Flexographic luam ntawv dot expansion? Thaiv lub rooj tsavxwm? Koj puas tau pom cov ntsiab lus no?

Flexographic luam ntawv dot expansion? Thaiv lub rooj tsavxwm? Koj puas tau pom cov ntsiab lus no?

Hauv flexographic luam ntawv, dot o thiab blockage yog ob qho teeb meem tseem ceeb tshaj plaws cuam tshuam rau kev luam ntawv zoo. Qhov no tsis yog tsuas yog ua rau poob ntawm cov duab cov khaubncaws sab nraud povtseg tab sis tseem cuam tshuam rau kev luam tawm kom pom tseeb thiab sib xws, ua rau muaj kev poob qis hauv kev luam tawm. Yog li, dab tsi yog qhov tseem ceeb ua rau kev nthuav dav ntawm flexographic dots thiab phaj thaiv? Hauv tsab xov xwm no, tus kws sau ntawv txheeb xyuas cov kev daws teeb meem ua tau los ntawm ntau qhov kev xav, suav nrog prepress phaj optimization thiab ink formulation adjustments, thiab printing siab tswj, rau siv los ntawm kev lag luam cov phooj ywg.

Flexographic dot loj nthuav dav

Dot enlargement yog ib qho tshwm sim hauv flexographic luam ntawv. Dot expansion feem ntau tshwm sim vim hais tias thaum tus number case hloov los ntawm lub phaj nruas mus rau lub substrate, tus number case diffuses tom qab nqus, ua rau cov dots mus ntxiv, uas cuam tshuam rau daim ntawv qhia meej thiab xim saturation.

Hauv flexographic luam ntawv, dot expansion yog ntau heev. Piv txwv li, qhov taw tes taw qhia thaum pib ntawm 50% tuaj yeem nthuav mus rau 51% ntawm cov ntawv luam ntawv, thiab cov ntsiab lus ntawm cov khoom luam tawm zaum kawg tuaj yeem nthuav mus rau 65% lossis ntau dua. Qhov tshwm sim ntawm dot expansion feem ntau yog los ntawm cov yam ntxwv ntawm tus cwj mem siv hauv flexographic luam ntawv thiab compressibility ntawm cov ntawv luam ntawv. Nws yog ib qho tsim nyog sau cia tias qhov tshwj xeeb ntawm cov dot nthuav dav txawv nyob ntawm seb hom luam ntawv xovxwm thiab hom substrate.

01

Kev luam ntawv siab

Nyob rau hauv flexographic printing, number case hloov nyob rau hauv lub teeb siab. Thaum lub sij hawm tus txheej txheem no, lub phaj hloov tau yooj yim ua rau me ntsis deformation thiab compression thaum cov duab hloov mus nias, uas yog qhov tseem ceeb vim li cas rau dot o. Yog tias lub tshuab luam ntawv siab dhau lawm, qhov deformation ntawm lub tshuab luam ntawv hloov pauv tau ntau dua, thiab qhov nthuav dav ntawm cov dots yuav hnyav dua.

02

Phaj hardness

Lub hardness ntawm cov ntawv luam ntawv cuam tshuam qhov℃ntawm dot expansion. Cov phaj nyuaj deform tsawg dua cov phaj softer, ua rau cov dot nthuav dav. Txhawm rau txo qis qhov nthuav dav, nws raug nquahu kom ua qhov tseem ceeb ntawm cov txheej nyias nyias nrog cov tawv tawv siab dua li cov substrate (thickness 0.05 ~ 0.13mm). Thib ob, compression daim kab xev los yog cushioning pads uas nqus luam ntawv siab tuaj yeem siv los ua kom ruaj ntseg ntawm cov ntawv luam ntawv, uas tseem pab tswj cov dot nthuav dav.

03

Ink viscosity

Ink viscosity kuj tseem muaj feem cuam tshuam rau cov dot expansion. Nws paub zoo tias tus number case siab -viscosity diffuses qeeb dua li qis-viscosity number case thiab tsis tshua muaj dej ua ntej ziab. Thaum siv tus number case nrog qis viscosity rau flexographic luam ntawv, tus number case feem ntau diffuses los yog ntws ua ntej ziab tom qab hloov mus rau lub substrate, ua rau cov dot o. Yog li ntawd, ua kom tus number case viscosity ntawm flexographic luam ntawv nyob rau hauv ib tug tsim nyog ntau yam kuj yog ib qho tseem ceeb ntawm kev tiv thaiv dot expansion.

04

Cov khoom siv substrate

Cov khoom nto ntawm lub substrate ncaj qha cuam tshuam rau cov nyhuv ntawm cov ntawv luam tawm. Smooth tsis yog-absorbent films thiab coated cov ntaub ntawv feem ntau muaj ruaj khov number case adhesion, tsawg diffusion, thiab precisely tuav lub qub dot duab; Hloov pauv, cov ntaub ntawv hauv qab uas muaj zog nqus thiab qhov tsis sib xws, xws li cov ntawv tsis muaj coated thiab corrugated board linings, yuav nqus tus cwj mem zoo li wicks, ua rau tus number case diffuse raws cov kev taw qhia fiber ntau tshaj qhov xav tau cov duab thiab cov qauv ntau, ua rau cov duab loj dua.

Txawm hais tias dot o tshwm sim qee zaus hauv flexographic luam ntawv, nws cov qauv feem ntau zoo ib yam thiab kwv yees. Txhawm rau daws qhov teeb meem no, tam sim no prepress kho thev naus laus zis muab cov kev daws teeb meem hauv qab no:

(1) Professional software calibration: Cov duab ua thiab xim sib cais software tuaj yeem kho dot loj raws li cov ntawv xovxwm cov khoom nkag.

(2) Standardized testing: Printing factories feem ntau ua cov phaj kuaj thiab tshuaj ntsuam xyuas kom meej meej dot expansion parameters rau xim cais los yog designers.

(3) Kaw-loop calibration: Cov chaw teeb tsa ntawm cov xim- cov yeeb yaj kiab sib cais tau ua kom zoo dua qub thiab hloov kho raws li cov txiaj ntsig luam ntawv tiag tiag ntawm cov qauv ntsuas ntsuas.

(4) RIP: Siv calibration functions los ntawm cov khoom siv tshwj xeeb xws li RIP (Raster Image Processor), dot hloov tuaj yeem tswj tau ntau dua.

Flexographic luam ntawv thaiv phaj

Hauv kev luam ntawv flexographic, ua kom muaj siab - zoo dua qub ntawm qhov qub yog qhov yuav tsum tau ua. Txawm li cas los xij, hauv kev tsim khoom tiag tiag, ib qho teeb meem cuam tshuam rau kev luam ntawv zoo yog feem ntau ntsib - number case nyob rau ntawm ntug ntawm cov dots, hu ua flexographic phaj thaiv. Qhov tshwm sim no cuam tshuam rau qhov pom tseeb thiab pom tseeb ntawm cov duab luam tawm, ua rau poob qis hauv kev luam tawm.

Qhov thiaj li yog -hu ua flexographic printing blockage phenomenon tshwm sim thaum lub sij hawm flexographic luam ntawv qhov twg, rau ntau yam laj thawj, number case tsis tuaj yeem xa mus rau hauv cov substrate, ua rau cov number case los ntawm sab saum toj thiab lub xub pwg nyom ntawm cov dots. Thaum qhov kev sib txuam no nce mus txog ib theem, cov ntawv me me tuaj yeem ua qhov loj vim qhov hloov pauv ntawm tus lej ntau dhau, lossis ob peb lub dots tuaj yeem sib txuas ua ke tsis tu ncua, ua rau saum npoo ntawm cov khoom luam tawm tuaj qias neeg, cuam tshuam cov duab luam tawm zoo.

Qhov teeb meem no feem ntau tshwm sim nyob rau hauv qhov ntiav network cable seem, tshwj xeeb tshaj yog nyob rau hauv cov cheeb tsam tseem ceeb. Vim tias cov cheeb tsam tseem ceeb muaj cov xim sib dua, yog tias tus number case siab dhau lawm, nws yuav pom zoo heev. Qhov no yog qhov laj thawj tseem ceeb vim li cas cov cheeb tsam tseem ceeb yog qhov nyuaj rau kev ua haujlwm hauv flexographic luam ntawv.

01

Tus naj npawb ntawm cov kab mesh ntawm anilox cov menyuam tsis sib xws nrog cov kab ntawv luam ntawv

Qhov sib txawv tseem ceeb ntawm flexographic luam ntawv thiab lwm txoj kev luam ntawv yog nyob rau hauv cov menyuam anilox. Qhov sib piv ntawm cov kab ntawm cov menyuam anilox thiab cov kab ntawm cov ntawv luam ntawv yog qhov tseem ceeb rau kev ua kom zoo luam ntawv. Thaum cov dots nyob rau hauv qhov tseem ceeb ntawm lub phaj luam ntawv kov lub mesh qhov ntawm qhov screen qauv rau cov menyuam, lawv txoj kab uas hla yog me dua qhov qhib txoj kab uas hla ntawm lub qhov qhib. Yog li ntawd, cov dots poob rau hauv lub qhov thaum luam ntawv. Thaum cov dots thiab qhov sib cais, tsis yog tsuas yog saum npoo ntawm cov dots tab sis kuj cov cheeb tsam ib puag ncig yog coated nrog number case, hloov mus rau lub substrate, uas ua rau lub highlight cheeb tsam tau luam mus rau hauv ib tug loj cheeb tsam, tsim ib tug screen phenomenon.

Feem ntau ntawm cov teeb meem saum toj no tshwm sim hauv high -kab luam ntawv. Txoj hauv kev tseem ceeb los txhim kho qhov teeb meem no yog los xyuas kom meej tias lub qhov mesh qhov loj ntawm lub anilox cov menyuam yog me dua li txoj kab uas hla ntawm qhov me me ntawm cov ntawv luam ntawv.

02

Ntau tus cwj mem muab rau ntawm anilox roller

Lub anilox cov menyuam yog cov metering cov menyuam rau kev hloov tus cwj mem; hom anilox cov menyuam siv los txiav txim siab tus number case thov. Thaum lub anilox cov menyuam hloov cov number case ntau dhau, nws ua rau cov number case ntau dhau ntawm lub phaj luam ntawv. Yog tias tsis tswj xyuas kom zoo, tus cwj mem no tuaj yeem sib sau nyob ib ncig ntawm cov dots, tsim kom muaj kev pheej hmoo zais ntawm cov phaj.

Txoj kev kho yog yooj yim tab sis siv tau. Siv anilox rollers uas tuaj yeem hloov cov ntim me me tuaj yeem txo qhov teeb meem no, kom ntseeg tau tias tus lej ntawm tus lej nkag mus rau hauv lub phaj thiab thaum kawg ncav cuag lub substrate.

03

Tshaj luam ntawv siab

Yog tias tus number case siab dhau lawm, cov dots ntawm lub phaj luam ntawv yuav deform nyob rau hauv siab, ua rau ntau tus number case ua raws li cov dots thiab inevitably spill tawm sab nraud. Nyob rau ntawm lub sijhawm no, yog tias lub tshuab luam ntawv tsis zoo nce ntxiv, qhov tshwm sim ntawm kev txhaws yuav nce ntxiv. Kho qhov teeb tsa siab mus rau qib tsim nyog tuaj yeem tiv thaiv kom tsis txhob muaj tus lej ntau dhau, yog li txo tus lej tsim thiab ua kom muaj txiaj ntsig zoo - cov txiaj ntsig luam tawm zoo.

04

Tus number case muaj viscosity siab heev

Ink viscosity plays lub luag haujlwm tseem ceeb hauv qhov zoo ntawm flexographic luam ntawv. High number case viscosity cuam tshuam qhov zoo ntawm tus number case hloov, ua rau cov number case tsub zuj zuj ntawm cov dot. Kho tus number case viscosity mus rau qis dua thiab tsim nyog qib tuaj yeem txo qhov kev pheej hmoo ntawm tus number case ntau thiab txo qis qhov tshwm sim ntawm tus number case clogging.