Ukuphrinta kwe-offset UV LED Curing System: Izinketho zokuhlanganiswa

Ukuhlanganisa uhlelo lokuphulukisa lwe-UV LED lokuphrinta ngokujwayelekile kuhilela ukufaka ama-arrays e-LED aphezulu ekugcineni kokucindezela (EOP) noma phakathi kwamayunithi wokuphrinta (interdeck). Lobu buchwepheshe buthatha indawo yama-dryers emoyeni oshisayo noma we-mercury UV, okuvumela ukuphulukiswa okusheshayo kwama-inks kuwo womabili amaphepha ajwayelekile kanye nama-substrates okwenziwa azwela ukushisa. Ezitolo eziningi zokuphrinta, ukuhlanganiswa kuza ngezindlela ezimbili eziyinhloko: ukubuyisela kabusha umshini okhona we-sheetfed ngamakhanda wesibani se-LED noma ukucacisa umshini omusha ngohlelo lwe-OEM olufakwe ngaphambilini. Inzuzo eyinhloko ilele "ekwelapheni okupholile"; ngoba i-UV ye-LED ikhipha ama-wavelengths athile (imvamisa i-385nm noma i-395nm) ngaphandle kokushisa okukhulu kwe-infrared kwezibani ezivamile, ungaqeda i-spray powder, unciphise ukusetshenziswa kwamandla kuze kufike ku-70%, futhi uhambise izinqubo zokuqeda ngokushesha ku-bindery.

Retrofitting vs. New Press Integration

Lapho ucabanga ukuthuthukiswa kwe-UV LED, isinqumo sokuqala ngokuvamile ukuthi uthuthukise imishini yakho yamanje noma utshale imali kumishini emisha yemali. Zombili lezi zindlela zisebenzisa ubuchwepheshe obufanayo be-LED, kepha inqubo yokuhlanganiswa iyahlukahluka.

Retrofitting Existing Presses

Ukubuyisela emuva kuyisinqumo esithandwayo sokwandisa impilo yensimbi enokwethenjelwa. Uhlelo lokuphulukisa lwe-UV LED lokuphrinta lwe-offset luhlangene ngokwanele ukuthi lungangena ezikhaleni zokulethwa noma ze-interdeck zemishini eminingi ejwayelekile (njengeHeidelberg, iKomori, noma iManroland) ngaphandle kokulungiswa okukhulu kwemishini.

• Izinzuzo: Ukutshalwa kwezimali kokuqala okuphansi; isebenzisa isisekelo sabezindaba esikhona.
• Ububi: Kudinga isikhathi sokuphumula ukufakwa; kungadinga ukuvuselela ama-roller nezingubo zokulala ukuze zihambisane ne-UV.

Ukuhlanganiswa kwe-OEM

Ukuthenga umshini omusha nge-UV ye-LED ehlanganisiwe efektri kuqinisekisa ukuxhumana okungenamthungo phakathi kwekhonsoli yokucindezela nohlelo lokuphulukisa. Imigqa yokupholisa, ukunikezwa kwamandla kagesi, kanye nokuphepha kwakhiwe ekwakhiweni kwabezindaba kusukela osukwini lokuqala.

Qaphela: Noma ngabe ubuyisela kabusha noma uthenge usayizi omusha, ofanele wesistimu ubalulekile. Ukuze uthole umhlahlandlela wokulinganisa nokucaciswa, funda i-athikili yethu kuIndlela Yokukhetha I-LED UV Curing for Offset Printing.

Ungakwazi yini ukusebenzisa inkinobho ye-UV ekucindezeleni okujwayelekile kwe-offset?

Yebo, kepha awukwazi ukumane ufake inkinobho ye-UV emshinini ojwayelekile ngaphandle kokuguqulwa; kufanele ufake umthombo wokukhanya wokuphulukisa futhi uqinisekise ukuthi ama-roller akho ahambisana ngamakhemikhali.

Ama-inki ajwayelekile we-offset owomile ngokumuncwa kanye ne-oxidation, inqubo ehamba kancane ethatha amahora noma izinsuku. Ama-inki e-UV awamile—"aphulukisa" (polymerize) ngokushesha lapho evezwa ekukhanyeni kwe-UV. Ukuze usebenzise la ma-inki ngokucindezela okujwayelekile, kufanele ufake uhlelo lokuphulukisa lwe-UV lwe-LED. Ngaphezu kwalokho, amakhemikhali we-UV inks anolaka. Ama-roller enjoloba ajwayelekile nezingubo zokulala zingavuvukala noma zithobeke phansi uma zisetshenziswa ngama-monomers e-UV. Ngakho-ke, ukuguqula umshini "ojwayelekile" kuvame ukubandakanya ukufaka esikhundleni sesitimela se-roller nge-EPDM noma amakhemikhali enjoloba ahlanganisiwe amelana nama-solvents anzima kumakhemikhali e-UV.

Uyini umehluko phakathi UV futhi LED UV offset ukunyathelisa?

Umehluko omkhulu umthombo wokukhanya nobude be-wavelength: I-UV yendabuko isebenzisa ama-mercury bulbs akhipha ububanzi obubanzi bokukhanya nokushisa okuphezulu, kuyilapho i-LED UV isebenzisa ama-diode akhipha i-spectrum emincane, epholile.

Izibani zendabuko ze-mercury arc zikhiqiza ukukhishwa kwe- "broadband", ukuqhumisa ishidi nakho konke kusuka ku-UV-C kuya ku-infrared (IR). Ngenkathi lokhu kwelapha inki, kubuye kukhiqize ukushisa okukhulu (kuze kufike ku-800 ° F ku-bulb) ne-ozone, okudinga ukukhishwa okukhulu.

Ngokuphambene nalokho, uhlelo lokuphulukisa lwe-UV LED lokuphrinta lwe-offset lukhipha okukhiphayo kwe-monochromatic (imvamisa igxile ku-385nm noma i-395nm). La mandla agxile ngokuphelele ekwelapheni inki, hhayi ukushisa igumbi noma i-substrate.

Ukuqhathanisa: Mercury UV vs. LED UV

Isebenza kanjani ukuphulukiswa kwe-UV LED ku-offset?

Ukuphulukiswa kwe-UV LED kusebenza ngokuqhumisa ama-photoinitiators ku-inki ngamandla aphezulu e-UV, okubangela ukusabela okusheshayo okuguqula inki ewuketshezi ibe yifilimu eqinile efana nepulasitiki.

Esimweni se-offset, lokhu kwenzeka ngengxenyana yomzuzwana njengoba ishidi lidlula ngaphansi kohlu lwesibani. Ngoba inkinobho iyaqina ngokushesha, "owomile-emuva" (ukushintsha umbala njengoba inki yoma) kuyasuswa. Ishidi eliphrintiwe lifika enqwabeni yokulethwa yomile ngokuphelele.

Ukuze wenze lokhu, ukwakheka kwe-inki kufanele kuhambisane nokukhiqizwa kwesibani. Njengoba izibani ze-LED zingakhiphi i-UV-C emfushane ephulukisa ubuso be-UV ejwayelekile, kufanele usebenzise ukwakheka ngokuqondile "doped" ukusabela kuma-wavelengths e-UV-A (385-395nm). Ukuze uthole ukucwila okujulile ekukhethweni kwezinto ezibonakalayo, bheka umhlahlandlela wethu ku Yimaphi ama-inks ahambisana ne-LED UV Offset Curing?.

Optimizing Lamp Positioning: Interdeck vs. EOP

Ukubekwa ngokomzimba kwezibani kuthinta amakhono akho okuphrinta, ikakhulukazi emisebenzini eyinkimbinkimbi ebandakanya inki omhlophe noma ukumbozwa okusindayo.

End of Press (EOP)

Ukucushwa okuvame kakhulu ukubeka ibha yokuphulukisa ekugcineni kokucindezela, ngaphambi nje kokuba ishidi lifakwe.

• Umsebenzi: Ukwelapha yonke imibala (CMYK) ngasikhathi sinye.
• Okuhle kakhulu: Umsebenzi ojwayelekile wezohwebo wemibala emi-4.

Interdeck Curing

Izibani ze-Interdeck ziyunithi ezihambayo ezibekwe phakathi kwemibhoshongo yokuphrinta (isb., ngemuva kweyunithi ye-cyan noma ngemuva komhlophe omhlophe).

• Umsebenzi: "Izikhonkwane" noma usetha inki ngaphambi kokuthi umbala olandelayo ubekwe phansi.
• Okuhle kakhulu: Ukuphrinta kupulasitiki (ukuvimbela inzuzo yamachashazi), ukubamba ukumbozwa kweyinki esindayo, noma ukuphrinta okumhlophe okumhlophe ku-foil.

Lapho izibani zakho sezibekiwe, ibanga lomzimba ku-substrate libalulekile. Uma isibani sikude kakhulu, ukuminyana kwamandla (umthamo) kuyancipha, okuholela ekuguqukeni. Ukuze uthole imikhuba emihle kakhulu kuzilungiselelo zegebe namazinga wamandla, bhekisa ku- Sheetfed LED UV Curing Setup Tips for Consistent Cure.

Imibuzo Evame Ukubuzwa

Ngabe ngidinga ukushintsha ama-roller ami ukuze ngishintshele ku-UV ye-LED?

Ngokuvamile, yebo. Ama-roller ajwayelekile asuselwa kuwoyela angavuvukala lapho evezwa kuma-monomers we-UV inki. Kufanele ushintshele ku-EPDM noma kuma-roller we-"combi" aklanyelwe ukuphatha ama-inks ajwayelekile ne-UV uma uhlela ukushintsha emuva naphambili.

Ingabe ukuphrinta kwe-UV kwe-LED kubiza kakhulu kune-offset evamile?

Ama-inki abiza kakhulu ngekhilogremu ngayinye, kepha izindleko zokukhiqiza eziphelele zivame ukuphansi. Wonga imali ngokuqeda i-spray powder, ukunciphisa izikweletu zamandla, ukusika imfucuza yephepha / ukonakala, nokususa isidingo sokuvikela ukumbozwa kwamanzi isikhathi esomile.

Ngingakwazi yini ukubuyisela umshini omdala kakhulu?

Yebo, inqobo nje uma kunendawo ebonakalayo yokukhweza amakhanda esibani (imvamisa idinga amasentimitha ayi-10-15 emvume ekulethweni). Kodwa-ke, isimo sabezindaba sibalulekile; Ukwelashwa okusheshayo kudinga ukubhaliswa okuzinzile.

Iyini isikhathi sokuphila kwesibani se-UV se-LED?

Ama-LED arrays ngokuvamile ahlala ngaphezu kwamahora angama-20,000 wesikhathi "on". Njengoba zicima ngokushesha phakathi kwamashidi noma lapho umshini wokucindezela uyeka, lokhu kungahumusha eminyakeni engu-5-10 yokuphila kokukhiqiza, uma kuqhathaniswa namahora ayi-1,000 ama-mercury bulbs.

Ingabe i-LED UV idinga i-exhaust ducting?

Cha. I-UV ye-LED ayikhiqizi i-ozone, ngakho-ke awudingi ukukhishwa kophahla olubizayo futhi olukhulu oludingekayo ezinhlelweni zendabuko ze-mercury UV.

Key Takeaways

• Ukuhlanganiswa Nokuguquguquka: Ungabuyisela kabusha imishini ekhona ye-offset noma uthenge izinhlelo ezintsha ze-OEM; zombili zisebenzisa ubuchwepheshe obufanayo be-LED.
• Ukomisa okusheshayo: I-LED UV iphulukisa inkinobho ngokushesha, ivumela amashidi ukuthi aye ngqo ku-bindery ngaphandle kwe-spray powder noma isikhathi sokumisa.
• Ukunciphisa ukushisa: "Ukwelashwa okupholile" kwenza ukuphrinta kumapulasitiki azwela ukushisa kanye nama-foil ngaphandle kokuhlanekezela.
• Ukonga Amandla: Lindela ukwehliswa kwamandla okungu-50-70% uma kuqhathaniswa ne-mercury yendabuko ye-UV noma i-dryer yomoya oshisayo.

Isiphetho

Ukushintshela ohlelweni lokuphulukisa lwe-UV LED lokuphrinta kungenye yezithuthukisi ezinomthelela omkhulu iphrinta yezentengiselwano engazenza. Iguqula umshini wokushicilela wendabuko ube ngumshini we-hybrid okwazi ukuphrinta kumapulasitiki, ucwecwe, namasheya angafakwanga ngokudlidliza okuphezulu nesivinini. Noma ngabe ukhetha ukubuyisela kabusha noma ukuthenga okusha, ukususwa kokushisa, i-ozone, nesikhathi sokulinda kudala igumbi lokucindezela elinenzuzo futhi elisebenza kahle.

Ukulungele ukuthuthukisa umshini wakho? Hlola isitimela sakho samanje se-roller nomthamo wamandla, bese uthintana nochwepheshe ukuthola ukuthi ngabe ukucushwa kwe-EOP kuphela noma kwe-Interdeck kufanelana kangcono nenhlanganisela yakho yomkhiqizo.