Mapaketi a ayezi okhala mufiriji nthawi zambiri amapangidwa ndi zinthu zingapo zofunika zomwe zimapatsa kutsekemera kwabwino komanso kulimba kokwanira.Zida zazikulu ndi izi:
1. Zinthu zosanjikiza zakunja:
-Nayiloni: Yopepuka komanso yolimba, yomwe imagwiritsidwa ntchito pakunja kwa mapaketi a ayezi apamwamba kwambiri.Nylon ili ndi kukana kwabwino kovala komanso kukana misozi.
-Polyester: Chinthu china chakunja chomwe chimagwiritsidwa ntchito kwambiri, chotsika mtengo pang'ono kuposa nayiloni, komanso chimakhala cholimba komanso chosang'ambika.
-Vinyl: Yoyenera kugwiritsa ntchito zomwe zimafunikira kutsekereza madzi kapena malo osavuta kuyeretsa.
2. Insulation zida:
-Polyurethane thovu: ndi chinthu chodziwikiratu chofala kwambiri, ndipo chimagwiritsidwa ntchito kwambiri m'matumba a ayezi osungidwa mufiriji chifukwa chakuchita bwino kwambiri kwamafuta otsekemera komanso mawonekedwe opepuka.
-Polystyrene (EPS) thovu: imadziwikanso kuti styrofoam, zinthuzi zimagwiritsidwa ntchito m'mabokosi ozizira onyamula komanso njira zosungirako nthawi imodzi.
3. Zida zamkati:
-Aluminiyamu zojambulazo kapena filimu yachitsulo: yomwe imagwiritsidwa ntchito ngati chitsulo chothandizira kuwonetsa kutentha ndi kusunga kutentha kwamkati.
-Food grade PEVA (polyethylene vinyl acetate): Pulasitiki yopanda poizoni yomwe imagwiritsidwa ntchito kwambiri mkati mwa matumba a ayezi pokhudzana ndi chakudya, ndipo imatchuka kwambiri chifukwa ilibe PVC.
4. Filler:
-Gel bag: thumba lomwe lili ndi gel osakaniza, lomwe limatha kusunga kuziziritsa kwa nthawi yayitali mutatha kuzizira.Gel nthawi zambiri amapangidwa ndi kusakaniza madzi ndi polima (monga polyacrylamide), nthawi zina zoteteza ndi zoletsa kuzizira zimawonjezeredwa kuti zigwire bwino ntchito.
-Madzi amchere kapena njira zina: Mapaketi ena osavuta a ayezi amatha kukhala ndi madzi amchere okha, omwe amakhala ndi malo oundana ocheperako kuposa madzi oyera ndipo amatha kuziziritsa nthawi yayitali mufiriji.
Posankha thumba la ayezi loyenera mufiriji, muyenera kuganizira ngati zinthu zake zikukwaniritsa zosowa zanu, makamaka ngati zimafuna chiphaso cha chitetezo cha chakudya, komanso ngati thumba la ayezi likufunika kuyeretsedwa pafupipafupi kapena kugwiritsidwa ntchito m'malo enaake.
Nthawi yotumiza: Jun-20-2024