Yakakwira zvipingamupinyi zvekurongedza zvinhu zvakakurumidza kuvandudzwa uye kushandiswa zvakanyanya muindasitiri yekurongedza kunyanya muindasitiri yekurongedza chikafu.Inobata basa mukuchengetedza kunaka kwechikafu, kuchengetedza kutsva, kuchengetedza flavour uye kuwedzera hupenyu hwesherufu.Kune akasiyana matekinoroji ekuchengetedza chikafu, senge vacuum kurongedza, gasi rekutamisa kurongedza, kuvhara deoxidizer kurongedza, kuomesa chikafu kurongedza, aseptic kuzadza packaging, kubika kurongedza, mvura inopisa yekuzadza kurongedza uye zvichingodaro.Mune akawanda eaya matekinoroji ekurongedza, yakanaka chipingamupinyi epurasitiki yekurongedza zvinhu zvinofanirwa kushandiswa.
Izvo zvakajairika zvakakwirira zvipingamupinyi zvemufirimu zvinhu ndezvinotevera:
1. PVDC Zvishandiso (Polyvinylidene Chloride)
Polyvinylidene chloride (PVDC) resin, inowanzo shandiswa seyakaumbwa zvinhu kana monomer zvinhu uye co-extruded firimu, ndiyo inonyanya kushandiswa yakakwirira chipingamupinyi kurongedza zvinhu.Kushandiswa kwePVDC yakavharwa firimu yakanyanya kukura.PVDC yakavharwa firimu ndiko kushandiswa kwepolypropylene (OPP), polyethylene terephthalate (PET) sechinhu chekutanga.Nekuda kwekushisa kwakanyanya kwekunyorovesa kwePVDC yakachena, kunyungudika kwePVDC kuri pedyo nekushisa kwayo kwekuparara, uye miscibility ine general plasticizer haina kunaka, kupisa kuumbwa kwakaoma uye kwakaoma kuiswa zvakananga.Iko kushandiswa chaiko kwePVDC firimu kunonyanya kuve iyo copolymer yevinylidene chloride (VDC) uye vinyl chloride (VC), pamwe ne acrylic methylene (MA) copolymerization yakagadzirwa kunyanya yakanaka barriers firimu.
2. Nylon Packaging Materials
Nylon yekurongedza zvinhu zvisati zvaitika - yakatwasuka shandisa "nylon 6".Asi "nylon 6" air tightness haina kunaka.Naironi (MXD6) yakagadzirwa kubva papolycondensation yem-dimethylamine uye adipic asidhi ine mhepo yakapetwa ka10 kupfuura "nylon 6", ukuwo iine kujeka kwakanaka uye kupinza kuramba.Inonyanya kushandiswa kune yakakwirira chipingamupinyi kurongedza firimu kune yakakwirira chipingamupinyi zvinodiwa zvechikafu chinochinjika kurongedza.Inotenderwa zvakare neFDA yehutsanana hwekudya.Chinhu chayo chikuru sefirimu ndechekuti chipingamupinyi hachiputsi nekukwira kwekunyorova.MuEurope, MXD6 naironi inoshandiswa zvakanyanya seimwe nzira yePVDC mafirimu nekuda kwenyaya dzine mukurumbira dzekuchengetedza nharaunda.
3. EVOH Zvishandiso
EVOH ndiyo inonyanya kushandiswa yakakwirira barriers zvinhu.
Mafirimu emhando dzechinhu ichi kuwedzera kune isiri-tensile mhando, kune maviri-nzira tensile mhando, aluminium evaporation type, adhesive coating type uye zvichingodaro.Mbiri - nzira yekutambanudza uye kupisa - inodzivirira zvigadzirwa zveaseptic kurongedza.
4. Inorganic Oxide Coated Firimu
PVDC, iyo inoshandiswa zvakanyanya sechivharo chepamusoro chekuisa zvinhu, ine tsika yekutsiviwa nezvimwe zvekurongedza nekuti tsvina yayo inoburitsa HCl kana yapiswa.Semuenzaniso, iyo inonzi yakavharidzirwa firimu yakagadzirwa mushure mekuputirwa kweSiOX (silicon oxide) pafirimu yemamwe ma substrates yakabhadharwa, kuwedzera kune silicon oxide coating film, kune alumina evaporation film.Iyo gasi-yakasimba kuita kwejasi kwakafanana neiyo yesilicon oxide coating inowanikwa nenzira imwecheteyo.
Mumakore achangopfuura, multilayer composite, blending, copolymerization uye evaporation matekinoroji akagadzirwa nekukurumidza.High barrier packaging materials senge vinyl vinyl glycol copolymer (EVOH), polyvinylidene chloride (PVDC), polyamide (PA), polyethylene terephthalate (PET) multilayer composite zvinhu uye silicon oxide compound evaporation firimu yakagadziridzwa, kunyanya zvinotevera zvigadzirwa zvakanyanya. ziso-kubata: MXD6 polyamide kurongedza zvinhu;Polyethylene glycol naphthalate (PEN);Silicon oxide evaporation firimu, nezvimwewo.
Nguva yekutumira: Kurume-09-2023