Zokhazikika za PVC za Makanema Olimbitsa Chakudya: Chitetezo, Magwiridwe Antchito & Zochitika

Mukakulunga zipatso zatsopano kapena zotsala ndi PVC cling film, mwina simungaganizire za mankhwala ovuta omwe amapangitsa pepala lopyapyala la pulasitiki kukhala lofewa, lowonekera bwino, komanso lotetezeka kuti ligwirizane ndi chakudya. Komabe kumbuyo kwa mpukutu uliwonse wa PVC cling film yapamwamba kwambiri pali gawo lofunika kwambiri:Chokhazikika cha PVCZowonjezera izi zomwe sizikudziwika bwino zimagwira ntchito yofunika kwambiri popewa kuwonongeka, kuonetsetsa kuti zinthu zili bwino, komanso kuti zinthu zigwire bwino ntchito—zomwe zimapangitsa kuti zikhale zofunika kwambiri pokonza chakudya.

Chifukwa Chake Mafilimu Olimbitsa PVC Amafunikira Zokhazikika Zapadera

PVC imakhala yosakhazikika ikakumana ndi kutentha, kuwala, ndi kupsinjika kwa makina panthawi yokonza ndi kugwiritsa ntchito. Popanda kukhazikika bwino, PVC imawonongeka, kutulutsa hydrochloric acid yoyipa ndikupangitsa kuti zinthuzo zikhale zofooka, zosinthika mtundu, komanso zosatetezeka kuti zisakhudze chakudya.

Makamaka pa mafilimu a cling, mavuto ndi apadera:

• Amafuna kuwonekera bwino kwambiri kuti awonetse zakudya zomwe agulitsa

• Ayenera kukhala osinthasintha kutentha kosiyanasiyana

• Kufunika kukana kuwonongeka panthawi yokonza kutentha kwambiri

• Ayenera kutsatira malamulo okhwima okhudza chitetezo cha chakudya

• Zimafunika kukhazikika kwa nthawi yayitali panthawi yosungira ndi kugwiritsa ntchito

Zofunikira Zofunikira pa Zokhazikika za PVC Zoyenera Chakudya

Si zinthu zonse zolimbitsa thupi za PVC zomwe zingagwiritsidwe ntchito pokhudzana ndi chakudya. Zinthu zabwino kwambiri zolimbitsa thupi za mafilimu a PVC ziyenera kukwaniritsa miyezo yokhwima:

Kutsatira Malamulo

Zolimbitsa thupi za PVC zapamwamba pa chakudya ziyenera kutsatira malamulo okhwima padziko lonse lapansi. Ku United States, gawo 177 la FDA la 21 CFR limalamulira zinthu zapulasitiki zomwe zimakhudzana ndi chakudya, zomwe zimapangitsa kuti zowonjezera monga ma phthalates zisapitirire 0.1% muzinthu za PVC. Malamulo aku Europe (EU 10/2011) amaletsanso zinthu zovulaza ndikukhazikitsa malire osamukira kuti atsimikizire chitetezo cha ogula.

Kupanga Kopanda Poizoni

Zolimbitsa thupi zopangidwa ndi lead, zomwe kale zinali zofala pokonza PVC, zasiya kugwiritsidwa ntchito kwambiri pakudya chifukwa cha nkhawa za poizoni.zolimbitsa chakudyaPewani kugwiritsa ntchito zitsulo zolemera kotheratu, poganizira njira zina zotetezeka.

Kukhazikika kwa Kutentha

Kupanga filimu ya cling kumaphatikizapo kutulutsa kutentha kwambiri komanso njira zowerengera zomwe zingayambitse kuwonongeka kwa PVC. Zokhazikika bwino ziyenera kupereka chitetezo champhamvu cha kutentha panthawi yopanga ndikusunga umphumphu wa filimuyo.

Kukonza Zinthu Poyera

Mosiyana ndi zinthu zambiri za PVC, mafilimu omatira amafunika kumveka bwino kwambiri. Mafilimu abwino kwambiri okhazikika amafalikira mofanana popanda kupanga chifunga kapena kusokoneza mawonekedwe a kuwala.

Kugwirizana ndi Zowonjezera Zina

Zokhazikika ziyenera kugwira ntchito mogwirizana ndi mapulasitiki, mafuta odzola, ndi zina zowonjezera mu filimu ya cling kuti zigwire ntchito bwino.

Zosankha Zapamwamba Zokhazikika pa Mafilimu Olimbitsa a PVC

Ngakhale kuti pali mitundu yosiyanasiyana ya mankhwala okhazikika, mitundu iwiri yawonekera ngati njira zazikulu zopangira mafilimu osungira zakudya:

Zokhazikika za Calcium-Zinc (Ca-Zn)

Zokhazikika za calcium-zincZakhala muyezo wabwino kwambiri pakugwiritsa ntchito PVC yapamwamba pazakudya. Zowonjezera izi zopanda poizoni komanso zoteteza chilengedwe zimapereka magwiridwe antchito abwino komanso chitetezo chabwino:

Calcium zinc stabilizer ndi njira yopanda poizoni yopanda zitsulo zoopsa ndi mankhwala ena oopsa, zomwe zimapangitsa kuti ikhale mtundu watsopano wa chokhazikika choteteza chilengedwe cha PVC.

Ubwino waukulu ndi monga:

• Kukhazikika kwabwino kwambiri pa kutentha panthawi yokonza

• Kulimba bwino pa nyengo komanso kukana chikasu

• Mafuta odzola bwino omwe amathandiza kuti ntchito yotulutsa ipite patsogolo

• Kugwirizana bwino ndi utomoni wa PVC ndi zina zowonjezera

• Kutsatira malamulo akuluakulu okhudzana ndi kudya

• Kutha kusunga mawonekedwe owonekera m'mafilimu opyapyala

Zokhazikika za UV kuti Zitetezedwe Kwambiri

Ngakhale kuti si zinthu zolimbitsa kutentha, zinthu zoyamwitsa za UV zimathandiza kwambiri pakusunga umphumphu wa filimu yolimbitsa thupi panthawi yosungidwa ndikugwiritsidwa ntchito. Zowonjezera izi ndizofunika kwambiri pa mafilimu olimbitsa thupi omwe amagwiritsidwa ntchito m'mabokosi owonekera omwe amawonetsedwa ndi kuwala.

Momwe Mungasankhire Chokhazikika Choyenera pa Pulogalamu Yanu Yogwiritsira Ntchito Filimu ya Cling

Kusankha stabilizer yabwino kumafuna kulinganiza zinthu zingapo:

• Kutsatira Malamulo:Tsimikizirani kuti mukutsatira miyezo ya chitetezo cha chakudya m'madera osiyanasiyana (FDA, EU 10/2011, ndi zina zotero) pamisika yomwe mukufuna kugulitsa.

• Zofunikira pa Kukonza:Ganizirani momwe zinthu zanu zimakhalira—njira zotenthetsera kwambiri zingafunike kukhazikika kwa kutentha kwambiri.

• Zosowa za Magwiridwe:Unikani zofunikira pakumveka bwino, zosowa zosinthasintha, ndi nthawi yomwe zinthu zanu zopangira filimu yolumikizidwa zimasungika.

• Kugwirizana:Onetsetsani kuti chokhazikikacho chikugwira ntchito bwino ndi mapulasitiki anu ndi zina zowonjezera.

• Kukhazikika:Yang'anani zinthu zokhazikika zomwe zimathandiza zolinga zachilengedwe kudzera mu poizoni wochepa komanso kuchepetsa kuwonongeka kwa chilengedwe.

• Kugwiritsa Ntchito Ndalama Moyenera:Linganizani phindu la magwiridwe antchito poyerekeza ndi ndalama zopangira, poganizira zonse ziwiri zowonjezera komanso phindu la magwiridwe antchito.

Tsogolo la Zokhazikika za PVC mu Mapaketi a Chakudya

Pamene kufunikira kwa ogula kwa ma phukusi otetezeka komanso ogwira ntchito bwino kukupitilira kukula, ukadaulo wa PVC wokhazikika udzasintha kuti ukwaniritse zovuta zatsopano. Tikuyembekeza kuwona:

• Kupititsa patsogolo kukhazikika kwa kutentha pa kuchuluka kochepa kwa zowonjezera

• Ma formula okonzedwa bwino omwe amathandizira kubwezeretsanso zinthu ndi zolinga zachuma zozungulira

• Zosakaniza zatsopano zokhazikika zomwe zakonzedwa kuti zigwiritsidwe ntchito pa filimu inayake ya cling

• Njira zoyesera zapamwamba kuti zitsimikizire chitetezo ndi magwiridwe antchito

• Kupitiliza kusintha kwa malamulo komwe kukuyendetsa luso m'njira zina zopanda poizoni

Zatsopano mu sayansi ya zinthu zikutsegula mwayi watsopano wa zinthu zokhazikika za PVC, ndipo kafukufuku akuyang'ana kwambiri pakupanga njira zogwira mtima komanso zokhazikika zogwiritsira ntchito ma CD a chakudya.

Kuyika Ndalama mu Zokhazikika Zabwino za Mafilimu Olimba Kwambiri

Chokhazikika choyenera cha PVC ndichofunikira kwambiri popanga mafilimu abwino kwambiri, otetezeka, komanso ogwirizana ndi zosowa za makasitomala pokonza chakudya. Ngakhale kuti zokhazikika za calcium-zinc pakadali pano zikutsogolera pamsika chifukwa cha chitetezo chawo chabwino komanso magwiridwe antchito, luso lomwe likupitilizabe likulonjeza mayankho abwino kwambiri mtsogolo.

Mwa kuika patsogolo kutsata malamulo, makhalidwe a ntchito, ndi zinthu zokhudzana ndi chilengedwe, opanga amatha kusankha zinthu zokhazikika zomwe sizimangokwaniritsa zofunikira pakali pano komanso zomwe zingayike malonda awo kuti apambane mtsogolo pamsika womwe ukusintha mwachangu.

Pamene msika wa PVC stabilizer ukupitilira kukula kwake kosalekeza, kufunika kwa zowonjezera zofunika izi pakuonetsetsa kuti chitetezo ndi magwiridwe antchito a mafilimu osungira chakudya aziwonjezeka—kupangitsa kusankha bwino zotetezera kukhala zofunika kwambiri kuposa kale lonse.