Modeling of the temperature distribution in self-bonded beech-veneer boards during hot pressing
2015 (English)In: Pro Ligno, ISSN 1841-4737, E-ISSN 2069-7430, Vol. 11, no 4, 97-103 p.Article in journal (Refereed) Published
Auto-adhesion is a phenomenon that is in general related to the manufacture of wood-basedfibreboards, e.g. to the Masonite process or similar processes based on lignocellulosic raw materials.Auto-adhesion as a mechanism for the bonding of solid wood or veneer has not met with the sameindustrial success, but interest is increasing for environmental reasons and as a result of theincreasing cost of adhesives in wood products. The temperature in the laminate is crucial for the autoadhesionprocess that will result in bonding between veneers during hot-pressing. This paper presentsa model for the temperature evolution during the hot-pressing of a porous material, which wasdeveloped and verified for a five-veneer beech laminate pressed at a temperature of 250°C and apressure of 6MPa in an open system for 280 seconds. The result shows good agreement between themodel and the experimental temperature data during the hot-pressing. It can be concluded that a goodcontrol of the temperature evolution during the manufacture of adhesive-free veneer boards is of majorimportance to reach the target properties of the product.
Place, publisher, year, edition, pages
2015. Vol. 11, no 4, 97-103 p.
Forestry, agricultural sciences and landscape planning - Wood fibre and forest products
Skogs- och jordbruksvetenskap samt landskapsplanering - Träfiber- och virkeslära
Research subject Wood Technology
IdentifiersURN: urn:nbn:se:ltu:diva-3948Local ID: 1caf21c1-01e8-4ef4-8c22-4cffae88481aOAI: oai:DiVA.org:ltu-3948DiVA: diva2:976810
Validerad; 2016; Nivå 1; 20151225 (dicsan)2016-09-292016-09-29Bibliographically approved