Isishwankathelo: Eli phepha lihlalutya ingxaki ye-white point yeefilimu ezidityanisiweyo ze-PET/VMCPP kunye ne-PET/VMPET/PE xa zidityanisiwe, kwaye lazisa izisombululo ezifanelekileyo.
Ifilimu edityanisiweyo egqunywe nge-aluminium yimpahla yokupakisha ethambileyo ene-"aluminium luster" eyenziwe ziifilimu ezidityanisiweyo ezigqunywe nge-aluminium (ngokubanzi i-VMPET/VMBOPP, i-VMCPP/VMPE, njl.njl., apho i-VMPET kunye ne-VMCPP zezona zisetyenziswa kakhulu) ngeefilimu zeplastiki ezicacileyo. Isetyenziswa ekupakisheni ukutya, iimveliso zempilo, izinto zokuthambisa, kunye nezinye iimveliso. Ngenxa yokukhanya kwayo okugqwesileyo kwesinyithi, ukulula, ukufikeleleka, kunye nokusebenza kakuhle kokuthintela, isetyenzisiwe kakhulu (iipropati ezingcono zokuthintela kuneefilimu zeplastiki ezidityanisiweyo, ezingabizi kakhulu kwaye zikhaphukhaphu kuneefilimu ezidityanisiweyo ze-aluminium-plastic). Nangona kunjalo, amabala amhlophe adla ngokuvela ngexesha lokuveliswa kweefilimu ezidityanisiweyo ezigqunywe nge-aluminium. Oku kubonakala ngakumbi kwiimveliso zeefilimu ezidityanisiweyo ezinezakhiwo ze-PET/VMCPP kunye ne-PET/VMPET/PE.
1. Izizathu kunye nezisombululo "zamabala amhlophe"
Inkcazo yento "emhlophe": Kukho amabala amhlophe acacileyo kwimbonakalo yefilimu edityanisiweyo, anokusasazwa ngokungacwangciswanga kwaye abe nobukhulu obufanayo. Ingakumbi kwiifilimu ezidityanisiweyo ezingaprintwanga kunye neefilimu ezidityanisiweyo ze-inki emhlophe epheleleyo okanye i-inki enombala okhanyayo, iyabonakala ngakumbi.
1.1 Uxinzelelo olungonelanga lomphezulu kwicala le-aluminium plating ye-aluminium coating.
Ngokubanzi, uvavanyo lokuxinana komphezulu kufuneka lwenziwe kumphezulu we-corona wefilimu esetyenzisiweyo ngaphambi kokuba kuhlanganiswe, kodwa ngamanye amaxesha uvavanyo lokugqunywa kwe-aluminium alunanzwa. Ingakumbi kwiifilimu ze-VMCPP, ngenxa yokuba kungenzeka ukuba kubekho izongezo ezincinci ze-molecular kwifilimu yesiseko se-CPP, umphezulu we-aluminium ogqunywe ziifilimu ze-VMCPP ogcinwe ixesha elithile unokuba noxinzelelo olunganeleyo.
1.2 Ukungalingani kakuhle kwe-adhesive
Izincamathelisi ezisekelwe kwisinyibilikisi kufuneka zikhethe uxinaniso olufanelekileyo lwesisombululo sokusebenza ngokwencwadana yemveliso ukuqinisekisa ukulingana kweglue efanelekileyo. Kwaye ulawulo lovavanyo lwe-viscosity kufuneka luphunyezwe ngexesha lenkqubo yokuvelisa eqhubekayo. Xa i-viscosity isanda kakhulu, izinyibilikisi kufuneka zongezwe ngoko nangoko. Amashishini aneemeko anokukhetha izixhobo zeglue yepompo ezenzekelayo evaliweyo. Ubushushu obufanelekileyo bokufudumeza kwiiglue ezingenasinyibilikisi kufuneka bukhethwe ngokwencwadana yemveliso. Ukongeza, xa kujongwa umba wexesha lokusebenza elingenasinyibilikisi, emva kwexesha elide, iglue kwirola yokulinganisa kufuneka ikhutshwe ngexesha elifanelekileyo.
1.3 Inkqubo embi yokudibanisa
Kwizakhiwo zePET/VMCPP, ngenxa yobukhulu obuncinci kunye nokwandiswa okulula kwefilimu yeVMCPP, uxinzelelo lwerola yelamination akufuneki lube phezulu kakhulu ngexesha le-lamination, kwaye uxinzelelo lwe-winding akufanele lube phezulu kakhulu. Nangona kunjalo, xa isakhiwo sePET/VMCPP sidityanisiwe, ngenxa yokuba ifilimu yePET yifilimu eqinileyo, kuyacetyiswa ukuba kunyuswe uxinzelelo lwerola yelamination kunye noxinzelelo lwe-winding ngokufanelekileyo ngexesha le-composite.
Iiparameter zenkqubo yokudibanisa ezihambelanayo kufuneka zenziwe ngokusekelwe kwimeko yezixhobo zokudibanisa xa izakhiwo ezahlukeneyo zokugquma i-aluminium zidibanisa.
1.4 Izinto zangaphandle ezingena kwifilimu edityanisiweyo zibangela “amabala amhlophe”
Izinto zangaphandle ziquka uthuli, amasuntswana erabha, okanye inkunkuma. Uthuli kunye nenkunkuma ikakhulu zivela kwindawo yokusebenzela, kwaye zinokwenzeka ukuba zenzeke xa ucoceko lwendawo yokusebenzela lungacocekanga. Amasuntswana erabha ikakhulu avela kwiidiski zerabha, iirola zokugquma, okanye iirola zokugquma. Ukuba isityalo esixutyiweyo asiyindawo yokusebenzela engenathuli, kufuneka sizame ukuqinisekisa ukuba indawo yokusebenzela exutyiweyo icocekile kwaye icocekile, sifake izixhobo zokususa uthuli okanye zokucoca (isixhobo sokugquma, irola yesikhokelo, isixhobo sokugquma kunye nezinye izinto) zokucoca. Ingakumbi irola yokugquma, i-scraper, i-flatening roller, njl. kufuneka icocwe rhoqo.
1.5 Ukufuma okuphezulu kwindawo yokusebenzela yemveliso kukhokelela "kumabala amhlophe"
Ingakumbi ngexesha lemvula, xa ukufuma kweworkshop kungaphezulu kwe-80%, ifilimu edityanisiweyo ithambekele kakhulu kwisiganeko "samabala amhlophe". Faka imitha yobushushu kunye nokufuma kwindawo yokusebenzela ukuze urekhode utshintsho kubushushu kunye nokufuma, kwaye ubale amathuba okuvela kwamabala amhlophe. Amashishini aneemeko angacinga ngokufaka izixhobo zokususa ubumanzi. Kwizakhiwo ezidityanisiweyo ezinamalaya amaninzi ezineempawu ezintle zokuthintela, kuyimfuneko ukuqwalasela ukumisa imveliso okanye ukuvelisa izakhiwo ezidityanisiweyo ezinamalaya amaninzi okanye angapheliyo. Ukongeza, ngelixa kuqinisekiswa ukusebenza okuqhelekileyo kweglue, kucetyiswa ukunciphisa ubungakanani bearhente yokunyanga esetyenziswa ngokufanelekileyo, ngesiqhelo nge-5%.
1.6 Umphezulu wokuncamathelisa
Xa kungekho ziphazamiso zicacileyo zifunyenweyo kwaye ingxaki "yamabala amhlophe" ingenakusonjululwa, inkqubo yokugquma kwicala lokugquma i-aluminiyam inokuqwalaselwa. Kodwa le nkqubo inemida ebalulekileyo..Ingakumbi xa i-VMCPP okanye i-VMPET aluminium coating itshiswa kwaye ixinene kwi-oven, inokuba nokuguquguquka kokuxinana, kwaye inkqubo yokudibanisa kufuneka ilungiswe. Ukongeza, amandla okuxobuka komaleko we-aluminium plating anokuncipha.
1.7 Ingcaciso ekhethekileyo yemeko apho kungekho ziphazamiso zifunyenweyo emva kokuvalwa, kodwa kwavela “amabala amhlophe” emva kokuvuthwa:
Olu hlobo lwengxaki lunokwenzeka kwizakhiwo ze-membrane ezidityanisiweyo ezineempawu ezilungileyo zokuthintela. Kwizakhiwo ze-PET/VMCPP kunye ne-PET/VMPET/PE, ukuba isakhiwo se-membrane sityebile, okanye xa usebenzisa iifilimu ze-KBOPP okanye ze-KPET, kulula ukuvelisa "amabala amhlophe" emva kokwaluphala.
Iifilimu ezidityanisiweyo ezinemiqobo ephezulu zezinye izakhiwo nazo zinokuba nengxaki efanayo. Imizekelo ibandakanya ukusebenzisa ifoyile ye-aluminium etyebileyo okanye iifilimu ezibhityileyo ezifana ne-KNY.
Isizathu esiphambili sale nto "ibala elimhlophe" kukuba kukho ukuvuza kwegesi ngaphakathi kwi-membrane edibeneyo. Le gesi isenokuba kukugcwala kwezinyibilikisi ezisele okanye ukugcwala kwegesi yekhabhoni diokside eveliswa yimpendulo phakathi kwe-ejenti yokuphilisa kunye nomphunga wamanzi. Emva kokuba igesi igcwala, ngenxa yeempawu ezilungileyo zomqobo wefilimu edibeneyo, ayinakukhutshwa, nto leyo ebangela ukubonakala "kwamabala amhlophe" (amaqamza) kumaleko odibeneyo.
Isisombululo: Xa udibanisa i-glue esekelwe kwi-solvent, iiparameter zenkqubo ezifana nobushushu be-oven, umthamo womoya, kunye noxinzelelo olubi kufuneka zibekwe kakuhle ukuqinisekisa ukuba akukho solvent ishiyekileyo kumaleko we-glue. Lawula umswakama kwindawo yokusebenzela kwaye ukhethe inkqubo yokugquma i-glue evaliweyo. Cinga ngokusebenzisa i-agent yokunyanga engavelisi amaqamza. Ukongeza, xa usebenzisa i-glue esekelwe kwi-solvent, kuyimfuneko ukuvavanya umxholo womswakama kwi-solvent, kunye nemfuneko yomxholo womswakama ≤ 0.03%.
Oku kungasentla kukwazisa ngemeko "yamabala amhlophe" kwiifilimu ezidityanisiweyo, kodwa kukho izizathu ezahlukeneyo ezinokubangela iingxaki ezinjalo kwimveliso yokwenyani, kwaye kuyimfuneko ukwenza izigqibo kunye nophuculo olusekelwe kwimeko yokwenyani yemveliso.
Ixesha lokuthumela: Disemba-11-2023