Tshuab zaj duab xis thiab extruded zaj duab xis yog ob qho tib si ntawm kev tsim cov yeeb yaj kiab yas, tab sis lawv txawv ntawm cov txheej txheem uas lawv tsim. Qhov txawv ntawm qhov tseem ceeb yog nyob rau hauv txoj kev uas cov yas yog zoo li tus mus rau hauv ib zaj duab xis.
Kev tsim khoom:
Blown Film: Nyob rau hauv lub tshuab tshuab extrusion txheej txheem, ib tug yas resin yog melted thiab extruded los ntawm ib ncig tuag. Raws li cov yas tawm ntawm qhov tuag, nws yog inflated mus rau hauv ib tug npuas uas siv cua, thiab ces nws yog txias thiab qhuav los ua ib tug ca zaj duab xis. Cov txheej txheem ua rau cov qauv tubular uas tom qab flattened.
Extruded Zaj duab xis: Nyob rau hauv extrusion txheej los yog zaj duab xis ca extrusion, cov yas yaj yog extruded los ntawm ib tug ca tuag, uas ua rau ib daim ntawv tiaj tus ntawm cov yas. Daim ntawv no tuaj yeem ua tiav ntxiv los tsim cov yeeb yaj kiab los ntawm ntau txoj hauv kev, xws li daim ntawv qhia hnub lossis ncab.
Structure thiab yam ntxwv:
Blown Film: Tshuab tshuab feem ntau muaj lub voj voog lossis tubular qauv. Cov duab npuas muab qee qhov zoo, xws li kev faib tawm thickness zoo dua thiab txhim kho cov khoom siv kho tshuab hauv ob qho tib si lub tshuab thiab transverse cov lus qhia.
Extruded Zaj duab xis: Extruded films muaj cov qauv tiaj tus. Lub flatness ntawm zaj duab xis tuaj yeem ua rau nws haum rau qee yam kev siv, thiab nws tuaj yeem pom cov khoom sib txawv ntawm cov khoom sib txawv piv rau cov tshuab cua tshuab.
Orientation thiab Properties:
Blown Film: Cov txheej txheem tshuab cua tshuab inherently imparts ib theem ntawm kev taw qhia rau cov molecules hauv zaj duab xis, tshwj xeeb tshaj yog nyob rau hauv lub tshuab kev taw qhia (MD) thiab transverse direction (TD). Qhov kev taw qhia no tuaj yeem pab txhawb kev txhim kho tensile zog thiab tsim kua muag.
Extruded Zaj duab xis: Nyob ntawm cov kauj ruam tom ntej, cov yeeb yaj kiab extruded tej zaum yuav los yog tsis muaj qhov tseem ceeb molecular orientation. Calendaring, ncab, lossis lwm yam txheej txheem tuaj yeem siv los txhim kho cov khoom tshwj xeeb.
Daim ntawv thov:
Blown Film: Blown films feem ntau yog siv rau hauv daim ntaub ntawv xws li ntim khoom (hnab, liners, shrink films), ua liaj ua teb films, thiab industrial ntim.
Extruded Zaj duab xis: Extruded films pom cov ntawv thov hauv thaj chaw xws li laminating, txheej, thiab cov khoom lag luam. Lawv tuaj yeem siv rau hauv kev ntim khoom yooj yim, luam ntawv, thiab lwm yam kev lag luam.
Thickness Distribution:
Blown Film: Cov txheej txheem cua tshuab feem ntau muab kev tswj xyuas zoo dua ntawm kev faib tawm thickness, ua rau cov yeeb yaj kiab nrog cov tuab tuab dua.
Extruded Zaj duab xis: Ua tiav cov tuab tuab thoob plaws zaj duab xis dav yuav xav tau cov kauj ruam ua haujlwm ntxiv hauv cov yeeb yaj kiab extruded.
