Izinto zokupakisha zomqobo eziphezulu ziye zaphuhliswa ngokukhawuleza kwaye zisetyenziswa ngokubanzi kwishishini lokupakisha ngakumbi kwishishini lokupakisha ukutya.Idlala indima ekugcinweni komgangatho wokutya, ukugcinwa kokutsha, ukugcinwa kwencasa kunye nokwandiswa kobomi beshelufu.Kukho iitekhnoloji ezahlukeneyo zokugcina ukutya, njengokupakishwa kwe-vacuum, ukupakishwa kokufuduswa kwegesi, ukutywina ukupakishwa kwe-deoxidizer, ukupakisha ukomisa ukutya, ukupakisha kokuzalisa i-aseptic, ukupakisha ukupheka, ukupakishwa kokuzalisa ulwelo kunye nokunye.Kuninzi lwezi teknoloji zokupakisha, kufuneka kusetyenziswe izixhobo zokupakisha zeplastiki ezifanelekileyo.
Ezona zinto zixhaphakileyo ziphezulu izixhobo zefilimu zezithintelo zezi zilandelayo:
1. Izinto zePVDC (i-Polyvinylidene Chloride)
I-Polyvinylidene chloride (PVDC) resin, ehlala isetyenziswa njengezinto ezidibeneyo okanye izinto ze-monomer kunye nefilimu edibeneyo edibeneyo, yeyona nto isetyenziswa kakhulu kwizinto zokupakisha zesithintelo.Ukusetyenziswa kwefilimu egqunywe ngePVDC kukhulu kakhulu.Ifilimu edibeneyo ye-PVDC kukusetyenziswa kwe-polypropylene (OPP), i-polyethylene terephthalate (PET) njengento esisiseko.Ngenxa yokushisa okuphezulu kokuthambisa kwe-PVDC ecocekileyo, ukunyibilika kwe-PVDC kusondele kwiqondo lokushisa lokubola, kwaye i-miscibility kunye ne-plasticizer jikelele ihluphekile, ukubunjwa kokufudumala kunzima kwaye kunzima ukusetyenziswa ngokuthe ngqo.Ukusetyenziswa kwefilimu ye-PVDC ubukhulu becala yi-copolymer ye-vinylidene chloride (VDC) kunye ne-vinyl chloride (VC), kunye ne-acrylic methylene (MA) i-copolymerization eyenziwe ngefilimu yokuthintela ngokukhethekileyo.
2. Izinto zokuPakisha inayiloni
Izinto zokupakisha zenayiloni ngaphambili - ukusetyenziswa ngokuthe ngqo "inayiloni 6".Kodwa "inayiloni 6" yokuqina yomoya ayifanelekanga.Inayiloni (MXD6) eyenziwe kwi-polycondensation ye-m-dimethylamine kunye ne-adipic acid ngamaxesha angama-10 ngaphezu kwe-"nylon 6", ngelixa iphinde ibe nokungafihli kakuhle kunye nokuchasana kwe-puncture.Isetyenziswa kakhulu kwifilimu yokupakisha isithintelo esiphakamileyo kwiimfuno zesithintelo esiphakamileyo sokupakishwa okuguquguqukayo kokutya.Ikwavunywa yi-FDA yococeko lokutya.Eyona nto inkulu njengefilimu kukuba umqobo awuwi ngokunyuka komswakama.EYurophu, inayiloni ye-MXD6 isetyenziswa ngokubanzi njengenye ifilimu ye-PVDC ngenxa yemiba ebalaseleyo yokhuseleko lokusingqongileyo.
3. Izinto ze-EVOH
I-EVOH sesona sixhobo sisetyenziswa kakhulu sesithintelo esiphezulu.
Iindidi zefilimu zolu lwazi ukongeza kuhlobo olungagungqiyo, kukho uhlobo lwe-tensile yeendlela ezimbini, uhlobo lwe-aluminium evaporation, uhlobo lokunamathelisa okuncamathelayo njalo njalo.Iindlela ezimbini zokolula kunye nobushushu - iimveliso ezixhathisayo zokupakishwa kwe-aseptic.
4. Ifilimu ene-Inorganic oxide eNgqunyiweyo
I-PVDC, esetyenziswa ngokubanzi njengento yokupakisha isithintelo esiphezulu, inomkhwa wokutshintshwa kwezinye izinto zokupakisha kuba inkunkuma yayo iya kuvelisa iHCl xa itshiswa.Ngokomzekelo, ifilimu ebizwa ngokuba yi-coated film eyenziwe emva kokugquma kwe-SiOX (i-silicon oxide) kwifilimu yezinye ii-substrates inikwe ingqalelo, ngaphezu kwefilimu yokugquma i-silicon oxide, kukho ifilimu ye-alumina evaporation.I-gas-tight performance of the coating iyafana naleyo ye-silicon oxide coating efunyenwe ngendlela efanayo.
Kwiminyaka yakutshanje, i-multilayer composite, ukudibanisa, i-copolymerization kunye ne-evaporation teknoloji iphuhliswe ngokukhawuleza.Izinto zokupakisha zesithintelo eziphezulu ezifana ne-vinyl vinyl glycol copolymer (EVOH), i-polyvinylidene chloride (PVDC), i-polyamide (PA), i-polyethylene terephthalate (PET) imathiriyeli edibeneyo ye-multilayer kunye ne-silicon oxide ekhompawundi yokuphuphuma kwefilimu iye yaphuhliswa ngakumbi, ngakumbi ezi mveliso zilandelayo zingaphezulu. ukubamba amehlo: izinto zokupakisha ze-MXD6 polyamide;I-polyethylene glycol naphthalate (PEN);Ifilimu yeSilicon oxide evaporation, njl.
Ixesha lokuposa: Mar-09-2023