm tus nqi.Piv txwv li, txhawm rau ua tiav cov txiaj ntsig zoo ib yam, xya-txheej co-extruded zaj duab xis muaj qhov zoo dua ntawm tus nqi ntau dua li tsib-txheej co-extruded zaj duab xis.Vim nws qhov yooj yim fabrication, tus nqi ntawm cov khoom siv ua yeeb yaj kiab tuaj yeem raug txo los ntawm 10-20% piv nrog cov nqi ntawm cov khoom sib xyaw qhuav thiab lwm cov yeeb yaj kiab sib xyaw.
4. Kev tsim qauv yooj yim: txais kev tsim qauv sib txawv kom tau raws li qhov kev lees paub zoo ntawm cov khoom sib txawv.
