Cov lus nug yog seb flexographic luam ntawv tuaj yeem sib tw nrog offset printing thiab gravure hauv siab -kawg daim ntawv thov ntim. Ntau xyoo ntawm kev tsim khoom siv tau teb cov lus nug ntawd.
Qhov kev txiav txim siab tiag tiag yog qhov ntim ntawm cov xim. Cov lus nug tseem ceeb yog seb nws puas tsim nyog tus nqi ntawm kev ntxiv ntau lub tshuab luam ntawv thaum tus qauv plaub- xim txheej txheem dhau lawm.
A Rau Xim Flexo Printing Tshuabua lub luag haujlwm tseem ceeb hauv qhov kev txiav txim siab no. Nws muab ib qho tsawg kawg nkaus ntawm cov nroj tsuag luam ntawv uas yuav tsum tau khiav plaub - txheej txheem xim ntxiv rau ob lub dots ntawm cov xim. Nws kuj txhawb qhov nthuav CMYK + OGV xim ntau yam. Nws tseem tuaj yeem ua haujlwm sib xyaw ua haujlwm uas sib xyaw ua ke thiab cov xim xim. Qhov no tso cai rau lub hom phiaj xim kom raug ntau dua, uas yog qhov siab - qhov kawg ntim tab tom nrhiav tam sim no.
Kev Sib Tham Xim Xim: Vim Li Cas Rau Yeej Plaub
Plaub-xim luam ntawv (CMYK) tuaj yeem rov ua dua li ntawm 55–60% ntawm qhov pom lub teeb nyob rau hauv ib txwm luam ntawv siv tus qauv ib nrab-tone dot qauv. Qib no txaus rau kev xav tau kev luam ntawv dav dav. Txawm li cas los xij, nws tsis txaus rau kev ntim khoom uas yuav tsum muaj cov xim muaj npe, Pantone qhov sib tw, cov teebmeem ntawm cov xim hlau, cov xim fluorescent, lossis cov xim ntawm cov tawv nqaij.
Thaum cov chaw luam ntawv thib tsib thiab thib rau tau ntxiv, qhov ntau ntawm cov xim nce ntau. Ib txoj kev tshawb fawb luam tawm hauv Coloration Technology (2020) ntawm kev nthuav dav xim gamut luam tawm pom tias ntxiv cov txiv kab ntxwv thiab violet inks rau CMYK nce cov xim luam tawm los ntawm 25-35% (raws li ntsuas los ntawm CIELAB).
Rau kev ntim khoom, qhov no yog qhov tseem ceeb thaum lub npe xim mus dhau CMYK. Qhov no suav nrog cov liab liab, ci txiv kab ntxwv, thiab ntshav liab, feem ntau siv hauv cov khoom noj, tshuaj pleev ib ce, thiab dej haus. Nrog rau cov chaw nres tsheb ntxiv xim, cov xim no tuaj yeem rov ua dua tshiab dua li qhov kwv yees nkaus xwb.
Ntau tshaj 90% ntawm Pantone lub tsev qiv ntawv tuaj yeem rov ua dua siv CMYK + O + V (cyan, magenta, daj, dub, txiv kab ntxwv, ntshav) ntawm Six Colour Flexo Printing Machine. Qhov no txo qhov yuav tsum tau sib tov tshwj xeeb dots ntawm number case. Nws kuj txo qhov nyuaj ntawm tus number case cia, shortens changeover lub sij hawm ntawm cov hauj lwm, thaum tuav cov xim raug.
Uncompromising tawm -- txee xim muaj peev xwm
Lwm qhov chaw siv CMYK ntxiv rau ob qhov chaw nres tsheb ntxiv. Qhov kev teeb tsa no yog siv rau ntau hom kev tsim khoom. Nyob rau hauv cov qauv no, lub tshuab luam tawm plaub xim dluab thiab ib los yog ob tug tshwj xeeb hom xim nyob rau hauv tib pass. Qhov no yog ib txwm muaj nyob rau hauv ntim factories uas ua hauj lwm ntau ntau hom. Txhua lub lag luam feem ntau xav tau nws tus kheej cov xim, thiab nws yuav tsum haum rau cov lus qhia tshwj xeeb txhua lub sijhawm.
Lub ntsiab kev sib tw ntawm lub system yog qhov tseeb ntawm kev sau npe hauv tag nrho rau lub tsev luam ntawv. Cov kev ua yuam kev me me tau qhia ntawm txhua qhov chaw. Cov kev ua yuam kev no tuaj yeem los ntawm kev sib dhos ntawm photopolymer phaj mounted ntawm lub tog raj kheej, aniline oxidase rolls, los yog variations hauv web nro ntawm qhov chaw.
TS EN ISO 12647-6: 2012 Cov txheej txheem rau kev luam ntawv flexographic Qhov no yuav tsum tau hais tias qhov sib txawv ntawm cov chaw nres tsheb yuav tsum nyob rau hauv ± 0.10 hli los xyuas kom meej cov khoom zoo.
Servo- tsav tsheb tsis siv neeg sau npe yuav tsum ua kom tiav qhov raug ntawm rau qhov chaw. Kev hloov kho ntawm phau ntawv tsis txaus, vim tias qhov yuam kev me me tuaj yeem sau los ntawm txhua qhov chaw thiab cuam tshuam rau qhov kawg luam tawm.
Rau cov hom lag luam uas xav tau cov xim palette zoo heev rau kev hloov dua siab tshiab, Six Colour Flexo Printing Machine muab cov tswv yim daws teeb meem. Plaub qhov chaw yog siv los ua cov xim, thiab ob qho yog siv los txhais cov hom tseem ceeb -xim xim rau qhov kawg tshwm sim ntawm rhawv.
UV vs. Dej-raws li Ink System: Rau nres
Kev xaiv ntawm ultraviolet curing inks thiab dej -raws li inks cuam tshuam tsis yog ib puag ncig cov cai. Qhov no kuj cuam tshuam rau qhov kawg luam tawm zoo ntawm txhua qhov chaw.
UV-kho tus number case yuav qhuav tam sim ntawd thaum raug UV teeb. Cov txheej txheem no tsim cov tshuaj lom neeg muaj zog rau ntawm qhov chaw. Piv nrog rau cov dej-raws li inks, zaj duab xis muaj ntau dua gloss, zoo khawb tsis kam thiab cov ntsiab lus meej dua. ASTM D5264 muab ib txoj kev xeem. Feem ntau, UV- kho cov ntawv luam tawm ntev li peb mus rau tsib zaug ntev dua li cov dej-raws li kev luam tawm ua ntej qhov hnyav thiab tsim kua muag tshwm sim.
Txawm li cas los xij, UV tshuab yog kim dua, vim tias txhua qhov chaw nres tsheb yuav tsum muaj UV teeb, cua txias thiab cov cuab yeej tswj ozone. UV inks kuj yuav tsum tau ua zoo rau kev soj ntsuam nrog cov ntaub ntawv raug ultraviolet lub teeb yam tsis muaj kev puas tsuaj xws li yellowing los yog brittleness.
Dej-raws li inks tseem siv dav hauv cov ntawv kraft, cov ntawv tsis muaj coated thiab qee cov khoom siv rov ua dua tshiab. Cov ntaub ntawv no nqus cov number case yooj yim dua. UV kho ntawm cov chaw no tuaj yeem ua rau lawv nyuaj dhau, uas tuaj yeem ua rau muaj teeb meem tom qab hauv lub neej, xws li folding, creasing lossis kub sealing.
Rau qhov chaw nres tsheb tuaj yeem siv ob lub tshuab. Qee qhov chaw tuaj yeem siv UV inks los tsim cov duab siab - nthuav dav. Lwm qhov chaw tuaj yeem siv dej -raws li inks ntawm cov khoom nqus dej. Qhov kev teeb tsa hybrid no tsis tuaj yeem ua tau ntawm cov tshuab uas muaj plaub lossis tsawg dua qhov chaw.
Substrate Range thiab High -end Packaging Combination
High- ntim khoom kawg tsis txwv rau ib qho khoom. Nws tuaj yeem suav nrog cov yeeb yaj kiab elastic xws li BOPP, PET thiab PE laminate. Nws kuj tseem tuaj yeem suav nrog daim duab los qhia, corrugated microflute hauv ob sab phlu, thiab cov ntaub ntawv tshwj xeeb xws li metallized films thiab holographic foil. Cov khoom sib txawv no yog siv rau hauv cov khoom ntim siab heev.
Txhua yam khoom coj txawv txawv hauv flexographic luam ntawv. Qhov sib txawv no nyob ntawm lub zog saum npoo, porosity, kub rhiab heev, thiab kev ruaj ntseg ntawm cov khoom thaum ua.
Rau lub tshuab luam ntawv hloov tau yooj yim tsim rau ntau lub substrates feem ntau muaj qhov hloov tau siab ntawm txhua qhov chaw nres tsheb. Nws kuj tseem siv cov anilox sib txawv, feem ntau yog li ntawm 400 txog 1600 kab ib nti, nyob ntawm tus number case thickness thiab kev pab them nqi. Nyob nruab nrab ntawm cov chaw nres tsheb, nws tuaj yeem suav nrog lub tshuab ziab khaub ncaws uas tuaj yeem siv rau IR ziab, cua kub, lossis UV kho nyob ntawm cov khoom siv thiab hom number case.
TAPPI T 559cm-96 muab ib txoj hauv kev rau kev ntsuam xyuas luam ntawv durability. Nws pab sib piv cov kev puas tsuaj ntawm cov inks sib txawv thiab substrate ua ke.
Thaum lub tshuab rau - nres tuaj yeem ua ntau yam khoom sib txawv, nws tus nqi nce. Nws tuaj yeem luam tawm nrog UV inks ntawm cov khoom ntim zaj duab xis lossis nrog dej -raws li tus cwj mem ntawm cov ntawv thawv ntawv. Qhov no tso cai rau ib lub tshuab ua haujlwm rau ntau hom khoom. Los ntawm qhov sib txawv, plaub - nres packers feem ntau muaj tsawg dua cov ntaub ntawv thiab tsis tuaj yeem hloov tau yooj yim ntawm kev lag luam ntim sib txawv.
Cov txheej txheem tswj xyuas kev txhais "High-End"
"High-kev ntim khoom kawg" tsis yog lo lus lag luam xwb. Nws hais txog cov kev xav tau zoo los ntawm cov qauv kev lag luam.
Ib qho kev xav tau tseem ceeb yog qhov tseeb ntawm kev sau npe, uas txhais los ntawm ISO 12647-6 li ± 0.10 hli. Lwm qhov tseem ceeb yog dot nce tswj. Hauv flexographic luam ntawv, dots nce vim tias lub phaj luam ntawv yog me ntsis mos thiab tus number case kis tau los ntawm anilox yob. Qhov no ua rau kom muaj cov ntawv luam loj dua li qhov xav tau.
ISO 12647-6 teeb tsa lub suab tus nqi nce (TVI) txwv ntawm ± 3% rau txhua qhov xim siv nkhaus. Hauv 6-xim luam ntawv hloov pauv, txhua lub tshuab luam ntawv yuav tsum tswj TVI nyias. Qhov no yog vim qhov sib txawv inks, anilox rolls, thiab qib kev pab them nqi ua rau tus cwj pwm sib txawv.
Txhawm rau tswj qhov no, cov tshuab niaj hnub siv kaw -loop spectrophotometric saib xyuas. Lub kaw lus ntsuas cov xim ntom ntom thaum luam ntawv thiab tuaj yeem kho cov xim number case. Qhov no yuav pab kom qhov zoo ntawm cov luam ntawv ruaj khov ntawm ntau lawm ceev.
Lwm qhov yuav tsum tau muaj yog uniform solid density. Qhov no yog hais txog thaj tsam ntawm cov xim ntshiab uas luam tawm sib npaug ntawm qhov dav thiab qhov ntev ntawm cov khoom. TS EN ISO 2846-1: 2017 Kev txiav txim siab qhov ntau npaum li cas rau cov txheej txheem inks.
Kev luam ntawv yog suav tias yog qhov zoo tshaj rau qhov tshwj xeeb yog tias qhov ceev sib txawv ntau dhau, txawm tias nyob hauv ± 0.05 optical density units. Inline scanning densitometers ntawm 6 lub tshuab luam ntawv tuaj yeem tshawb xyuas cov kev hloov pauv no thaum ntxov thiab txo cov khoom pov tseg piv rau cov ntawv txheeb xyuas.
Xim raug kuj ntsuas siv ΔE (Delta E), uas qhia qhov txawv ntawm lub hom phiaj xim thiab cov xim luam tawm. Hauv kev lag luam ntim khoom, ΔE Tsawg dua lossis sib npaug rau 1.0 yog suav tias yog qhov pom kev zoo ib yam, thiab ΔE Tsawg dua lossis sib npaug rau 2.0 feem ntau yog qib siab tshaj plaws rau kev ua haujlwm siab - kawg.
ΔE Tsawg dua los yog sib npaug rau 1.0 yuav tsum muaj kev ruaj khov number case formulation, tswj tus number case hloov thiab kub kom qhuav zoo ib yam. Niaj hnub no rau - nres luam ntawv xovxwm nrog automated txheej txheem tswj cov txheej txheem muaj peev xwm tswj tau cov xwm txheej no ntau dua li cov tshuab qub uas tsis muaj tiag - lub sijhawm tawm tswv yim.
Kev Sib Piv Kev Lag Luam: Rau Kev Tawm Mus
Tus nqi ntxiv ntawm kev ntxiv qhov thib tsib thiab thib rau nres rau lub tshuab luam ntawv flexo feem ntau yog kwv yees li 15 txog 25 feem pua ntawm tag nrho cov nqi tshuab. Tus nqi pes tsawg nyob ntawm qhov kis tau tus mob, solidification thiab automation qib. Seb tus nqi ntxiv no puas tsim nyog nws nyob ntawm hom kev ua haujlwm ntau lawm.
Qee qhov xwm txheej, rau -kev teeb tsa nres muaj txiaj ntsig kev lag luam tseem ceeb.
Ib qho piv txwv yog hom ntau haiv neeg. Qee cov converters ua haujlwm nrog tsib lossis ntau dua cov neeg siv khoom lag luam. Ntxiv nrog rau kev ua cov xim, txhua lub npe xav tau ib lossis ob qho xim tshwj xeeb. Lub rau - nres tshuab tuaj yeem teeb tsa cov xim no yam tsis tau hloov qhov layout ntawm qhov chaw nres tsheb number case. Qhov no txo cov sijhawm hloov pauv haujlwm rau txhua qhov haujlwm li ntawm 20-40 feeb, ua kom lub sijhawm ua haujlwm ntau lawm ib zaug.
Lwm qhov xwm txheej yog nthuav dav xim gamut luam ntawv. Thaum lub tuam txhab hloov los ntawm cov xim xim rau CMYK + OGV system, tus naj npawb ntawm cov number case setups ib txoj hauj lwm poob los ntawm 8-12 inks mus rau ib ncig ntawm 6 inks. Qhov no tuaj yeem txo lub sij hawm ntxuav thiab txo cov khib nyiab los ntawm kev sib tov. Factories uas siv txuas ntxiv -gamut workflows rau rau lossis ntau lub tshuab luam ntawv tuaj yeem txhawb nqa cov khoom lag luam li ntawm 15-25%, raws li Flexographic Technical Association.
Qhov thib peb mob yog qhov softness ntawm substrate. Rau lub tshuab tuaj yeem ua cov yeeb yaj kiab, duab los qhia thiab cov ntaub ntawv tshwj xeeb yam tsis muaj kev teeb tsa loj. Qhov no tso cai rau tib lub tshuab ua ntau hom haujlwm. Nrog kev hloov pauv tau anilox yob thiab cov kev xaiv sib txawv, lub tshuab tuaj yeem ua haujlwm rau ntau lub khw muag khoom thaum tseem siv ib kab ntau lawm.
Xaus
Qhov kev txiav txim siab los nqis peev hauv Six Colour Flexo Printing Machine rau siab -kawg ntim tsis yog feem ntau hais txog kev ntxiv ob lub chaw luam ntawv ntxiv. Nws yog hais txog kev nkag tau yooj yim dua hauv kev siv xim, kev tswj cov txheej txheem zoo dua, thiab muaj peev xwm luam tawm ntawm ntau hom ntaub ntawv. Cov txiaj ntsig no tau los ntawm kev sib txuas cov chaw ntxiv nrog cov tshuab niaj hnub xws li servo- tsav sau npe, kaw- voj voog tswj thiab sib xyaw ua ke.
Plaub lub xovxwm tseem tsim nyog rau kev ntim khoom yooj yim nrog tus nqi qis raws li lub hom phiaj tseem ceeb. Nyob rau hauv cov ntaub ntawv no, tus nqi tsev yog ib qho tseem ceeb tshaj li advanced printing zoo los yog yooj.
Txawm li cas los xij, cov kev xav tau sib txawv rau cov hloov pauv ua haujlwm hauv kev lag luam ntim hwm. Lawv xav tau cov xim muaj npe raug, ntau yam khoom siv thiab kev ua haujlwm ruaj khov. Hauv seem no, rau - nres xovxwm feem ntau yog qhov chaw qis tshaj plaws kom tau raws li kev xav tau ntawm kev lag luam tam sim no.
Kev siv
- U. Agarwal, & Gupta, R. "Printing nrog ib qho ntxiv xim gamut ntawm txiv kab ntxwv, ntsuab, thiab violet." Coloration Technology 136.3, 2020, p 224-237. (CMYK + OGV gamut nthuav dav, suav nrog CIELAB units, feem pua nce tshaj tus qauv CMYK, Pantone lub tsev qiv ntawv them nqi)
- TS EN ISO 12647 Kev Tswj Xyuas Kev Tswj Xyuas Kev Tswj Xyuas Kev Tswj Xyuas Zoo Graphic thev naus laus zis - Cov txheej txheem tswj kev tsim khoom ntawm ib nrab- cov suab xim sib cais, pov thawj thiab cov ntawv luam tawm - Ntu 6: Flexographic luam ntawv. International Organization for Standardization, 2012. (Registration tolerance ± 0.10 mm specification, tone tus nqi nce (TVI) tswj cov cai, txheej txheem tswj lub moj khaum)
- ASTM D5264 -98 (2021). Txuj kev xyaum rau kev puas tsuaj ntawm cov ntaub ntawv luam tawm rau Sutherland kev sib txhuam testers. ASTM International, 2021. (Tsim qauv rau kev puas tsuaj rau ntawm qhov chaw luam tawm, UV curing lossis dej-raws li cov ntaub ntawv sib piv cov ntaub ntawv txhais lus)
- TS EN ISO 2846 1: 2017. Graphic technology - Xim thiab pob tshab ntawm cov luam ntawv number case rau plaub-xim luam ntawv - Ntu 1: Daim ntawv- pub thiab web-fed offset printing. International Organization for Standardization, 2017. (Solid density uniformity specification, acceptable deviation thresholds, process ink density targets)
- TAPPI T 559cm-96. Print abrasion kuj ntawm daim ntawv thiab paperboard. Technical Association of the Pulp and Paper Industry, 1996. (Test code for multi-substrate print durability, method for evaluation of substrate-ink ua ke)
