Feasibility of atomic layer deposited Al2O3 barrier layers onto temperature-sensitive packaging materials

Terhi Hirvikorpi, Jari Vartiainen, Minna Vikman, Mika Vähä-Nissi, Jenni Sievänen, Erkki Salo, Tuomas Mustonen, Ali Harlin

Research output: Chapter in Book/Report/Conference proceedingChapter or book articleProfessional

Abstract

Thin Al2O3 coatings were deposited at low temperatures of 80 or 100°C on various polymercoated boards and plain polymer fi lms using the atomic layer deposition (ALD) technique. The work demonstrated that such ALD-grown Al2O3 coatings signifi cantly enhance the barrier performance against oxygen and water vapour. Even extremely thin (25 nm) barrier coatings of Al2O3 could be suitable barrier layers for dry food and pharmaceutical packages made from temperature-sensitive fi bre-based materials. It was also demonstrated that these coatings may have relatively high seal strengths when sealed against LDPE coatings or themselves. In addition, ALD-grown Al2O3 coating did not significantly reduce the degradability of biopolymercoated boards in composting conditions.
Original languageEnglish
Title of host publicationIndustrial biomaterials
Subtitle of host publicationResearch highlights
PublisherVTT Technical Research Centre of Finland
Pages67 - 71
Publication statusPublished - 2011
MoE publication typeD2 Article in professional manuals or guides or professional information systems or text book material

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    Hirvikorpi, T., Vartiainen, J., Vikman, M., Vähä-Nissi, M., Sievänen, J., Salo, E., Mustonen, T., & Harlin, A. (2011). Feasibility of atomic layer deposited Al2O3 barrier layers onto temperature-sensitive packaging materials. In Industrial biomaterials: Research highlights (pp. 67 - 71). VTT Technical Research Centre of Finland. https://www.vtt.fi/files/download/scientific_reports/IndBioMat_2011_www.pdf