Ibikoresho byo gupakira inzitizi ndende byatejwe imbere byihuse kandi bikoreshwa cyane mu nganda zipakira cyane cyane mu nganda zipakira ibiryo.Ifite uruhare mukuzigama ubuziranenge bwibiribwa, kubungabunga ibishya, kubungabunga uburyohe no kongera ubuzima.Hariho tekinoloji zitandukanye zo kubungabunga ibiryo, nko gupakira vacuum, gupakira gaze kwimura gaze, gufunga deoxidizer, gupakira ibiryo, gupakira ibyokurya bya aseptike, gupakira guteka, gupakira ibintu byuzuye ubushyuhe hamwe nibindi.Muri byinshi muri tekinoroji yo gupakira, hagomba gukoreshwa ibikoresho byiza byo gupakira plastike.
Ibikoresho byinshi bya barrière yibikoresho ni nkibi bikurikira:
1. Ibikoresho bya PVDC (Polyvinylidene Chloride)
Polyvinylidene chloride (PVDC) resin, ikoreshwa nkibikoresho byinshi cyangwa ibikoresho bya monomer hamwe na firime hamwe, hamwe nibikoresho bikoreshwa cyane bipakira inzitizi.Gukoresha firime ya PVDC nini cyane.PVDC isize firime ni ugukoresha polypropilene (OPP), polyethylene terephthalate (PET) nkibikoresho fatizo.Bitewe n'ubushyuhe bwo hejuru bworoshye bwa PVDC yera, gukomera kwa PVDC byegereye ubushyuhe bwayo, kandi kutumvikana hamwe na plasitiki rusange ni bibi, kubumba ubushyuhe biragoye kandi biragoye gukoreshwa muburyo butaziguye.Imikoreshereze nyayo ya firime ya PVDC ahanini ni kopolymer ya vinylidene chloride (VDC) na vinyl chloride (VC), hamwe na methylene ya acrylic methylene (MA) ikozwe muri firime nziza cyane.
2. Ibikoresho byo gupakira Nylon
Ibikoresho byo gupakira Nylon mbere - koresha neza "nylon 6".Ariko "nylon 6" gukomera kwikirere ntabwo ari byiza.Nylon (MXD6) ikozwe muri polycondensation ya m-dimethylamine na acide adipic iruta ikirere inshuro 10 kurusha "nylon 6", mugihe ifite kandi gukorera mu mucyo no kurwanya gucumita.Ahanini ikoreshwa kuri firime yo gupakira hejuru ya barrière isabwa cyane kubiribwa byoroshye gupakira.Byemejwe kandi na FDA kubijyanye nisuku yibiribwa.Ikintu kinini kiranga firime ni uko bariyeri itagwa hamwe no kuzamuka kwinshi.Mu Burayi, MXD6 nylon ikoreshwa cyane nk'uburyo bwa firime ya PVDC kubera ibibazo bikomeye byo kurengera ibidukikije.
3. Ibikoresho bya EVOH
EVOH nikintu gikoreshwa cyane murwego rwo hejuru.
Ubwoko bwa firime yibi bikoresho usibye ubwoko butari bwo, hari ubwoko bubiri bwikurikiranya, ubwoko bwa aluminiyumu ihumeka, ubwoko bwa coating adhesive nibindi.Babiri - inzira irambuye n'ubushyuhe - ibicuruzwa birwanya gupakira aseptic.
4. Firime ya Oxide idafite ingufu
PVDC, ikoreshwa cyane nkibikoresho byo gupakira inzitizi ndende, ifite imyumvire yo gusimburwa nibindi bikoresho bipfunyika kuko imyanda yayo izatanga HCl igihe yatwitse.Kurugero, firime yiswe coated yakozwe nyuma yo gutwikirwa SiOX (silicon oxyde) kuri firime yandi substrate yitabwaho, usibye firime ya silicon oxyde, hariho firime ya alumina.Imikorere ya gazi ikora neza ni kimwe nki ya silikoni ya okiside ya silicon yabonetse muburyo bumwe.
Mu myaka yashize, ikorana buhanga, kuvanga, copolymerisation hamwe nikoranabuhanga ryuka ryateye imbere byihuse.Ibikoresho byo gupakira inzitizi nyinshi nka vinyl vinyl glycol copolymer (EVOH), polyvinylidene chloride (PVDC), polyamide (PA), polyethylene terephthalate (PET) ibikoresho byinshi bigizwe na firime ya silicon oxyde ivangwa na firime, cyane cyane ibicuruzwa bikurikira ni byinshi ijisho ryiza: MXD6 ibikoresho byo gupakira polyamide;Polyethylene glycol naphthalate (PEN);Filime ya silicon oxyde, nibindi,
Igihe cyo kohereza: Werurwe-09-2023