Yimaphi ama-inki ahambisana ne-LED UV Offset Curing?

Ukuze usebenzise ngempumelelo umshini wokucindezela we-UV we-LED, kufanele usebenzise ama-inki we-UV aqondene ne-LED aklanyelwe ukwelapha ngaphakathi kwebanga elincane le-UVA wavelength le-385nm kuya ku-395nm. Ngokungafani nama-inks ejwayelekile e-UV adinga ukukhanya okubanzi kusuka ezibani ze-mercury, ama-inks e-LED e-UV ancike kuma-photoinitiators asebenzayo kakhulu abangela i-polymerization ngokushesha ngaphansi kokukhishwa kwe-LED okushisayo okuphansi.

Ukuzama ukusebenzisa ama-inki ajwayelekile we-UV noma asekelwe kuwoyela ngohlelo lokuphulukisa lwe-LED kuzoholela ekutheni amashidi angalapheki, ama-tacky kanye nokulimala kwemishini engaba khona. Ukuze usebenze kahle, udinga ama-inki we-offset "high-reactivity" (HR) noma "aphulukkayo e-LED", atholakala kalula kubakhiqizi abakhulu abanjengoHubergroup, T & K Toka, Toyo, ne-INX.

Isayensi Ngemuva Kokuhambisana Kwe-LED UV Ink

Ukuqonda ukuthi kungani kudingeka ama-inki athile kuqala ngenqubo yokuphulukisa. Izibani ezijwayelekile ze-UV zihlasela ishidi ngokukhanya okubanzi (kusuka ku-200nm kuya ku-700nm). Ngokuphambene nalokho, izibani ze-UV ze-LED zikhipha isiqongo esiqondile, se-monochromatic samandla.

Photoinitiators: The Key Ingredient

Umehluko oyinhloko kuma-inki we-UV we-LED yiphakethe le-photoinitiator.

• Ama-UV Inks ajwayelekile: Aqukethe ama-photoinitiators amunca amandla ebanzi, kufaka phakathi i-UVC yamagagasi amafushane (ama-LED angakhiqizi).
• Ama-Inks e-LED UV: Yakhelwe ngama-photoinitiators azwela ngokukhethekile kumabhendi we-385nm noma angama-395nm. Lezi zivame ukubiza kakhulu kepha zinikeza ukusebenza okuphezulu kakhulu, okuvumela inkinobho ukuthi iphulukise ngokushesha ngisho nokuminyana kwamandla aphansi kwama-arrays e-LED.

Viscosity and Rheology

Ama-inki we-UV we-LED avame ukuba nephrofayili ye-viscosity ehluke kancane ukwamukela ukuntuleka kokushisa kwabezindaba.

• Ukuphathwa Kokushisa: Izibani ezijwayelekile ze-UV zikhiqiza ukushisa okukhulu, okunciphisa inki kuma-rollers.
• I-viscosity ezinzile: Njengoba UV LED curing systems run cool, ama-inks e-LED aklanyelwe ukugcina izakhiwo ezizinzile ze-tack nokugeleza emazingeni okushisa aphansi okusebenza (imvamisa i-20 ° C - 25 ° C), ukuvimbela izinkinga ezifana nenqwaba noma inkungu.

Ungasebenzisa ama-inki ejwayelekile we-UV ngezinhlelo ze-LED?

Cha, awukwazi ukusebenzisa inki ejwayelekile ye-UV ngohlelo lokuphulukisa lwe-LED.

Lona umbono oyiphutha ojwayelekile embonini. Uma usebenzisa ama-inki ajwayelekile we-UV ngaphansi kwezibani ze-LED:

1. Ukwelashwa okungaphelele: Ubuso beyinki bungazizwa bomile (ngenxa yokugqagqana okuthile ku-UVA spectrum), kepha "ukwelashwa" (ukunamathela ku-substrate) kuzohluleka.
2. Izinkinga ze-Rub-Off: I-inki kungenzeka ihlikihla ngesikhathi sokuqeda noma ukuthumela.
3. Wasted Energy: Uzodinga ukugijima umshini ngesivinini esihamba kancane ukuze uzuze ngisho ukwelashwa okuyingxenye yokwelashwa, ukuphika izinzuzo zokusebenza kahle ze-LED.

Kodwa-ke, okuphambene nalokho kuvame ukuba yiqiniso: ama-inks e-LED e-UV angalapheka ngezibani ezijwayelekile ze-mercury, njengoba izibani ze-mercury zikhipha ama-wavelengths angama-385-395nm adingekayo ngama-inki we-LED. Lokhu kwenza ama-inks e-LED abe inketho eguquguqukayo "yokusetshenziswa kabili" yezitolo zokuphrinta ezisebenzisa ukucushwa kwe-hybrid press.

Izici ezibucayi zokukhetha ama-LED UV

Lapho ukhetha uchungechunge lwe-inki, cabanga ngalezi zici ezintathu zobuchwepheshe ukuqinisekisa ukuhambisana nokusetha kwakho okuqondile kokucindezela.

1. Ukufanisa ubude be-Wavelength

Qinisekisa ukuthi umphakeli wakho we-inki uhambisana nokuzwela kwe-inki ekukhiqizeni isibani sakho.

• I-395nm: Indinganiso yomkhakha yokuphrinta kwe-offset. Iningi le-HR (High Reactivity) ne-LED inks zilungiselelwe lokhu.
• I-385nm: Kwesinye isikhathi isetshenziswa ekuhlanganisweni okukhethekile noma izinhlelo zokusebenza ze-inkjet kepha ezingavamile kakhulu ku-offset ngenxa yezindleko.

2. Ukuhambisana kwe-substrate

Enye yezinzuzo ezinkulu ze-UV ye-LED yikhono lokuphrinta kuma-substrates azwela ukushisa. Qinisekisa ukuthi uchungechunge lwakho lwe-inki luyahambisana nalokhu:

• Amapulasitiki (PVC, PET, PP): Idinga ama-inks aneziphakamisi eziphakeme zokunamathela.
• Amaphepha angafakwanga: Idinga ama-inks anokubamba okuphezulu ukuvimbela ukumuncwa ngaphambi kokuphulukisa.
• Amaphepha e-Metallized: Idinga izakhiwo ezinhle kakhulu zokumanzisa ebusweni.

3. Amakhono we-Dual-Cure

Uma une-press enezibani ze-LED eziphakathi ne-deck kanye nezibani ze-mercury zokuphela (ukusethwa kwe-hybrid), cela ama-inki we-Dual-Cure. Lokhu kukuvumela ukuthi ushintshe phakathi kwezindlela zokuphulukisa ngaphandle kokugeza umshicilelo, ukwandisa isikhathi sokuphumula.

Uhlu lokuhlola olubalulekile lwenguquko ye-inki

Uma ushintsha umshini wokushicilela, ungamane ushintshe inki. Kufanele ulungiselele yonke inki isitimela.

• Ama-Rollers: Kufanele usebenzise ama-roller e-EPDM aklanyelwe ukuphrinta kwe-UV. Ama-roller enjoloba ajwayelekile azovuvukala futhi aqhekeke lapho evezwa kuma-monomers e-UV.
• Washes: Sebenzisa kuphela ukugeza okuhambisana ne-UV. Ukugeza okususelwa kuwoyela kuzongcolisa inki futhi kuvimbele ukuphulukiswa.
• Izingubo zokulala: Faka izingubo zokulala ze-UV ezinikezele ukuqinisekisa ukudluliswa kweyinki efanele nokukhululwa.

Bheka umhlahlandlela wethu ogcwele ku yini okufanele uyihlole ngaphambi kokubuyisela kabusha i-UV ye-LED kumshini wokucindezela we-offset ukuze uthole ukuphazamiseka okuphelele.

Imibuzo Evame Ukubuzwa

Uyini umehluko phakathi kwe-H-UV, LE-UV, ne-LED-UV inks? I-H-UV (i-Komori) ne-LE-UV (i-Low Energy) yamagama aphathelene noma ajwayelekile wezinhlelo zokuphulukisa amandla aphansi ezingasebenzisa izibani ze-mercury noma ama-LED. Yize imiqondo ifana, ama-photoinitiators ahlukile. Njalo ucacise "i-LED-elapheka" kumthengisi wakho we-inki ukuqinisekisa ukuthi ama-photoinitiators ahambisana nokukhishwa kwe-LED kwe-395nm.

Ingabe ama-inki we-UV e-LED abiza kakhulu? Yebo, ama-inki we-UV we-LED ngokuvamile abiza kakhulu ngo-10-20% kunama-inks ejwayelekile e-UV ngenxa yezindleko zama-photoinitiators akhethekile. Kodwa-ke, lezi zindleko zivame ukuncishiswa ukonga amandla (kuze kufike ku-70%), izikhathi zokomisa ezisheshayo, nokuqedwa kwe-anti-setoff powder. Funda kabanzi esihlokweni sethu: Indlela yokukhetha i-LED UV Curing for Offset Printing.

Ingabe ama-inki we-UV e-LED adinga isixazululo esikhethekile somthombo? Yebo, ngokuvamile udinga isixazululo somthombo esihambisana ne-UV. Ngoba ama-inki we-LED agijima epholile futhi anezici ezihlukile zokulanda amanzi kunama-inks asuselwa kuwoyela, isixazululo sakho sokumanzisa sidinga ukulungiswa ukuze silondoloze ibhalansi efanele ye-inki-amanzi.

Ingabe ukwelashwa kwe-LED UV kuqeda i-setoff? Impela. Ngoba inki iphulukisa ngokushesha lapho ivezwa ekukhanyeni, amashidi omile ngaphambi kokuthi ashaye inqwaba yokulethwa. Lokhu kuqeda ngokuphelele i-setoff kanye nesidingo se-spray powder. Funda kabanzi lapha: Ingabe ukuphulukiswa kwe-UV ye-LED kunciphisa i-setoff ekushicileleni kwe-offset?.

Key Takeaways

• Ukwakheka okukhethekile: Kufanele usebenzise ama-inks abhalwe ukuthi "LED-UV" noma "High Reactivity (HR)," alungiselelwe ngokuqondile kuma-wavelengths angama-385-395nm.
• Akukho ukuhambisana kwesiphambano: Ama-inks ajwayelekile we-UV ngeke aphuluke kahle ngaphansi kwezibani ze-LED, yize ama-inks e-LED evame ukusebenza ngaphansi kwezibani ezijwayelekile.
• Ingqikithi System Approach: Ukushintshela kuma-inki we-LED kudinga ama-roller we-EPDM ahambisanayo, ukugeza kanye nezingubo zokulala.
• Izindleko vs. Inani: Ngenkathi izindleko ze-inki ngekhilogremu ngayinye ziphakeme, ukonga ukusebenza kahle kwamandla nezikhathi zokujika okusheshayo kuvame ukukhiqiza i-ROI ephezulu.

Isiphetho

Ukukhetha inki efanele kuyisici esisodwa esibaluleke kakhulu empumelelweni yomsebenzi wakho wokuphrinta we-UV we-LED. Ngokuqinisekisa ukuthi ukhetha uchungechunge lwekhwalithi ephezulu olwenzelwe i-spectrum ye-395nm, uvula amandla agcwele wokucindezela kwakho—amachashazi amancane, ubucwebezelisi obuphezulu, nokuqedwa okusheshayo.

Ukulungele ukwandisa inqubo yakho yokuphulukisa? Xhumana nathi namuhla ukuze uxoxe ngokuthi yiluphi uhlelo lokuphulukisa lwe-LED UV oluhambisana nezidingo zakho ezithile ze-inki nokukhiqiza.