Residual stresses in paperboard through the manufacturing process
2005 (English)In: Journal of Pulp and Paper Science (JPPS), ISSN 0826-6220, Vol. 31, no 4, 197-201 p.Article in journal (Refereed) Published
The residual stresses in a machine-made multi-ply board with chemical pulp in all plies were monitored as the board progressed after the initial drying through calendering, moisture treatments and coating. After drying, the stresses were compressive near the surfaces. In the coated board at the end of the machine, the stress state was reversed to a large extent with tensile stresses in the outermost layers. The various moisture applications on the board in the post-processing steps are regarded to have caused the change in the residual stress state. In another machine-made board, with mechanical pulp in the middle plies, the stresses after drying were limited to the surface plies made from chemical pulp, but were again compressive at the surfaces. This stress state was largely unaffected by post-processing. The possibility for stress reversal and the implications on in-plane and out-of-plane dimensional stability of the boards are discussed.
Place, publisher, year, edition, pages
2005. Vol. 31, no 4, 197-201 p.
multiply boards, stresses, tensile stress, chemical pulps, board machines
Engineering and Technology
IdentifiersURN: urn:nbn:se:kth:diva-8190ISI: 000234572400007ScopusID: 2-s2.0-30844451592OAI: oai:DiVA.org:kth-8190DiVA: diva2:13445