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Presentations 2015, 2016

iarigai Toronto 2016
iarigai, VIGC, IS&T at drupa 2016

iarigai VIGC, Brussels
Evolutions in food packaging printing

You are here: Conferences & Events * 2009 Stockholm * Abstracts * 3. Printing and print quality

3. Printing and print quality

3.10. Estimation of rubber ink transfer effectivity in flexography on the basis of laboratory studies

Marie Kaplanova, Jiri Hejduk, Ondrej Panak

Abstract
The goal of this work was to understand how the surface properties of rubber sleeves (particularly the surface tension) affect ink spreading, ink splitting and ink transfer in flexography printing processes.
A set of EPDM (ethylene-propylene-diene terpolymer) rubber sleeves, differing in composition and surface treatment, was used for the study. Its focus was to demonstrate the influence of the surface properties of rubber solids and ink composition (solvent- and water-based flexograhpy inks) on the ink transfer efficiency on different printing materials (polyethylene and paper). The results of laboratory nonimpact ink transfer experiments were compared with laboratory printing results.

Keywords: Flexography, Rubber sleeves, Ink transfer, Surface tension, EPDM
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3.11. Research of interaction on the border polymer film - ink

Evgeny Bablyuk, Konstantin Farenbrukh

Abstract
The article demonstrates the experimental results on feasibility study of the normal fracture method for a quantitative evaluation of adhesive strength on the interface “polymer film—ink”. Evaluation of the adhesive strength level has been made for water-based and solvent-based inks spread on PP, PE and PET films surface.

Keywords: Adhesive strength, Polymer films, Printing inks
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3.12. Penetration of microscopic drops into paper structures

Martin Dube, Francois Drolet, Claude Daneault, Patrice Mangin

Abstract
We develop a model describing the penetration of small fluid droplets inside the three-dimensional structure of paper. We numerically solve the Navier-Stokes equations governing fluid motion and discuss how paper structure influences the penetration and distribution of fluid inside the sheet. We consider small droplets and discuss our results in light of ink-jet printing applications. Our results show that paper density influences greatly ink coverage but that ink penetration is mostly dependent on the available fiber surface, a quantity not directly related to density.

Keywords: Capillary pressure, Paper structure, Inkjet printing
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