Mfundo YaPulasitiki Manga
Kukulunga kwa pulasitiki kumachepetsa kuwonongeka kwa chakudya ndipo kumapangitsa kuti zisawonongeke popatula mpweya, kuchepetsa kutuluka kwa chinyezi, ndi kutsekereza zowononga kunja. Ntchito zake zazikulu ndi izi:
1. Kudzipatula kwa okosijeni: Kumalepheretsa okosijeni kukhudzana ndi chakudya, kumachepetsa kaphatikizidwe ka okosijeni komanso kuteteza chakudya kuti zisawonongeke, kusinthika, kapena kutulutsa fungo losasangalatsa.
2. Kufewetsa: Kumachepetsa kutayika kwa chinyezi, kumapangitsa kuti chakudya chikhale chonyowa, komanso kumateteza kuuma.
3. Kupatula tizilombo toyambitsa matenda: kuteteza tizilombo toyambitsa matenda ndi fumbi kuti zisalowe pamwamba pa chakudya, kuchepetsa chiopsezo cha kuwonongeka.
4. Kusindikiza: kumatsekera fungo la chakudya ndikuletsa kusakanikirana ndi zakudya zina.
Ambiri Amagwiritsidwa NtchitoPulasitiki MangaZipangizo
1. Polyethylene (PE):
Zofunika: Zosamva-zopanda poizoni, zosanunkhiza, zotetezeka kwambiri, ndiponso zimatentha-zosamva kutentha kwapakati pa -60 degrees ndi 110 degrees .
Mapulogalamu: Oyenera m'firiji komanso kusungidwa kwakanthawi-kanthawi kochepa. Osavomerezeka kuti agwiritse ntchito-malo otentha kwambiri (monga kutenthetsa ma microwave).
2. Polyvinyl Chloride (PVC):
Mawonekedwe: Kuwonekera kwambiri, kusinthasintha kwabwino, komanso kumamatira mwamphamvu, koma kumatha kukhala ndi zopangira pulasitiki (sankhani chakudya-chakudya,{1}}chopanda poizoni).
Mapulogalamu: Amagwiritsidwa ntchito kwambiri popaka zinthu zatsopano, zipatso ndi ndiwo zamasamba, koma sangakhudzidwe ndi-zakudya zonenepa kwambiri kapena zotenthedwa pakatentha kwambiri.
3. Polyvinylidene Chloride (PVDC):
Mawonekedwe: Zotchinga zolimba, zimalepheretsa mpweya kulowa mkati ndi chinyezi, komanso kukana kutentha.
Kugwiritsa Ntchito: Zomwe zimagwiritsidwa ntchito posungira zakudya zamtengo wapatali (monga nyama ndi mkaka), koma ndizokwera mtengo.
Mmene MungasankhirePulasitiki Manga
1. Chitetezo Chakudya:
Tsimikizirani kuti malondawo ndi chakudya-ndipo peŵani zinthu zowononga zapulasitiki (monga phthalates).
Zinthu za PE nthawi zambiri zimakhala zotetezeka komanso zoyenera kugwiritsidwa ntchito tsiku ndi tsiku.
2. Zofunikira pakugwiritsa ntchito:
Zakudya Zozizira: Zida za PE kapena PVC ndizoyenera, chifukwa zimapereka kusinthasintha kwabwino komanso kumamatira.
Zotchinga zapamwamba zimafunikira: Zida za PVDC zitha kugwiritsidwa ntchito kukulitsa moyo wa alumali.
Kutentha kwa Microwave: Gwiritsani ntchito zokutira pulasitiki zolembedwa "kutentha kwambiri" monga zinthu za PE zoyenera mauvuni a microwave, ndipo pewani kugwiritsa ntchito PVC.
3. Samalani Zolemba:
Yang'anani m'paketi kuti mupeze satifiketi yokhudzana ndi chakudya (monga satifiketi ya FDA kapena zizindikilo zina zachitetezo chazakudya).
Sankhani mtundu woyenera kutentha kukana malinga ndi kutentha.
Cholinga Chachikulu ChaPulasitiki Manga
1. Kusunga Chakudya:
Manga chakudya chatsopano, chakudya chophika, zipatso, masamba, mkate, ndi zina zotero kuti muwonjezere nthawi yosungiramo chakudya.
2. Chitetezo cha Mufiriji:
Pewani kutayika kwa chinyezi kuchokera pazakudya zomwe zawumitsidwa komanso kupewa kupsa mufiriji.
3. Pewani Kusamutsa Fungo:
Manga zakudya zosiyanasiyana padera kuti fungo lisasunthike mufiriji kapena kusunga.
4. Kutenthetsa Kosindikizidwa:
Mukhoza kuphika chakudya cha microwave pogwiritsa ntchito kutentha-kukulunga kwa pulasitiki kosagwira ntchito kuti musunge chinyezi (onetsetsani kuti pulasitiki isakhudze chakudyacho).
5. Osagwiritsa-Chakudya:
Chinyezi-Kutsimikizira: Kumagwiritsidwa ntchito kuteteza mabuku, zovala, kapena zinthu zamagetsi.
Kusindikiza kwakanthawi: Manga mabotolo ndi zotengera zomwe sizinagwiritsidwe ntchito kuti zisatayike kapena kuipitsidwa.
Kusamala Kugwiritsa NtchitoPulasitiki Manga
1. Pewani kukhudzana ndi kutentha kwambiri: Zovala zambiri zapulasitiki sizoyenera kukhudzana mwachindunji-zakudya zotentha kwambiri ndipo zimatha kutulutsa zinthu zovulaza.
2. Osakulunga zakudya zamafuta mwachindunji: makamaka zida za PVC, zomwe zimatha kuchita ndi mafuta ndikusungunula zinthu zovulaza.
3. Sikoyenera kusungidwa kwa nthawi yaitali-: Zovala zapulasitiki ndizoyenera kusungidwa kwakanthawi-ndipo tikulimbikitsidwa kugwiritsa ntchito zotengera zaukadaulo zosungirako{3}}kwanthawi yayitali.
