Amayi ambiri amatha kugwiritsa ntchito filimu ponyamula chakudya. Zikhoza kuphimba nyama, nsomba, bowa, soseji ndi zakudya zamabotolo, tchizi, masamba, masamba ndi zipatso. Phukusili lili ndi ubwino wambiri pa cellophane. Tiyeni tiphunzire zambiri zokhudza filimu yamagulu, ntchito yake yothandiza komanso zothandiza.
Zomwe amapanga mafilimu a zakudya
Filimuyi yophimba chakudya sichiyenera kutchuka chifukwa ichi:
- kumathandiza kuti asungidwe kwa nthawi yaitali;
- amaziteteza ku "kuyimba" ndi kuyanika;
- Ndizosavuta kuzigwiritsira ntchito, chifukwa zimangokhala zosasunthika mosavuta.
Firimu yotereyi ingapangidwe ndi polyethylene (PE) kapena polyvinyl chloride (PVC). Zoterezi zimaphatikizapo kuika katundu kwa nthawi yaitali yosungirako. PVC ili ndi katundu wodabwitsa wolola mpweya mkati mwa filimuyi, kuwonetsa chinyezi ndi carbon dioxide kunja. Chifukwa cha microstructure ya filimuyo, malonda (makamaka apakale) angapangidwenso kutentha, ndipo kuchepa sikungapangidwe mkati mwa filimuyi.
Ponena za filimu ya polyethylene, kawirikawiri ndi yotchipa ndipo ndi yabwino yokha yosungirako nthawi yayitali, chifukwa imateteza kokha zinyontho ndi fungo kunja kwa kunja. Kuwonjezera pamenepo, filimuyo imapereka mankhwala, makamaka masamba atsopano ndi zipatso, mawonekedwe ooneka bwino ndikuwawala.
Mafilimu osakanizidwa ndi otentha ndi ozizira ndi opangidwa ndi polyolefin. Ndizowonjezera komanso zotanuka. Firimuyi ikhoza kugwiritsidwa ntchito kufalitsa chakudya m'chipindamo ndikukonzekera chakudya mu uvuni wa microwave . Ngati mumakayikira kuti ndizotheka kutentha filimu yamadzi, dziwani kuti: mphindi ino iyenera kuwonetsedwa pa phukusi, komanso kutentha kwakukulu kwa Kutentha. Inde, mitundu yonse yonse ya filimuyi imatha kusokonekera ndipo yapangidwa, motero, ntchito imodzi yokha. Zakudya zimawononga filimu imagwiritsidwa ntchito osati pa moyo wa tsiku ndi tsiku, komanso m'mabizinesi amalonda, m'madera odyetsera anthu, mu mafakitale, ndi zina zotero.