Lithographic (litho) thiab flexographic (flexo) luam ntawv yog ob txoj kev luam ntawv sib txawv, txhua tus muaj nws tus kheej cov txiaj ntsig thiab kev siv. Nov yog qhov sib piv qhia txog lawv qhov sib txawv:
1. Txheej txheem luam ntawv:
Litho (Litho) Printing:
Txheej txheem:Lithography yog txheej txheem kev luam ntawv uas cov duab yuav tsum luam tawm yog nyob rau ntawm qhov chaw tiaj tus (feem ntau yog phaj hlau lossis phaj luam ntawv). Cov txheej txheem tso siab rau lub hauv paus ntsiab lus uas cov roj thiab dej tsis sib tov. Daim duab cheeb tsam ntawm lub phaj yog kho kom nyiam tus number case, thaum qhov tsis yog - daim duab cheeb tsam repels nws nrog dej. Ink yog pauv los ntawm lub phaj mus rau ib daim pam lub tog raj kheej thiab ces mus rau lub substrate.
Kev siv yam:Feem ntau yog siv rau siab -zoo luam ntawv ntawm cov ntawv thiab cov duab ntawm daim ntawv. Cov ntawv thov feem ntau suav nrog cov phau ntawv, cov ntawv xov xwm, cov ntawv qhia, thiab cov khoom ntim siab - kawg.
Flexographic (Flexo) luam ntawv:
Txheej txheem:Flexography yog txheej txheem luam ntawv nyem qhov twg cov duab tau tsa ntawm lub phaj hloov tau (feem ntau yog ua los ntawm roj hmab lossis photopolymer). Cov cheeb tsam tsa ntawm lub phaj tau txais tus cwj mem thiab xa ncaj qha mus rau lub substrate, uas tuaj yeem ua tau ntau yam khoom siv xws li yas, hlau, thiab ntawv.
Kev siv yam:Feem ntau siv rau ntim cov ntaub ntawv, suav nrog cov ntawv cim zaub mov thiab dej haus, ntim khoom siv tau yooj yim, cov thawv ntawv corrugated, thiab lwm yam ntaub ntawv uas yooj yim thiab kav ntev yog qhov tseem ceeb.
2. Plate Khoom:
Litho Printing:Siv cov ntawv hlau (feem ntau yog txhuas) lossis qee zaum daim hlau rau luam ntawv. Cov phaj yog tiaj thiab yuav tsum tau siv tshuaj kho mob nyuaj los npaj.
Flexo Printing:Siv cov phaj hloov tau ua los ntawm roj hmab lossis photopolymer. Cov phaj no yooj yim dua thiab raug nqi tsawg dua los tsim piv rau cov phaj lithographic thiab hloov tau ntau dua rau ntau hom substrates.
3. Ink Hom:
Litho Printing:Siv cov roj-raws li lossis dej-raws li inks, uas feem ntau muaj qhov zoo thiab tuaj yeem ua tiav cov ntsiab lus zoo thiab cov xim dav dav.
Flexo Printing:Feem ntau siv ceev- ziab, qis- viscosity inks, suav nrog dej-raws li, hnyav-raws li, thiab UV- inks curable. Cov inks no haum rau ntau hom substrates thiab feem ntau muaj lub sijhawm ziab sai dua.
4. Substrate Range:
Litho Printing:Qhov zoo tshaj plaws rau kev luam ntawv ntawm du, tiaj tiaj zoo li ntawv thiab duab los qhia. Nws tsis yog qhov zoo tshaj plaws rau kev luam ntawv ntawm qhov chaw hloov pauv lossis tsis xwm yeem.
Flexo Printing:Muaj ntau yam thiab tuaj yeem luam tawm ntawm ntau yam substrates, nrog rau cov ntaub ntawv hloov tau zoo li cov yeeb yaj kiab yas, foils, thiab txawm tias corrugated board. Nws yog qhov zoo tagnrho rau cov khoom ntim khoom uas xav tau kev hloov pauv thiab ua haujlwm ntev.
5. Print Quality:
Litho Printing:Paub txog nws lub siab - zoo, cov duab ntse nrog cov gradations du thiab zoo meej. Nws feem ntau nyiam rau siab - kev daws teeb meem thiab siab - cov haujlwm luam tawm zoo.
Flexo Printing:Thaum muaj peev xwm ua tau siab - cov ntawv luam tawm zoo, nws yuav tsis ua tiav tib theem ntawm kev nthuav dav li lithography. Txawm li cas los xij, kev nce qib hauv flexo thev naus laus zis tau txhim kho nws qhov zoo thiab sib xws.
6. Ceev thiab Ua Haujlwm:
Litho Printing:Feem ntau qeeb dua piv rau flexo luam ntawv, tshwj xeeb tshaj yog nyob rau hauv cov nqe lus ntawm kev teeb tsa thiab ua -lub sijhawm npaj. Nws yog qhov zoo dua rau kev khiav haujlwm ntev dua qhov zoo tshaj plaws.
Flexo Printing:Paub txog nws qhov siab - muaj peev xwm ceev thiab ua haujlwm tau zoo, ua rau nws zoo tagnrho rau kev ua haujlwm siab - ntim thiab ua haujlwm tas mus li. Nws yog feem ntau siv rau loj - nplai ntim thiab daim ntawv lo ntau lawm.
7. Tus nqi:
Litho Printing:Tus nqi pib pib tuaj yeem siab dua vim yog kev npaj cov phiaj xwm thiab lwm yam ua ntej- xovxwm ua haujlwm. Txawm li cas los xij, nws yog tus nqi - ua haujlwm tau ntev dua.
Flexo Printing:Feem ntau muaj cov nqi teeb tsa qis dua thiab tus nqi ntau dua - zoo rau kev khiav luv luv thiab ntim tau yooj yim. Cov phaj hloov tau tsis tshua kim los tsim dua lithographic daim hlau.
