Cov txheej txheem luam ntawv cuam tshuam rau qhov zoo ntawmluam ntawv tso quav tso quav rolls-los ntawm kev pom kev pom thiab kev nyab xeeb ntawm cov neeg siv mus rau kev ua haujlwm thiab kav ntev. Hauv qab no yog cov ncauj lus kom ntxaws txog cov ntsiab lus luam ntawv tseem ceeb thiab lawv cov teebmeem, haum rau cov ntawv thov kev lag luam thiab kev lag luam (xws li, cov ntawv tso quav tso rau hauv tsev so, cov ntawv tshaj tawm, lossis kev cai- cov khoom luam tawm hauv tsev):
Printing Technology Xaiv: Precision, Kev Pabcuam, thiab Kev Sib Raug Zoo
- Flexographic Printing (Feem ntau rau daim ntawv tso quav tso quav) - Cov txiaj ntsig ntawm Kev Ua Zoo: Siv cov paib hloov tau yooj yim thiab dej-raws li inks, zoo tagnrho rau siab - ceev ntau lawm (1,000+ rolls/min). Muab cov ntawv nyeem / lub logo thiab cov xim zoo ib yam yog tias cov ntawv sau tau zoo (300-600 dpi daws teeb meem). Kev sib raug zoo ntawm cov phaj tsis zoo lossis cov phaj hnav ua rau qhov muag plooj, kev sau npe tsis raug (xim hloov), lossis hloov tsis sib xws.
- Digital Printing (Inkjet / Thermal) - Cov txiaj ntsig ntawm Kev Ua Zoo: Ua rau ntawm - kev thov kev hloov kho (cov khoom me me, cov ntaub ntawv sib txawv xws li QR cov lej) nrog qhov tseeb siab (1,200+ dpi). Tshem tawm cov phaj teeb, txo cov khib nyiab thiab ua kom cov qauv tsim raug rau cov duab nyuaj. Txawm li cas los xij, tus cwj mem adhesion yuav tsis muaj zog ntawm daim ntawv nqus, ua rau smudging yog tias tsis kho kom zoo.
- Gravure Printing - Cov txiaj ntsig ntawm Kev Ua Zoo: Muab cov xim sib sib zog nqus, zoo nkauj thiab du gradients ntawm lub tog raj kheej engraved. Siv rau cov ntawv tso quav tso quav (xws li, cov tsev so khoom kim heev) tab sis muaj cov nqi teeb tsa ntau dua. Kev pheej hmoo ntawm ntau tshaj -inking, uas ua rau cov ntshav los ntshav lossis hloov mus rau tes / khaub ncaws.
Ink Properties: Safety, Adhesion, thiab Aesthetics
- Kev nyab xeeb & Ua raws cai - Tsis yog- tshuaj lom, zaub mov- qib inks (ua raws FDA 21 CFR Part 176, EU REACH, lossis ISO 15768) yog qhov yuav tsum tau ua. Cov tshuaj phem (piv txwv li, cov hlau hnyav, formaldehyde) lossis cov xim khaus khaus ua rau cov tawv nqaij ua xua lossis kis kab mob - tseem ceeb rau kev lag luam (tsev kho mob, tsev kawm ntawv, tsev so).
- Adhesion & Smudge Resistance - Dej-raws li los yog soy-raws li inks (vs. hnyav-raws li) yog nyiam rau cov ntaub ntawv tso quav tso quav. Cov adhesion tsis zoo ua rau cov kua nplaum hloov pauv (smudges ntawm tes, khaub ncaws, lossis qhov chaw) thaum ntub lossis txhuam. Kev kub kub (60-80 degree) thiab lub sij hawm ziab yuav tsum tau ua kom zoo kom tsis txhob muaj kuab los ntshav rau hauv cov ntawv fibers.
- Xim Fastness & Consistency - Xim stability nyob rau hauv cov av noo (chaw nyob ib puag ncig) thiab lub teeb (cia) ua kom lub hom phiaj sib xws. Fading lossis discoloration (piv txwv li, los ntawm UV raug) txo cov khoom pom muaj nqis. Batch-rau-batch xim variation (ΔE Tsawg dua los yog sib npaug rau 2) yog qhov tseem ceeb rau cov khw muag khoom lossis cov ntawv sau npe.
Daim ntawv Substrate Compatibility: Thickness, Absorbency, thiab Texture
- Qhov Nyhav & Thickness - Daim ntawv tso quav hnav (15–20 g / m²) yog qhov yooj yim rau tus number case nkag los yog tearing thaum luam ntawv (tshwj xeeb tshaj yog thaum muaj kev kub ceev). Cov yob hnyav dua (20-25 g / m²) muab cov cwj mem zoo dua tab sis yuav tsum tau hloov siab kom tsis txhob cuam tshuam cov ntawv muag muag.
- Absorbency - Cov ntawv uas nqus tau ntau heev (xws li, cov ntaub so ntswg rov siv dua nrog cov ntsiab lus lignin siab) tuaj yeem ua rau cov kua number case los ntshav lossis feathering (ntug ntawm cov ntawv nyeem / duab plooj). Coated los yog calendered daim ntawv tso quav tso quav (nqus nto) txhim kho tus cwj mem hloov tab sis tej zaum yuav txo tau softness - tshuav nyiaj li cas yog qhov tseem ceeb rau cov neeg siv kev paub.
- Kev ntxhib los mos - Daim ntawv tso quav tso quav (ntau rau cov khoom kim heev) yuav tsum tau luam ntawv sib haum nrog cov qauv embossed. Misalignment tsim ib tug disjointed pom kev tshwm sim, thaum lub sij hawm ntau siab thaum luam ntawv flattens embossments, txo tactile zoo.
Printing Parameters: Siab, ceev, thiab Alignment
- Kev Ruaj Ntseg - Lub siab ntau dhau ua rau daim ntawv (poob softness, kua muag tau yooj yim) los yog ua rau number case los ntshav; Lub siab me me dhau los ua rau tsis tiav tus lej hloov pauv (spotty designs). Anilox cov menyuam siab (rau flexo) yuav tsum tau ntsuas rau daim ntawv tuab (feem ntau 0.1-0.3 MPa).
- Kev ceev ntau lawm - Siab- luam ntawv ceev (ntau tshaj 1,200 rolls/min) ua rau muaj kev pheej hmoo ntawm kev sau npe tsis raug, smearing, lossis ntawv jams. Kev nrawm yuav tsum tau sib npaug rau lub sijhawm ziab khaub ncaws- nrawm nrawm dua yuav tsum tau nrawm dua- cov tshuaj tua kab mob (xws li UV- cov inks kho tau, txawm tias tsawg dua rau daim ntawv tso quav vim yog tus nqi).
- Alignment & Registration - Rau ntau- xim luam tawm, kev sib dhos meej ntawm txhua daim phaj xim (± 0.05mm) yog qhov tseem ceeb. Kev sau npe tsis raug (piv txwv li, cov ntawv liab hloov pauv los ntawm keeb kwm xiav) ua rau tsim tsis muaj kev tshaj lij thiab txo cov khoom lag luam kev ntseeg siab.
Ncej - Txheej Txheem Luam Ntawv: Kho, Slitting, thiab Rewinding
- Curing/Srying - Kev ziab tsis txaus ua rau cov kua nplaum smudging thaum slitting/rewinding. UV curing (ceev, tsis muaj kuab residue) los yog kub- huab cua kom qhuav (tus nqi- zoo rau cov dej- raws li inks) yuav tsum tau ua kom zoo kom tsis txhob muaj daim ntawv warping los yog brittleness.
- Slitting & Rewinding - Nthuav, huv si slitting hniav tiv thaiv fraying ntawm cov ntawv luam tawm (uas tuaj yeem ua rau tus number case tev tawm). Kev tswj nruj thaum rov rov qab (0.5–1.0 N / m) ua kom lub ntsej muag nruj zoo li qub- yob yob tuaj yeem hloov pauv thaum khaws cia, thaum dhau - yob nruj nreem kaw cov ntawv thiab smudge number case.
- Kev soj ntsuam zoo - Cov tshuab tsis pom kev tsis pom kev (kuaj xyuas kev sau npe tsis raug, smudges, tus cwj mem uas ploj lawm, lossis qhov tsis xws luag) txo cov nqi tsis raug. Kev ntsuas ntawm phau ntawv (1-2 rolls ib batch) txheeb xyuas cov xim sib xws thiab cov cwj mem adhesion (xws li, rub cov ntawv xeem nrog cov ntaub qhuav / ntub dej).
Environmental Factors: Humidity thiab Kub
- Cov av noo (45-60% RH): Cov av noo siab ua rau daim ntawv nqus dej noo, ua rau cov kua dej los ntshav; low humidity ua rau daim ntawv nkig thiab ua rau tearing. Ink viscosity kuj hloov nrog cov av noo-kho kom haum rau tus cwj mem thinning agents (xws li, dej rau flexo inks) yuav tsum tau.
- Kub (20-25 degree): Qhov kub thiab txias heev cuam tshuam rau lub sijhawm ziab thiab adhesion. Piv txwv li, qhov txias txias qeeb kho, ua rau muaj kev pheej hmoo smudging.
