Ungayikhetha kanjani i-UV LED wavelength ye-UV Ink Curing

Kungani i-UV LED Wavelength Matters for UV Ink Curing

I-UV LED wavelength ibalulekile ekwelapheni inkinobho ye-UV ngoba ama-inks aqukethe ama-photoinitiators asabela kuphela kuma-wavelengths athile e-UV ukwakha ifilimu eqinile. Ungabuka ubude be-wavelength njenge "ukhiye we-spectral" okumele uvumelane "nokukhiya kwamakhemikhali" kokwakhiwa kweyinki. Uma ama-photon akhishwa uhlelo lwakho lwe-LED engahambisani neziqongo zokumuncwa kwama-photoinitiators, inqubo ye-polymerization ngeke isebenze noma yehluleke ngokuphelele.

Lapho ama-wavelengths engahambelani, ungase uhlangabezane nezinkinga lapho ubuso beyinki buzizwa bomile, kepha izingqimba zangaphakathi zihlala ziwuketshezi. Lokhu kuntuleka kobuqotho besakhiwo kuholela ekumelaneni okungalungile kwe-rub kanye "nokukhetha" kukayinki ngesikhathi sezinqubomgomo zokucindezela. Ukukhetha i-wavelength ebangela ngempumelelo i-chemistry ethile ye-inki yakho kuyisisekelo sendawo yokuphrinta ezinzile futhi ebikezelekayo.

How UV Ink Chemistry Influences

I-UV ink chemistry inquma ukukhetha kwe-wavelength ngoba ama-photoinitiators ahlukene amunca amandla kahle kakhulu kumabhendi athile e-UV. Ngokungafani nokumbozwa okucacile, ama-inks wokuphrinta aqukethe ukugxila okuphezulu kwama-pigment nama-fillers asebenza njengezihlungi zangaphakathi, ngokuvamile ukuvimba noma ukusabalalisa amagagasi amafushane e-ultraviolet ngaphambi kokuba afinyelele ezansi kwesendlalelo sikayinki.

Uma uphrinta abamnyama abakhulu noma abamhlophe abangabonakali, udinga ubude be-wavelength obungabona ngalawa ma-pigment. Ngokuvamile, ama-wavelengths amade anekhono elikhulu lokungena kulezi zinto eziminyene. Ishidi ledatha lobuchwepheshe lomhlinzeki wakho we-inki lingumthombo wakho oyinhloko wokukhomba ukuzwela okuqondile kwe-inki yakho, ukuqinisekisa ukuthi umthombo wakho wokukhanya unikeza amandla aqondile e-photon adingekayo ukuqala ukwelashwa okujulile, okuphelele.

Yimaphi amabanga we-UV LED wavelength ajwayelekile ekwelapheni inki

Ama-wavelengths ajwayelekile we-UV LED wokuphulukisa inki ngokuvamile awela ngaphakathi kwebanga le-UVA, ngamabhendi ahlukene anikeza ukuhweba phakathi kwejubane lokuphulukisa nokungena. Izinhlelo eziningi zokuphrinta zezimboni zisebenzisa ama-365 nm, 385 nm, noma ama-395 nm ama-LED arrays ukwamukela izinhlobo ezahlukahlukene zeyinki nesivinini se-substrate.

• I-365nm: Le wavelength inikeza amandla aphezulu we-photon, okuhle kakhulu ekuqineni okusheshayo komhlaba nokunqoba ukuvinjelwa kwe-oksijini. Kuyisinqumo esikhethiwe se-varnishes ecacile yokuphrinta kanye namalebula wefilimu omncane.
• I-385 nm ne-395 nm: Lawa ma-wavelengths amade angamahhashi omsebenzi we-broad-format kanye ne-digital inkjet world. Banikeza ukungena okujulile, okubalulekile ekwelapheni amadiphozithi we-inki aqinile, anemibala atholakala kuzicelo ezisezingeni eliphakeme zemifanekiso.
• I-405nm: Ngezikhathi ezithile isetshenziselwa ukumbozwa okukhethekile noma ukuphulukisa ngama-substrates avimbela imvamisa emifushane ye-UV.

How Wavelength Affects Cure Depth and Print

I-UV LED wavelength ithinta ukujula kwephuluki nekhwalithi yokuphrinta ngokuthonya ukuthi inki iphulukisa kanjani ngokulinganayo ngobukhulu bayo. Uma ubude be-wavelength bufushane kakhulu, bungamuncwa ngokuphelele ngama-photoinitiators angaphezulu, ushiye inki ku-interface ye-substrate ingalapheki. Lokhu kuholela ekulahlekelweni kokunamathela lapho yonke ifilimu ye-inki ingaklwebha kalula noma ikhishwe kalula.

Ngakolunye uhlangothi, uma ubude be-wavelength buhambisana kahle nokungena, i-polymerization yenzeka ngokungaguquguquki kusuka phansi kuya phezulu. Lokhu kuxhumanisa isiphambano esifanayo yikho okunikeza ukuphrinta izinga layo lokugcina lokucwebezela, ukumelana namakhemikhali, nokuguquguquka. Ama-wavelengths angahambelani avame ukuholela ekwakhekeni "kwemibimbi" noma "i-orange peel" njengoba ungqimba oluphezulu luncipha ngesilinganiso esihlukile kunengaphakathi loketshezi, luyekethisa unomphela ikhwalithi ebonakalayo yokuphrinta kwakho.

Indlela yokufanisa i-UV LED wavelength kuhlelo lwakho lokusebenza lokuphrinta

Ukukhetha ubude obufanele be-UV LED kudinga ukuqondanisa ukucaciswa kweyinki, ukujiya kwesendlalelo, uhlobo lwe-substrate, kanye nesivinini sokukhiqiza. Kufanele uphathe inqubo yokwelapha njengohlelo oluphelele kunokuba uchungechunge lwezinto ezihlukene. Ngemigqa ye-flexographic enejubane eliphezulu, ungadinga uhlelo oluphezulu lwe-395nm ukuqinisekisa ukwelashwa ngamamitha angama-200 ngomzuzu.

Ngamalebula akhethekile kumafilimu azwela ukushisa, uhlelo lwe-365nm lungahle lube ngcono ukufeza ukuqedwa kwendawo eqinile ngaphandle kokushisa ngokweqile i-substrate. Kufanele ngaso sonke isikhathi wenze ukuhlolwa "kwesitebhisi sokwelapha" - ukushintsha ukuqina kanye nesivinini somugqa - ukuqinisekisa ukusebenza kwe-wavelength ethile. Ukuthembela emoyeni obonakalayo kuphela kuyingozi; Esikhundleni salokho, sebenzisa izivivinyo ze-tape ezijwayelekile noma izivivinyo zokuhlikihla kwamakhemikhali ukuqinisekisa ukuthi inki ifinyelele izakhiwo zayo ezigcwele zesakhiwo.

Yiziphi izinto ezibalulekile zokukhethwa kwe-UV Ink Wavelength

Ukukhetha ubude obufanele be-UV LED kubalulekile ekufezeni ukwelashwa kwe-inki okungaguquguquki, ukunamathela okuqinile, nekhwalithi yokuphrinta ezinzile. Yibhuloho lobuchwepheshe elibucayi kakhulu phakathi kwesimo samanzi sikayinki emshinini nokusebenza kwayo kokugcina ezandleni zomthengi.

• Fanisa i-Chemistry: Njalo uvumelanisa isiqongo sakho se-LED nama-photoinitiators atholakala ku-TDS ye-inki yakho.
• Cabanga Ukungena: Sebenzisa ama-wavelengths amade (395 nm) ngezicelo eziphezulu ze-pigment noma ifilimu eqinile.
• Qinisekisa ukuqedwa kwendawo: Ama-wavelengths amafushane (365 nm) avame ukuphakama ekugqokeni okumelana nokuklwebha.
• Hlola futhi uqinisekise: Sebenzisa ukunamathela komzimba nokuhlolwa kokuhlikihla ukuqinisekisa ubuqotho bokwelapha kunokuhlolwa okubukwayo.

Ngabe ama-photoinitiators kuma-inki e-UV aphendula kanjani kuma-wavelengths ahlukene?

Ama-photoinitiators asetshenziswa kuma-inki we-UV aphendula kanjani kuma-wavelengths ahlukene e-UV LED? I-photoinitiator ngayinye inejika eliyingqayizivele lokumuncwa kwe-spectral. Lapho i-wavelength ye-LED ifana nesiqongo saleli jika, umqalisi uthatha amandla amakhulu, ahlukanise ama-radicals wamahhala abangela i-polymerization esheshayo ye-resin yeyinki.

Ngabe ukushuba kwe-inki kuthinta kanjani ukukhethwa kwe-wavelength?

Ukushuba kwefilimu ye-inki kuthinta kanjani ukukhethwa kwe-UV LED wavelength? Amadiphozithi we-inki amakhulu, ajwayelekile ekuphrintiweni kwesikrini noma ukubekwa kwe-inkjet esindayo, adinga ama-wavelengths amade afana ne-395nm noma i-405 nm. Lawa ma-wavelengths angahamba ngokujulile ezintweni ngaphambi kokumuncwa, aqinisekise ukuthi isisekelo sefilimu siphulukisa ngempumelelo njengendawo.

Uhlobo lwe-substrate luthinta kanjani ukukhethwa kwe-UV ink wavelength?

Ama-substrates ahlukene athinta kanjani ukuphulukiswa kwe-UV ink kanye nezidingo ze-wavelength? Ama-substrates afana nephepha angamunca inki, adinga ukungena okujulile ukuqinisekisa ukuthi i-resin eshumekiwe iyaqina. Amafilimu angewona ama-porous angavimba amabanga athile e-UV, adinga ubude be-wavelength engadlula ezintweni uma kudingeka ukwelapha ohlangothini olungemuva.

How do cure speed and production rate interact with wavelength?

Izidingo zejubane lokukhiqiza zithinta kanjani ubude obuhle be-UV LED bokwelapha inki? Ngamazinga aphezulu okukhiqiza, "isikhathi sokuhlala" ngaphansi kwesibani sincane. Ubude be-wavelength obuhambisana ngokuphelele ne-chemistry ye-inki buletha umthamo wamandla odingekayo ($J / cm ^ 2 $) ngempumelelo, okuvumela ukuthi ukhuphule isivinini somugqa ngaphandle kokubeka engcupheni ukukhishwa okungalapheki.

Yiziphi izimpawu ezijwayelekile zokukhethwa okungalungile kwe-wavelength ekuphulukiseni inki ye-UV?

Yiziphi izimpawu ezibonisa ukuthi i-UV LED wavelength kungenzeka ingahambisani kahle noyinki? Izimpawu ezijwayelekile zifaka "ukufuduka kweyinki" ngokupakisha, ukumelana okungalungile kwe-solvent, noma ukwehluleka kukayinki ukubopha ku-substrate (ukwehluleka kokunamathela). Ungase futhi uqaphele indawo "ye-tacky" noma amazinga e-gloss angahambisani kuwebhu yokuphrinta.

Imicabango Yokugcina

Ukuqedela ukukhetha kwakho ubude be-wavelength kuyisinyathelo sokugcina sokuqinisekisa ukuthembeka kwesikhathi eside kwenqubo yakho yokuphrinta. Ngenkathi kulinga ukubuka ama-UV LED njengesixazululo "sosayizi owodwa", iqiniso lobuchwepheshe ukuthi ukukhishwa kwe-spectral kwesibani sakho kunquma imingcele ebonakalayo yomugqa wakho wokukhiqiza. Ngokufanisa i-irradiance kanye ne-wavelength yesistimu yakho kuma-pigments athile kanye nama-photoinitiators we-inki yakho, udala iwindi eliqinile lokukhiqiza. Le ndlela eqhutshwa yidatha iqinisekisa ukuthi imibala yakho ihlala iphilile, izibopho zakho zihlala njalo, futhi umshini wakho uhlala usebenza kahle kakhulu.