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Thermoforming of wood veneer composite sheets
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Narayana Srinivasan
Published/Copyright:
August 8, 2007
Abstract
Thermoforming of wood veneers into profiles is a novel idea and the focus of this paper is to study the formability characteristics of thin radiata pine (Pinus radiata D. Don) veneers, which are generally used as surface coverings. Radiata pine is well suited as a raw material for furniture, joinery, and interior architectural products. This is because it has excellent turning, shaping, and laminating properties and readily achieves brilliant stain and paint finishes. In this study, radiata pine veneers were softened by immersion in a hot water bath and then thermoformed by means of heated dies/moulds. The formability characteristics were investigated by conducting single-curvature V-bending tests. The influence of the forming method on the shape conformance of softened veneers under single- and multiple-bend conditions was examined. The paper also discusses the influences of manufacturing parameters that include the softening method, the die temperature, the duration of forming, the ratio of bend radius to veneer thickness, and the veneer architecture. The study clearly establishes the feasibility of forming veneers into multi-bend products in a semi-continuous manner using matched dies.
Received: 2006-8-18
Accepted: 2007-5-29
Published Online: 2007-08-08
Published in Print: 2007-8-1
©2007 by Walter de Gruyter Berlin New York
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Keywords for this article
matched die forming;
radiata pine veneers;
softening;
thermoforming;
V-bending
Articles in the same Issue
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- Chemical composition of 36 Brazilian Amazon forest wood species
- Characterization of non-cellulosic glucans in Eucalyptus globulus Labill. wood and kraft pulp
- Study of the phenolic compounds formed during pretreatment of sugarcane bagasse by wet oxidation and steam explosion
- Determination of the accessible hydroxyl groups in heat-treated Styrax tonkinensis (Pierre) Craib ex Hartwich wood by hydrogen-deuterium exchange and 2H NMR spectroscopy
- Lignin modification in the initial phase of softwood kraft pulp delignification with polyoxometalates (POMs)
- Synthesis of light-colored rosin glycerol ester
- Studies on fluorescence of cellulosics
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- Surface analysis of groundwood paper treated by diffuse coplanar surface barrier discharge (DCSBD) type atmospheric plasma in air and in nitrogen
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- Field assessment of wood stake decomposition in forest soil
