Johan Alfthan is a senior research associate in the paper mechanics and packaging area at RISE, division Bioeconomy and health. Currently he mainly works with corrugated board, both on the mechanical behaviour of the constituent liners and flutings (elastic-plastic behaviour, creep behaviour, damage mechanics) and on the structural mechanics of the corrugated board and packaging (converting processes, warp, package performance, mathematical modelling). This work is to a large extent performed within the RISE Bioeconomy research programme (where he also has a role as technical and scientific leader), and within SUW (The International Development Group of Corrugated Board).
He has also worked on paperboard (mechanical behaviour of the materials and structural mechanics, e.g. creasing and folding), 3D forming of paper materials, and in other related areas (e.g. printing, barriers, paper making, composites).
Johan Alfthan has a PhD in solid mechanics from KTH (Royal Institute of Technology), Stockholm, where he investigated mechanisms behind accelerated creep of paper in varying humidity (which is also known as mechano-sorptive creep).