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Irreversible long fibre collapse at high temperature refining in a TMP system: Effects on fibre and surface properties
Mid Sweden University, Faculty of Science, Technology and Media, Department of Natural Sciences, Engineering and Mathematics. (Mekaniskmassa)
Mid Sweden University, Faculty of Science, Technology and Media, Department of Natural Sciences, Engineering and Mathematics. (Mekansikmassa)
2009 (English)In: Nordic Pulp & Paper Research Journal, ISSN 0283-2631, E-ISSN 2000-0669, Vol. 24, no 1, p. 19-24Article in journal (Refereed) Published
Abstract [en]

Effects on fibre and sheet properties of preheating to temperature well above the softening temperature of lignin in refining of spruce TMP reject were evaluated. This study indicates that an improved surface smoothness can be attained on TMP-based wood-containing papers through high-temperature reject refining. Under these conditions the degree of irreversible fibre collapse increased. Results from tests of the fibre-wall, fibre surface characteristics, pulp yield and sheet brightness show only marginal differences at high temperatures compared to standard reject refining. Experiments in which laboratory sheets were moistened showed that a high degree of irreversible fibre collapse correlates with surface smoothness.

Place, publisher, year, edition, pages
2009. Vol. 24, no 1, p. 19-24
Keyword [en]
fibre collapse, high temperature, reject refining, TMP
National Category
Paper, Pulp and Fiber Technology
Identifiers
URN: urn:nbn:se:miun:diva-8393DOI: 10.3183/NPPRJ-2009-24-01-p019-024ISI: 000265250200002Scopus ID: 2-s2.0-65349151235OAI: oai:DiVA.org:miun-8393DiVA, id: diva2:134505
Available from: 2009-01-21 Created: 2009-01-21 Last updated: 2017-12-14Bibliographically approved
In thesis
1. Effects of Reject Refining at High Temperature on TMP Fibre Properties
Open this publication in new window or tab >>Effects of Reject Refining at High Temperature on TMP Fibre Properties
2008 (English)Doctoral thesis, comprehensive summary (Other academic)
Place, publisher, year, edition, pages
Sundsvall: Mid Sweden University, 2008. p. 79
Series
Mid Sweden University doctoral thesis, ISSN 1652-893X ; 64
Keyword
Fibre collapse, fibre decollapse, high temperature, refining, reject, roughening, bonding, acoustic emission, mechanical pulping, softening temperature, bond strength
National Category
Paper, Pulp and Fiber Technology
Identifiers
urn:nbn:se:miun:diva-8397 (URN)978-91-86073-17-6 (ISBN)
Public defence
2008-11-28, M108, Sundsvall, 10:00 (Swedish)
Opponent
Supervisors
Available from: 2009-01-22 Created: 2009-01-21 Last updated: 2009-01-22

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Norgren et al: Irreversible long fibre collapse at high temperature refining in a TMP system NPPRJ 2009 24 1 pp 19-24(661 kB)772 downloads
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Norgren, SvenHöglund, Hans

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CiteExportLink to record
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Citation style
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Output format
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