Hauv kev ua yeeb yaj kiab, ib yam ntawm cov khoom siv raw yog extruded mus rau lwm hom yeeb yaj kiab uas tau ua los yog mus rau ntau hom yeeb yaj kiab uas tau ua thiab nplaum yog siv los sib txuas ua ke los tsim cov yeeb yaj kiab multilayer.Cov khoom no hu ua composite films.Co-extruded zaj duab xismuaj feem ntau ntawm cov yam ntxwv ntawm cov zaj duab xis sib xyaw, tab sis muaj ib qhov sib txawv, uas yog, tag nrho cov txheej txheem ntawm co-extruded zaj duab xis yog extruded tib lub sij hawm, thiab cov khaubncaws sab nraud povtseg yog bonded los ntawm kub melting yam tsis muaj txheej txheem lamination.
Cov khoom siv ntawm cov zaj duab xis yog feem ntau yog yas, tab sis daim ntawv, hlau ntawv (feem ntau yog txhuas) los yog ntaub kuj siv tau.Tag nrho cov txheejco-extruded zaj duab xisyog extruded tib lub sij hawm, yog li yuav tsis muaj txhuas ntawv ci, ntawv thiab lwm yam ntaub ntawv uas tsis yog yas.
Multi-txheej co-extrusion barrier membrane yog ib tug haumxeeb zaj duab xisua los ntawm kev siv ntau yam extruders los extrude cov resin nrog siab barrier kev ua tau zoo thiab yaj ntawm lwm yam resins los ntawm ib tug ntau tuag.Multi-layer co-extrusion composite yog cov txheej txheem kev tsim khoom ntsuab ntsuab, tshwj xeeb tshaj yog rau kev lag luam ntim khoom noj tam sim no, cov khoom siv raw siv feem ntau yog cov ntaub ntawv pov thawj los ntawm United States Food and Health and Safety Agency, thiab cov ntaub ntawv raw yog uniformly muab rau txhua tus. txheej los ntawm kev thauj mus los tshwj xeeb.Tsis muaj kev cuam tshuam ntawm cov khoom siv raw thiab ib puag ncig muaj kuab paug hauv cov txheej txheem ua.Nws cov txheej txheem xaus yog ua los ntawm kev hloov kho LLDPE raws li cov khoom siv raw, uas tsis muaj tshuaj lom rau ib puag ncig, khoom noj thiab tib neeg lub cev thiab yuav tsis tshwm sim cov tsoos qhuav compound, uas yog, lub npe hu ua hnyav residue tshwm sim, tsis muaj cov pa paug paug;Nws kuj yog qhov sib txawv ntawm kev sib xyaw qhuav, tsis muaj kuab tshuaj tsis muaj kuab lom thiab cov txheej txheem txheej txheej txheej txheej txheej txheej txheej txheem, thiab yuav tsum tau ziab qhov cub rau kev kho mob, yog li lub zog noj kuj tsawg dua.Tsis tas li ntawd, cov txheej txheem ntau txheej co-extrusion sib xyaw kuj muaj qhov zoo hauv qab no.
(1) Tsawg tus nqi ntau txheej co-extrusion txheej txheem siv ntau yam resins nrog ntau lub zog.Tsuas yog ib qho txheej txheem ntawm tshuab moulding tuaj yeem siv los ua cov khoom siv ua yeeb yaj kiab sib xyaw ua ke, uas tuaj yeem txo cov nqi tsim khoom.Tsis tas li ntawd, nws tuaj yeem txo qhov kev ua tau zoo ntawm cov khoom siv raw rau qhov tsawg kawg nkaus thickness, thiab qhov tsawg kawg nkaus thickness ntawm ib txheej tuaj yeem ncav cuag 2 ~ 3 μ m.Nws tuaj yeem txo qhov kev siv cov khoom kim heev, yog li txo cov nqi khoom siv.
(2) Cov txheej txheem ntau txheej txheej co-extrusion tuaj yeem phim ntau yam khoom siv hauv kev sib xyaw ua ke uas ua rau tag nrho cov khoom siv raw nrog cov khoom sib txawv thiab daim ntawv ntawm ib zaug.Nws tsis txwv los ntawm cov khoom lag luam tshwj xeeb ntawm kev ua lag luam thiab tuaj yeem ua tau raws li qhov xav tau ntawm cov ntim sib txawv.Cov khaubncaws sab nraud povtseg ntau, qhov hloov tau yooj yim ntawm cov qauv tsim thiab tus nqi qis dua.
(3) Kev sib xyaw ua haujlwm siab co-extrusion txheej txheem sib xyaw ua ke molten nplaum thiab lub hauv paus cob.Cov txheej txheem no muaj lub zog tev siab uas nws feem ntau mus txog 3N / 15mm lossis ntau dua uas nws tsim nyog rau cov khoom ntim dav dav.Rau cov khoom uas muaj siab tev lub zog yuav tsum tau, thermosensitive resin tuaj yeem muab ntxiv rau kev sib xyaw.Lub caij no, lub zog tev tuaj yeem ncav cuag 14N / 15mm, lossis siab dua.
(4) Ntau txheej txheej co-extruded composite cov khoom tuaj yeem npog yuav luag txhua qhov ntim khoom, suav nrog cov khoom noj, cov khoom siv tshuaj niaj hnub, dej haus, tshuaj, tshuaj tiv thaiv thiab txawm tias cov khoom siv dav hlau.Tam sim no, ntau cov khoom sib xyaw qhuav hauv Suav teb tau txais cov txheej txheem co-extrusion txawv teb chaws.Cov tshuaj txhuam hniav uas tsis tuaj yeem tsim los ntawm cov txheej txheem sib xyaw qhuav.Daim ntawv yas aluminium composite khoom.Aerospace thiab lwm yam khoom lag luam kuj pom tau los ntawm cov txheej txheem co-extrusion.Nrog rau qhov kev tshawb fawb tob tob thiab nruam kev tsim kho tshiab ntawm coextrusion composite resin, thev naus laus zis thiab khoom siv, ntau txheej coextrusion puas yuav nthuav mus rau ntau yam.
Post lub sij hawm: Apr-17-2023