Ukulahlwa kokudla emhlabeni jikelele kubangela ukulahlekelwa komnotho okungaphezu kwamaRandi ayizigidi eziyizinkulungwane ezingu-400 minyaka yonke. Ngaphandle kwezindleko zezimali, kuyimbangela ebalulekile yokushintsha kwesimo sezulu. Ngokusho kwe-UN Food and Agriculture Organization (FAO), cishe u-13.2% wokudla uyalahleka ngaphambi kokufika ezitolo, kanti omunye u-19% uyalahleka ezingeni labathengi.

Ku-Interpack 2026, uhlelo lwe-SAVE FOOD lugcizelele isidingo esiphuthumayo sezixazululo zokupakisha ukuze zisuke “ekuvikeleni okungenamsebenzi” ziye ekulondolozeni okusebenzayo. Umsebe we-electronUbuchwepheshe bokushiswa kwemisebe (EB) buvela njengethuluzi elinamandla lokunciphisa imfucuza ngezindlela ezimbili: ukuthuthukisa ukusebenza kokupakisha nokuphatha ukudla ngqo. Lokhu kusungulwa okusekelwe kwisayensi yenuzi kudala ukuzivikela okunezingqimba ezimbili ekonakalisweni—kusukela ezintweni zokupakisha kuya ekudleni okungaphakathi.

Ku-Interpack 2026 eDüsseldorf, eJalimane, ukugqama kwakusekuxhumaneni kokusebenza kanye nokusimama kokupakisha. Kusukela kuma-polymer asekelwe ku-BASF kuya ezintweni ezisetshenziswa kabusha ngamakhemikhali ze-SABIC, kanye nasephrojekthini yokupakisha yamagciwane kaFraunhofer i-MATE4MEAT kuya esithangamini se-SAVE FOOD esithi “Ukunciphisa Ukulahlwa Kokudla”, imboni yokupakisha yomhlaba wonke ishesha iye emnothweni ojikelezayo.

Kodwa izinkampani zokupakisha zibhekene nenselele enkulu: indlela yokunciphisa umthelela emvelweni ngenkathi zigcina ukusebenza okuvikelayo, isikhathi sokuphelelwa yisikhathi, kanye nokusebenza kahle kokukhiqiza.

Umsebe we-electronUbuchwepheshe bokukhanyisela ngemisebe (EB), inqubo yezimboni eqinisekisiwe amashumi eminyaka, buvela njengesihluthulelo esiyinhloko. Ngokuvumela ukuxhumanisa ngokomzimba, ukuguqulwa kwendawo, kanye nokucubungula okuhlanganisiwe ngaphandle kwezithasiselo zamakhemikhali, ukukhanyisela ngemisebe ye-EB kuvumela ukupakishwa ukuthi kube:

Ukuncipha ngaphandle kokulahlekelwa amandla,

Izinto ezisetshenziswayo ezisebenza ngendlela ehlanganisiwe, kanye

Ngihileleke kakhulu ekwandiseni isikhathi sokuphila kweshelufu.

Ezimbonini ezifana nezakhiwo zangaphakathi nezengaphandle zezimoto, izindlu zemishini yasekhaya, ukupakishwa kokunakekelwa komuntu siqu, kanye namathoyizi, inselele eyodwa ephindaphindayo "ukuhlubuka kopende ngemva kokufutha ku-PP (polypropylene) noma i-PE substrates." Ngisho nangezinqubo ezifanayo zangaphambi kokwelashwa, amanye amaqoqo adlula ekulawulweni kwekhwalithi kanti amanye ayahluleka. Ngokuvamile, imbangela eyinhloko ilandelwa esinyathelweni esisodwa esibalulekile: ukuthi ungqimba lwe-primer lusetshenziswe kahle yini.

Amanzi e-PP, izinto zokwelapha ze-PP, ama-primer e-PP—la magama ajwayelekile akhomba ikhambi elifanayo: i-chlorinated polypropylene (CPP) resin. Kodwa kungani kunjalo? I-resin ye-CPP Isebenza kahle kangaka ekuthuthukiseni ukunamathela kumapulasitiki “aqinile ukubopha” njenge-PP? Idala kanjani isibopho esithembekile phakathi kokumbozwa kanye ne-substrate?

Embonini yokupakisha enciphisa ukushisa, ifilimu yokunciphisa i-POF (multilayer co-extruded polyolefin) isibe yindlela ekhethwayo kunamafilimu endabuko e-PVC. Ukucaca kwayo okuphezulu, ukuncishiswa okuhle kakhulu, ukumelana nokubanda, kanye nezici ezinobungani nemvelo kwenza kube kuhle kakhulu ekupakisheni nasekuvikeleni ubuso ekudleni, eziphuzweni, kwezemithi, nasezinhlelweni zokunakekelwa komuntu siqu.

Kodwa-ke, njengoba izimakethe zokupakisha zomhlaba wonke zifuna ukusebenza kahle kokukhiqiza okuphezulu, ukuhambisana okungcono, kanye namazinga aphansi okukhubazeka, abathengi abasagxili kuphela kudatha yokuncipha. Bakhathazeka kakhulu ngendlela amafilimu asebenza ngayo emigqeni yokupakisha esheshayo—kungakhathaliseki ukuthi ukuncipha kuyalingana, izivalo zibushelelezi, kanye namazinga okuphuka ayalawuleka. Kulesi simo, umsebe we-electron Ukushiswa kwemisebe (EB) kuvele njengobuchwepheshe obubalulekile kubakhiqizi bamafilimu e-POF ukuthuthukisa ukuhambisana komkhiqizo nokuqinisa ukuncintisana emakethe.

Amafilimu e-Polyethylene (PE) ayizinto zokupakisha ezisetshenziswa kakhulu emhlabeni jikelele. Kodwa-ke, isakhiwo sawo sama-molecule esiqondile sinciphisa izakhiwo ezibalulekile njengamandla omshini, ukumelana nokushisa, kanye nokumelana nokubhoboza. Njengoba imboni yokupakisha ithuthuka iye ezixazululweni ezilula, ezisebenza kahle kakhulu, nezingasetshenziswa kabusha, izinguquko zokuxuba zendabuko ziya ngokuya zinganele ukuhlangabezana nezidingo ezikhethekile.

Ubuchwepheshe bokushiswa kwemisebe ye-electron accelerator sebube yiwona mandla ashukumisayo okuguqula amafilimu e-PE kusuka "kuzinto ezijwayelekile" kuya "kuzinto ezisebenzayo." Ngokudala inethiwekhi exhumene enama-three-dimensional crosslinked phakathi kwamaketanga e-polymer, imisebe ye-electron kuthuthukisa kakhulu izakhiwo zefilimu ye-PE—ukuthuthukisa ukumelana nokubhoboza, ukumelana nokushisa, ukufana kokuncibilika, kanye nokusetshenziswa kabusha—ngaphandle kokushintsha ukwakheka kwesisekelo.

Amafilimu amaningi ahlanganisiwe kumele alinganisele ukuvalwa kokushisa, izakhiwo zokuvimbela, amandla, kanye nokubukeka—ngokuvamile ngenxa yesici esisodwa noma ngaphezulu. Amafilimu ezimboni anzima, ngakolunye uhlangothi, adinga ukumelana nokubhoboza, ukumelana nokudabuka, kanye nokuqina kwesimo sezulu, okuphoqa ukuhwebelana okubucayi phakathi kobukhulu nezindleko. Njengoba izidingo zamakhasimende zishintsha zibe “zincane,” “ziqinile,” futhi “zingasetshenziswa kabusha,” ukulungiswa kwezinto zendabuko akusahlangabezani nophawu.

Ukukhanya kwemisebe ye-electron Ukuxhumanisa kunikeza ikhambi lale "nxantathu engenakwenzeka" ezingeni lama-molecule. Lobu buchwepheshe abushintshi izinto eziyisisekelo kodwa kunalokho busebenzisa ama-electron anamandla aphezulu "ukushisela" amanethiwekhi anezilinganiso ezintathu phakathi kwamaketanga e-polymer. Le nqubo ikhulisa imiphumela yokusebenzisana kwezakhiwo ezinezingqimba eziningi futhi ithuthukisa kakhulu imikhawulo yokusebenza yamafilimu anemisebenzi enzima.

Njengoba isidingo sokudla okulungele ukudliwa kanye nokudla okulungisiwe siqhubeka nokukhula, ukubulala amagciwane okushisa okuphezulu sekuyindlela ebalulekile yokuqinisekisa ukuphepha kokudla kanye nokwandisa isikhathi sokuphila. Ukubulala amagciwane (85-95°C) kusetshenziswa kabanzi ekudleni okune-asidi ephansi njengobisi, amajusi, nobhiya, kuyilapho ukubulala amagciwane okushisa okuphezulu, okunomfutho ophezulu (121-135°C) kubalulekile enyameni, emikhiqizweni yesoya, kanye nokudla okunamaphrotheni amaningi okudinga ukungabi namagciwane okuhweba. Lokhu kwelashwa kokushisa kuqeda ngempumelelo amagciwane kodwa futhi kubeka izidingo ezibalulekile kumafilimu okupakisha - kumele agcine ubuqotho besakhiwo, ukuthembeka kokuvala, kanye nokuqina kobukhulu ngaphansi kwamazinga okushisa aphezulu.

Kodwa-ke, amafilimu e-thermoplastic endabuko anemikhawulo yemvelo ekumelaneni nokushisa. Isibonelo, i-polyethylene (PE) inephuzu lokuthambisa le-Vicat eliphakathi kuka-90-110°C futhi iqala ukuthambisa emazingeni okushisa angaphezu kuka-85°C. Nakuba i-polypropylene (PP) ingamelana namanzi abilayo, isabhekene nezingozi zokuguquguquka ezingaphezu kuka-121°C. Ubuchwepheshe bokuxhumanisa imisebe ye-electroniye yavela njengoshintsho olukhulu, yathuthukisa ukumelana nokushisa ezingeni lama-molecule futhi yabhekana nalezi zinselele ngempumelelo.

Emigqeni yokukhiqiza amaphakheji asheshayo, umzuzwana ngamunye ubalulekile uma kukhulunywa ngokusebenza kwefilimu. Ukuguquguquka kwesilinganiso sokuncishiswa kwamafilimu ancishisiwe okungaholela kumalebula angalingani kahle, ukupakisha okuxekethile, futhi ekugcineni, ukungasebenzi kahle kokukhiqiza. Uma ungqimba lwesivalo lulahlekelwa ukuvaleka kwalo kokushisa ngenxa yokungcoliswa uwoyela noma uthuli, kungabangela ukuvuza, ukwehluleka kwephakheji, kanye nesikhathi sokungasebenzi kokukhiqiza. Ezimbonini ezifana nokudla nokunakekelwa kwempilo, lapho ubuqotho bokupakisha bungaxoxiswana khona, ukufeza ukusebenza "okungaguquguquki" kubaluleke kakhulu kunokuba nezici "ezithuthukisiwe".

Izinto zendabuko ezisetshenziswa kumafilimu okuncipha kanye nezendlalelo zokuvala zivame ukubhekana nemikhawulo ngenxa yokunyakaza kokushisa kwamaketanga azo ama-molecule. Ukwehluka kwezinga lokushisa, isikhathi sokugcina, kanye nesivinini sokucubungula kungaholela ezinkingeni ezifana nokukhukhuleka kwesilinganiso sokuncipha, ukwehla kokuthamba, kanye namandla okuvala okushisa angaguquki. Ubuchwepheshe bokuxhumanisa imisebe ye-electronishintshe umdlalo ngokuvala isakhiwo samafilimu ezingeni lama-molecule, okwenza ukusebenza okuhlala njalo kube ngokoqobo.

Kusukela mhla ziyi-12 kuNcwaba 2026, uMthetho Wokupakishwa Nokupakishwa Kwemfucuza (PPWR) we-European Union uzosetshenziswa ngokugcwele, okudinga ukuthi konke ukupakisha okubekwe emakethe ye-EU kuphinde kusetshenziswe. Ngalolo suku, imikhawulo emisha ye-PFAS (izinto ze-perfluoroalkyl kanye ne-polyfluoroalkyl) ekupakishweni kokudla kuzoqala ukusebenza, lapho i-PFAS ngayinye ingadluli ku-25 ppb kanye nokuhlushwa okuphelele kungadluli ku-250 ppb. Ngaphezu kwalokho, ukuhlushwa okuphelele kwe-lead, i-cadmium, i-mercury, kanye ne-hexavalent chromium kuzokhawulelwa ngokuqinile ku-100 mg/kg. Okwamanje, indinganiso ye-GB 4806.10-2025 yaseShayina izoqala ukusebenza ngoSepthemba 2026, yehlise kakhulu umkhawulo wokufuduka kwe-bisphenol A kusuka ku-0.6 mg/kg kuya ku-0.05 mg/kg. UMthetho Wokupakishwa Kwepulasitiki Wokuxhumana Nokudla (EU) 2026/245 we-EU, oqala ukusebenza ngoFebhuwari 2026, uzophinde usebenzise imikhawulo eqinile yokufuduka kwezinto eziyisithupha ezintsha.

Njengoba imiqondo "yokupakisha okuhlanzekile" kanye "nomnotho ojikelezayo" ishintsha kusukela emizamweni yezimboni kuya ezidingweni eziphoqelekile, umsebe we-electronUbuchwepheshe bokukhanyisela ngemisebe (EB) buvelele. Ngezici zayo "ezingenazo izithako ezengeziwe, ezingenalutho, eziluhlaza, nezinekhabhoni ephansi", ubuchwepheshe be-EB buhlinzeka abakhiqizi bokupakisha ukudla ngesisombululo esivumelana kahle nemikhuba yokulawula yomhlaba wonke kokubili ukuphepha kanye nokusimama.

Embonini yokupakisha, amakhasimende anezidingo ezahlukahlukene neziqondile zokusebenza kwefilimu. Ezinye zidinga izakhiwo zokuvimbela eziphakeme kakhulu ukuze zandise isikhathi sokuphila kweshelufu, kanti ezinye zidinga ukuguquguquka okumangalisayo ukuze zivumelane nokwakheka kokupakisha okungajwayelekile, noma ikhono lokubekezelela izinqubo zokuhlanza ezishisa kakhulu. Izindlela zendabuko zokushintsha amafilimu, njengokuxuba, ukuxhumanisa okunezingqimba eziningi, kanye nokuxhumanisa ngamakhemikhali, zivame ukukhawulelwa amafomula aqinile, amafasitela enqubo emincane, kanye nemijikelezo yokulungisa emide, okwenza kube nzima ukuphendula ngokushesha nangokuphumelelayo esidingweni esikhulayo sezixazululo ezenziwe ngokwezifiso.

Umsebe we-electronUbuchwepheshe bokukhanyisela ngemisebe (i-e-beam) bunikeza indlela entsha nesebenza kahle kakhulu yokufeza "ukwenziwa ngokwezifiso okufunwayo" kwezakhiwo zefilimu. Busebenza "njengohlelo lokusebenza oluqondile," oluvumela abakhiqizi ukuthi balungise isakhiwo sefilimu ngaphandle kokushintsha indlela eyisisekelo yokwakheka. Ngokulawula ngokucophelela amapharamitha afana namandla, umthamo, kanye nendlela yokuskena, ukushiswa kwemisebe ye-e-beaminikeza izinga eliphezulu lokuguquguquka, okuvumela ukushintsha kusuka ekusebenzeni okujwayelekile kuya ekusebenzeni okwenziwe ngokwezifiso ngokunemba okumangalisayo.