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Dab tsi yog qhov sib txawv ntawm peb-txheej, tsib-txheej, xya-txheej thiab cuaj-txheej coextrusion films

Cov khoom ntim tau yooj yim, feem ntau muaj peb, tsib, xya, cuaj txheej ntawm zaj duab xis.Dab tsi yog qhov txawv ntawm cov khaubncaws sab nraud povtseg ntawm cov yeeb yaj kiab?Daim ntawv no tsom rau kev tsom xam, rau koj siv.

Kev sib piv ntawm 5 txheej thiab 3 txheej

Txheej txheejnyob rau hauv tsib txheej qauv feem ntau yog nyob rau hauv lub tub ntxhais, uas insulates nws los ntawm cov dej nyob rau hauv cov huab cua.Vim tias txheej txheej thaiv yog nyob rau hauv cov tub ntxhais, lwm cov ntaub ntawv tuaj yeem siv los txhim kho kev ua haujlwm zoo.Nylon tuaj yeem siv rau hauv cov txheej txheem tseem ceeb, kom cov txheej txheem 5-txheej nrog PE txheej txheej tuaj yeem cuam tshuam nrog ntau cov ntaub ntawv zoo li PE zaj duab xis thiab txhim kho cov txheej txheem muaj peev xwm.Ntxiv mus, lub processor tuaj yeem siv cov xim nyob rau hauv txheej txheej yam tsis muaj kev cuam tshuam rau cov txheej txheem kev sib txuas lossis txheej txheej thaiv.

Peb txheej zaj duab xis, tshwj xeeb tshaj yog cov neeg siv nylon, zoo li curl vim muaj cov khoom sib txawv ntawm lub cev hauv cov qauv asymmetric.Rau 5-txheej txheej, nws yog ntau dua los siv symmetrical los yog ze symmetric qauv kom txo curl.Lub crimp hauv 3-txheej txheej tuaj yeem tswj tau los ntawm kev siv nylon copolymer.Hauv 5-txheej txheej, tsuas yog thaum lub processor siv tau nylon 6 tuaj yeem ua tau kom tau ib txheej nylon txog ib nrab ntawm cov tuab ntawm peb txheej.Qhov no txuag cov nqi raw khoom thaum muab tib yam khoom thaiv thiab txhim kho cov txheej txheem.

Kev sib piv ntawm 7th pem teb thiab 5th pem teb

Rau siab barrier films,EVOHfeem ntau yog siv los ua txheej txheej thaiv los hloov nylon.Txawm hais tias EVOH muaj cov khoom tiv thaiv oxygen zoo heev thaum nws qhuav, nws yuav deteriorate sai thaum nws ntub.Yog li ntawd, nws yog ib qho tsim nyog rau compress EVOH rau hauv ob txheej PE hauv 5-txheej txheej txheej kom tsis txhob ya raws.Hauv 7-txheej EVOH qauv, EVOH tuaj yeem muab tso rau hauv ob txheej PE uas nyob ib sab, thiab tom qab ntawd tiv thaiv los ntawm txheej PE txheej.Qhov no zoo heev txhim kho tag nrho cov pa oxygen tsis kam thiab ua rau cov txheej txheem 7-txheej txheem tsis tshua muaj dej noo.

Fragmentation lossis tearing kuj tuaj yeem ua teeb meem rau tsib zaj dab neeg.Txoj kev loj hlob ntawm 7-txheej txheej txheej yuav ua rau cov txheej txheem nyuaj nyuaj sib cais ua ob txheej txheej zoo tib yam los ntawm kev sib txuas cov txheej nyias.Qhov no tuav cov cuab yeej thaiv thaum ua rau lub pob ntau tiv taus kev tawg lossis tawg.Ntxiv mus, cov qauv 7-txheej txheej ua rau cov txheej txheem tsim kua muag cov txheej txheem los txo cov nqi ntawm cov khoom siv raw.Cov polymers kim dua tuaj yeem siv los ua cov khaubncaws sab nraud povtseg, thaum pheej yig dua polymers tuaj yeem hloov feem ntau ntawm cov khaubncaws sab nraud povtseg.

Kev sib piv ntawm 9 pem teb thiab 7th pem teb

Feem ntau, qhov barrier ib feem ntawm lub siab barrier zaj duab xis occupies tsib txheej hauv cov qauv.Vim tias kev nce qib hauv cov khoom siv polymer thiab kev ua haujlwm, feem pua ​​​​ntawm tag nrho cov thickness ntawm qhov no nyob rau hauv tag nrho cov qauv yog tsis tu ncua, tab sis tib yam barrier kev ua tau zoo yog khaws cia.

Txawm li cas los xij, nws tseem yog qhov tsim nyog los tswj cov yeeb yaj kiab tag nrho.Los ntawm 7 txheej mus rau 9 txheej, cov txheej txheem tuaj yeem tau txais cov khoom siv zoo tshaj plaws, cov tsos thiab cov nqi ua haujlwm.Rau cov yeeb yaj kiab siab, qhov ntau yam ntxiv tau muab los ntawm 7-txheej lossis 9-txheej extrusion kab tuaj yeem ua rau muaj txiaj ntsig.Tus nqi nce ntxiv ntawm kev yuav khoom 7-txheej lossis 9-txheej extrusion kab tuaj yeem muaj lub sijhawm them rov qab tsawg dua ib xyoos piv nrog 5-txheej ntau lawm kab.


Post lub sij hawm: Mar-05-2021