Skip to Main Content
U.S. Forest Service
Caring for the land and serving people

United States Department of Agriculture

Home > Search > Publication Information

  1. Share via EmailShare on FacebookShare on LinkedInShare on Twitter
    Dislike this pubLike this pub
    Author(s): John F. Hunt; Aziz Ahmed; Katherine Friedrich
    Date: 2008
    Source: Forest products journal. Vol. 58, no. 6 (June 2008): Pages 82-87
    Publication Series: Scientific Journal (JRNL)
    PDF: Download Publication  (531 KB)


    As a part of the National Fire Plan, the USDA Forest Service is conducting research to reduce the severity of forest fires through effective utilization of low-or no-value logging residues and forest thinnings. This report explores the effect of processing on the physical properties of the fibrous material and flat fiberboard panels made from small-diameter lodgepole pine treetops processed with the bark. Delimbed treetops were chipped and fiberized with water using commercial equipment, digested with hot water and/or small amounts of chemical additives, refined in a disk refiner, and hot-pressed to make flat panels. To observe only the effects of water and additives on fiber bonding, adhesive resin was not used. We evaluated the effects of processing variables (digester temperature, refining level, and sodium hydroxide content) on fiber length, freeness, fines content, and shive content. Fiber quality was related to mechanical properties of the flat panels. The mechanical properties of the resin-free fiberboard surpassed the minimum standards for commercial hardboard. We conclude that small-diameter lodgepole pine treetops with bark are well-suited for the production of structural boards. This research is part of a larger program for developing three-dimensional geometries for engineered fiberboard products.

    Publication Notes

    • 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.


    Hunt, John F.; Ahmed, Aziz; Friedrich, Katherine. 2008. Effects of fiber processing on properties of fiber and fiberboard made from lodgepole pine treetops. Forest Products Journal. 58(6): 82-87


    Fiberboard, testing, mechanical properties, lodgepole pine, slash, wood fibers, thinnings, small timbers, smallwood, physical properties, small-diameter timber

    Related Search

    XML: View XML
Show More
Show Fewer
Jump to Top of Page