Vimzaub mov ntim filmsmuaj cov khoom zoo heev ntawm kev tiv thaiv zaub mov kev nyab xeeb, thiab lawv cov pob tshab siab tuaj yeem ua kom zoo nkauj ntim,zaub mov ntim filmsua lub luag haujlwm tseem ceeb hauv kev ntim khoom.Txhawm rau ua kom tau raws li qhov hloov pauv tam sim no ib puag ncig sab nraud thiab cov kev xav tau ntawm cov neeg siv khoom sib txawv, ntau lub tuam txhab thoob ntiaj teb tau nce lawv cov kev tshawb fawb thiab kev tsim kho ntawmzaub mov ntim films.
Tam sim no feem ntau siv cov khoom ntim cov yeeb yaj kiab feem ntau suav nrog: PVA coated barrier zaj duab xis,biaxially taw qhia polypropylene zaj duab xis (BOPP), biaxially oriented polyester zaj duab xis (BOPET),nylon zaj duab xis (PA), cam khwb cia polypropylene zaj duab xis (CPP), aluminized zaj duab xis, thiab lwm yam. Cov yeeb yaj kiab no tau siv dav vim tias lawv cov kev ua tau zoo, kev pom zoo, lub zog tensile siab, qee yam roj thiab dej thaiv cov khoom thiab cov nqi qis.
2. Khoom noj khoom haus ntim zaj duab xis
Cov hnab ntim khoom noj tau hais txog cov khoom siv tau, feem ntau yog cov khoom siv ntuj tsim xws li lipids, proteins thiab polysaccharides, ntxiv nrog cov khoom noj khoom haus, cov khoom sib txuas sib txuas, thiab lwm yam, sib xyaw los ntawm cov teebmeem ntawm lub cev, thiab ua tiav los ntawm cov txheej txheem sib txawv Cov zaj duab xis tsim.Raws li cov yam ntxwv ntawm cov khoom siv tseem ceeb siv, cov yeeb yaj kiab uas siv tau tuaj yeem muab faib ua plaub pawg: carbohydrate edible films, protein edible films, lipid edible films, thiab composite edible films.Cov yeeb yaj kiab ua tau zoo tau siv dav hauv lub neej niaj hnub, xws li cov ntaub ntawv glutinous uas paub siv hauv cov khoom qab zib ntim, pob kws ci ntim khob rau dej khov, thiab lwm yam, uas yog tag nrho cov khoom ntim khoom noj.Piv nrog rau cov khoom ntim khoom hluavtaws, cov yeeb yaj kiab uas siv tau tuaj yeem raug biodegraded yam tsis muaj kuab paug.Nrog rau kev txhim kho ntawm tib neeg txoj kev paub txog ib puag ncig, cov yeeb yaj kiab uas siv tau sai tau dhau los ua qhov kev tshawb fawb hotspot hauv kev ntim khoom noj thiab tau ua tiav qee qhov txiaj ntsig.
3. Tshuaj tua kab mobzaub mov ntim zaj duab xis
Tshuaj tua kab mobzaub mov ntim zaj duab xisyog ib hom kev ua yeeb yaj kiab uas muaj peev xwm inhibit lossis tua cov kab mob saum npoo.Raws li daim ntawv ntawm cov tshuaj tua kab mob, nws tuaj yeem muab faib ua ob hom: ncaj qha antibacterial thiab indirect antibacterial.Direct antibacterial yog tiav los ntawm kev sib cuag ncaj qha ntawm cov khoom ntim uas muaj cov tshuaj tua kab mob thiab cov khoom noj;indirect antibacterial yog tsuas yog ntxiv qee yam tshuaj rau cov cab kuj uas tuaj yeem kho cov kab mob microenvironment hauv pob, lossis siv cov kev xaiv permeability ntawm cov khoom ntim los tswj cov kab mob.Kev loj hlob, xws li hloov chaw ntim zaj duab xis.
4. Nanocomposite ntim zaj duab xis
Nanocomposite zaj duab xis hais txog cov khoom siv zaj duab xis uas tsim los ntawm cov khoom siv nrog qhov ntev ntawm qhov kev txiav txim ntawm nanometers (1-100nm) embedded nyob rau hauv sib txawv matrices.Nws muaj qhov zoo ntawm ob qho tib si cov ntaub ntawv sib xyaw thiab niaj hnub nanomaterials.Vim cov nyhuv saum npoo, ntim nyhuv, qhov loj me thiab lwm yam ntxwv tshwm sim los ntawm cov qauv tshwj xeeb ntawm nanocomposite films, lawv cov khoom siv kho qhov muag, cov khoom siv kho qhov muag, cov khoom siv tshuaj tua kab mob, cov khoom tiv thaiv thiab lwm yam muaj cov yam ntxwv uas cov khoom siv tsis muaj, ua rau lawv muaj txiaj ntsig. hauv zaub mov.Nws yog dav siv hauv kev ntim khoom, tsis yog tsuas yog ua kom tau raws li qhov yuav tsum tau ua ntawm kev ncua lub txee lub neej ntawm cov zaub mov, tab sis kuj tseem saib xyuas cov kev hloov pauv ntawm cov zaub mov hauv pob.
5. Biodegradable ntim zaj duab xis
Cov yeeb yaj kiab no tsuas yog daws qhov teeb meem uas nws nyuaj rau rov ua dua qee yam khoom ntim uas tsis yog degradable.Kev faus lawv hauv av yuav rhuav tshem cov qauv hauv av, thiab kev siv hluav taws xob yuav tsim cov pa phem thiab ua rau huab cua muaj kuab lom.Raws li cov txheej txheem ntawm degradation, nws yog tsuas yog muab faib ua photodegradable ntim zaj duab xis thiab biodegradable ntim zaj duab xis.
Vim tias cov yeeb yaj kiab degradable tau raws li kev tiv thaiv ib puag ncig, tam sim no lawv tau kawm dav thiab tau nyiam cov neeg tshawb fawb ntau yam.Ntau yam tshiab degradable thiab ib puag ncig tus phooj ywg cov ntaub ntawv tau tsim, xws li polymers ua los ntawm cov hmoov txhuv nplej siab raw khoom siv cov khoom siv cog dua tshiab (xws li pob kws).Lactic acid (PLA), ib puag ncig tus phooj ywg yas polypropylene carbonate (PPC) ua los ntawm carbon dioxide thiab propylene oxide raws li raw cov ntaub ntawv, thiab chitosan (chitosan) tau los ntawm deacetylation ntawm chitin, uas yog dav pom nyob rau hauv cov xwm..Cov khoom siv no raug txo qis;optical zog, pob tshab, thiab nto gloss kuj tsis tiav degradable.Nws tsis tsuas yog ua tau raws li qhov siab pob tshab ntawm ntim cov yeeb yaj kiab, tab sis kuj tseem ua lub luag haujlwm tseem ceeb hauv kev txhim kho ib puag ncig, thiab muaj kev cia siab rau daim ntawv thov zoo.
Txawm li cas los xij, nws tsim nyog hais tias cov ntawv ntim khoom noj muaj cov kev cai nruj dua ntawm kev nyiam huv thiab kev nyab xeeb ntawm cov khoom ntim, thiab yuav tsum muaj cov qauv tsim nyog thiab cov txheej txheem kuaj.Txawm hais tias qee qhov kev ntsuas tau raug coj los hauv tsev thiab txawv teb chaws, tseem muaj ntau qhov tsis txaus..Cov teb chaws txawv teb chaws tsis ntev los no tau tsim kev siv tshuab plasma deg kho tshuab kom evaporate SiOx, AlOx thiab lwm yam inorganic oxide coatings ntawm substrates xws li PET thiab BOPP kom tau ntim cov yeeb yaj kiab nrog cov khoom muaj kev tiv thaiv siab.Cov yeeb yaj kiab silicone-coated yog qhov ruaj khov rau qhov kub thiab txias thiab tsim nyog rau kev ua noj ua haus thiab ua kom tsis muaj menyuam.Degradable films, edible films thiab dej-soluble films yog tag nrho cov ntsuab ntim khoom tsim los ntawm lub teb chaws nyob ib ncig ntawm lub ntiaj teb no nyob rau hauv xyoo tas los.Kev tshawb fawb txog kev siv natural macromolecular polymers xws li lipids, proteins thiab suab thaj raws li ntim cov yeeb yaj kiab kuj tau nrov heev.
Yog tias koj muajzaub mov ntim zaj duab xiscov kev xav tau, koj tuaj yeem tiv tauj peb.Raws li lub chaw tsim khoom lag luam hloov pauv tau ntau dua 20 xyoo, peb yuav muab koj cov kev daws teeb meem zoo raws li koj cov khoom xav tau thiab peev nyiaj.
Post lub sij hawm: Dec-27-2023
