1. Kwenzeka ntoni xa i-inki iye yanyangeka ngokugqithisileyo?Kukho ingcamango yokuba xa i-inkino ye-inki ibonakaliswe ekukhanyeni okukhulu kwe-ultraviolet, iya kuba nzima kwaye ibe nzima. Xa abantu beprinta enye i-inki kule filimu ye-inki lukhuni baze bayomise okwesihlandlo sesibini, ukuncamathela phakathi kwamaleko e-inki angaphezulu nangaphantsi kuya kuba nzima kakhulu.
Enye ithiyori kukuba ukunyanga ngokugqithisileyo kuya kubangela i-photo-oxidation kumphezulu we-inki. I-Photo-oxidation iya kutshabalalisa iibhondi zeekhemikhali kumphezulu wefilimu ye-inki. Ukuba iibhondi ze-molecular ebusweni befilimu ye-inki zichithwa okanye zonakaliswe, ukunamathela phakathi kwayo kunye nolunye uluhlu lwe-inki luya kuncitshiswa. Iifilimu ze-inki ezinyangekileyo aziguquguquki nje kuphela, kodwa zikwathandeka kwi-embrittlement yomhlaba.
2. Kutheni ezinye ii-ink ze-UV zinyanga ngokukhawuleza kunezinye?Ii-inks ze-UV ngokubanzi zenziwe ngokweempawu ze-substrates ezithile kunye neemfuno ezikhethekileyo zezicelo ezithile. Ukusuka kwindawo yokujonga imichiza, ngokukhawuleza ukunyanga inki, kokukhona ukuguquguquka kwayo emva kokunyanga. Njengoko unokucinga, xa i-inki iphiliswa, iimolekyuli ze-inki ziya kuhlangabezana neempendulo zokudibanisa. Ukuba ezi molekyuli zenza inani elikhulu lamatyathanga e-molecular kunye namasebe amaninzi, i-inki iya kunyanga ngokukhawuleza kodwa ayiyi kuba bhetyebhetye kakhulu; ukuba ezi molekyuli zenza inani elincinane lamatyathanga emolekyuli ngaphandle kwamasebe, i-inki inokunyanga kancinane kodwa ngokuqinisekileyo iya kuba bhetyebhetye kakhulu. Iinki ezininzi ziyilwe ngokusekelwe kwiimfuno zesicelo. Umzekelo, kwii-inki ezenzelwe ukuveliswa kokutshintsha kwe-membrane, ifilimu ye-inki ephilisiwe kufuneka ihambelane ne-adhesives edibeneyo kwaye ibe bhetyebhetye ngokwaneleyo ukuze ilungele ukusetyenzwa okulandelayo okufana ne-die-cutting kunye ne-embossing.
Kuyaphawuleka ukuba iikhemikhali ezisetyenziswa kwi-inki azikwazi ukusabela kunye nomphezulu we-substrate, ngaphandle koko kuya kubangela ukuqhekeka, ukuphuka okanye ukuchithwa. Iinki ezinjalo zidla ngokunyanga kancinane. Iinki ezenzelwe ukuveliswa kwamakhadi okanye iibhodi zeplastiki eziqinileyo azidingi ukuguquguquka okuphezulu kwaye zome ngokukhawuleza kuxhomekeke kwiimfuno zesicelo. Nokuba i-inki yoma ngokukhawuleza okanye kancinci, kufuneka siqale kwisicelo sokugqibela. Omnye umba omele uqwalaselwe sisixhobo sokunyanga. Ezinye i-inki zinokunyangeka ngokukhawuleza, kodwa ngenxa yobuchule obuphantsi besixhobo sokunyanga, isantya sokunyanga se-inki sinokuthotywa okanye singanyangeki ngokupheleleyo.
3. Kutheni ifilimu ye-polycarbonate (PC) ijika ibe tyheli xa ndisebenzisa i-inki ye-UV?I-Polycarbonate ivakalelwa kwimitha ye-ultraviolet kunye nobude obungaphantsi kwe-320 nanometers. I-yellowing yendawo yefilimu ibangelwa ukuphulwa kwekhonkco le-molecular ebangelwa yi-photooxidation. Iibhondi zeplastiki zemolekyuli zithatha amandla okukhanya kwe-ultraviolet kwaye zivelise i-radicals yamahhala. Ezi radicals zamahhala zisabela ngeoksijini emoyeni kwaye zitshintshe imbonakalo kunye neempawu ezibonakalayo zeplastiki.
4. Indlela yokuphepha okanye ukuphelisa i-yellowing ye-polycarbonate surface?Ukuba inki ye-UV isetyenziselwa ukuprinta kwifilimu ye-polycarbonate, i-yellowing yobuso bayo ingancitshiswa, kodwa ayikwazi ukupheliswa ngokupheleleyo. Ukusetyenziswa kwee-bulbs zokunyanga ngentsimbi eyongeziweyo okanye i-gallium kunokunciphisa ngokufanelekileyo ukuvela kolu luphuzi. Ezi bhalbhu ziya kunciphisa ukukhutshwa kwemitha ye-ultraviolet ye-wavelength emfutshane ukuphepha umonakalo kwi-polycarbonate. Ukongeza, ukunyanga ngokufanelekileyo umbala we-inki ngamnye kuya kunceda ukunciphisa ixesha lokuvezwa kwe-substrate ekukhanyeni kwe-ultraviolet kunye nokunciphisa amathuba okuba nombala wefilimu ye-polycarbonate.
5.Luluphi unxulumano phakathi kweeparamitha zokumisela (iiwatts nge-intshi nganye) kwisibane sokunyanga se-UV kunye nofundo esilubonayo kwirediyomitha (i-watts nge-square centimeter okanye ii-milliwatts nge-square centimeter)?
I-Watts nge-intshi nganye yiyunithi yamandla yesibane sokunyanga, ephuma kwi-Ohm's law volts (voltage) x amps (yangoku) = iiwatts (amandla); ngelixa iiwathi ngesentimitha nganye okanye i-milliwatts ngesentimitha nganye imele ukukhanya okuphakamileyo (amandla e-UV) kwindawo nganye yeyunithi xa i-radiometer idlula phantsi kwesibane sokunyanga. Incopho yokukhanya ixhomekeke ikakhulu kumandla esibane sokunyanga. Isizathu sokuba sisebenzise ii-watts ukulinganisa ukukhanya okuphezulu kukuba imele amandla ombane asetyenziswe sisibane sokunyanga. Ukongeza kwisixa sombane esifunyenwe yiyunithi yokuphilisa, ezinye izinto ezichaphazela ukukhanya kwepeak ziquka imeko kunye nejometri yesibonisi, iminyaka yesibane sokunyanga, kunye nomgama phakathi kwesibane sokunyanga kunye nomgangatho wokuphilisa.
6. Yintoni umahluko phakathi kwe-milliwatts kunye ne-milliwatts?Amandla ewonke afakwe kwindawo ethile kwisithuba sexesha elithile adla ngokubonakaliswa ngeejowuli ngesentimitha ecaba okanye iimilijoule ngesentimitha nganye. Ikakhulu inxulumene nesantya sebhanti lokuhambisa, amandla, inombolo, ubudala, ubume bezibane zokuphilisa, kunye nokumila kunye nemeko yokubonakalisa inkqubo yokunyanga. Amandla ombane we-UV okanye amandla emitha emitha ukuya kumphezulu othile abonakaliswa ikakhulu ngeewatts/square centimeter okanye imilliwatts/square centimeter. Okukhona uphezulu amandla e-UV efakwa kumphezulu wesubstrate, kokukhona amandla engena kwifilimu ye-inki. Nokuba i-milliwatts okanye i-millijoules, inokulinganiswa kuphela xa uvakalelo lwamaza erediyomitha luhlangabezana neemfuno ezithile.
7. Siqinisekisa njani ukunyangwa ngokufanelekileyo kwe-inki ye-UV?Ukunyangwa kwefilimu ye-inki xa idlula kwiyunithi yokunyanga okokuqala kubaluleke kakhulu. Ukunyangwa ngokufanelekileyo kunokunciphisa ukuguqulwa kwe-substrate, ukunyanyiswa ngokugqithisileyo, ukumanzisa kwakhona kunye nokunyanyiswa ngaphantsi, kunye nokwandisa ukunamathela phakathi kwe-inki kunye nokuhlekisa okanye phakathi kweengubo. Izityalo zokuprinta isikrini kufuneka zimisele iiparamitha zemveliso phambi kokuba imveliso iqale. Ukuze kuvavanywe ukusebenza kakuhle kokunyanga kwe-inki ye-UV, sinokuqalisa ukuprinta ngesona santya sisezantsi sivunyelwe yi-substrate kwaye sinyange iisampuli eziprintwe kwangaphambili. Emva koko, seta amandla esibane sokuphilisa kwixabiso elichazwe ngumenzi we-inki. Xa ujongana nemibala ekungelula ukuyinyanga, njengomnyama nomhlophe, sinokunyusa ngokufanelekileyo iiparitha zesibane sokunyanga. Emva kokuba iphepha eliprintiweyo lipholile, sinokusebenzisa indlela ye-bidirectional shadow ukumisela ukunamathela kwefilimu ye-inki. Ukuba isampulu inokuluphumelela uvavanyo ngokutyibilikayo, isantya sokuhambisa iphepha sinokunyuswa ngeenyawo ezili-10 ngomzuzu, kwaye ke ukuprinta novavanyo lunokwenziwa de ifilimu ye-inki ilahlekelwe ukuncamathela kwi-substrate, kunye nesantya sebhanti lokuhambisa kunye neparamitha yesibane ephilisayo. ngeli xesha zirekhodwa. Emva koko, isantya sebhanti sokuhambisa singancitshiswa ngo-20-30% ngokweempawu zenkqubo ye-inki okanye iingcebiso zomthengisi we-inki.
8. Ukuba imibala ayidibanisi, ngaba kufuneka ndizixhalabise ngokunyanga ngokugqithisileyo?Ukunyanga ngokugqithisileyo kwenzeka xa umphezulu wefilimu ye-inki ufunxa kakhulu ukukhanya kwe-UV. Ukuba le ngxaki ayifumanekanga kwaye isonjululwe ngexesha, umphezulu wefilimu ye-inki uya kuba nzima kwaye unzima. Kakade ke, logama nje singakwenzi ushicilelo olungaphezulu kombala, akufuneki sikhathazeke kakhulu ngale ngxaki. Nangona kunjalo, kufuneka siqwalasele enye into ebalulekileyo, ifilimu okanye i-substrate eprintwayo. Ukukhanya kwe-UV kunokuchaphazela iindawo ezininzi zesubstrate kunye nezinye iiplastiki ezinobuthathaka kukukhanya kwe-UV yobude obuthile. Olu buntununtunu kumaza amaza athile adityaniswe neoksijini emoyeni kunokubangela ukuthotywa komphezulu weplastiki. Iibhondi zemolekyuli kumphezulu we-substrate zinokwaphulwa kwaye zibangele ukuba ukunamathela phakathi kwe-inki ye-UV kunye ne-substrate ingaphumeleli. Ukuthotywa kwe-substrate surface function yinkqubo kancinane kwaye inxulumene ngokuthe ngqo kumandla okukhanya kwe-UV awafumanayo.
9. Ngaba i-inki ye-UV yi-inki eluhlaza? Ngoba?Xa kuthelekiswa nee-inks ezisekwe kwi-solvent, ii-inks ze-UV zinobuhlobo ngakumbi nokusingqongileyo. Iinki ezinyangekayo ze-UV zingaqina nge-100%, nto leyo ethetha ukuba onke amacandelo e-inki aya kuba yifilimu ye-inki yokugqibela.
Ii-inki ezisekwe kwi-solvent, kwelinye icala, ziya kukhupha izinyibilikisi emoyeni njengoko ifilimu ye-inki isoma. Ekubeni izinyibilikisi ziziikhompawundi eziphilayo eziguquguqukayo, ziyingozi kwindalo esingqongileyo.
10. Yintoni iyunithi yomlinganiselo wedatha yoxinano eboniswe kwi-densitometer?Uxinaniso lwamehlo alunaziyunithi. I-densitometer ilinganisa ubungakanani bokukhanya okubonakalisiweyo okanye okuhanjiswa ukusuka kwindawo eprintiweyo. Iliso le-photoelectric eliqhagamshelwe kwi-densitometer linokuguqula ipesenti yokukhanya okubonakalisiweyo okanye okudlulisiweyo kwixabiso lobuninzi.
11. Ziziphi izinto ezichaphazela ukuxinana?Kushicilelo lwesikrini, izinto eziguquguqukayo ezichaphazela amaxabiso oxinaniso ubukhulu becala ubukhulu befilimu ye-inki, umbala, ubungakanani kunye nenani lamasuntswana epigment, kunye nombala we substrate. Ubuninzi be-Optical density bugqitywe ngokugqithisileyo kunye nobukhulu befilimu ye-inki, ethi ichaphazeleke ngobukhulu kunye nenani lamasuntswana e-pigment kunye neempawu zabo zokufunxa ukukhanya kunye nokusabalalisa.
12. Yintoni inqanaba ledyne?I-Dyne/cm yiyunithi esetyenziselwa ukulinganisa ukuxinezeleka komphezulu. Olu xinzelelo lubangelwa ngumtsalane we-intermolecular wolwelo oluthile (uxinzelelo lomphezulu) okanye oluqinileyo (amandla angaphezulu). Ngeenjongo ezisebenzayo, sikholisa ukubiza le parameter dyne level. Inqanaba le-dyne okanye amandla omhlaba we-substrate ethile imele ukumanzi kwayo kunye nokunamathela kwe-inki. Amandla angaphezulu yipropathi ebonakalayo yento ethile. Iifilimu ezininzi kunye ne-substrates ezisetyenziselwa ukuprinta zinezinga eliphantsi lokuprinta, njenge-31 dyne / cm i-polyethylene kunye ne-29 dyne / cm polypropylene, ngoko ke ifuna unyango olukhethekileyo. Unyango olufanelekileyo lunokwandisa inqanaba le-dyne yezinye substrates, kodwa okwethutyana. Xa ulungele ukuprinta, kukho ezinye izinto ezichaphazela inqanaba le-dyne ye-substrate, njengale: ixesha kunye nenani lonyango, iimeko zokugcina, umswakama wendawo kunye namanqanaba othuli. Ekubeni amanqanaba e-dyne anokutshintsha ngokuhamba kwexesha, abaninzi abashicileli bavakalelwa kukuba kuyimfuneko ukunyanga okanye ukuphinda baphathe ezi filimu ngaphambi kokushicilela.
13. Unyango lomlilo lwenziwa njani?Iiplastiki ngokwendalo azinapore kwaye zinomphezulu ongasebenziyo (amandla aphantsi komhlaba). Ukunyangwa kweFlame yindlela yokunyanga iiplastiki kwangaphambili ukunyusa umgangatho we-dyne we-substrate surface. Ukongeza kwintsimi yokushicilela ibhotile yeplastiki, le ndlela isetyenziswa ngokubanzi kwimizi-mveliso yeemoto kunye nefilimu. Unyango lweFlame alunyusi nje amandla angaphezulu, kodwa luphinda luphelise ukungcoliseka komhlaba.Unyango lweFlame lubandakanya uthotho lweempendulo ezintsonkothileyo zomzimba kunye neekhemikhali. Indlela ebonakalayo yonyango lomlilo kukuba i-flame yokushisa ephezulu idlulisela amandla kwioli kunye nokungcola phezu kwe-substrate, ebangela ukuba baphuphe phantsi kobushushu kwaye badlale indima yokucoca; kunye nenkqubo yayo yeekhemikhali kukuba ilangatye liqulethe inani elikhulu leeyoni, ezineempawu ezinamandla ze-oxidizing. Ngaphantsi kobushushu obuphezulu, isabela kunye nomphezulu wento ephathwayo ukwenza umaleko wamaqela asebenzayo e-polar ahlawuliweyo kumphezulu wento ephathwayo, eyandisa amandla ayo angaphezulu kwaye ngaloo ndlela inyusa amandla ayo okufunxa ulwelo.
14. Yintoni unyango lwecorona?Ukukhutshwa kweCorona yenye indlela yokunyusa izinga ledyne. Ngokusebenzisa i-voltage ephezulu kwi-media roller, umoya ojikelezileyo unokwenziwa i-ionized. Xa i-substrate idlula kule ndawo ye-ionized, iibhondi ze-molecular ebusweni bezinto eziphathekayo ziya kuphuka. Le ndlela idla ngokusetyenziswa kushicilelo olujikelezayo lwezixhobo zefilimu ezibhityileyo.
15. Iplasticizer ichaphazela njani ukuncamatheliswa kweinki kwiPVC?I-Plasticizer yikhemikhali eyenza izinto eziprintiweyo zibe thambile kwaye ziguquguquke. Isetyenziswa ngokubanzi kwi-PVC (i-polyvinyl chloride). Uhlobo kunye nobungakanani beplasticizer bongezwa kwi-PVC eguquguqukayo okanye ezinye iiplastiki ikakhulu kuxhomekeke kwiimfuno zabantu kumatshini, ukutshatyalaliswa kobushushu kunye neempawu zombane zezinto eziprintiweyo. I-Plasticizers inamandla okufudukela kwi-substrate surface kwaye ichaphazela ukunamathela kwe-inki. Iiplastiki ezihlala kwi-substrate surface zingcoliseko ezinciphisa amandla omhlaba we-substrate. Okukhona ungcoliseko lungaphezulu kumphezulu, kokukhona usezantsi amandla angaphezulu kunye nokuncamathela okuncinci kuya kufuneka kuyinki. Ukuze ugweme oku, umntu unokucoca i-substrates nge-solvent yokucoca encinci ngaphambi kokushicilela ukuphucula ukuprintwa kwabo.
16. Zingaphi izibane endizidingayo ukuze ndinyange?Nangona inkqubo ye-inki kunye nohlobo lwe-substrate luyahluka, ngokubanzi, inkqubo yokunyanga isibane esisodwa yanele. Ewe kunjalo, ukuba unohlahlo lwabiwo-mali olwaneleyo, unokukhetha kwakhona iyunithi yokunyanga izibane ezimbini ukunyusa isantya sokunyanga. Isizathu sokuba kutheni izibane ezimbini zokunyanga zingcono kunomnye kukuba inkqubo yesibane-embini inokubonelela ngamandla amaninzi kwi-substrate kwisantya esifanayo sokuhambisa kunye nemimiselo yeparameter. Omnye wemiba ephambili ekufuneka siyiqwalasele kukuba ingaba iyunithi yokunyanga inokomisa i-inki eprintiweyo ngesantya esiqhelekileyo.
17. I-viscosity ye-inki ichaphazela njani ukuprintwa?Uninzi lwee-inki zi-thixotropic, oku kuthetha ukuba i-viscosity yabo iyatshintsha ngokucheba, ixesha kunye nobushushu. Ukongeza, ukuphakama kwesantya sokucheba, kokukhona kusezantsi i-viscosity ye-inki; kokukhona ubushushu be-ambient buphezulu, kokukhona isezantsi i-viscosity yonyaka ye-inki. Ii-inki zoshicilelo lwesikrini zizuza iziphumo ezilungileyo kumatshini wokushicilela, kodwa ngamanye amaxesha kuya kubakho iingxaki ngoshicilelo ngokuxhomekeke kwisethingi yoshicilelo kunye nohlengahlengiso lwangaphambili. I-viscosity ye-inki kumatshini wokushicilela ikwahluke kwi-viscosity yayo kwikhatriji ye-inki. Abavelisi be-inki babeka uluhlu oluthile lwe-viscosity kwiimveliso zabo. Kwii-inki ezibhityileyo kakhulu okanye ezine-viscosity ephantsi kakhulu, abasebenzisi banokongeza ii-thickeners ngokufanelekileyo; kwii-inki ezityebileyo kakhulu okanye ezine-viscosity ephezulu kakhulu, abasebenzisi banokongeza izixukuli. Ukongeza, unokuqhagamshelana nomthengisi we-inki ngolwazi lwemveliso.
18. Zeziphi izinto ezichaphazela uzinzo okanye ubomi beshelufu yee-inks zeUV?Into ebalulekileyo echaphazela ukuzinza kwee-inki kukugcinwa kwe-inki. I-inks ye-UV idla ngokugcinwa kwiikhatriji ze-inki zeplastiki kuneekhatriji ze-inki zetsimbi kuba izikhongozeli zeplastiki zineqondo elithile lokungena kweoksijini, enokuqinisekisa ukuba kukho umsantsa othile womoya phakathi komphezulu weinki kunye nesigqubuthelo sesikhongozeli. Lo msantsa womoya - ngakumbi ioksijini esemoyeni - inceda ukunciphisa uqhagamshelo oluphambi kwexesha lwe-inki. Ukongeza kokupakishwa, ubushushu besikhongozeli se-inki bukwabalulekile ekugcineni uzinzo. Amaqondo obushushu aphezulu anokubangela ukusabela kwangaphambi kwexesha kunye nokudityaniswa kwe-inki. Ulungelelwaniso kwi-inki eyi-original formulation inokuchaphazela uzinzo lweshelufu ye-inki. Izongezo, ngakumbi ii-catalysts kunye ne-photoinitiators, zinokunciphisa ubomi beshelufu ye-inki.
19. Uthini umahluko phakathi kophawu lokungunda (IML) kunye nokuhombisa okukwimold (IMD)?Ukuleyibhile kwi-mold kunye nokuhombisa kwi-mold ngokusisiseko kuthetha into enye, oko kukuthi, ileyibhile okanye ifilimu yokuhombisa (yangaphambili okanye hayi) ibekwe kubumba kwaye iplastiki etyhidiweyo iyayixhasa ngelixa le nxalenye isenziwa. Iileyibhile ezisetyenziswe ngaphambili ziveliswa kusetyenziswa ubuchwepheshe obuhlukeneyo bokushicilela, njenge-gravure, i-offset, i-flexographic okanye ukuprintwa kwesikrini. Ezi lebhile zidla ngokuprintwa kuphela kumphezulu ophezulu wezinto eziphathekayo, ngelixa icala elingashicilelwanga lidityaniswe kwi-injection mold. Umhlobiso ongaphakathi kwi-mold usetyenziswa kakhulu ukuvelisa iindawo ezihlala ixesha elide kwaye zidla ngokuprintwa kwindawo yesibini yefilimu ebonakalayo. Ukuhombisa okungaphakathi komngundo kushicilelwa ngokubanzi kusetyenziswa umshicileli wesikrini, kwaye iifilim kunye nee-ink ze-UV ezisetyenzisiweyo kufuneka zihambelane nokungunda kwesitofu.
20. Kwenzeka ntoni ukuba iyunithi yokunyanga initrogen isetyenziselwa ukunyanga i-inks ezinemibala ye-UV?Iinkqubo zokunyanga ezisebenzisa initrogen ukunyanga iimveliso eziprintiweyo zikhona ngaphezu kweminyaka elishumi. Ezi nkqubo zisetyenziswa ikakhulu kwinkqubo yokunyanga amalaphu kunye nokutshintsha kwenwebu. Initrogen isetyenziswa endaweni yeoksijini kuba ioksijini inqanda ukunyangwa kwee-inki. Nangona kunjalo, ekubeni ukukhanya okuvela kwii-bulbs kwezi nkqubo kuncinci kakhulu, azisebenzi kakhulu ekunyangeni ii-pigments okanye ii-inks ezinemibala.
Ixesha lokuposa: Oct-24-2024
