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Improved quality of SC magazine paper through enhanced fibre development using the ATMP process
Mid Sweden University, Faculty of Science, Technology and Media, Department of applied science and design. (FSCN)
QualTech AB (Previously Norske Skog ASA), SE-282 21, Tyringe, Sweden.
2012 (English)In: Nordic Pulp & Paper Research Journal, ISSN 0283-2631, Vol. 27, no 1, 35-41 p.Article in journal (Refereed) Published
Abstract [en]

A pilot scale refining trial was conducted using the ATMP (Advanced Thermomechanical Pulp) refining concept with White spruce as raw material. Low-intensity TMP and high-intensity TMP with mechanical pre-treatment of chips were compared to ATMP (Mg+P), where development of fibres was enhanced using hydrogen peroxide and magnesium hydroxide. The main goal of the trial was to evaluate the potential of using ATMP process for production of SC (supercalendered) magazine paper. SC paper is especially demanding when it comes to the paper surface structure which is strongly influenced by the development of fibre properties.

Improvement in individual fibre properties such as flexibility, fibre split index and fibre surface area index achieved using ATMP process was found to translate into decreased surface roughness and air permeability of calendered laboratory sheets. Both the refining process configuration and the addition of process chemicals were found to have significant impacts though the process configuration had major role. The influence of process chemicals on PPS was mainly pronounced after second stage refining. The magnitude of surface roughening (fibre rising) was found to be influenced mainly by the process configuration.

Place, publisher, year, edition, pages
2012. Vol. 27, no 1, 35-41 p.
Keyword [en]
ATMP; Energy reduction; Fibre roughening; Refiner bleaching; Sc paper
National Category
Chemical Process Engineering
URN: urn:nbn:se:miun:diva-15625ISI: 000311019900004ScopusID: 2-s2.0-84860195857OAI: diva2:469449
Available from: 2011-12-23 Created: 2011-12-23 Last updated: 2013-03-06Bibliographically approved

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