Skip to Main Content
Flakeboard thickness swelling. Part I, Stress relaxation in a flakeboard matAuthor(s): R. L. Geimer; J. H. Kwon; J. Bolton
Source: Wood and fiber science. Vol. 30, no. 4 (Oct. 1998).:p. 326-338.
Publication Series: Miscellaneous Publication
PDF: View PDF (277 KB)
DescriptionThe steam injection schedule best suited for dimensionally stabilizing a flake mat is one in which steam treatment is initiated before the press is closed and is continued at least until the mat attains target thickness. Experiments showed that resinless mats treated with 20 sec of steam at 600 kPa had maximum thickness swelling of 205% compared to 350% for resinless mats pressed in a conventional fashion. Reductions in thickness swelling were proportional to steam duration and pressure. Mats treated with 20 sec of steam at 1.950 kPa had only one-tenth the thickness swelling measured in conventionally pressed mats. We believe that reduction of thickness swelling is dependent on a number of factors, lncluding ptasticization of the wood, bligninc flow, and molecular changes in the wood structure.
- We recommend that you also print this page and attach it to the printout of the article, to retain the full citation information.
- This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.
CitationGeimer, R. L.; Kwon, J. H.; Bolton, J. 1998. Flakeboard thickness swelling. Part I, Stress relaxation in a flakeboard mat. Wood and fiber science. Vol. 30, no. 4 (Oct. 1998).:p. 326-338.
KeywordsFlakeboards, Swelling, Thickness, Dimensional stability, Steam injection, Oriented strandboard
- Flakeboard thickness swelling. Part II, Fundamental response of board properties to steam injection pressing
- Effects of A New Caul System on Strength and Stability of Structural Flakeboard
- Effects of panel density and mat moisture content on processing medium density fiberboard
XML: View XML