Tus naj npawb ntawm cov khaubncaws sab nraud povtseg thiab cov qauv ntawm cov hnab yas sib xyaw muaj qhov ua tau zoo raws li qhov yuav tsum tau muaj ntawm cov ntawv thov sib txawv. Feem ntau hais lus, lawv yog tsim los ntawm 2 mus rau 7 txheej lossis ntau dua, thiab txhua txheej ua haujlwm tshwj xeeb los xyuas kom meej tias cov khoom muaj qhov yuav tsum tau ua.
1. Txheej txheej (luam txheej / txheej tiv thaiv)
Khoom siv: Cov ntaub ntawv muaj xws li BOPP (biaxially oriented polypropylene), PET (polyethylene terephthalate), thiab lwm yam.
Muaj nuj nqi: Cov txheej txheej sab nrauv yog lub luag haujlwm rau qhov pom ntawm lub hnab thiab tseem ua lub luag haujlwm tiv thaiv. Nws tsis tsuas yog txhawb kev luam ntawv siab kom ua rau lub ntim pom kev zoo nkauj, tab sis kuj muab kev hnav tsis kam tiv thaiv kev puas tsuaj vim kev sib txhuam lossis lwm yam sab nraud. Cov txheej txheej sab nrauv tseem tiv thaiv cov ntawv luam tawm sab hauv los ntawm khawb lossis qhov chaw ntub dej.
Daim ntawv thov: Khoom noj khoom haus, khoom siv txhua hnub thiab cov khoom ntim khoom siv feem ntau yuav tsum muaj qhov zoo nkauj zoo nkauj, yog li cov txheej txheem txheej txheej feem ntau muaj qhov pom zoo thiab luam tawm hloov pauv.
2. Adhesive txheej
Khoom siv: Siv cov nplaum tshwj xeeb xws li cov kua nplaum polyurethane lossis lwm cov nplaum nplaum rau ib puag ncig.
Muaj nuj nqi: Lub luag haujlwm tseem ceeb ntawm txheej txheej no yog kom nruj ua ke sib txawv ua haujlwm txheej. Txij li cov ntaub ntawv sib xyaw feem ntau yog tsim los ntawm ntau yam khoom sib txawv, cov nplaum nplaum ua kom muaj kev sib txuas ntawm cov txheej txheem no thiab tiv thaiv cov ntaub ntawv los ntawm delaminating lossis tev tawm thaum siv.
Daim Ntawv Thov: Hauv kev ntim khoom sib xyaw ua ke, cov nplaum nplaum yog qhov tseem ceeb, tshwj xeeb tshaj yog nyob rau hauv daim ntawv cog lus ntawm txheej txheej thiab txheej txheej.
3. Barrier txheej
Khoom siv: Cov ntaub ntawv muaj xws li txhuas ntawv ci, EVOH (ethylene-vinyl cawv copolymer), PVDC (polyvinylidene chloride), thiab lwm yam.
Muaj nuj nqi: Cov txheej no yog ib qho tseem ceeb tshaj plaws ua haujlwm txheej hauv cov khoom sib xyaw. Nws tsuas yog muab cov khoom thaiv kev tiv thaiv kom tsis txhob nkag mus ntawm huab cua, oxygen, dej vapor thiab lub teeb, yog li ncua lub txee lub neej ntawm cov khoom. Piv txwv li, txheej txheej aluminium ntawv yuav luag tag nrho thaiv lub teeb thiab roj, thaum EVOH muaj cov khoom tiv thaiv oxygen zoo heev.
Daim ntawv thov: Cov khoom siv no yog siv dav hauv cov ntim khoom noj (xws li lub hnab kas fes, hnab mis hmoov) kom ntseeg tau tias cov khoom noj hauv lub pob tsis tuaj yeem ua rau muaj kev sib cuag nrog huab cua thiab noo noo.
4. Nruab nrab txheej
Khoom siv: Feem ntau PA (polyamide, feem ntau hu ua nylon), EVOH thiab lwm yam khoom siv.
Kev Ua Haujlwm: Cov txheej txheem nruab nrab muab lub zog thiab tawv tawv hauv cov khoom sib xyaw, txhim kho lub kua muag thiab puncture tsis kam ntawm lub hnab, tshwj xeeb tshaj yog thaum khaws cov khoom ntse lossis hnyav. PA cov ntaub ntawv paub txog lawv cov khoom zoo heev. Lawv tsis tsuas yog hnav-tiv taus thiab muaj lub zog tensile siab, tab sis kuj muaj kev ywj pheej zoo.
Daim ntawv thov: Feem ntau siv rau hauv ntim uas yuav tsum tau tiv taus siab los yog cov khoom hnyav, xws li cov hnab ntim khoom noj khov lossis cov khoom ntim khoom lag luam.
5. Moisture barrier
Khoom siv: PE (polyethylene), PP (polypropylene), thiab lwm yam.
Kev Ua Haujlwm: Lub luag haujlwm tseem ceeb ntawm txheej txheej no yog tiv thaiv kom tsis txhob ya raws lossis av los ntawm kev nkag mus thiab xyuas kom meej tias cov khoom hauv pob yuav qhuav. Tshwj xeeb tshaj yog nyob rau hauv ntim khoom noj, lub hav zoov ntawm noo noo barrier yog ib qho tseem ceeb heev. PE cov ntaub ntawv yog ob qho tib si noo-pov thawj thiab muaj cov khoom cua sov zoo. Lawv feem ntau yog siv rau hauv ntim cov khoom uas yuav tsum tau muaj cov khoom pov thawj noo noo, xws li cov khoom noj thiab tshuaj.
Daim ntawv thov: Siv rau ntim cov khoom uas nkag siab txog cov dej noo, xws li cov khoom qhuav, biscuits, thiab ntim tshuaj.
6. Thaum tshav kub kub sealing txheej
Khoom siv: PE, CPP (cam khwb cia polypropylene), thiab lwm yam.
Muaj nuj nqi: Lub tshav kub sealing txheej feem ntau yog txheej sab hauv thiab siv los kaw lub hnab. Cov txheej no yog kaw los ntawm kev siv tshuab kub kub los xyuas kom meej tias lub hnab ntim tau zoo heev thiab tsis yooj yim rau tawg. Ob leeg PE thiab CPP muaj cov ntsiab lus melting tsawg thiab tuaj yeem muab ntim tau yooj yim los ntawm cov tshuab cua sov sealing.
Daim ntawv thov: Feem ntau siv rau hauv cov khoom ntim khoom uas yuav tsum tau ua kom sov, xws li cov hnab ntim khoom noj thiab cov hnab ziplock, kom cov ntim ntim tau yooj yim thiab siv tau yooj yim.
7. Cov txheej txheem ua haujlwm tshwj xeeb (yeem)
Khoom siv: Antistatic txheej, anti-ultraviolet txheej, roj-resistant txheej, thiab lwm yam tuaj yeem xaiv.
Muaj nuj nqi: Raws li kev siv tshwj xeeb, cov ntaub ntawv sib xyaw kuj tuaj yeem ntxiv qee cov txheej txheem tshwj xeeb. Piv txwv li, rau kev ntim khoom ntawm cov khoom siv hluav taws xob, ib txheej antistatic yog tsim nyog; thiab rau ntim cov khoom noj oily, ib txheej roj-resistant tuaj yeem tiv thaiv cov roj nkag.
Daim Ntawv Thov: Cov txheej txheem ua haujlwm tshwj xeeb feem ntau yog siv rau hauv cov khoom ntim nrog cov kev xav tau tshwj xeeb, xws li ntim cov khoom siv hluav taws xob thiab ntim cov khoom siv sab nraum zoov.
Cov txheej txheem ntau txheej ntawm cov hnab yas sib xyaw tuaj yeem hloov kho thiab ua kom zoo raws li kev siv tshwj xeeb. Cov ntaub ntawv sib xyaw muaj xws li ob txheej (xws li PE + PA) lossis peb txheej (xws li PET + AL + PE). Thaum txhim kho kev tiv thaiv lossis cov khoom thaiv siab dua, yuav tsum muaj cov txheej txheem ua haujlwm ntau ntxiv, xws li tsib-txheej thiab rau-txheej cov qauv. Multilayer composite hnab yog dav siv nyob rau hauv cov zaub mov, tshuaj, tshuaj lom neeg kev lag luam thiab lwm yam liaj teb vim lawv siab barrier zog, durability, ya raws tsis kam, roj kuj thiab lub teeb. Nyob rau tib lub sijhawm, nrog rau kev tsim cov thev naus laus zis, cov ntaub ntawv sib xyaw kuj tuaj yeem ua tiav ntau txoj haujlwm, xws li kev tiv thaiv ib puag ncig, biodegradability, kub tsis kam, thiab lwm yam, kom tau raws li cov kev xav tau ntawm cov neeg siv khoom sib txawv.
