Ifilimu ye-multilayer coextrusion
Ngokuphathelele kwiintshayelelo zeefektri, iikowuti, ii-MOQ, ukuhanjiswa, iisampuli zasimahla, uyilo lwemisebenzi yobugcisa, imigaqo yokuhlawula, iinkonzo zasemva kokuthengisa njl.njl. Nceda ucofe i-FAQ ukuze ube nazo zonke iimpendulo odinga ukuzazi.
Cofa ii-FAQsQingdao Advanmatch Packaging's multi-layer co-extruded composite films ihlulwe ngokubanziumaleko wesiseko, umaleko osebenzayo kunye nomgangatho wokuncamathelisa ngokomsebenzi womaleko ngamnye wefilimu kungakhathaliseki inani leeleya.
Umaleko wesiseko: Ngokubanzi, iileya zangaphakathi nangaphandle zefilimu edibeneyo kufuneka ibe neempawu ezilungileyo zomzimba kunye nezomatshini, iipropati zokubumba kunye nokucubungula kunye nomgangatho wokutywinwa kwe-thermal.Inomsebenzi olungileyo wokutywinwa kobushushu kunye nokusebenza kwe-welding yobushushu ngexabiso eliphantsi.Okwangoku, ikwanenkxaso efanelekileyo kunye nefuthe lokugcinwa kwinqanaba elisebenzayo kunye neyona nto iphezulu kwi-membrane edibeneyo emisela ukuqina okupheleleyo kwe-membrane edibeneyo.Izinto ezisisiseko ziyi-PE, PP, EVA, PET kunye ne-PS.
Umaleko osebenzayo:Umaleko osebenzayo we-coextrusion wefilimu yokupakisha ubukhulu becala ngumaleko wesithintelo, ophakathi kwefilimu ehlanganisiweyo yomaleko amaninzi.Ubukhulu becala isebenzisa i-resin zokuthintela ezifana ne-EVOH, i-PVDC, i-PVA, i-PA, i-PET, njl. .
EVOH
I-ethylene-vinyl alcohol copolymer luhlobo lwemathiriyeli yepolymer edibanisa ukuqhubekeka kwe-ethylene polymer kunye nomqobo wegesi we-ethylene alcohol polymer.Icace kakhulu kwaye ineglosi elungileyo.I-EVOH inesithintelo esihle kakhulu ngokuchasene negesi kunye neoyile.Amandla ayo oomatshini, ukuguquguquka, ukumelana nokunxiba, ukumelana nokubanda kunye nokuqina komphezulu kugqwesileyo kwaye inomsebenzi ogqwesileyo wokulungisa.Ipropathi yesithintelo se-EVOH ixhomekeke kumxholo we-ethylene.Iimveliso ezipakishwe ngezinto ze-EVOH ziquka i-condiments, iimveliso zobisi, iimveliso zenyama, iimveliso zeshizi, njl.
PVDC
I-Polyvinylidene chloride i-polymer ye-vinylidene chloride (1,1-dichlorethylene).Iqondo lokushisa lokubola kwe-homopolymer polyvinylidene chloride liphantsi kunendawo yokunyibilika kwayo, ngoko kunzima ukunyibilika.Ngoko ke, i-PVDC njengento yokupakisha i-copolymer ye-vinylidene chloride kunye ne-vinyl chloride ene-gas tightness, ukumelana nokugqwala, ukuprintwa okulungileyo kunye neempawu zokutywinwa kokushisa.Ekuqaleni, yayisetyenziselwa ukupakishwa komkhosi.Kodwa yaqala ukusetyenziswa njengefilimu yokugcina ukutya ngeminyaka yoo-1950.Ingakumbi upakisho olukhawulezayo lokukhenkceza nolugcina ulutsha oluye lwaphuhliswa ngobuninzi ngokukhawuleziswa kobugcisa bokupakisha bale mihla kunye nesantya sobomi babantu bale mihla, uguqulo lwabapheki be-microwave kunye nokwandiswa kwexesha lokutya kunye namayeza okwenza usetyenziso lwePVDC ludume ngakumbi.I-PVDC inokwenziwa ibe yifilim ebhityileyo ngokugqithisileyo, ngaloo ndlela inciphisa isixa sezinto ezikrwada kunye neendleko zokupakisha, Isasebenza nanamhlanje.
Umaleko wokuncamathelisa
Ngenxa yokungahambelani kakuhle kwezinye iireyini zesiseko kunye neeresina zomaleko ezisebenzayo, kuyafuneka ukuba kubekwe ezinye iileyile zokuncamathelisa phakathi kwezi zimbini zomaleko ukuze zidlale indima yeglu, ukuze zenze ifilimu edibeneyo "edibeneyo".I-adhesive layer isebenzisa intlaka yokuncamathelisa, esetyenziswa ngokuqhelekileyo yi maleic anhydride grafted polyolefin kunye ne ethylene-vinyl acetate copolymer (EVA).
Iimpawu ezininzi zefilimu ezidityanisiweyo:
1. Ipropati yesithintelo esiphezulu: Ukusetyenziswa kwe-polymer ye-multilayer endaweni ye-polymerization ye-monolayer inokuphucula kakhulu ipropati yesithintelo sefilimu kwaye ifezekise umphumo ophezulu we-barrier oksijini, amanzi, i-carbon dioxide, i-odor, njl. Ngokukodwa xa i-EVOH kunye ne-PVDC zikhethwa njenge izixhobo zokuthintelwa, ukuhanjiswa kweoksijini kunye nokuhanjiswa komphunga wamanzi ngokucacileyo kuphantsi kakhulu.
2. Umsebenzi owomeleleyo: Ngenxa yokukhetha okubanzi kwefilimu ye-multilayer ekusetyenzisweni kwezixhobo, iintlobo ezahlukeneyo zeerasi zinokukhethwa ngokusetyenziswa kwezixhobo eziluncedo zibonakalisa ngokupheleleyo imisebenzi yamanqanaba ahlukeneyo, ukuze kuphuculwe ukusebenza kwe-co. -ifilimu ye-extrusion, efana nokumelana ne-oyile, ukuxhathisa ukufuma, ukumelana nokupheka kobushushu obuphezulu, ukuxhathisa okubandayo okubandayo.Ingasetyenziselwa ukupakishwa kwe-vacuum, ukupakisha okungenazintsholongwane kunye nokupakishwa kwe-inflatable.
3. Iindleko eziphantsi: Xa kuthelekiswa nokupakishwa kweglasi, ukupakishwa kwe-aluminium foil kunye nezinye iiplastiki ziyakwazi ukufezekisa umphumo ofanayo womqobo.Ngexesha elifanayo, ifilimu edibeneyo edibeneyo ineenzuzo ezinkulu kwiindleko.Ngokomzekelo, ukuze kuphunyezwe umphumo ofanayo wokuthintela, ifilimu edibeneyo edibeneyo yesixhenxe ineenzuzo ezinkulu kwiindleko kunefilimu ye-five-layer co-extruded.Ngenxa yokwenziwa kwayo okulula, iindleko zeemveliso zefilimu eziveliswayo zingancitshiswa nge-10-20% xa kuthelekiswa neendleko zefilimu edibeneyo eyomileyo kunye nezinye iifilimu ezidibeneyo.
4. Uyilo lwesakhiwo esiguquguqukayo: yamkela uyilo lwesakhiwo esahlukileyo ukuhlangabezana neemfuno zokuqinisekisa umgangatho weemveliso ezahlukeneyo.
