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Method for producing and processing wood chips [Förfarande för framställning av flis]
Mid Sweden University, Faculty of Science, Technology and Media, Department of Chemical Engineering. (FSCN - High Yield Pulping Research Profile)
Mid Sweden University, Faculty of Science, Technology and Media, Department of Natural Sciences. (FSCN)ORCID iD: 0000-0002-3622-4247
Mid Sweden University, Faculty of Science, Technology and Media, Department of Natural Sciences. (FSCN High Yield Pulping Research Profile)
Mid Sweden University, Faculty of Science, Technology and Media, Department of Quality Technology and Management, Mechanical Engineering and Mathematics. (FSCN - High Yield Pulping Research Profile)
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2011 (English)Patent (Other (popular science, discussion, etc.))
Abstract [en]

This patent application describes a method to produce wood chips with the intention of reducing the energy consumption in the subsequent process steps for pulp production. With the present method wood chipping is done in a wood chipper where the chipping tool (3) has an angle γ (4) within the interval of 75° to 105° between the fibre direction of the log and the side of the tool which faces the chip (2). Angles in this interval will cause an axially directed compression of the chip which will cause a cracking of the wood during chipping.

Place, publisher, year, edition, pages
2011.
Keywords [en]
wood chips, chipping, mechanical pulp, chemical pulp, impregnation
National Category
Paper, Pulp and Fiber Technology
Identifiers
URN: urn:nbn:se:miun:diva-32903OAI: oai:DiVA.org:miun-32903DiVA, id: diva2:1184631
Patent
European Patent Office EP2542392 (2017-10-18)
Note

Patent also granted in Sweden 2012-09-25 (SE535557C2), China 2015-03-25 (CN102781639B), Russia 2015-08-10 (RU2558431C2) and Canada 2018-03-27 (CA2792058C).

Available from: 2018-02-21 Created: 2018-02-21 Last updated: 2018-04-17Bibliographically approved

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Carlberg, T.Hellström, Lisbeth M.

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Engstrand, PerCarlberg, T.Hellström, Lisbeth M.
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CiteExportLink to record
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Citation style
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