Indlela yokukhetha i-LED UV yokuphulukisa ukuphrinta kwe-offset

Ezweni eliphakeme lokuphrinta kwe-offset, ukukhetha ubuchwepheshe obufanele bokwelapha kuvame ukuba umehluko phakathi kokulwa namabhodlela okomisa nokufeza ukuphula irekhodi. Indlela yokukhetha ukuphulukiswa kwe-UV ye-LED yokuphrinta kwe-offset akuyona nje ukuqhathanisa i-wattage; kumayelana nokufanisa okukhiphayo kwe-spectral kumakhemikhali akho we-inki, ukubuyisela kabusha ikhono kumishini yakho yokucindezela, nezinhloso zokusebenza emgqeni wakho ophansi. Njengoba ngibheke ukuthuthukiswa okuningi kwegumbi lokucindezela, ngifunde ukuthi uhlelo "oluhle kakhulu" yilona oluhlangana ngokungabonakali ekuhambeni kwakho komsebenzi ngenkathi luthinta ngokubonakalayo imikhawulo yakho yenzuzo.

Ngezansi kunomhlahlandlela ocacile wokuzulazula kuma-nuances ezobuchwepheshe nokusebenza kokwamukelwa kwe-UV ye-LED.

Yiziphi izici ezibalulekile ezichaza uhlelo oluhle kakhulu lokuphulukisa i-UV ye-LED?

Ukukhetha uhlelo oluhle kakhulu lokuphulukisa lwe-LED UV, hlola izinsika ezintathu ezibucayi: ukufana kwe-spectral (imvamisa i-385nm noma i-395nm), ikhono lokukhanya okuphezulu (lokungena ngesivinini esikhulu), kanye nesici sefomu lomzimba. Beka phambili izinhlelo ezinemiklamo ye-modular yesondlo esilula nokupholisa uketshezi ukuzinza okungaguquguquki kokukhipha amahora amade okushintsha.

The "Big Three" of Selection: Wavelength, Irradiance, and Integration

Lapho ngibonisana nezitolo zokuphrinta ezishintsha kusuka kumalambu ajwayelekile e-mercury noma ukomisa okususelwa kuwoyela, ingxoxo ihlala iqala nge-wavelength. Ngokungafani nezibani ze-mercury ezibanzi, i-UV ye-LED i-monochromatic. Kufanele uqinisekise ukuthi uchungechunge lwakho lwe-LED-imvamisa lufinyelela ku-385nm noma ku-395nm-luhambisana ngokuphelele nama-photoinitiators kusethi yakho yeyinki oyikhethile. Ukungalingani lapha kuholela "ekuphaketheni komhlaba," lapho inkinobho izizwa yomile kodwa ayizange iphuluke esisekelweni, okuholela ekuhlulekeni kokunamathela kamuva.

Ithebula Lokukhetha Okubucayi:

Iseluleko se-Pro: Ungamane ubheke i-wattage. Bheka umthamo (ukuminyana kwamandla kagesi). Isibani esinamandla aphezulu esine-optics empofu sizohlakaza ukukhanya futhi sehluleke ukuphulukisa ngempumelelo ngesivinini esikhulu.

Ingabe ukuphulukiswa kwe-UV ye-LED kunciphisa i-setoff ku-Offset Printing?

Yebo, ukuphulukiswa kwe-UV kwe-LED kucishe kuqede ukusetha ngokushesha, i-polymerizing inki lapho kuvezwa ukukhanya kwe-UV. Le "snap cure" esheshayo iguqula inki uketshezi ibe polymer eqinile ngaphambi kokuba ishidi ishaye inqwaba yokulethwa, okwenza anti-setoff spray powder iphelelwe yisikhathi futhi ukuvumela ukuqedwa ngokushesha.

Ukuphela kwe-Spray Powder kanye Imidlalo Yokulinda

Enye yezinto ezisheshayo kakhulu "zokunqoba" engizibona emakamelweni okushicilela ukuqedwa "komdlalo wokulinda." Ku-offset evamile, uthembele ku-oxidation kanye nokumuncwa-inqubo ehamba kancane edinga i-anti-setoff powder ukuvimbela amashidi ukuthi anganamatheli ndawonye (ukuvimba).

Nge-UV ye-LED, umshini ushintsha ngokuphelele. Asihlanzeki; Siyaphulukisa.

• I-Polymerization Esheshayo: Njengoba ishidi lidlula ngaphansi kwe-LED array (imvamisa ekupheleni kokucindezela noma i-EOP), ama-photoinitiators abangela ukusabela okuxhumanisa isiphambano oqinisa inki ngama-milliseconds.
• I-Cleaner Pressroom: Ngaphandle kwe-spray powder, ikhwalithi yomoya yegumbi lakho lokucindezela iyathuthuka, futhi uyeka ukuvala izinzwa ezibucayi namagiya wokucindezela kwakho ngothuli oluhle.
• Ukuguqulwa okusheshayo: Ungathatha isitaki esisanda kuphrintiwa nge-UV ye-LED bese usithumela ngokushesha kumsiki noma kufolda. Asikho isidingo sokulinda amahora angama-24-48 ukuze amashidi "omile."

Ukuze uthole ukujula okujulile kumishini yalesi simo, funda ukuhlaziywa kwethu okuqondile: Ingabe ukuphulukiswa kwe-UV ye-LED kunciphisa i-setoff ekushicileleni kwe-offset?

How does LED UV curing work on a sheetfed offset press?

Ukuphulukiswa kwe-UV ye-LED kumshini wokushicilela kusebenza ngokubeka ama-compact LED arrays ku-End of Press (EOP) futhi mhlawumbe i-Interdeck (phakathi kwamayunithi). Ama-arrays akhipha amandla aphezulu e-UV angena ezingqimbeni zeyinki njengoba ishidi lidlula ngesivinini esigcwele, ukuqinisekisa ukuthi ishidi elomile lilethwa enqwabeni ngaphandle kokuhlanekezelwa ukushisa.

Interdeck vs. EOP: Ukulungisa Cindezela Yakho

Ukuqonda ukuthi ungabeka kuphi izibani kubaluleke njengokuthenga izibani zokuthenga. Ngokuhlangenwe nakho kwami, ukucushwa kuncike kakhulu kuhlelo lwakho lokusebenza (isb., ukuphrinta kwezentengiselwano vs. ukupakisha).

1. Ukuphela kokucindezela (EOP): Le yindawo ejwayelekile yokufaka, etholakala ngaphambi nje kwesitaki sokulethwa. Ngomsebenzi ojwayelekile we-CMYK, ibha eyodwa yamandla aphezulu ye-LED lapha ivame ukwanela ukwelapha isithombe esigcwele.
2. Ukuphulukiswa kwe-Interdeck: Ngemisebenzi eyinkimbinkimbi ebandakanya ukumbozwa okusindayo, abamhlophe abamhlophe (ku-foil), noma ama-varnishes we-drip-off, ungadinga izibani "zokukhomba" eziphakathi kwamayunithi wokuphrinta. Lezi zinhlelo zamandla aphansi "zisetha" isakhiwo samachashazi, zivimbela ukuzuza kwamachashazi nezinkinga zokubamba ngaphambi kokuthi umbala olandelayo ubekwe phansi.

Inzuzo "yokwelashwa okupholile":

Ngokungafani nezinhlelo ze-H-UV noma zeMercury eziqhumisa i-substrate ngokushisa kwe-infrared (IR), i-UV ye-LED "iyikhambi elibandayo." Inqwaba yokulethwa ayigcini ukushisa. Ngibonile amaphrinta elwa nama-substrates epulasitiki aphenduka ngaphansi kwezibani ze-mercury - i-LED ixazulula lokhu ngokushesha, ivula imifudlana yemali yokuphrinta ku-PVC, ucwecwe, namaphepha okwenziwa.

Funda kabanzi mayelana nemishini ethile lapha: Indlela ukuphulukiswa kwe-UV ye-LED kusebenza ngayo ku-Sheetfed Offset Press

Yini okufanele uyihlole ngaphambi kokubuyisela kabusha i-UV ye-LED ku-offset press?

Ngaphambi kokubuyisela kabusha, kufanele uhlole umshini wakho wokuhambisana kwezinto ze-ink roller (i-EPDM iyadingeka), amandla kagesi, kanye nesikhala esikhona sokukhuphuka. Ngaphezu kwalokho, qinisekisa ukuthi uhlelo lwakho lokumanzisa lungaphatha iwindi elincane lokulinganisela amanzi lama-inki we-LED nokuthi uhlelo lwakho lokupholisa lungakwazi ukwamukela imigqa yokupholisa ye-LED.

The Retrofit Readiness Checklist

Ukubuyisela kabusha kuvame ukubiza kakhulu kunokuthenga umshini omusha, kepha kudinga ukukhuthala okufanele. Ngike ngabona isitolo sifaka uhlelo lwe-LED olusezingeni eliphakeme kuphela ukuze ngiqaphele ukuthi ama-roller abo avuvukele kungakapheli isonto ngoba abazange bashintshele enjoloba ehambisana ne-UV. Ungalenzi lelo phutha.

Ukuhlolwa Kwangaphambi Kokufakwa Okubalulekile:

• Ukwakheka kwe-Roller: Ama-roller enjoloba ajwayelekile azowohloka lapho evezwa kuma-monomers kuma-inki we-UV. Kufanele uphinde uhlanganise noma ubeke esikhundleni sazo nge-EPDM (Ethylene Propylene Diene Monomer) rollers.
• I-Headroom kagesi: Ngenkathi i-LED igcina amandla jikelele uma kuqhathaniswa ne-mercury, ukudonsa okuphezulu okusheshayo kudinga ukunikezwa kwamandla okuzinzile. Hlola ukuzinza kwamandla kagesi.
• Ingqalasizinda yokupholisa: Iningi lezinhlelo zokusebenza eziphezulu ze-LED zipholile ngamanzi. Ingabe unayo indawo ye-chiller unit? Ingabe umzila wamapayipi osuka ku-chiller uye ephrini ucacile?
• Ukuvikelwa kokukhanya: Ukukhanya kwe-UV akubonakali kepha kulimaza amehlo. Qinisekisa ukuthi uhlelo lwakho lokubuyisela kabusha lufaka ukuqapha ukukhanya okufanelekile kanye nama-baffles ukuvimbela ukuvuza kokukhanya egumbini lokucindezela.

Thola ukuhlukaniswa okugcwele kwezinyathelo ezidingekayo lapha: Yini okufanele uyihlole ngaphambi kokubuyisela emuva i-UV ye-LED ku-Offset Press

Uyibala kanjani i-ROI ye-LED UV Curing?

I-ROI iqhutshwa ukonga amandla (ukunciphisa okungu-50-70%), okwandisiwe komthamo wokucindezela (akukho sikhathi sokumisa), kanye nokulondolozwa kwezinto ezibonakalayo (akukho powder yokufafaza). Amaphrinta amaningi abona ukubuya kokutshalwa kwezimali ezinyangeni eziyi-12 kuya kwezingu-24, ikakhulukazi ngenxa yekhono lokuphrinta kuma-substrates aphezulu futhi anciphise imfucuza ehambisana nemisebenzi yesibani se-mercury "yokuqala".

The Hidden Financial Levers

Lapho ufaka lokhu kutshalwa kwezimali kubabambiqhaza, bheka ngale kwe-bill kagesi. Ngenkathi ukonga i-60% kugesi kuhle, imali yangempela isekukhiqizeni.

• Ukusebenza kahle kwesikhathi: Izibani ze-LED zivula / zicime ngokushesha. Izibani zeMercury zidinga imijikelezo yokushisa nokupholisa. Uma ugijima isitolo ngezinguquko zomsebenzi njalo (ukugijima okufushane), i-LED iqeda amahora wesikhathi esingasebenzi ngesonto.
• Izindleko Zokushintshwa Kwe-Bulb: Ama-Mercury bulbs awohloka ngokushesha futhi adinga ukushintshwa njalo emahoreni ayi-1,000-2,000. Ama-LED arrays ngokuvamile ahlala amahora angama-20,000 +. Eminyakeni emihlanu, imali ekhokhwayo yodwa ingakwazi ukukhokhela ingxenye enkulu yohlelo.
• Ukuguquguquka kwe-Substrate: Ikhono lokuphrinta kumapulasitiki azwela ukushisa ngaphandle kokugoqa likuvumela ukuthi ukhokhise amanani e-premium ngemisebenzi ekhethekile yokupakisha eyayingenakwenzeka ngaphambili.

Yikuphi ubude be-wavelength obukulungele: 385nm, 395nm, noma okuxubile?

Ngezinhlelo zokusebenza eziningi ezijwayelekile zokuphrinta i-offset, i-395nm iyindinganiso yomkhakha ngenxa yekhono layo eliphakeme lokungena nokutholakala kweyinki. Kodwa-ke, i-385nm iya ngokuya ikhethwa ngezicelo ezikhethekile njenge-varnishes ecacile noma abamhlophe lapho ukuphuzi (umphumela ohlangothini wamanye ama-photoinitiators) kufanele kuncishiswe.

Isayensi ye-Spectral Matching

• I-395nm: "I-Workhorse." Ingena ekujuleni kwemibala emnyama, eminyene (njengama-inki amnyama noluhlaza okwesibhakabhaka). Iningi lama-inki we-offset we-LED alungiselelwe leli -wavelength. Inikeza ukujula okuhle kakhulu kwephuluki ngentengo.
• I-385nm: "Ingcweti." Isetshenziselwe ukuphulukiswa komhlaba we-coatings kanye ne-varnishes ephezulu. Iphulukisa ubuso ngokushesha, inikeze ukuqedwa okuqinile, okumelana nokuklwebha, kepha kungase kulwele ukungena ezingqimbeni ezijiyile, ezimnyama ze-pigment ngempumelelo njenge-395nm.
• I-Multi-Wavelength Arrays: Ezinye izinhlelo ezithuthukile manje zixuba ama-chips ukuze zithole okungcono kakhulu komhlaba womabili, yize lokhu kwandisa ubunzima nezindleko.

Iseluleko sami: Namathela ku-395nm ngaphandle kokuthi unesidingo esithile sobuchwepheshe se-varnishes ephuzi eliphansi. Inesekelo ebanzi kunazo zonke emakethe ye-inki.

Imicabango yokugcina ngokukhetha

Ukukhetha uhlelo lwe-UV lwe-LED kungukubambisana kwamasu, hhayi nje ukuthengwa kwehadiwe. Funa umkhiqizi onikeza ukwesekwa okuqinile ngemuva kokuthengisa futhi oqonda i-geometry ethile yomkhiqizo wakho wokucindezela (i-Heidelberg, i-Komori, i-Manroland, njll.).

Ngokugxila ekuhlanganisweni kokuhambisana kwe-wavelength, ukulingana kwemishini, nokulungela ukusebenza, uqinisekisa ukuthi ukuthuthela kwakho ku-LED UV akuyona nje ukuthuthukiswa-kungukuguqulwa kwemodeli yakho yebhizinisi.