Izinto zokupakisha eziphakeme kakhulu ziye zathuthukiswa ngokushesha futhi zasetshenziswa kabanzi embonini yokupakisha ikakhulukazi embonini yokupakisha ukudla.Idlala indima ekulondolozweni kwekhwalithi yokudla, ukulondoloza ubusha, ukugcinwa kokunambitheka kanye nokwelulwa kwempilo yeshalofu.Kunobuchwepheshe obuhlukahlukene bokugcina ukudla, njengokupakisha kwe-vacuum, ukupakisha kokufuduka kwegesi, ukufaka uphawu kwe-deoxidizer, ukupakisha okomisa ukudla, ukupakisha kokugcwalisa i-aseptic, ukupakisha ukupheka, ukupakisha okushisayo okushisayo nokunye.Kwabaningi balobu buchwepheshe bokupakisha, izinto zokupakisha zepulasitiki ezinhle zokuvimbela kufanele zisetshenziswe.
Izinto ezivame kakhulu zefilimu ye-barrier high zimi kanje:
1. Izinto ze-PVDC (i-Polyvinylidene Chloride)
I-Polyvinylidene chloride (PVDC) resin, evame ukusetshenziswa njengento eyinhlanganisela noma impahla ye-monomer kanye nefilimu e-co-extruded, iyizinto ezisetshenziswa kakhulu zokupakisha izithiyo eziphezulu.Ukusetshenziswa kwefilimu ehlanganisiwe ye-PVDC kukhulu kakhulu.Ifilimu ehlanganisiwe ye-PVDC ukusetshenziswa kwe-polypropylene (OPP), i-polyethylene terephthalate (PET) njengento eyisisekelo.Ngenxa yokushisa okuphezulu kokuthambisa kwe-PVDC ehlanzekile, ukuncibilika kwe-PVDC kuseduze nokushisa kwayo kokubola, futhi ukungezwani ne-plasticizer evamile kumpofu, ukubunjwa kokushisa kunzima futhi kunzima ukufakwa ngokuqondile.Ukusetshenziswa kwangempela kwefilimu ye-PVDC ikakhulukazi i-copolymer ye-vinylidene chloride (VDC) ne-vinyl chloride (VC), kanye ne-acrylic methylene (MA) copolymerization eyenziwe ngefilimu enhle kakhulu yokuvimbela.
2. Izinto Zokufaka Inayiloni
Izinto zokupakisha inayiloni ngaphambili - ukusetshenziswa okuqondile "inayiloni 6".Kodwa "inayiloni 6" yokuqina komoya ayilungile.Inayiloni (MXD6) eyenziwe nge-polycondensation ye-m-dimethylamine kanye ne-adipic acid inomoya ophindwe ka-10 kune-"nylon 6", kuyilapho futhi inokungafihli okuhle nokungabhoboki.Ikakhulukazi isetshenziselwa ifilimu yokupakisha isithiyo esiphezulu ngezidingo zesithiyo esiphezulu sokupakisha okuguquguqukayo kokudla.Igunyazwe futhi yi-FDA ngokuhlanzeka kokudla.Isici sayo esikhulu njengefilimu ukuthi umgoqo awuwi ngokukhuphuka komswakama.E-Europe, inayiloni ye-MXD6 isetshenziswa kabanzi njengenye indlela yamafilimu e-PVDC ngenxa yezinkinga ezivelele zokuvikela imvelo.
3. EVOH Materials
I-EVOH iyinto esetshenziswa kakhulu kunazo zonke isithiyo esiphezulu.
Izinhlobo zefilimu zalesi sici ngaphezu kohlobo olungaqinile, kunezinhlobo ezimbili ze-tensile, uhlobo lwe-aluminium evaporation, uhlobo lwe-adhesive enamathela njalonjalo.Izindlela ezimbili ezinwebekayo nokushisa - imikhiqizo engazweli yokupakishwa kwe-aseptic.
4. Ifilimu Ehlanganisiwe Ye-Oxygen
I-PVDC, esetshenziswa kakhulu njengento yokupakisha isithiyo esiphezulu, inomkhuba wokuthi kushintshwe ezinye izinto zokupakisha ngoba udoti wayo uzokhiqiza i-HCl uma ishisiwe.Isibonelo, ifilimu ebizwa ngokuthi i-coated eyenziwe ngemuva kokumbozwa kwe-SiOX (i-silicon oxide) kwifilimu yamanye ama-substrates inakiwe, ngaphezu kwefilimu yokugcoba i-silicon oxide, kunefilimu yokuhwamuka kwe-alumina.Ukusebenza kwe-gas-tight of the coating kuyafana nalokho kwe-silicon oxide coating etholwe ngendlela efanayo.
Eminyakeni yamuva nje, ubuchwepheshe be-multilayer composite, blending, copolymerization kanye nobuchwepheshe bokuhwamuka buthuthuke ngokushesha.Izinto zokupakisha eziphakeme kakhulu ezifana ne-vinyl vinyl glycol copolymer (EVOH), i-polyvinylidene chloride (PVDC), i-polyamide (PA), i-polyethylene terephthalate (PET) izinto eziyinhlanganisela ye-multilayer kanye nefilimu yokuhwamuka kwe-silicon oxide iye yathuthukiswa, ikakhulukazi le mikhiqizo elandelayo ingaphezulu. okudonsa amehlo: izinto zokupakisha ze-MXD6 polyamide;I-polyethylene glycol naphthalate (PEN);Ifilimu ye-Silicon oxide evaporation, njll.
Isikhathi sokuthumela: Mar-09-2023