Kafukufuku wa sayansipakupanga, mtundu komanso kugwiritsa ntchito mafilimu odyedwa/owonongeka popanga zakudya zachitika ndi magulu angapo ofufuza padziko lonse lapansi ndipo zanenedwa m'mabuku ofufuza.5-9.Kuthekera kwakukulu kwazamalonda ndi chilengedwe m'malo amafilimu odyeka / zovunda / zokutira nthawi zambiri zagogomezedwa.5,10,11ndi zofalitsa zambiri zakhala zikukamba nkhani zokhudzana ndi makina, kusamuka kwa gasi, ndi zotsatira za zinthu zina pazigawozi, monga mtundu ndi zomwe zili mu plasticisers, pH, chinyezi ndi kutentha ndi zina.6, 8, 10-15.
Komabe,kafukufuku wamakanema odyedwa/owonongekaidakali yakhanda ndipo kafukufuku wokhudza kugwiritsa ntchito mafilimu odyedwa/owonongeka m'mafakitale alandira chidwi kwambiri m'zaka zaposachedwa, komabe, kufalitsa sikunali kochepa.
Ofufuza muFood Packaging Group, Dipatimenti ya Food and Nutritional Sciences, University College Cork, Ireland, apanga mafilimu angapo ogwira ntchito, opangidwa ndi biopolymer, odible / biodegradable m'zaka zingapo zapitazi.
Zolepheretsa zapaketi zodyedwa
Nthawi zambiri, mafilimu odyedwa amakhala ndi ntchito zochepa makamaka chifukwa cha mawonekedwe awo otsika.Mwachitsanzo, mafilimu osakwatiwa, okhala ndi lipid amakhala ndi zinthu zabwino zolepheretsa chinyezi koma alibe mphamvu zamakina23.Chifukwa chake, makanema opangidwa ndi laminated adapangidwa ndikumamatira mafilimu awiri kapena kupitilira apo palimodzi.Komabe, mafilimu opangidwa ndi laminated ndi opindulitsa kwa mafilimu amodzi, opangidwa ndi emulsion-based biopolymer chifukwa chokhala ndi zotchinga zowonjezera.Kupanga mapangidwe opangidwa ndi laminated kungathe kuthana ndi zofooka izi pogwiritsa ntchito mafilimu odyetserako / biodegradable okhala ndi zigawo zingapo zogwira ntchito.
Mafilimu odyetsedwa ndi zokutirakutengera mapuloteni osungunuka m'madzi nthawi zambiri amasungunuka okha m'madzi koma amakhala ndi mpweya wabwino kwambiri, lipid komanso zotchinga zotsekemera.Mapuloteni amakhala ngati ogwirizana, matrix opangidwa m'makina ambiri, opereka mafilimu ndi zokutira zokhala ndi makina abwino.Komano, ma lipids amakhala ngati zotchinga zabwino za chinyezi, koma amakhala ndi zotchinga zamafuta ochepa, zamafuta ndi zokometsera.Mwa kuphatikiza mapuloteni ndi lipids mu emulsion kapena bilayer (membala yomwe imakhala ndi zigawo ziwiri za maselo), zikhumbo zabwino za zonsezi zikhoza kuphatikizidwa ndipo zoipazo zimachepetsedwa.
Kuchokera ku kafukufuku wopangidwa ndi aFood Packaging Groupku UCC, mawonekedwe amitundu yonse yamakanema odyedwa/owonongeka ndi awa:
- Makulidwe a makanema odyedwa / owonongeka amachokera ku 25μm mpaka 140μm
- Makanema amatha kukhala omveka bwino, owonekera, komanso owoneka bwino kapena osawoneka bwino kutengera zomwe zimagwiritsidwa ntchito komanso njira yopangira yomwe imagwiritsidwa ntchito.
- Mitundu yamakanema okalamba omwe amayendetsedwa ndi chilengedwe amawongolera mawonekedwe amakina komanso zotchinga mpweya
- Kusunga mafilimu pamalo ozungulira (18-23 ° C, 40- 65 peresenti RH) kwa zaka zisanu sikunasinthe kwambiri mawonekedwe.
- Mafilimu opangidwa kuchokera kuzinthu zosiyanasiyana amatha kupangidwa mosavuta pamodzi
- Mafilimu opangidwa akhoza kulembedwa, kusindikizidwa kapena kusindikizidwa kutentha
- Kusiyanasiyana kwakung'ono mu mawonekedwe a filimu (mwachitsanzo, kupatukana kwa gawo la biopolymer) kumakhudza mawonekedwe a filimu
Nthawi yotumiza: Mar-05-2021