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Method of making mechanical and chemi-mechanical papermaking pulp CA 1320067 C
Mid Sweden University, Faculty of Science, Technology and Media, Department of Chemical Engineering. (FSCN - High Yield Pulping Research Profile)
STFI.
Mid Sweden University, Faculty of Science, Technology and Media, Department of Chemical Engineering. (High Yield Pulping Research Profile)
Innventia (STFI).
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1993 (English)Patent (Other (popular science, discussion, etc.))
Abstract [en]

The invention relates to a method of manufacturing mechanical and chemi-mechanical papermaking pulp by disintegrating and beating wood material in at least two steps. The material is coarse-disintegrated in a first step at a concentration exceeding 20%, acid groups in the wood material are neutralized, the mater-ial is diluted to a concentration of 1-10% and beaten in one or several steps. Under these conditions the total energy consump-tion is substantially reduced without reducing the yield and deteriorating the properties of the pulp.

Place, publisher, year, edition, pages
1993.
Keyword [en]
mechanical pulping, chemimechanical pulping, low consistency refining, high consistency refining
National Category
Paper, Pulp and Fiber Technology
Identifiers
URN: urn:nbn:se:miun:diva-29424OAI: oai:DiVA.org:miun-29424DiVA: diva2:1051898
Patent
CA CA 1320067 C (1993-07-13)
Available from: 2016-12-05 Created: 2016-12-05 Last updated: 2016-12-13Bibliographically approved

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https://www.google.com/patents/CA1320067C?hl=sv&dq=engstrand+htun+svensson+patent&cl=en

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