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Journal articles
Open Access
Pre-damping effects on water absorption and drying dynamics in flexographic printing, TAPPI Journal November 2025

ABSTRACT: Optimizing flexographic printability can involve the ink and the substrate, as well as the printing process. It has been widely reported in the literature that controlling topography of the substrate and its porosity are vital for good flexographic printability, especially when using water-based inks. This study focuses on how pre-damping a surface impacts liquid absorption and improves wet trapping (ink on ink with no intermediate drying) in flexographic printing. A Prüfbau universal print tester was adapted to analyze flexographic wet-on-wet ink printing and trapping using yellow and magenta inks for contrast. Slow drying of the first ink layer (yellow) leads to mottle when the second layer (magenta) is applied. The study explores the “wet sponge” hypothesis: a pre-damped surface should absorb liquid faster. The Lucas- Washburn equation describes long-term absorption, but it does not capture short-term uptake, which instead follows a linear dependence on time.

Journal articles
Open Access
Guest Editorial: Carrying forward the tradition of fundamental research, TAPPI Journal June 2026

Since its first symposium in 1957, the Fundamental Research Symposium has evolved around fundamental research themes aimed at scientifically understanding papermaking. The symposium is organized by the Fundamental Research Committee (FRC), which is operated by the Fundamental Research Society (FRS). The unique format of the symposium, held at universities such as Oxford and Cambridge where participants stay together, fosters intensive academic exchange and collegial interaction.

Journal articles
Open Access
Editorial: Advancing the Digital Twin paradigm — From network mechanics to functional paper physics, TAPPI Journal March 2026

This Special Paper Physics Issue of TAPPI Journal serves as a critical bridge between the phenomenological observations shared at the last International Paper Physics Conference in Wuppertal, Germany, and the rigorous quantification required to realize the “Digital Twin” paradigm. This paradigm involves the creation of a virtual dynamic representation of a process that acts as a real-time counterpart of the actual one. We are particularly indebted to Jaan-Willem Simon of the University of Wuppertal, whose leadership was pivotal in translating the conference’s academic rigor into this scholarly collection.

Journal articles
Open Access
Selecting extrusion technology for linear low-density polyethylene film, TAPPI Journal, September 1988 88SEP129

Selecting extrusion technology for linear low-density polyethylene film, TAPPI JOURNAL September 1988

Journal articles
Open Access
Techniques for package printing and design, September 1988, TAPPI Journal 88SEP137

Techniques for package printing and design, TAPPI JOURNAL September 1988

Journal articles
Open Access
Thermoplastic composites- products and applications, September 1988, TAPPI Journal 88SEP145

Thermoplastic composites-products and applications, TAPPI JOURNAL September 1988

Journal articles
Open Access
Cross-Machine variation of paper curl on a twin-wire machine, September 1988, TAPPI Journal 88SEP165

Cross-machine variation of paper curl on a twin-wire machine, TAPPI JOURNAL September 1988

Journal articles
Open Access
Press Drying, The Hydra-Nip Dryer: the easy way to surface smoothness, September 1998 TAPPI Journal, 88SEP73

The Hydra-Nip dryer: the easy way to surface smoothness, TAPPI JOURNAL September 1988

Journal articles
Open Access
The effects of chip blending of Pinus radiata kraft pulp, September 1988 TAPPI Journal 88SEP89

The effect of chip blending on Pinus radiata kraft pulp, TAPPI JOURNAL September 1988

Journal articles
Open Access
Dryer Fabrics Cleaning: a way to reduce steam consumption and improve sheet quality, September 1988, TAPPI Journal 88SEP97

Dryer fabric cleaning: a way to reduce steam consumption and improve sheet quality, TAPPI JOURNAL September 1988

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