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Basic knowledge of wood properties for improved performance of laminated Veneer products
Linnéuniversitetet.
Linnéuniversitetet.
Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, Träteknologi.ORCID-id: 0000-0002-4526-9391
2013 (engelsk)Inngår i: Pro Ligno, ISSN 1841-4737, E-ISSN 2069-7430, Vol. 9, nr 4, s. 549-556Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

To ensure success in the production of laminated veneer products, it is necessary to acquire a sound basic understanding of the behaviour of the wood, and to understand the inherent reactions of wood to adhesive, heat, moisture, strain and stress. This can ensure an efficient wood utilization and promote the development of new processes and products that take advantage of the visco-elastic nature of wood. A shortcoming of the laminated bending process is that the products may become distorted after moulding and during use. In this study, we have examined how the performance of laminated veneer products can be improved through the implementation of basic knowledge of wood in the design and production process. The results show that the material and process parameters and storage in a changing relative humidity have a clear impact on distortion. Fibre orientation of the veneers in the moulded assembly was the most critical parameter to control. Fibre deviations mainly resulted in twist of the product. A moisture content in one veneer deviating from that of the rest of the veneers in the assembly before moulding resulted in distortion of the laminated veneer products both after moulding and during use. To decrease the negative effect of fibre orientation and moisture content on shape stability, the veneer should be straight-grained and well-conditioned to a moisture level adapted to the use of the final product. Special care should also be taken to orientate the veneers during assembly before moulding.

sted, utgiver, år, opplag, sider
2013. Vol. 9, nr 4, s. 549-556
Emneord [en]
Forestry, agricultural sciences and landscape planning - Wood fibre and forest products
Emneord [sv]
Skogs- och jordbruksvetenskap samt landskapsplanering - Träfiber- och virkeslära
HSV kategori
Forskningsprogram
Träteknik
Identifikatorer
URN: urn:nbn:se:ltu:diva-34802Lokal ID: 9189a59b-9036-4846-a79f-6a807862f6e5OAI: oai:DiVA.org:ltu-34802DiVA, id: diva2:1008053
Konferanse
International Conference Wood Science and Engineering in the Third Millennium : 07/11/2013 - 09/11/2013
Merknad
Godkänd; 2014; 20131112 (ysko); Konferensartikel i tidskriftTilgjengelig fra: 2016-09-30 Laget: 2016-09-30 Sist oppdatert: 2017-11-30bibliografisk kontrollert

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