Isikhwama Sokupakisha Impahla Isingeniso

Abantu abaningi abazi ukuthi iyiphi impahlaizikhwama zokupakisha ukudlangokuvamile zenziwa.Othembekile uzochaza kafushane ngezinto zokwakha zeisikhwama sokupakisha ukudlas.

Izinto zokupakisha ukudla: I-PVDC (i-polyvinylidene chloride), i-PE (i-polyethylene), i-PP (i-polypropylene), i-PA (inayiloni), i-EVOH (i-ethylene/vinyl alcohol copolymer), ifilimu ye-aluminium (i-aluminium + PE), njll.
Ukukhiqizwa kwefilimu kungahlukaniswa: ifilimu elula, ifilimu eshaywayo.
Njengamanje, izinto eziyinhloko ezisetshenziselwa ukupakisha ukudla yi-PP ne-PE, okungukuthi, i-polypropylene ne-polyethylene plastics.Kuzo zombili izinto zokwakha, ukupakishwa kokudla kunganeliseka.
Uma kuqhathaniswa nokupakishwa okungekona okokudla, i-PP ne-PE aziqukethe izithasiselo zepulasitiki.Sonke siyazi ukuthi izithasiselo zepulasitiki zinomthelela omkhulu emzimbeni womuntu, ikakhulukazi impilo yezingane.I-PP ne-PE ngeke zikhulule izinto ezinobuthi ngesikhathi sokusetshenziswa.Ezinye Ezinye izinto zingadala umdlavuza, kodwa i-PP ne-PE awakwenzi.Ukupakishwa kwe-PVC kwakusetshenziselwa ukusetshenziselwa ifilimu yokudla, kodwa ngenxa yokungavikeleki kwayo, kancane kancane ithathelwa indawo yifilimu ye-PE cling.
Izici ze-PE yilezi: izinto ezithambile, zemishini zimpofu kune-PP, imikhiqizo emele ihlanganisa izikhwama zokuthenga ezitolo ezinkulu, ukugoqa kwepulasitiki, izikhwama zikadoti, njll. izakhiwo, nokusebenza kokushisa okuphezulu kungcono kune-PE, okusho ukuthi umkhiqizo unezikhwama zesinkwa.
Ngokuvamile ngokwesakhiwo sezinto ezibonakalayo, ungqimba lwangaphakathi yi-PE noma i-CPP, ungqimba lwangaphandle luyi-PA, PET, phakathi nendawo kungase kube i-EVOH noma i-PVDC, njll., kanti ezinye ziyifilimu e-aluminium noma i-aluminium foil.

I-PE ne-CPP inezici ezinhle zokuvala ukushisa, okungukuthi, kulula ukuvala.
I-PA ne-PET inokuphrinta okuhle futhi ingasetshenziswa kungqimba lwangaphandle ukuze uphrinte izithombe ezinhle.
I-PVDC ne-EVOH zinezici ezinhle zokuvimbela futhi zivimbela i-oxidation.
Ifilimu ye-aluminium ne-aluminium foil inezici ezinhle zokuvikela ukukhanya futhi ifanele imikhiqizo engafanele ukukhanya.

Izinto ezihlukahlukene zinezakhiwo ezahlukene kanye nokusetshenziswa okuhlukile.Izikhwama ezijwayelekile zokupakisha ukudla aziyona into eyodwa, kodwa ziyizinhlanganisela zezingqimba eziningi, ezingahlanganiswa nezingqimba ezimbili, izendlalelo ezintathu, izendlalelo ezine, njll.
Ukudla okomilefuthiukudla okuqandisiwengokuvamile zenziwe nge-PET/PE.
Ngokwesibonelo,ukupheka okusezingeni eliphezulungokuvamile yenziwe inayiloni eyinhlanganisela CPP, noma ezinye izinhlanganisela.
I-casing ebomvu ye-ham yinto eyodwa ye-PVDC.
Uswidi noshokoledingokuvamile sebenzisa iphepha elibonisa ngale/PP, i-kraft paper/PE/AL/PE, AL/PE, njll.