Isifinyezo: Leli phepha lihlaziya inkinga yamaphuzu amhlophe amafilimu ahlanganisiwe e-PET/VMCPP kanye ne-PET/VMPET/PE uma ehlanganiswa, bese lethula izixazululo ezifanele.
Ifilimu ehlanganisiwe ehlanganiswe nge-aluminium iyinto yokupakisha ethambile ene-"aluminium luster" eyakhiwe ngamafilimu ahlanganisiwe ahlanganiswe nge-aluminium (ngokuvamile i-VMPET/VMBOPP, i-VMCPP/VMPE, njll., phakathi kwawo i-VMPET ne-VMCPP yizona ezisetshenziswa kakhulu) ngamafilimu epulasitiki asobala. Isetshenziswa ekupakisheni ukudla, imikhiqizo yezempilo, izimonyo, neminye imikhiqizo. Ngenxa yokukhanya kwayo okuhle kakhulu kwensimbi, ukulula, ukuthengeka, kanye nokusebenza okuhle kokuvimbela, isetshenziswe kabanzi (izakhiwo ezingcono zokuvimbela kunamafilimu epulasitiki ahlanganisiwe, eshibhile futhi elula kunamafilimu e-aluminium-plastic ahlanganisiwe). Kodwa-ke, amabala amhlophe avame ukuvela ngesikhathi sokukhiqizwa kwamafilimu enhlanganisela ahlanganiswe nge-aluminium. Lokhu kubonakala kakhulu emikhiqizweni yamafilimu ehlanganisiwe enezakhiwo ze-PET/VMCPP kanye ne-PET/VMPET/PE.
1. Izimbangela nezixazululo “zamabala amhlophe”
Incazelo yento "emhlophe": Kunezindawo ezimhlophe ezisobala ekubukekeni kwefilimu ehlanganisiwe, ezingasatshalaliswa ngokungahleliwe futhi zibe nobukhulu obufanayo. Ikakhulukazi kumafilimu ahlanganisiwe angaphrintiwe kanye namafilimu ahlanganisiwe ayinki emhlophe noma ayinki enombala okhanyayo, kusobala kakhulu.
1.1 Ukucindezeleka kobuso okunganele ohlangothini lwe-aluminium plating lwe-aluminium coating.
Ngokuvamile, ukuhlolwa kokucindezelwa kobuso kufanele kwenziwe ebusweni be-corona befilimu esetshenziswa ngaphambi kokuhlanganiswa, kodwa ngezinye izikhathi ukuhlolwa kokumbozwa kwe-aluminium akunakwa. Ikakhulukazi kumafilimu e-VMCPP, ngenxa yokuthi kungenzeka ukuthi kube nokuna kwezithasiselo ezincane zama-molecule kufilimu yesisekelo se-CPP, ubuso obumbozwe nge-aluminium bamafilimu e-VMCPP agcinwe isikhathi esithile buvame ukuba nokucindezelwa okunganele.
1.2 Ukungalingani kahle kwe-glue
Izinti ezisekelwe ku-solvent kufanele zikhethe ukuhlushwa kwesisombululo sokusebenza esifanele ngokwencwadi yemiyalelo yomkhiqizo ukuqinisekisa ukulingana kwe-glue okuhle kakhulu. Futhi ukulawulwa kokuhlolwa kwe-viscosity kufanele kuqaliswe ngesikhathi senqubo yokukhiqiza eqhubekayo. Lapho i-viscosity ikhula kakhulu, izinti ezincibilikayo kufanele zengezwe ngokushesha. Amabhizinisi anezimo angakhetha imishini ye-glue ye-pump ezenzakalelayo evaliwe. Izinga lokushisa elifanele lokushisa lezinti ezincibilikayo ezingenayo i-solvent kufanele likhethwe ngokwencwadi yemiyalelo yomkhiqizo. Ngaphezu kwalokho, uma kucatshangelwa inkinga yesikhathi sokusebenza esingenayo i-solvent, ngemva kwesikhathi eside, i-glue e-roller yokulinganisa kufanele ikhishwe ngesikhathi esifanele.
1.3 Inqubo embi yokuhlanganiswa
Ngezakhiwo ze-PET/VMCPP, ngenxa yobukhulu obuncane kanye nokunwebeka okulula kwefilimu ye-VMCPP, ingcindezi ye-lamination roller akufanele ibe phezulu kakhulu ngesikhathi se-lamination, futhi ingcindezi yokugoqa akufanele ibe phezulu kakhulu. Kodwa-ke, uma isakhiwo se-PET/VMCPP sihlanganisiwe, ngenxa yokuthi ifilimu ye-PET iyifilimu eqinile, kuyalulekwa ukwandisa ingcindezi ye-laminating roller kanye nengcindezi yokugoqa ngokufanele ngesikhathi se-composite.
Amapharamitha enqubo ehlanganisiwe ahambisanayo kufanele akhiwe ngokusekelwe esimweni semishini ehlanganisiwe lapho izakhiwo ezahlukene zokumboza i-aluminium ziyinhlanganisela.
1.4 Izinto zakwamanye amazwe ezingena efilimini ehlanganisiwe ezibangela “amabala amhlophe”
Izinto zakwamanye amazwe ikakhulukazi zifaka uthuli, izinhlayiya zerabha, noma udoti. Uthuli kanye nodoti kuvela kakhulu eshabhu, futhi kungenzeka kakhulu ukuthi kwenzeke uma ukuhlanzeka kweshabhu kungalungile. Izinhlayiya zerabha zivela kakhulu kumadiski erabha, ama-coating roller, noma ama-bonding roller. Uma isitshalo esihlanganisiwe singeyona ishabhu engenalo uthuli, kufanele futhi sizame ukuqinisekisa ukuhlanzeka nokuhleleka kweshabhu elihlanganisiwe, sifake imishini yokususa uthuli noma yokuhlunga (idivayisi yokumboza, i-guide roller, idivayisi yokumboza nezinye izingxenye) zokuhlanza. Ikakhulukazi i-coating roller, i-scraper, i-flatening roller, njll. kufanele ihlanzwe njalo.
1.5 Umswakama ophezulu endaweni yokukhiqiza uholela “emabala amhlophe”
Ikakhulukazi ngesikhathi semvula, lapho umswakama we-workshop ungama-≥ 80%, ifilimu ehlanganisiwe ithambekele kakhulu enkingeni "yamabala amhlophe". Faka imitha yokushisa nomswakama e-workshop ukuze urekhode izinguquko ekushiseni nasekumswakama, futhi ubale amathuba okuvela kwamabala amhlophe. Amabhizinisi anezimo angacabangela ukufaka imishini yokususa umswakama. Ezakhiweni ezihlanganisiwe ezinezingqimba eziningi ezinezakhiwo ezinhle zokuvimbela, kubalulekile ukucabanga ngokumisa ukukhiqiza noma ukukhiqiza izakhiwo ezihlanganisiwe ezinezingqimba eziningi noma ezingapheli. Ngaphezu kwalokho, ngenkathi kuqinisekiswa ukusebenza okuvamile kwe-glue, kunconywa ukunciphisa inani le-ejenti yokwelapha esetshenziswa ngendlela efanele, ngokuvamile ngo-5%.
1.6 Ubuso obunamathelayo
Uma kungekho ukuphazamiseka okusobala okutholakalayo futhi inkinga “yamabala amhlophe” ingenakuxazululwa, inqubo yokumboza ohlangothini lokumboza nge-aluminium ingacatshangelwa. Kodwa le nqubo inemikhawulo ebalulekile..Ikakhulukazi uma i-VMCPP noma i-VMPET aluminium coating ifakwa ekushiseni nasekucindezelekeni kuhhavini, ithambekele ekuguqukeni kokuthambekela, futhi inqubo yokuhlanganiswa idinga ukulungiswa. Ngaphezu kwalokho, amandla okuxebuka kwesendlalelo se-aluminium plating angase anciphe.
1.7 Incazelo ekhethekile yesimo lapho kungekho khona ukuphazamiseka okutholakale ngemva kokuvalwa, kodwa “amabala amhlophe” avele ngemva kokuvuthwa:
Lolu hlobo lwenkinga luvame ukwenzeka ezakhiweni ze-membrane ezihlanganisiwe ezinezakhiwo ezinhle zokuvimbela. Ezikhiweni ze-PET/VMCPP kanye ne-PET/VMPET/PE, uma isakhiwo se-membrane siqinile, noma uma usebenzisa amafilimu e-KBOPP noma e-KPET, kulula ukukhiqiza “amabala amhlophe” ngemva kokuguga.
Amafilimu ahlanganisiwe anezivikelo eziphakeme zezinye izakhiwo nawo asengozini yenkinga efanayo. Izibonelo zifaka phakathi ukusebenzisa i-foil ye-aluminium ejiyile noma amafilimu amancane njenge-KNY.
Isizathu esiyinhloko salesi simo "sebala elimhlophe" ukuthi kukhona ukuvuza kwegesi ngaphakathi kwe-composite membrane. Le gesi ingaba ukugcwala kwezinyibilikisi ezisele noma ukugcwala kwegesi ye-carbon dioxide ekhiqizwa ukusabela phakathi kwe-ejenti yokwelapha kanye nomhwamuko wamanzi. Ngemva kokugcwala kwegesi, ngenxa yezakhiwo ezinhle zokuvimbela ifilimu ehlanganisiwe, ayikwazi ukukhishwa, okuholela ekubonakaleni "kwamabala amhlophe" (amabhamuza) kungqimba oluhlanganisiwe.
Isixazululo: Uma uhlanganisa i-glue esekelwe ku-solvent, amapharamitha enqubo afana nokushisa kwehhavini, ivolumu yomoya, kanye nokucindezela okungekuhle kufanele kubekwe kahle ukuqinisekisa ukuthi akukho solvent esele engqimbeni ye-glue. Lawula umswakama eshabhu bese ukhetha uhlelo lokumboza i-glue oluvaliwe. Cabanga ukusebenzisa i-ejenti yokwelapha engakhiqizi amabhamuza. Ngaphezu kwalokho, uma usebenzisa i-glue esekelwe ku-solvent, kuyadingeka ukuhlola okuqukethwe komswakama ku-solvent, ngesidingo sokuqukethwe komswakama ≤ 0.03%.
Lokhu okungenhla kuyisingeniso sesimo "samabala amhlophe" kumafilimu ahlanganisiwe, kodwa kunezizathu ezahlukahlukene ezingabangela izinkinga ezinjalo ekukhiqizweni kwangempela, futhi kuyadingeka ukwenza izahlulelo kanye nentuthuko ngokusekelwe esimweni sangempela sokukhiqiza.
Isikhathi sokuthunyelwe: Disemba 11-2023