Dab tsi yog cov yam ntxwv ntawm inks rau offset luam ntawv?

1. Cov khoom xyaw tseem ceeb

2. Dej Kuj
3. Cov yam cuam tshuam rau cov teeb liab thiab cov hau kev los txhim kho nws

4.Key cov khoom siv thiab cov tswv yim txhim kho rau Adhesion

1. Cov khoom xyaw tseem ceeb
(1) pigments
Muaj nuj nqi: muab cov kua mem xim thiab zais lub hwj chim, muaj kev cuam tshuam ntawm lub yoj, thiab cuam tshuam ncaj qha rau cov number case tsis kam thiab tshuaj lom neeg tiv thaiv tus number case.
Hom: suav nrog inorganic pigments (xws li carbon dub) thiab cov organic pigments (xws li azo thiab phthalocyanine). Cov tom kawg yog xim zoo nkauj thiab muaj cov xim muaj zog, maj mam hloov cov pigacanic pigments los ua lub ntsiab.
(2) binders
Muaj nuj nqi: raws li cov xim muaj zog, nws tsim cov yeeb yaj kiab ink thiab kho nws ntawm cov khoom tseem ceeb ntawm cov number cas, xws li fluce, viscosity, thiab ziab.
Kev sib xyaw: cov inks niaj hnub yog feem ntau raws li cov resthetic resins (xws li ziab cov roj av (xws li roj ntxhia) lossis cov roj av ntxhia lossis ua rau cov roj.

2. Ntu Cov Khoom xyaw
(1) fillers
Muaj nuj nqi: kho lub viscosity thiab fellity ntawm tus number case thiab txo cov nqi. Dawb los yog pob tshab (xws li calcium carbonate thiab barium sulfate) feem ntau siv.
(2) additives
Muaj nuj nqi: txhim kho kev luam tawm txav ntawm cov inks, piv txwv li:
DesicCant: nrawm oxidatation polymerization kev tawm tsam (xws li Cobalt thiab cov ntsev mangalral).
Anti-adhesive: tiv thaiv cov khoom luam tawm los ntawm kev qias neeg.
Anti-emulsifier: Txhim kho cov inks thiab zam emulsification tshwm sim los ntawm kev sib xyaw ntawm cov ciav dej thaum lub tshuab luam ntawv.

3. Kev Tshawb Fawb ntawm Niaj Hnub Ua Haujlwm
Kev tiv thaiv ib puag ncig ib puag ncig: kev hloov roj hluavtaws yooj yim, thaum muaj cov innksboric-based inks (muaj cov ntaub ntawv sau cia (muaj cov ntaub ntawv sau cia) tau nce qib kom txo cov pa hluav taws xob.
Muaj kev nthuav dav: Tsim cov inn tshwj xeeb rau kev sib txawv (xws li cov plastics thiab hlau). Piv txwv li, UV inks xav tau kev sib ntxiv ntawm cov duab photoinitiators kom ua tiav cov tshuaj sai.

2. Dej Kuj

1. Kev txhais thiab tseem ceeb ntawm dej tsis kam
Cov dej tsis kam ntawm offset luam ntawv luam ntawv yog hais txog nws lub peev xwm los tswj cov xim ruaj khov, tsis-emulsification thiab muaj zog adhesion thaum raug dej los yog av noo ib puag ncig. Txij li cov txheej txheem luam tawm kev siv tau yuav tsum siv cov ntsuas dej (cov number case yuav tsum tawm tsam cov khoom nkag mus, tsis muaj txheej txheem kev ua tsis tiav lossis emulsification tsis ua hauj lwm.

2. Dej Kuj Ntsuas Txoj Kev
(1) Cov Qauv Immersion Immersion (1) Cov ntawv luam tawm hauv dej thiab saib seb puas muaj cov kav dej txheej tawm, ploj mus, thiab sau lub sijhawm thiab kev hloov pauv.
(2) lim ntawv nias Txoj Kev: Npog ntawm cov khoom luam tawm nrog cov ntawv xim ntub dej, thiab ntsuas tus cwj mem tsis kam rau cov dej nkag mus.
(3) Kev Sai sai sai: Tshawb xyuas cov dej ntev ntev ntawm cov kua mem los ntawm kev sim ua kom muaj cov dej noo ib puag ncig lossis dej khov dej vapor raug.

3. Qhov tseem ceeb yam cuam tshuam rau cov dej tsis kam
(1) Binder Hom

Cov Khoom Hluav Taws Xob (xws li Phenolic Resins thiab Alkyd Resins) muaj cov dej muaj zog tsis kam thiab ua yeeb yaj kiab cov roj (xws li cov roj hauv qab), txo cov dej nkag mus.
Ib puag ncig phooj ywg siyybean based binders yog hloov kho kom txo voc emissions thaum noj mus rau hauv cov dej tsis kam.
(2) demulsifiers thiab additives

Ntxiv cov demulsifiers tuaj yeem tiv thaiv kev sib xyaw ntawm cov ciav dej thiab number case thiab number case ntawm number case ntawm number case, thiab tiv thaiv kev lag luam tsis taus los ntawm emulsification.
Desiccant (xws li cobalt salts) accelerates oxidation falfing txheej txheem, shortens lub numkaub lub sij hawm kho lub sijhawm.
(3) pigments thiab fillers

Inorganic pigments (xws li carbon dub) yog cov dej ntws ntau dua cov pigic pigments, tab sis cov dej ntws los ntawm kev kho mob saum npoo (xws li cov txheej txheem silicon).
Fillers (xws li calcium carbonate) kho cov kua member. Kev siv ntau dhau yuav txo qhov ntom ntom ntawm cov kav dej thiab cuam tshuam cov dej tsis kam.

4. Kev taw qhia txog kev txhim kho cov dej tsis kam
(1) cov kua mis ua kom zoo dua: Siv cov resins dej ntau (xws li UV kho cov resins (thiab ntxiv nano-nplai cov khoom siv dej ua ntxiv kom txhim kho cov kav dej txheej.
(2) Kev Tswj Xyuas:
Tswj tus nqi PHF ntawm lub pas dej daws (feem ntau 4. 5-5}. 5) kom tsis txhob muaj acidity heev uas ua rau muaj kev puas tsuaj rau tus qauv ink.
Siv infrared qhuav lossisUV KhoTechnology tom qab luam ntawv kom nrawm ua ntej cov mem kua mem duab thiab txo cov dej yaig.

5. Kev Lag Luam Cov Qauv thiab Cov Lus Qhia Tshwj Xeeb
ISO 2836: 1974: Qhia meej txog txoj kev rau cov dej tsis kam ntawm cov khoom luam tawm, suav nrog kev siv tshuaj txhuam, txhuam thiab lwm yam kev sim tshuaj.
Qb / t 2826-2017: Cov kev ua kom pom tseeb rau cov ntsuas kev ua haujlwm xws li dej tsis kam thiab kev daws teeb meem tiv thaiv ntawmUV offset inks.

1. Cov yam cuam tshuam rau cov teeb liab thiab cov hau kev los txhim kho nws

Ink Zaj Duab Xis Thickness Thiab Binder Zog
Lub thickness ntawm tus number case zaj duab xis ncaj qha cuam tshuam rau cov gloss. Ib daim ntawv qhia hauv cov tuab tuab tuaj yeem khaws ntau dua cov ciaj sia thiab txo cov roughness ntawm daim ntawv tom qab nqus. Cov Khoom Hluav Taws Xob (xws li Phenolic Resins thiab Alkyd Resins) raws li cov duab dej muaj ntau dua li cov roj av roj, uas tuaj yeem txhim kho cov kab uas zoo siab.

Kom qhuav thiab txheej txheem tswj
Kev ziab khaub ncaws nrawm nrawm (xws li UV kho lossis infrared kom qhuav) tuaj yeem txo cov dej yaig thiab number txheej nkag mus, ua ib qho kev nkag mus, ua ib qho kev nkag siab du. Nyob rau tib lub sijhawm, tswj hwm tus nqi PHH ntawm lub pas dej daws teeb meem (4. {} Tuaj yeem tiv thaiv cov qauv hauv Ink, yog li tswj hwm tus yam ntxwv.

Xaiv cov neeg sawv cev
Ntxiv cov tshuaj fluorocarbon tuaj yeem tiv thaiv cov kua mem kua los ntawm peeling lossis wrinkling, thaum twg pastee tuaj yeem txhim kho cov cwj pwm ntawm tus cwj pwm. Txawm li cas los xij, kev siv ntau dhau ntawm cov neeg sawv cev los tiv thaiv kev sawv cev thiab lwm tus neeg sawv cev uas cuam tshuam rau cov ntsiab.

Binder thiab xim kho mob

 

Binder thiab xim kho mob
Cov Khoom Siv Hluav Taws Xob Hluav Taws Xob Tsis yog muaj cov zoo nkauj zoo nkauj, tab sis kuj txhim kho cov tshuaj lom neeg nrog rau substrates. Inorganic pigments (xws li carbon dub) muaj cov khoom nplaum zoo dua cov organic pigments, tab sis tom kawg tuaj yeem txhim kho los ntawm kev kho deg xws li Silicon Txheej.

Nto Kho Tshuab
Siv cov ntshav tu tshuab los kho cov npoo av tuaj yeem tshem cov kuab paug thiab ua kom zoo dua txoj kev ua kom zoo nkauj, ua kom zoo dua qub cov kua txob.

Ink Tsim Thiab Cov Txheej Txheem Kom Qhuav
Ntxiv cov ntawv sau tseg (xws li cov ntsev ua kom sai) acceleration oxidation zaj duab xis, luv luv dej sawv ntxov lub sij hawm hu, thiab indhectly txhim kho adchesion. UV-Curable Inks daim ntawv ua ib txheej mem dej txheej los ntawm kev sib txuas nrawm, thiab muaj cov nplaum zoo dua li cov mem kua num tsoos