Method For Obtaining Wood/Bark Adhesion Measurements on Small Samples

Authors

  • M. (Harder) Fiscus
  • R. H. Van Eperen
  • D. W. Einspahr

Keywords:

Wood/bark adhesion, debarking, shear parallel to grain

Abstract

Using the Instron Tester, a procedure has been developed for measuring wood/bark adhesion on small samples. Using very small, specially prepared samples, wood/bark adhesion measurements were made on twenty-four hardwoods and eighteen conifers. High dormant season wood/bark adhesion in hardwoods was found to be associated with the presence of fibers in the inner bark. The procedure appears to be useful in identifying difficult-to-debark species and evaluating methods of reducing adhesion.

References

Berlyn. R. W. 1965. The effect of variation in the strength of the bond between bark and wood on mechanical barking. Woodlands Research Index, Pulp and Paper Research Inst. of Canada No. 174. 22 pp.nMcIntosh. D. C. 1951. Effects of chemical treatment of pulpwood trees. Forestry Branch, Forest Products Laboratories Div., Dep. of Forest Products and Development, Ottawa, Canada Bull. No. 100. 29 pp.nSchutt, C. 1960. Chemical debarking of trees; a review of literature. Paperi Puu11:579-598.nWilcox, H. E., F. J. Czabator, and G. Girolami. 1954. Seasonal variations in bark-peeling characteristics of some Adirondack pulpwood species. J. Forestry52(5):338-342.nWilcox, H. E., F. J. Czabator, G. Girolami., D. Moreland, and R. Smith. 1956. Chemical debarking of some pulpwood species. State Univ. of New York College of Forestry at Syracuse, Tech. Pub. No. 77. 43 pp.nZakharov, V. V. 1963. The strength of the adherence of bark to wood at low temperatures. Derevoobrabat. Prom.12(9):10.n

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Published

2007-06-27

Issue

Number 3 / July 1983

Section

Research Contributions

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