Namhlanje kunzima ukukholelwa kule nto, kodwa ngoku kutshanje, iifokstiki zeplastiki zixabiseke kakhulu kunye nokunqongophala, kwaye ayikho enye yeentlobo zepakethe elahlayo. Ixesha elityebileyo litshintshile ukuba libhetele kwaye phantse iikhikhi zonke unokufumana i-polyethylene okanye i-polyvinyl ifilimu ye-chloride. Abaphulaphuli baxabisa yonke imiba emihle yale nto kwaye bayisebenzise ngempumelelo enkulu yokugcina iimveliso, ukupakisha iipakethi ezahlukeneyo nokutya okupheka. Yaye yonke into enomdla kakhulu ngefilimu yokutya onokuyifunda kwinqaku lethu.
Ifilimu yemveliso yokutya
Okokuqala, masiqhelane ne heroine yeendaba zethu kufuphi. Ifilimu yokutya ingaba i-polyethylene okanye i-polyvinyl chloride (PVC). Yaye nangona kunzima kumntu ozahlukileyo ukuba ahlukanise omnye nomnye ekuqaleni kokubona, kukho ukungafani kwezinye iimpawu zabo. Eyona nto iphambili igqibeleleyo igcwalise i-gesi kunye nokumelana kwamanzi kwefilimu ye-polyethylene ngokuphambene nendawo "yokuphefumula" isihlobo sePVC. Ngaloo nto, ifilimu eyenziwe ngamacandelo amancinci amancinci ye-polyethylene ingasetyenziselwa ukutya okubandayo, umzekelo, ukulungiselela iipraps , imifuno, izithelo, isonka. Imveliso phantsi kwegobolondo enjalo ayiyi kubonakaliswa kwimiphumo ewonakalisayo yendalo kwaye izakugcina ngokupheleleyo iipropati zayo kulo lonke ubomi bomkhiqizo. Inzame yokupakisha into ethile kwifilimu yokugubungela iplastiki iya kugqitywa kwi-fiasco epheleleyo: iya kukhwela kwaye ilahlekelwe iipropati zayo. Ayiyona ndlela efanelekileyo, i-polyethylene iyayiphendula ukutshisa ixesha elide lokushisa - kwifriji iya kuba yinto efudumele kwaye ibe yinto ephazamisayo. Kodwa ifilimu ye-PVC iyakwazi ukujamelana ngokucacileyo kunye neemveliso zokutshisa kunye nezityholo, kunye nesitya phantsi kwayo asiyi kulahlekelwa ngumtsalane wayo kwaye ayiyi kubakho inkungu. Ukongezelela, akungabi namdla kumafutha kunye nama-acids, okwenza kwakhona isisombululo esihle sokupakisha izitya eziphekiweyo. Ngaphezu koko, ukukwazi ukujamelana nokushisa okwaneleyo kwenza kube lula ukusebenzisa ifilimu enjalo kwi-oven microwave, umzekelo, ukulungisa ukutya ngaphandle kokususa ipakethe. Ngaphezu koko, iifilimu ezahlukeneyo zininzi ngokufanayo - zombini ezi zinto zikwazi ukululalisa ngokuphindwe kathathu ubude bazo bokuqala kwaye zihambelane ngokupheleleyo nakubani na phezulu. Konke oku kukuvumela ukuba uphawule ngokukhawuleza iimveliso zaso nasiphi na isakhiwo kunye nobukhulu, ngaphandle kokusebenzisa naziphi na izigqeba zenkampani yesithathu kunye nokulinda. Yaye inokwenziwa ngokubini ngoncedo lwamashishini apakisha okukhethekileyo, kunye nokuhambisa umqulu wefilimu ngesandla.
Nciphisa ifilimu yokutya
Indawo ekhethekileyo phakathi kwezinto zokupakisha zokutya iyanciphisa ifilimu. Isiqalo salo esichaphazelekayo kukukwazi ukubambisana phantsi kwefuthe lobushushu kwaye uthathe umlo wento okumele ipakishwe. Ufumene isicelo esona sikhulu kunazo zonke kummandla wezorhwebo, apho iimveliso ezahlukeneyo zokutya zipakishwe kwifilimu. Kule meko, ifilimu igcina ukukhanya okukhulu, ngoko ke umboleki unalo ithuba kuwo wonke
Ubuninzi befilimu yokutya
Ifilimu yokutya ye-polyethylene ephezulu ifumaneka kwi-6, 7.5 okanye 8 microns. Ifilimu ye-PVC yokutya, le parameter ingaba yi-8, 9, 10, 12 okanye i-14 microns. Xa ukhetha ubukhulu, kufuneka ugxininise uhlobo lweemveliso eziza kuhlanganiswa. Ngoko ke, ngokupakisha amajikijolo, iziqhamo, ama-mushroom kunye nemifuno, ifilimu ye-PVC ene-9 microns iyimfuneko. Kwaye ngokutya, intlanzi kunye neemveliso ezigqityiweyo, kufuneka uthathe ifilimu ngobunzima be-12-14 microns.