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Journal articles
Local delamination in pharmaceutical blister packages • A thermomechanical theory on buckling of heat-sealed composite laminates in flexible packaging, TAPPI Journal July 2025
ABSTRACT: Pharmaceutical blister packages consist of cavities made from a thick polymeric form foil and a thin aluminum lid foil. Heat-sealing technology is usually used to bond the lid foil to the form foil. Occasionally, the sealed area shows buckling defects of the lid foil, which allow contamination to enter into the cavity. A contaminated product is a worst-case scenario for pharmaceutical production and must be avoided. We discuss a thermomechanical theory on buckling defects in blister packages and derive strategies to avoid these. The theory is based on the assumption that the seal of a blister packaging behaves like a laminate of thin composite layers under compressive load. Literature research on buckling of thin laminated films, thermal behavior of polymers, and seal strength of heat-sealed polymers provides the technical and physical background to elaborate the theory. The theory comprises three elements: an initial condition regarding thermal load and precedent defects; a buckling condition; and a crack propagation condition. The plausibility of the theory is verified using model calculations and heat-seal tests. The paper concludes with strategies against buckling of heat-sealed lid foils and an outlook on other applications in laminating and coating of polymer films.
Journal articles
Editorial: Special issue on Paper Physics highlights continued focus on packaging, TAPPI Journal August 2025
ABSTRACT: It is a great pleasure to present this special issue of TAPPI Journal, featuring papers from the 2024 International Paper Physics Conference (IPPC) that have been peer-reviewed for publication in this journal. The conference was held in Wuppertal, Germany, from September 30 to October 2, 2024. This IPPC series is one component of the annual meeting of the International Paper Physics Committee and community, complementing the Fundamental Research Symposia established in 1957 — and the Progress in Paper Physics meetings.
Journal articles
Toward environmental resilience in pulp and paper manufacturing: Water consumption and carbon dioxide emission reductions, TAPPI Journal September 2025
ABSTRACT: Pulp and paper manufacturing is a water- and energy-intensive industrial sector, necessitating improvement of its operational efficiency, as well as reduction of emissions to the maximum extent possible. This review focuses on the reduction of water consumption and carbon dioxide (CO2) emissions that originate in the pulp and paper industry (PPI). First, process simulation and optimization techniques used for water consumption reduction are reviewed. Then, techno-economic analyses of solvent-based CO2 capture from PPI are discussed. Additionally, key actions are proposed for enhancing water consumption reduction and CO2 capture in PPI.
Journal articles
19th European PLACE Conference highlights challenges of balancing sustainability with product protection, TAPPI Journal July 2025
ABSTRACT: The European PLACE (Polymers, Laminates, Adhesives, Coatings and Extrusion) Committee was founded in 2023 with the goal of continuing a biennial conference for the flexible packaging and converting industry, including converters, OEMs, raw materials suppliers, and academia. Previous iterations of the PLACE Conference were organized by TAPPI, but the new European Place Committee has now found a home within bdvi e.V. (Bund Deutscher Verpackungsingenieure), which is the Association of German Packaging Engineers, a registered nonprofit organization.
Books
Black Liquor Evaporation Now Available from TAPPI Press
Explores the science, technology, and practice of successfully concentrating black liquor from weak liquor to firing concentrations
TAPPI News
Riddle Me This!
Riddle Me This! Riddle Me This! What do the year 1934, Audio Oscillators, a “Mickey Mouse” type company, a coin toss and $530 have in common with a very well-known 76 year old company that employs
TAPPI News
What a whirlwind in September and October 2016 Volume 2
What a whirlwind in September and October 2016 Volume 2 I have seen the Future My travels continued with an invitation to meet in and tour Miron Construction Co., Inc.’s corporate headquarters in
News
TAPPI News
New TAPPI Board of Directors and Officers Announced
New Board Members include representatives from Essity, Voith Paper North America, University of Wisconsin-Stephens Point, and former president of Cascades Group
eLearning
TAPPI News
TAPPI Academy Announces Addition of Web and Winding Courses to eLearning Offerings
Web handling and converting expert Dr. David Roisum’s popular courses are now available from TAPPI in an eLearning format
TAPPI News
All About Axchem
All About Axchem Booth 703 at PaperCon2016. Sounds less than exciting doesn’t it? Unless you happen to stop by to see what in the world TAPPI’s Newest Sustaining Member Company is all about. I am