Manufacturing method for a high durability, high insulating composite timber member and a composite timber member
AssigneeSAGA Wood Holding AS
InventorsLars Højmann Kristensen, Finn Borg
Life of this patent
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Abstract
The present invention describes a method for thermo-treatment of wood, where said method comprises the following steps: a) selecting the wood to be as free from knots as possible b) introducing the wood to a temperature increase up to approximately 173° C.; c) maintaining the wood at an ambient temperature of 173° C. for 3-5 hours; d) decreasing the temperature to approx. 20° C.; e) introducing the wood into an autoclave wherein a mixture of linseed oil and mineral oil is applied to the wood, and allowing the mixture to penetrate the wood f) retrieving and storing the treated wood. Furthermore a timber member made with wood treated according to the method is disclosed.
Claims13
Manufacturing method for obtaining an increased durability, increased insulating composite timber member, where said method comprises the following steps:
- a. Introducing wood to be treated into a treatment unit, selecting substantially knot-free wood to be treated;
- b. Increasing the temperature and/or pressure to a first elevated level inside the treatment unit and maintaining said first elevated temperature for a pre-determined period of time, wherein said first elevated temperature level is in a range of about 170° C. to 175° C. for between 45 minutes and up to 6 hours;
- c. Decreasing the temperature and/or pressure to a certain lower level for a certain pre-determined period of time, wherein said lower level is in a range of about 20° C. to 60° C. and introducing the wood into an autoclave or into the treatment unit, and applying a mixture of linseed oil and mineral oil to the wood, and allowing the mixture to penetrate the wood;
- and
- d. Retrieving and storing the treated wood.
Dependencies are inferred from the claim text.