Flexographic multilayering of conventional latex-based dispersion coatings containing small dose of silica nanoparticles: Runnability on a pilot scale and barrier performance
2023 (English) In: TAPPICon 2023 - "Rock the Roll: Unleashing the Harmonies of the Paper Industry", TAPPI Press, 2023Conference paper, Published paper (Refereed)
Abstract [en]
Adding functionality to packaging materials is a key element to designing innovative packaging solutions. The ability to apply functional coatings to packaging materials is a key element to increasing their performance and creating innovative packaging solutions. Flexography, a cost-effective printing method commonly used to print information and graphics directly onto a wide variety of packaging substrates, show good potential for applying functional coatings. In this study, conventional clay-latex coating formulations containing approx. 1.3% silica nanoparticles was applied on a linerboard using a pilot flexographic printing web press. The performance of multilayered silica-based coatings was compared with conventional coatings containing talc and/or wax dispersion in terms of runnability and barrier performance. Coating grammage increased with increasing number of coating layers and a significant decrease in both the water vapor transport rate (WVTR) and the direct water uptake of water (Cobb120 wettability test) is observed for coatings containing silica particle. In general, silica-based coatings performed slightly better than talc-based coatings. Talc/wax-based coatings had the highest variation in surface roughness due to uneven distribution and variations of coating layers.
Place, publisher, year, edition, pages TAPPI Press, 2023.
Keywords [en]
Cost effectiveness, Dispersions, Protective coatings, Silica nanoparticles, Surface roughness, Talc, Barrier, Barrier performance, Cobb, Dispersion coatings, Flexography, Key elements, Nano Silica, Runnability, Silica nanoparticles, Water-vapour transport rates, Packaging materials
National Category
Paper, Pulp and Fiber Technology
Research subject Chemical Engineering
Identifiers URN: urn:nbn:se:kau:diva-97561 Scopus ID: 2-s2.0-85175857997 ISBN: 9781713877707 (print) OAI: oai:DiVA.org:kau-97561 DiVA, id: diva2:1815286
Conference TAPPICon 2023 - Rock the Roll: Unleashing the Harmonies of the Paper Industry,Cleveland, United States of America, April 28-May 1, 2023.
2023-11-282023-11-282023-11-28 Bibliographically approved