Cov khoom ntim yas thiab cov khoom ntim yas tau tuav ntau thiab ntau lub lag luam sib koom, tshwj xeeb tshaj yog cov khoom ntim yas sib xyaw ua ke, uas tau siv dav hauv cov zaub mov, kev kho mob, thiab tshuaj lom neeg kev lag luam. Ntawm lawv, ntim khoom noj rau feem pua ntawm ntau tshaj plaws, xws li cov dej haus. Ntim, ntim khoom noj ceev ceev, ntim khoom noj, ntim khoom noj ceev, thiab lwm yam, cov khoom no tau coj kev yooj yim rau tib neeg txoj sia.
Biaxially oriented polypropylene zaj duab xis yog tsim los ntawm co-extruding polypropylene hais los ua ib daim ntawv, thiab ces ncab lawv nyob rau hauv ob deflection cov lus qhia. Vim yog kev taw qhia ntawm cov khoom siv stretched, zaj duab xis no muaj lub cev ruaj khov zoo, lub zog txhua yam, huab cua, pob tshab, thiab siab gloss, muaj zog thiab hnav -resistant. Nws yog feem ntau siv tshuab luam ntawv tam sim no, thiab nws cov tuab feem ntau yog 20 ~ 40 μ m, feem ntau daim ntawv thov yog 20 μ m. Qhov tsis zoo ntawm biaxed-taw qhia cov yeeb yaj kiab polypropylene yog qhov tsis zoo thaum tshav kub kub sealing, yog li nws feem ntau yog siv los ua cov yeeb yaj kiab sab nrauv ntawm cov yeeb yaj kiab sib xyaw. Piv txwv li, nws yog qhov zoo tagnrho rau cov dej tsis kam, pob tshab, lub zog, rigidity, thiab printability raws li nws yog tsim nrog polyethylene zaj duab xis. Lawv muaj cov khoom noj qhuav. Vim hais tias cov tsos ntawm biaxed{12}} taw qhia polypropylene zaj duab xis yog nonpolar, crystallinity siab, thiab lub zog dawb ntawm qhov tsos yog tsawg. Yog li ntawd, nws cov ntawv luam tawm tsis zoo, thiab cov kua nplaum thiab cov nplaum nplaum tsis zoo. Nws yog ib qho tsim nyog kom tau txais cov tsos ua ntej luam ntawv thiab laminating. Deal nrog rau txim.
Tsawg-cov yeeb yaj kiab polyethylene feem ntau yog tsim los ntawm cov txheej txheem casting thiab casting. Lub thickness ntawm molded polyethylene zaj duab xis yog symmetrical, tab sis vim yog tus nqi siab, nws tsis tshua muaj siv tam sim no. Tshuab moulded polyethylene zaj duab xis yog tshuab los ntawm PE qib particles molded los ntawm lub tshuab molding. Tus nqi qis, yog li nws yog qhov nrov tshaj plaws. Tsawg-polyethylene zaj duab xis yog ib qho translucent, ci thiab mos zaj duab xis. Nws muaj tshuaj lom neeg ruaj khov zoo heev, kub sealing, dej thiab noo noo tsis kam, khov tsis kam, thiab tuaj yeem ua rau boiled. Nws qhov tsis zoo yog tias nws tsis muaj oxygen cais tawm. Nws feem ntau yog siv rau hauv cov yeeb yaj kiab sab hauv ntawm cov khoom siv ntim khoom sib xyaw ua ke. Nws tseem yog qhov siv ntau tshaj plaws thiab ntau tshaj plaws ntawm cov yas ntim zaj duab xis tam sim no, suav txog li 40% ntawm kev siv cov yas ntim zaj duab xis. .
Vim hais tias cov polyethylene molecule tsis muaj pawg polar thiab muaj crystallinity siab thiab tsis tshua muaj zog tsis pom, cov yeeb yaj kiab muaj kev ua haujlwm tsis zoo thiab tsis zoo adhesion rau inks thiab adhesives, yog li nws yog ib qho tsim nyog ua ntej luam ntawv thiab lamination yuav raug nplua ntawm cov duab ua.
Yog li ntawd, polyester zaj duab xis yog ua los ntawm polyethylene terephthalate, uas yog ua rau cov nplooj ntawv tuab los ntawm extrusion thiab ces stretched biaxially. Nws yog xim tsis muaj xim, pob tshab, ci zaj duab xis nrog cov khoom siv zoo heev, siab rigidity, hardness thiab durability, puncture tsis kam, abrasion tsis kam, kub thiab kub tsis kam, tshuaj tsis kam, roj kuj, huab cua thiab tsw, nws yog ib qho ntawm feem ntau siv barrier composite zaj duab xis substrates. Tab sis tus nqi ntawm polyester zaj duab xis yog qhov siab, feem ntau nrog lub thickness ntawm 12 hli. Nws yog feem ntau siv raws li txheej txheej ntawm retort ntim thiab muaj zoo printability.
Nylon zaj duab xis yog ib zaj duab xis muaj zog heev nrog cov pob tshab zoo, lub teeb zoo, lub zog tensile siab, siab tensile lub zog thiab zoo kub tsis kam, txias tsis kam, roj tsis kam thiab tsis kam mus rau cov kuab tshuaj organic. Kev tiv thaiv zoo heev, puncture tsis kam thiab softness, zoo heev oxygen barrier, tab sis tsis zoo dej vapor rwb thaiv tsev, siab noo noo nqus thiab noo permeability, tsis zoo cua sov sealing, haum rau ntim cov khoom nyuaj, piv txwv li cov khoom noj rog, nqaij, khoom noj kib, nqus tsev vacuum- cov khoom noj khoom haus, steamed zaub mov, thiab lwm yam.
Moulded polypropylene zaj duab xis yog polypropylene zaj duab xis uas tsim los ntawm cov txheej txheem molding. Nws tuaj yeem muab faib ua CPP li niaj zaus thiab ua noj -qib CPP. Nws muaj cov pob tshab zoo heev, cov tuab tuab, thiab cov kab ntev ntev thiab kev ua haujlwm transverse. Nws feem ntau yog siv los ua cov yeeb yaj kiab sab hauv. Txheej khoom. Lub thickness ntawm zoo tib yam CPP zaj duab xis yog feem ntau ntawm 25-50μm. Thaum ua ke nrog OPP, lub pob tshab yog qhov zoo, qhov zoo li ci, thiab txhais tes zoo li muaj zog. Zak tas
