Optimal shear/compression forces: a way of collapsing coarse TMP fibres
2007 (English)In: Journal of Pulp and Paper Science (JPPS), ISSN 0826-6220, Vol. 33, no 1, 22-28 p.Article in journal (Refereed) Published
Fundamental studies of wood have indicated that, with a proper combination of shear and compression forces, it might he possible to collapse wood fibres effectively. To study the applicability of such a combination of shear and compression forces for fibre deformation, a laboratory device for carrying out tests continuously on coarse fibre mats was constructed. Coarse mechanical pulp fibres in the form of sheets were fed through the device, applying differential speeds on two rolls for providing various combinations of shear and compression forces. With the application of a limited shear force, as compared to the compression forces, fibre collapse and bonding could he improved with only a limited amount of work. This indicates a potential for improved paper strength properties in mechanical pulp fibres. Reducing the speeds of the rolls and increasing the temperature proved to he favourable for improving fibre collapse.
Place, publisher, year, edition, pages
2007. Vol. 33, no 1, 22-28 p.
thermomechanical pulps, fibers, pressure, collapse, compression, shear stress, strength properties
Paper, Pulp and Fiber Technology
IdentifiersURN: urn:nbn:se:kth:diva-6802ISI: 000246589100004OAI: oai:DiVA.org:kth-6802DiVA: diva2:11614
QC 201011192007-02-222007-02-222010-11-19Bibliographically approved