Brumm, Pauline ; Sauer, Hans Martin ; Dörsam, Edgar (2023)
Scaling Behavior of Pattern Formation in the Flexographic Ink Splitting Process.
In: Colloids and Interfaces, 2019, 3 (1)
doi: 10.26083/tuprints-00015820
Artikel, Zweitveröffentlichung, Verlagsversion
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Kurzbeschreibung (Abstract)
We considered pattern formation, i.e. viscous fingering, in the ink splitting process between an elastic flexographic printing plate and the substrate. We observed an unexpected scaling behavior of the emerging pattern length scale (i.e., finger width) as a function of printing velocity, fluid viscosity, surface tension, and plate elasticity coefficients. Scaling exponents depended on the ratio of the capillary number of the fluid flow, and the elastocapillary number defined by plate elasticity and surface tension. The exponents significantly differed from rigid printing plates, which depend on the capillary number only. A dynamic model is proposed to predict the scaling exponents. The results indicate that flexo printing corresponded to a self-regulating dynamical equilibrium of viscous, capillary, and elastic forces. We argue that these forces stabilize the process conditions in a flexo printing unit over a wide range of printing velocities, ink viscosities, and mechanical process settings.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2023 |
| Autor(en): | Brumm, Pauline ; Sauer, Hans Martin ; Dörsam, Edgar |
| Art des Eintrags: | Zweitveröffentlichung |
| Titel: | Scaling Behavior of Pattern Formation in the Flexographic Ink Splitting Process |
| Sprache: | Englisch |
| Publikationsjahr: | 1 Dezember 2023 |
| Ort: | Darmstadt |
| Publikationsdatum der Erstveröffentlichung: | 2019 |
| Ort der Erstveröffentlichung: | Basel |
| Verlag: | MDPI |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Colloids and Interfaces |
| Jahrgang/Volume einer Zeitschrift: | 3 |
| (Heft-)Nummer: | 1 |
| Kollation: | 16 Seiten |
| DOI: | 10.26083/tuprints-00015820 |
| URL / URN: | https://tuprints.ulb.tu-darmstadt.de/15820 |
| Zugehörige Links: | |
| Herkunft: | Zweitveröffentlichung DeepGreen |
| Kurzbeschreibung (Abstract): | We considered pattern formation, i.e. viscous fingering, in the ink splitting process between an elastic flexographic printing plate and the substrate. We observed an unexpected scaling behavior of the emerging pattern length scale (i.e., finger width) as a function of printing velocity, fluid viscosity, surface tension, and plate elasticity coefficients. Scaling exponents depended on the ratio of the capillary number of the fluid flow, and the elastocapillary number defined by plate elasticity and surface tension. The exponents significantly differed from rigid printing plates, which depend on the capillary number only. A dynamic model is proposed to predict the scaling exponents. The results indicate that flexo printing corresponded to a self-regulating dynamical equilibrium of viscous, capillary, and elastic forces. We argue that these forces stabilize the process conditions in a flexo printing unit over a wide range of printing velocities, ink viscosities, and mechanical process settings. |
| Freie Schlagworte: | pattern formation, ink splitting, scaling laws, elastocapillarity, viscous fingering, flexography, Saffman-Taylor instability |
| Status: | Verlagsversion |
| URN: | urn:nbn:de:tuda-tuprints-158207 |
| Zusätzliche Informationen: | This article belongs to the Special Issue Colloids and Interfaces in Printing Technology |
| Sachgruppe der Dewey Dezimalklassifikatin (DDC): | 600 Technik, Medizin, angewandte Wissenschaften > 620 Ingenieurwissenschaften und Maschinenbau |
| Fachbereich(e)/-gebiet(e): | 16 Fachbereich Maschinenbau 16 Fachbereich Maschinenbau > Institut für Druckmaschinen und Druckverfahren (IDD) |
| Hinterlegungsdatum: | 01 Dez 2023 14:03 |
| Letzte Änderung: | 04 Dez 2023 12:30 |
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| Suche nach Titel in: | TUfind oder in Google |
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- Scaling Behavior of Pattern Formation in the Flexographic Ink Splitting Process. (deposited 01 Dez 2023 14:03) [Gegenwärtig angezeigt]
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