Yimaphi ama-wavelength angcono kakhulu kuma-inki we-flexo UV?

Ngezinhlelo zokusebenza eziningi zokuphrinta ze-flexographic, i-395nm (ama-nanometers) iyona engcono kakhulu futhi esetshenziswa kakhulu yama-inks we-UV LED. Leli -wavelength linikeza ibhalansi enhle phakathi kwejubane lokuphulukisa, ukujula kokwelashwa (ukungena), nokusebenza kahle kwamandla.

Ngenkathi izibani zendabuko ze-mercury vapor zikhipha ukukhanya okubanzi, izinhlelo zanamuhla ze-UV LED zigxila eziqongweni ezithile ezincane. I-395nm wavelength iyindinganiso yomkhakha ngoba ingena ngempumelelo izingqimba zeyinki ezijiyile - kufaka phakathi abamhlophe abamhlophe abamnyama abanzima ukuphulukisa - ukuqinisekisa ukuthi inki inamathela ngokuqinile ku-substrate kunokuba yome nje ebusweni.

Understanding UV wavelengths in Flexo Printing

Ekushintsheni kusuka kumalambu ajwayelekile e-mercury arc kuya kubuchwepheshe be-UV LED, ukuqonda ubude be-wavelength kubalulekile kwikhwalithi yokuphrinta nesivinini sokucindezela. Ngokungafani nezibani ze-mercury eziqhuma inhlanganisela enesiphithiphithi se-UV-A, UV-B, ne-UV-C, izinhlelo zokuphulukisa ze-UV LED zikhipha amabhendi aqondile, e-monochromatic wamandla.

Kungani i-395nm ilawula imboni

I-395nm wavelength isiphenduke "indawo emnandi" yamaphrinta welebula le-flexo namaphrinta okupakisha ngezizathu eziningana:

• Ukungena okujulile (Through-Cure): Ama-wavelengths amade (njenge-395nm) angena ngokujulile kwifilimu ye-inki kunama-wavelengths amafushane. Lokhu kuyadingeka ku-flexo, lapho ukubekwa kwe-inki esindayo kuvamile.
• Ukuhambisana kwe-Pigment: Ama-pigment amnyama (njengekhabhoni emnyama) nama-pigment abonakalayo (njenge-titanium dioxide ku-inki omhlophe) avimbela amagagasi amafushane e-UV. I-395nm wavelength ingadlula lezi zithiyo ukuphulukisa inki yonke indlela eya ezintweni eziyisisekelo.
• Izindleko nokutholakala: Ngenxa yesidingo esiphezulu, ama-chips we-LED angama-395 nm akhiqizwa ngobuningi, okwenza kube kubiza kakhulu futhi kunamandla kunezinye izinketho ze-UV LED.

Ukuze ufunde kabanzi mayelana nokuthi lobu buchwepheshe buhlangana kanjani ne-press yakho, funda mayelana UV LED Curing for Flexo & Labels.

395 nm vs. 385 nm vs. 365 nm: Uyini umehluko?

Ngenkathi i-395nm iyijwayelekile, ungase uhlangabezane namanye ama-wavelengths. Nakhu ukuthi baqhathanisa kanjani imvelo ye-flexo:

1. 395 nm (The Standard)

• Okungcono kakhulu: Ukuphrinta okujwayelekile kwe-flexo, amalebula, abamhlophe be-opaque, nokukhiqizwa okusheshayo.
• Izinzuzo: Ukwelashwa okuhle kakhulu (ukunamathela), izindleko eziphansi, ukuqina okuphezulu.
• Ububi: Ubulukhuni obuncane bokwelapha ubuso uma kuqhathaniswa nama-wavelengths amafushane (yize i-nitrogen inerting yanamuhla ixazulula lokhu).

2. 385 nm (The Hybrid)

• Okungcono kakhulu: Ama-varnishes athile noma ukumbozwa okucacile lapho ukwelashwa komhlaba kubaluleke kakhulu kunokujula.
• Izinzuzo: Indawo ephakathi phakathi komhlaba nokwelashwa okujulile.
• Ububi: Imvamisa ibiza kakhulu kunezinhlelo ezingama-395 nm ezizuza ukusebenza okuncane kwama-inks ajwayelekile.

3. 365 nm (Uchwepheshe)

• Okungcono kakhulu: Ukunamathela okukhethekile kakhulu noma ukumbozwa okuncane kakhulu.
• Izinzuzo: kuhle kakhulu ekwelapheni ebusweni nokuvimbela "ukuvinjelwa kwe-oksijini" (i-tackiness).
• Ububi: Ukungena okungalungile ngokusebenzisa ama-inki obukhulu / amnyama; izindleko eziphakeme kakhulu zemishini.

Ukuqhathaniswa kwama-wavelengths we-UV LED we-flexo

Ngingasebenzisa i-UV Ink ejwayelekile ngezibani ze-LED?

Cha, awukwazi ukusebenzisa ama-inki ajwayelekile we-UV ngamalambu e-LED. Ama-inks ajwayelekile e-UV aklanyelwe ukusabela ku-spectrum ebanzi yokukhanya ekhishwa izibani ze-mercury (UV-A, B, no-C).

Ama-inks we-UV LED aqukethe ama-photoinitiators athile aklanyelwe ukusabela kuphela kubhendi elincane le-395 nm (noma i-385 nm). Uma uzama ukwelapha inkinobho ejwayelekile ngesibani se-LED, kungenzeka ukuthi ihlale imanzi noma i-tacky ngoba ama-photoinitiators ngeke avule inqubo ye-polymerization.

Ukuze uthole ukucwila okujulile ekuguqukeni phakathi kobuchwepheshe, bheka umhlahlandlela wethu ku Kuyini ukwelashwa kwe-UV ye-LED ku-Flexo Printing?.

How does wavelength affect ink adhesion?

Ukunamathela kungumphumela wempumelelo "yokwelashwa." Uma ukukhanya kwe-UV kungafinyeleli ezansi kwesendlalelo sikayinki (lapho kuthinta khona impahla yelebula), inkinobho izophuka kalula.

• Ama-Wavelengths amafushane (200-280 nm): Kuhle ukubekwa uphawu komhlaba kepha kuvinjelwe ngama-pigments.
• Ama-Wavelengths amade (395 nm): Yenza njengomkhonto, ubhoboze i-pigment ukuphulukisa inki endaweni yokunamathela.

Lokhu kubaluleke kakhulu lapho ukhetha Best UV LED Curing System for Flexo Label Printing, njengoba uhlelo kufanele luhambisane nezidingo ezithile ze-inki yakho ukuvimbela i-delamination.

Ingabe i-wavelength ithinta iphunga emaphaketheni okudla?

Yebo, ubude be-wavelength nokusebenza kahle kokwelapha kudlala indima enkulu ekufudukeni okuphansi nokuphrinta okunephunga eliphansi. Uma inkinobho ingaphansi kokwelashwa ngoba ubude be-wavelength abuzange bujule ngokwanele, ama-monomers angalapheki ahlala evaleleke kwifilimu yeyinki.

La makhemikhali angalapheki angathuthela emaphaketheni okudla noma abangele iphunga elinamandla, elingathandeki. Ukusebenzisa uhlelo oluphezulu lwe-395nm kuqinisekisa ukwelashwa okuphelele, ukukhiya amakhemikhali kuchungechunge oluqinile lwe-polymer. Lesi yisinyathelo esibucayi uma ufuna Indlela Yokunciphisa Iphunga ku-UV Flexo Inks nge-LED Curing.

Imibuzo Evame Ukubuzwa

Kwenzekani uma ngisebenzisa i-wavelength engalungile?

Ukusebenzisa ubude obungalungile (isb., Isibani esingu-365 nm ku-inki eyenzelwe i-395 nm) kuzoholela "ekukhumbeni komhlaba." Ingaphezulu le-inki lizoma, kepha phakathi kuzohlala uketshezi, okuholela ekubambeleleni okungalungile noyinki okhipha i-substrate.

Ingabe ukukhanya kwe-395nm kuphephile ku-opharetha?

Ngenkathi i-395 nm isemaphethelweni okukhanya okubonakalayo kwe-violet, kuseyimisebe ephezulu ye-UV. Kuphephile kune-UV-C eyingozi ekhiqizwa izibani ze-mercury (ayikho i-ozone ekhiqizwayo), kepha opharetha kufanele bagqoke izingubo zokuvikela i-UV futhi bamboze isikhumba esiveziwe.

Ngingakwazi yini ukuxuba izibani ezingama-395 nm ne-385 nm ngokucindezela okukodwa?

Yebo, eminye imishini ethuthukisiwe "ye-hybrid" isebenzisa ama-wavelengths ahlukahlukene. Isibonelo, iphrinta ingasebenzisa i-395 nm yemibala eyisisekelo (CMYK) ukuqinisekisa ukunamathela okuhle kanye nesibani se-385 nm noma i-365 nm ye-varnish yokugcina ukuqinisekisa indawo enzima, engamelana nokuklwebha.

Ingabe ama-inks amhlophe adinga ubude obuthile be-wavelength?

Yebo. I-inki emhlophe iqukethe i-titanium dioxide (TiO2), ekhombisa kakhulu. I-395nm ibalulekile ku-inki emhlophe ngoba ingenye yama-wavelengths ambalwa e-UV angangena nge-TiO2 ngempumelelo ukuphulukisa ungqimba ngokuphelele.

Key Takeaways

• I-395nm yi-wavelength ejwayelekile yokuphrinta kwe-UV LED flexo ngenxa yekhono layo eliphakeme lokungena kuma-inki amakhulu.
• Ungaxubi ama-inks: Kufanele usebenzise ama-inks aklanyelwe ngokukhethekile ama-wavelengths e-LED; ama-inki ajwayelekile we-mercury UV ngeke aphuluke kahle.
• Ukunamathela okungcono: Ama-wavelengths amade afana ne-395nm aqinisekisa "ukwelashwa," ukubopha inki ngokuqinile ku-substrate.
• Ukuphepha Nephunga: Ukukhethwa okufanele kwe-wavelength kunciphisa ama-monomers angalapheki, okuholela ephunga eliphansi nokupakisha okuphephile.

Isiphetho

Ukukhetha i-wavelength efanele akuyona nje imininingwane yezobuchwepheshe—umehluko phakathi kwelebula elisezingeni eliphakeme nomsebenzi wokuphrinta owenqatshiwe. Iningi lezicelo ze-flexo, i-395nm inikeza inhlanganisela ephelele yamandla, ukungena, nokusebenza.

Uma usukulungele ukuthuthukisa umshini wakho wokucindezela noma udinga usizo lokufanisa uhlelo lwakho lokuphulukisa nokwakheka kwakho kweyinki, xhumana nathi namuhla ukuze uxoxe ngokusetha okuhle komugqa wakho wokukhiqiza.