The following are summary findings

The following are summary findings from this study.
• Binderless fiberboards made from recycled low-yield
pulp fiber (OCC) produced higher density panels than did high-yield virgin pulp fibers at the same pressing condi­tions.
• Panel properties increase as chemical processing and refin­ing of the higher-yield pulp increases.
• Moisture contents are different for fiberboard made from
the two fiber types conditioned at the same RH.
• Moisture contents doubled within panels for both fiber
types when going from 50 to 90 percent RH conditions.
• Mechanical properties decrease by approximately one-half
with a doubling of the MC, except for tensile energy absorp­
tion.
• Tensile stress/strain curves show significant differences be­
tween OCC and high-yield lodgepole pine processed fibers.
• A high-strength binderless fiberboard panel made from fi­
ber derived from forest residues obtained from lodgepole pine
treetops and OCC both exceed minimum high-density hard­
board standards.
These results indicate that fibers from OCC or forest resi­
dues could both be used as a fiber resource to produce a high-
strength product if a production facility using wet-forming
technology was considering switching fiber sources. Addi­
tional research will investigate what effects different recycled
fiber types, resin type, resin amount, and pressing conditions
have on physical and mechanical properties of panels.