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Accelerated durability testing of wood-base fiber and particle panel materials

https://library.fpinnovations.ca/en/permalink/fpipub1494
Author
Unligil, H.H.
Date
March 1982
Edition
37999
Material Type
Research report
Field
Wood Manufacturing & Digitalization
considerable interest has developed in expanding the market by producing panels suitable for new areas
Author
Unligil, H.H.
Date
March 1982
Edition
37999
Material Type
Research report
Physical Description
7 p.
Sector
Wood Products
Field
Wood Manufacturing & Digitalization
Research Area
Advanced Wood Manufacturing
Subject
Wood
Panels
Materials
Series Number
CFS/DSS project no 12/81-82
3-65-57-016
E-23
Location
Ottawa, Ontario
Language
English
Abstract
Composite materials - Durability
Wood-based panels
Wood-based panels - Durability
Wood Based Composites
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Lumber and wood composite panel production from budworm-attacked eastern spruce

https://library.fpinnovations.ca/en/permalink/fpipub38562
Author
Hsu, W.H.E.
Date
January 1980
Material Type
Research report
Field
Wood Manufacturing & Digitalization
Discussion 69 Part V PRODUCTION OF COMPOSITE PANELS 93 Introduction 93 Methods and Material 93 Results
Author
Hsu, W.H.E.
Date
January 1980
Material Type
Research report
Physical Description
117 p.
Sector
Wood Products
Field
Wood Manufacturing & Digitalization
Research Area
Advanced Wood Manufacturing
Subject
Spruce budworm
Pinus
Spruce
Recovery
Panels
Insects
Series Number
6568506
E-1576
Location
Ottawa, Ontario
Language
English
Abstract
Type and extent of biodeterioration occurring on eastern spruce trees, Picea spp., infested by spruce budworm Choristoneura fumiferana (Clem.), and its effect on the value of timber as raw material for lumber and compoition board production was investigated in New Brunswick and Nova Scotia. Moderately defoliated, severely defoliated and dead (standing) trees were examined and compared with normal trees. The results indicated that the loss in wood quality due to fungal decay and insect damage on defoliated trees was not substantial and could be ignored in the use of the wood as raw material for the products mentioned above. Dead trees were found to be deteriorated to a considerable extent, mainly as a result of fungal decay, especially on the butt ends, and contained moisture in most parts to a level considered favorable for fungal decay. Decay and insect damage present on dead trees did not affect the lumber processing rate. Lower lumber recovery, however, and especially downgrading, resulted in a 21% loss of the value of lumber recovered. Particle boards and waferboards produced from the roundwood from dead trees (6-foot bolts, 7 to 13 feet from the ground) were excellent in quality and equal to those produced from unattacked or defoliated trees. A storage study was initiated near Fredericton, N.B. Six-foot long bolts from dead, defoliated and normal trees, with and without bark, will be monitored and examined for the rate and causes of deterioration during storage.
Spruce - Insects and diseases
Spruce budworm
Composite panel - Manufacture
Lumber recovery
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