lnu.sePublications
Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Mechanical processing for improved products made from Swedish hardwood
Växjö University, Faculty of Mathematics/Science/Technology, School of Technology and Design.ORCID iD: 0000-0003-0130-3356
2008 (English)Doctoral thesis, comprehensive summary (Other academic)
Abstract [en]

Swedish hardwood is today used in the energy, pulp and mechanical hardwood industries. Only very small volumes of Swedish hardwood are, however, consumed by the mechanical industry that normally pays the highest timber price. The smallness of the volumes used for mechanical refinement is a result both of forestry not focusing on the production of hardwood for these uses, and of the fact that the mechanical hardwood industry, particularly the sawing industry, is not designed to process the existing raw material in an optimal manner. This thesis discusses the possibilities of improving the conditions for the mechanical refinement of hardwood. The aim of the work has been to investigate the possibilities of developing products and methods for processing of Swedish hardwood.

The thesis proposes a new manufacturing system for Swedish hardwood to better utilize the inherent properties of the wood material. The system is based on the so-called PrimWood Method and the star-sawing concept. Compared to normally sawn wood, the sawing concept utilizes the raw material more efficiently with regard to volume yield, and increases the distance between knots in the sawn wood. The material produced has vertical annual rings which give the wood smaller movements as a result of moisture variations and a different textural appearance. Using the PrimWood Method for hardwood would make it possible to more closely match customer requirements regarding hardwood products.

Since Swedish hardwood is nowadays mainly used indoors, a possible way of expanding the market would be to increase the outdoor use of the material. Here the durability is of great importance, and one important factor is then the capillary characteristics of the material. The thesis therefore focuses on the characterisation of the capillarity in wood for the future improvement of its durability. It is shown that with the material produced by the proposed manufacturing system, i.e. wood with vertical annual rings, the possibility of using hardwood outdoors increases, because the susceptibility to cracking decreases.

Place, publisher, year, edition, pages
Växjö: Växjö University Press , 2008. , p. 140
Series
Acta Wexionensia, ISSN 1404-4307 ; 157/2008
Keywords [en]
capillarity, capillary transport, wood products, customer requirements, ecoeffectiveness, , sawing pattern, star-sawing, the PrimWood Method, timber products, volume yield, water transport
National Category
Wood Science
Identifiers
URN: urn:nbn:se:vxu:diva-2457ISBN: 978-91-7636-631-8 (print)OAI: oai:DiVA.org:vxu-2457DiVA, id: diva2:206394
Public defence
2008-12-12, Tegner, Växjö universitet, 351 95, Växjö, 10:00
Opponent
Supervisors
Available from: 2009-01-12 Created: 2009-01-12 Last updated: 2019-05-20Bibliographically approved

Open Access in DiVA

fulltext(1158 kB)980 downloads
File information
File name FULLTEXT01.pdfFile size 1158 kBChecksum MD5
85698c039b86bae3c6fceeaa239434869e76473d4b99e2c91715daddf79bfc6158e45d5b
Type fulltextMimetype application/pdf

Authority records BETA

Johansson, Jimmy

Search in DiVA

By author/editor
Johansson, Jimmy
By organisation
School of Technology and Design
Wood Science

Search outside of DiVA

GoogleGoogle Scholar
Total: 980 downloads
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

isbn
urn-nbn

Altmetric score

isbn
urn-nbn
Total: 484 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf