Dab tsi yog Qhov Tseem Ceeb Ua Haujlwm Ntawm Lub Tshuab Luam Ntawv Gravure? Dab tsi yog Qhov Tseem Ceeb Qhov txawv ntawm Nws Thiab Flexographic lossis Offset Printing?

Lub hauv paus ntsiab lus ntawm kev ua haujlwm ntawm gravure printing yog raws li "gravure number case cia thiab siab hloov" lub cev mechanism.
I. Txoj Cai Ua Haujlwm ntawm Gravure Printing
** Editing theem:** Cov kab nrib pleb sib txawv yog tsim nyob rau saum npoo ntawm cov hlau luam ntawv cov menyuam (xws li, tooj liab, hlau) los ntawm cov tshuaj etching, hluav taws xob etching, lossis laser engraving. Lub crater yog tib yam duab thiab qauv nthuav dav. Piv txwv li, cov qauv pits yog qhov tob dua thiab cov qauv zoo nkauj yog qhov ntiav. Qhov loj ntawm tus number case nyob ntawm qhov tob ntawm lub qhov.
Ink thiab khawb
** Ink:** Dip lub tshuab luam ntawv rau hauv qhov zawj lossis inkjet los sau nws nrog number case.
Scratch: Lub siab - tus kws kho mob cov hniav (xws li hlau los yog ceramic) uas txhuam tus number case ntau dhau los ntawm lub tshuab luam ntawv ntawm lub kaum sab xis thiab siab, tawm hauv tus number case rau hauv qhov zawj los tsim cov duab meej meej.
Impression Transfer: substrate (xws li yas zaj duab xis, ntawv, aluminium ntawv ci, thiab lwm yam) los ntawm lub tshuab luam ntawv nyob rau hauv kev sib cuag nrog lub impression roller. Nyob rau hauv lub siab, tus number case nyob rau hauv lub zawj yog pauv mus rau saum npoo ntawm substrate kom tiav cov txheej txheem luam ntawv. Kev ziab thiab kho: Nyob ntawm seb hom number case (hloov, dej-raws li, UV), number case dries sai sai los ntawm cov cua kub ncig, cua sov infrared lossis UV raug los tiv thaiv adhesion lossis staining.
ii. Qhov sib txawv ntawm gravure, flexo thiab offset printing
1.Plate Structure thiab Ink Transfer Method
Gravure luam ntawv:
Printing phaj: Hlau rollers; duab cheeb tsam concave, tsis yog - duab cheeb tsam convex.
Ink Transfer: Ink tsuas yog khaws cia rau hauv qhov zawj, nyob rau hauv siab ncaj qha mus rau lub substrate, number case txheej yog tuab (feem ntau 3-10 microns), uas ua rau muaj xim saturation.
Nta: Tsawg tus nqi luam ntawv, tab sis hnav thiab tshuaj tiv thaiv corrosion, haum rau ntev - khiav luam ntawv (xws li, ntim khoom noj, ntawv luam yeeb).
Flexographic luam ntawv:
Printing phaj: Flexible resin phaj (xws li roj hmab los yog photosensitive polymer); thaj tsam duab elevated, tsis yog - cheeb tsam duab dented.
Hloov Ink: Ink yog pauv ntau npaum li cas los ntawm anilox cov menyuam mus rau lub phaj thiab tom qab ntawd los ntawm thaj chaw tsa mus rau lub substrate. Cov txheej number case yog nyias nyias (1-3 microns), haum rau kev luam ntawv luv luv. Nta: Tsawg tus nqi ntawm phaj ua, hloov phaj ceev, tab sis luam ntawv raug thiab ua haujlwm tau qis dua li gravure luam ntawv. Feem ntau siv rau hauv corrugated box thiab daim ntawv lo luam ntawv.
Offset
Phaj: coated nrog photosensitive resin ntawm ib tug hlau aluminium substrate. Cov duab cheeb tsam yog hydrophilic thiab tsis yog - thaj tsam duab yog hydrophilic.
Kev hloov tus cwj mem: los ntawm daim pam rau kev hloov pauv tsis ncaj, tus cwj mem ua ntej los ntawm daim ntawv luam ntawv mus rau daim pam, thiab tom qab ntawd los ntawm daim pam mus rau substrate. Lub thickness ntawm tus number case txheej thickness yog nruab nrab ntawm gravure thiab flexographic printing.
Nta: Cov kev daws teeb meem siab (200 kab / nti), haum rau ntau- xim luam ntawv (cov ntawv xov xwm, cov ntawv tshaj tawm, thiab lwm yam), tab sis yuav tsum muaj kev tswj hwm tus lej lej thiab cov cuab yeej ntse.
2. Printing siab thiab Substrate Adaptability
Gravure luam ntawv
Siab: impression roller nyob rau hauv lub phaj cov menyuam siv lub siab ntau (feem ntau 5-10 kg / cm2) kom paub tseeb tias tus number case hauv qhov zawj.
Substrates: haum rau yas, aluminium ntawv ci thiab lwm yam ntaub ntawv mos. Daim ntawv kuj tuaj yeem luam tawm, tab sis yuav tsum muaj cov tuab tuab heev.
Flexographic luam ntawv
Siab: Tsis tshua muaj siab (1-3 kg / cm2), number case ntim tswj los ntawm anilox cov menyuam kom txo cov substrate deformation.
Substrates: Hloov tau, muaj peev xwm luam tawm ntawm cov khoom sib txawv (xws li ntawv corrugated, tus kheej -cov ntawv nplaum), txawm tias nkhaus lossis tsis zoo li qhov chaw.
Offset
Siab: Nruab nrab siab (3-5 kg ​​/ cm2), cushioned los ntawm ib daim pam kom txo kev cuam tshuam ntawm substrate.
Substrates: Feem ntau yog siv rau daim ntawv, tshwj xeeb tshaj yog du, tiaj coated los yog offset ntawv; rhiab heev rau cov khoom thickness thiab nto roughness.
3. Tus nqi -kev sib piv
Gravure luam ntawv
Editing nqi: Siab (engraving hlau rollers yuav tsum tau, lub voj voog ntev), tab sis ntev lifespan ntawm veneer (million prints).
Kev luam ntawv ceev: siab- qauv ceev tuaj yeem ncav cuag li ntawm 400m thiab 60m / min, haum rau ntau lawm.
Kev cuam tshuam ib puag ncig: Volatile organic compounds (VOCs) emissions from Solvent-raws li inks yog siab, yuav tsum muaj cov khoom siv pov tseg pov tseg; dej-raws li thiab UV inks tau nrov zuj zus.
Flexographic luam ntawv
Cov nqi xaws yog Tsawg (cov phaj flexographic tau tsim sai thiab nrog lub voj voog luv), tab sis ib daim hlau muaj lub neej luv luv (kwv yees li 500,000 txog 1 lab luam).
Printing ceev: nruab nrab mus rau kev kub ceev (150-300 m / min), haum rau luv luv mus rau nruab nrab lub sij hawm txiav txim.
Kev tiv thaiv ib puag ncig: Dej number case dav siv, tsawg VOC emissions, raws li txoj kev loj hlob ntawm ntsuab luam ntawv.
Offset
Cov nqi luam ntawv: Nruab nrab (CTP luam thev naus laus zis txo cov nqi, tab sis ntau xim luam ntawv yuav tsum muaj ntau daim ntawv luam).
Printing ceev: Nruab nrab ceev (8,000-15,000 luam ib teev) rau ntau-xim, high-precision printing.
Kev tiv thaiv ib puag ncig: yuav tsum tau tswj tus lej sib npaug kom txo tau cov kab mob sib kis; UV offset luam ntawv tso cai rau kom qhuav tam sim ntawd, txo kev siv zog.
III. Abstract: Core sib txawv ntawm peb
Gravure Printing: mus rau ``gravure number case cia "raws li qhov chaw, hais txog tus number case thickness thiab xim saturation, haum rau ntev - siv lub sij hawm, siab durability yuav tsum. Flexographic luam ntawv: tsom rau yooj yooj yim thiab tsis tshua muaj nqi, Flexo + anilox rollers yog haum rau luv luv -khiav ib puag ncig daim ntaub ntawv.
Offset luam ntawv: rau "kev hloov pauv tsis ncaj + tus lej sib npaug" raws li lub hauv paus, hais txog kev daws teeb meem thiab kev sau npe raug, haum rau ntau -xim, siab -precision printing.