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Elimination of pinewood nematodes from Canadian lumber

https://library.fpinnovations.ca/en/permalink/fpipub37228
Author
Morris, Paul I.
Cook, Jean A.
Clark, Jean E.
Hamm, E.A.
Date
February 1991
Material Type
Research report
Field
Wood Manufacturing & Digitalization
Author
Morris, Paul I.
Cook, Jean A.
Clark, Jean E.
Hamm, E.A.
Date
February 1991
Material Type
Research report
Physical Description
60 p.
Sector
Wood Products
Field
Wood Manufacturing & Digitalization
Research Area
Advanced Wood Manufacturing
Subject
Wood
Pinus
Series Number
Forestry Canada No. 4;1712K010
W-833
Location
Vancouver, British Columbia
Language
English
Abstract
The objective of this research was to determine whether the pinewood nematode can colonize all coastal wood species and to develop heat and/or chemical treatments to eliminate it from infected lumber. Much of the effort in this project was expended in developing the proposal for the cooperative research program entitled "The use of heat treatment in the eradication of PWN and its vectors from softwood lumber". Two major pieces of work required in preparation for this proposal were as follows: the development of the experiment design and statistical analysis necessary to demonstrate the reliability of the pasteurization process; and, the selection and testing of a model for analyzing the results of the heating studies on different wood species and different thicknesses of lumber.
Pine wood nematodes
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A numerical examination of bandsaw blade tooth stiffness

https://library.fpinnovations.ca/en/permalink/fpipub37234
Author
Taylor, J.
Hutton, S.G.
Date
March 1991
Material Type
Research report
Field
Wood Manufacturing & Digitalization
Author
Taylor, J.
Hutton, S.G.
Date
March 1991
Material Type
Research report
Physical Description
19 p.
Sector
Wood Products
Field
Wood Manufacturing & Digitalization
Research Area
Advanced Wood Manufacturing
Subject
Band saws
Saw bands
Saws
Bands
Series Number
Forestry Canada No. 47;1215K003
W-840
Location
Vancouver, British Columbia
Language
English
Abstract
In this paper, the finite element method is used to examine the affect of the standard bandsaw operating parameters - such as blade width, blade thickness, span length, tooth size, bandmill strain and roll-tensioning stresses - on lateral tooth stiffness. The results are presented graphically. Specific examples of how changes to the operating parameters can affect tooth stiffness are presented and indicate that, for some conditions, increases in bandmill strain of over 40% are required to regain tooth stiffness lost through reducing blade thickness by one gauge. The relationship between the fundamental torsional frequency and lateral tooth stiffness, for a range of roll-tensioning positions, is examined and shows that an increase in frequency is always accompanied by increase in tooth stiffness. The converse, however, is not always true.
Saws - Band
Finite element
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Evaluation of wood properties from the forest resource

https://library.fpinnovations.ca/en/permalink/fpipub37237
Author
Troughton, G.E.
Walser, D.C.
Andersen, Axel W.
Date
March 1991
Material Type
Research report
Field
Wood Manufacturing & Digitalization
Author
Troughton, G.E.
Walser, D.C.
Andersen, Axel W.
Date
March 1991
Material Type
Research report
Physical Description
53 p.
Sector
Wood Products
Field
Wood Manufacturing & Digitalization
Research Area
Advanced Wood Manufacturing
Subject
Veneer
Laminate product
Series Number
Forestry Canada No. 35;1812L007
W-843
Location
Vancouver, British Columbia
Language
English
Abstract
Unseasoned spruce heart veneer was incised and steam-press dried using platen pressures of 25, 100 and 200 psi. Three-ply plywood panels were then prepared from these densified veneers. Results showed that the stiffness values for laminated veneer lumber (LVL) made with low stiffness SPF veneer or combinations of SPF and Douglas-fir veneer can be greatly increased and meet the 2,000,000 psi MOE marketing requirement using two methods. One involves impregnating unseasoned SPF veneer with phenolic resin and the second method involves using a special lay-up of the SPF and Douglas-fir veneers. These results will greatly help in marketing LVL using western veneer species. New technology of incising, moisture tolerant adhesives and self-generated steam developed at Forintek substantially reduced pressing time by about 40% which will make the manufacture of LVL more economical.
Lumber, Laminated veneer
Modified woods
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The use of heat treatment in the eradication of the pinewood nematode and its vectors in softwood lumber

https://library.fpinnovations.ca/en/permalink/fpipub37309
Author
Smith, R.S.
Date
December 1991
Material Type
Research report
Field
Wood Manufacturing & Digitalization
Author
Smith, R.S.
Date
December 1991
Material Type
Research report
Physical Description
2 v.
Sector
Wood Products
Field
Wood Manufacturing & Digitalization
Research Area
Advanced Wood Manufacturing
Subject
Wood
Pinus
Kilns
Insects
Series Number
W-1023
Location
Vancouver, British Columbia
Language
English
Abstract
Forintek Canada Corp., as a scientific organization, was commissioned by the Task Force on Pasteurization of Softwood Lumber to lead a research initiative to examine heat treatment (pasteurization) as an alternative to kiln drying for the eradication of pinewood nematode (PWN) and a sawyer beetle (Monochamus) from green, unseasoned softwood lumber. The project had a laboratory component (Phase I) where statistical analysis for confidence and reliability could be used to determine a mortality curve for PWN on wood samples. Concurrent studies (Phase II) using laboratory dry kilns were done to measure heating times for a wide range of wood species and selected wood species of different thicknesses. From the first two Phases of the project a demonstration (Phase III) of the successful application of pasteurization to green lumber was then arranged at three sawmill sites across Canada, with verification by scientists of the European Economic Community (EC) team. Finally, Phase IV in the project evaluated some alternate technologies to pasteurization.
Pine wood nematodes - Control
Cerambycidae - Control
Insects - Control by kiln sterilization
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Development of a new feed speed control system for band saws

https://library.fpinnovations.ca/en/permalink/fpipub37365
Author
Kirbach, E.
Pirouz, Z.
Date
September 1991
Material Type
Research report
Field
Wood Manufacturing & Digitalization
Author
Kirbach, E.
Pirouz, Z.
Contributor
Science Council of British Columbia
Date
September 1991
Material Type
Research report
Physical Description
1 v.
Sector
Wood Products
Field
Wood Manufacturing & Digitalization
Research Area
Advanced Wood Manufacturing
Subject
Band saws
Saw bands
Saws
Bands
Saw mills
Automatic control
Series Number
W-1165
Location
Vancouver, British Columbia
Language
English
Abstract
The objective of this project was to develop a new feed speed control system for band saws. This system regulates the feed speed based on the cutting depth measured ahead of the saw. In comparison to other feed speed control systems presently used in sawmill operations, the new system allows maximum feed speeds without overfeeding the saw and also avoids underfeeding. The equipment developed basically involves two laser light generators which place laser lines along the saw cut on the saw entry and saw exit side, two cameras which locate the position of the laser or saw lines, and a microprocessor which processes the information from the cameras, determines the feed speed based on the known relationship between sawing variables and gives the signal to the carriage drive. Considerable experimenting was required to accurately measure the distance between the laser lines on the saw log due to colour variations of the long surface and more so due to the irregular geometry of many saw logs. Also a high working speed of the system had to be achieved to correspond to the high feed speeds used in sawmill operations. The new feed speed control system was tested with Forintek's 5-ft band mill. It was found that the actual feed speed set by the feed speed control, and the calculated feed speed were in close agreement showing that the system is able to effectively control the feed speed based on the cutting depth. Additional work is needed and will be carried out to further refine the system before commercialization can be undertaken.
Saws - Band
Sawmilling - Automation
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Method for protection of lumber against sapstain

https://library.fpinnovations.ca/en/permalink/fpipub5917
Author
Seifert, K.A.
Bilmer, B.C.
Mes-Hartree, M.
Date
August 1991
Edition
41633
Material Type
Research report
Field
Wood Manufacturing & Digitalization
Author
Seifert, K.A.
Bilmer, B.C.
Mes-Hartree, M.
Date
August 1991
Edition
41633
Material Type
Research report
Physical Description
26 p.
Sector
Wood Products
Field
Wood Manufacturing & Digitalization
Research Area
Advanced Wood Manufacturing
Subject
Sapstain
Location
Ottawa, Ontario
Language
English
Abstract
The present invention consists of a method of protecting wood or wood products against unwanted sapstain by treating said wood with one or more biological control microorganisms selected from the genus Gliocladium, (fungi: Hyphomycetes), that either prevents the growth of undesirable sapstaining organisms, or prevents the formation of discolouration by these organisms.
Lumber
Sapstain
Protection
Documents
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Investigation of flatwise and edgewise bending properties of laminated veneer lumber tested parallel to grain

https://library.fpinnovations.ca/en/permalink/fpipub5494
Author
Palka, L.C.
Stroh, L.
Troughton, G.E.
Andersen, Axel W.
Date
March 1991
Edition
37256
Material Type
Research report
Field
Wood Manufacturing & Digitalization
Author
Palka, L.C.
Stroh, L.
Troughton, G.E.
Andersen, Axel W.
Date
March 1991
Edition
37256
Material Type
Research report
Physical Description
12 p.
Sector
Wood Products
Field
Wood Manufacturing & Digitalization
Research Area
Advanced Wood Manufacturing
Subject
Veneer
Mechanical properties
Sample
Laminate product
Series Number
W-873
Location
Vancouver, British Columbia
Language
English
Abstract
The purpose of this study was to determine flatwise and edgewise bending strength ("MOR") and stiffness ("MOE") of spruce and pine 1.5-inch by 3.5-inch by 48-inch laminated veneer lumber ("LVL") specimens parallel to grain. The experimental spruce and pine data was pooled together to give a combined spruce-pine data set.
Appendix 1 to Forestry Canada No. 35, Contract no. 1812L007 on lumber and laminated veneer strength.
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Bending modulus of elasticity and strength of 1.75" x 3.5" x 96" Douglas-fir microlam and spruce specimens

https://library.fpinnovations.ca/en/permalink/fpipub5495
Author
Palka, L.C.
Rovner, B.
Olson, L.
Wakeman, R.G.
Walser, D.C.
Date
March 1991
Edition
37257
Material Type
Research report
Field
Wood Manufacturing & Digitalization
Author
Palka, L.C.
Rovner, B.
Olson, L.
Wakeman, R.G.
Walser, D.C.
Date
March 1991
Edition
37257
Material Type
Research report
Physical Description
12 p.
Sector
Wood Products
Field
Wood Manufacturing & Digitalization
Research Area
Advanced Wood Manufacturing
Subject
Veneer
Mechanical properties
Laminate product
Series Number
Appendix 2 to Forestry Canada No. 35
Contract no. 1812L007
W-874
Location
Vancouver, British Columbia
Language
English
Abstract
The purpose of this small study was to examine the effect of various test methods upon the bending moduli of elasticity and to determine the bending strength of selected Douglas-fir and spruce laminated veneer lumber specimens.
Lumber, Laminated veneer - Strength
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The use of heat treatment in the eradication of the pinewood nematode and its vectors in softwood lumber (annex documents)

https://library.fpinnovations.ca/en/permalink/fpipub40191
Author
Smith, R.S.
Date
December 1991
Material Type
Research report
Field
Wood Manufacturing & Digitalization
Author
Smith, R.S.
Date
December 1991
Material Type
Research report
Physical Description
1 v.
Sector
Wood Products
Field
Wood Manufacturing & Digitalization
Research Area
Advanced Wood Manufacturing
Subject
Wood
Pinus
Kilns
Insects
Location
Québec, Québec
Language
English
Abstract
Forintek Canada Corp., as a scientific organization, was commissioned by the Task Force on Pasteurization of Softwood Lumber to lead a research initiative to examine heat treatment (pasteurization) as an alternative to kiln drying for the eradication of pinewood nematode (PWN) and a sawyer beetle (Monochamus) from green, unseasoned softwood lumber. The project had a laboratory component (Phase I) where statistical analysis for confidence and reliability could be used to determine a mortality curve for PWN on wood samples. Concurrent studies (Phase II) using laboratory dry kilns were done to measure heating times for a wide range of wood species and selected wood species of different thicknesses. From the first two Phases of the project a demonstration (Phase III) of the successful application of pasteurization to green lumber was then arranged at three sawmill sites across Canada, with verification by scientists of the European Economic Community (EC) team. Finally, Phase IV in the project evaluated some alternate technologies to pasteurization.
Pine wood nematodes - Control
Cerambycidae - Control
Insects - Control by kiln sterilization
Documents
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Modélisation graphique du débitage du bois

https://library.fpinnovations.ca/en/permalink/fpipub42045
Author
Grondin, Michel
Levesque, Y.
Thibault, R.
Date
March 1991
Material Type
Research report
Field
Wood Manufacturing & Digitalization
Author
Grondin, Michel
Levesque, Y.
Thibault, R.
Date
March 1991
Material Type
Research report
Physical Description
7 p.
Sector
Wood Products
Field
Wood Manufacturing & Digitalization
Research Area
Digitalization
Subject
Simulation
Sawing
Series Number
E-3552
Location
Sainte-Foy, Québec
Language
French
Abstract
Sawing simulation - Models
Documents
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Aqueous phenolic dispersions for bonding wood composites

https://library.fpinnovations.ca/en/permalink/fpipub889
Author
Troughton, G.E.
Andersen, Axel W.
Walser, D.C.
Date
March 1991
Edition
37236
Material Type
Research report
Field
Wood Manufacturing & Digitalization
Author
Troughton, G.E.
Andersen, Axel W.
Walser, D.C.
Date
March 1991
Edition
37236
Material Type
Research report
Physical Description
49 p.
Sector
Wood Products
Field
Wood Manufacturing & Digitalization
Research Area
Advanced Wood Manufacturing
Subject
Phenols
Gluing
Glue
Series Number
Forestry Canada No. 36;1812L006
W-842
Location
Vancouver, British Columbia
Language
English
Abstract
A series of dispersion-resin plywood formulations were prepared in the laboratory and their bond performance assessed on incised spruce veneer at 10% m.c. Excellent bond quality results were achieved in these laboratory experiments as indicated by high average % wood failure values of over 90%. To further develop the plywood dispersion resin, a pilot plant trial at a gluing company was conducted and again excellent bond quality results were achieved. A large quantity of the plywood dispersion resin was prepared and a successful mill trial at Cantree Plywood was carried out. This trial demonstrated that more dimensionally stable panels can be prepared from high m.c. veneer. The waferboard dispersion technology developed in this study helped facilitate a mill trial using high moisture content face wafers.
Glue, Phenolic
Gluing - Influence of moisture content
Documents
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Chop saw technology for lumber remanufacturing - what are the options?

https://library.fpinnovations.ca/en/permalink/fpipub891
Author
Williams, D.
Date
July 1991
Edition
37238
Material Type
Research report
Field
Wood Manufacturing & Digitalization
Author
Williams, D.
Date
July 1991
Edition
37238
Material Type
Research report
Physical Description
25 p.
Sector
Wood Products
Field
Wood Manufacturing & Digitalization
Research Area
Advanced Wood Manufacturing
Subject
Saws
Series Number
W-851
Location
Vancouver, British Columbia
Language
English
Abstract
The recent introduction of optimizing technology for cross-cutting boards (chop saw operation) has raised questions about the merits of this technology versus conventional manual systems in the British Columbia remanufacturing sector. A review of the existing technology available to chop lumber (both manual and computerized) was undertaken. A total of 30 remanufacturing plants were visited. Background material was obtained from journal articles and literature from suppliers. The relative merits of the systems in use are discussed.
Saws
Documents
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Application of ultrasonics and a slope of grain indicator to detection of compression wood in lumber

https://library.fpinnovations.ca/en/permalink/fpipub1086
Author
Hamm, E.A.
Lum, Conroy
Date
July 1991
Edition
37493
Material Type
Research report
Field
Wood Manufacturing & Digitalization
Author
Hamm, E.A.
Lum, Conroy
Contributor
Science Council of British Columbia.
Date
July 1991
Edition
37493
Material Type
Research report
Physical Description
39 p.
Sector
Wood Products
Field
Wood Manufacturing & Digitalization
Research Area
Advanced Wood Manufacturing
Subject
Wood
Series Number
W-1574
Location
Vancouver, British Columbia
Language
English
Abstract
Western hemlock is a species that is highly susceptible to compression wood (CW) formation, an abnormal wood tissue that forms on the under side of leaning tree stems and branches. When lumber cut from logs containing CW is dried, the CW shrinks approximately 10 times normal in the parallel to grain direction, resulting in degrade, at times severe, due to warp in the form of crook and bow. In this project a technique using an ultrasonic materials evaluation system (UME) was tested for its ability to detect CW. Since stress wave velocity, in addition to being dependent on elastic properties and material density, is also a function of growth ring orientation, a slope of grain indicator was evaluated for its ability to measure growth ring orientation, to be used in conjuction with the UME.
Compression wood
Documents
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Accelerated aging and outdoor weathering of aspen waferboard

https://library.fpinnovations.ca/en/permalink/fpipub4743
Author
Alexopoulos, J.
Date
March 1991
Edition
41549
Material Type
Research report
Field
Wood Manufacturing & Digitalization
Author
Alexopoulos, J.
Date
March 1991
Edition
41549
Material Type
Research report
Physical Description
39 p.
Sector
Wood Products
Field
Wood Manufacturing & Digitalization
Research Area
Advanced Wood Manufacturing
Subject
Alberta
Manitoba
Saskatchewan
Waferboards
Utilization
Aspen
Aging
Series Number
Forestry Canada No. 1
E-1235
Location
Ottawa, Ontario
Language
English
Abstract
Waferboard
Aspen - Utilization
Waferboard - Aging
Documents
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Comment mener une etude sur le delignage et l'eboutage

https://library.fpinnovations.ca/en/permalink/fpipub2182
Author
Tropper, William A.
Corneau, Yvon C.
Date
March 1991
Edition
38725
Material Type
Research report
Field
Wood Manufacturing & Digitalization
Author
Tropper, William A.
Corneau, Yvon C.
Date
March 1991
Edition
38725
Material Type
Research report
Physical Description
32 p.
Sector
Wood Products
Field
Wood Manufacturing & Digitalization
Research Area
Advanced Wood Manufacturing
Subject
Edging
Trimming
Series Number
E-2258
Location
Ottawa, Ontario
Language
French
Abstract
Etude
Delignage
l'Eboutage
Documents
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Application de la vision artificielle dans les scieries europeennes : un rapport de voyage prepare pour le Conseil national de recherches du Canada (Mai 1988)

https://library.fpinnovations.ca/en/permalink/fpipub5636
Author
Middleton, G.R.
Munro, B.D.
Morin, M.
Date
January 1991
Edition
38128
Material Type
Research report
Field
Wood Manufacturing & Digitalization
Author
Middleton, G.R.
Munro, B.D.
Morin, M.
Date
January 1991
Edition
38128
Material Type
Research report
Physical Description
21 p.
Sector
Wood Products
Field
Wood Manufacturing & Digitalization
Research Area
Digitalization
Subject
Saw mills
Efficiency
Automatic control
Series Number
E-402
Location
Ottawa, Ontario
Language
French
Abstract
Sawmilling - Efficiency
Sawmills - Automation
Sawmills - Europe
Documents
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Facteurs influant sur la precision de la lecture du degre d'humidite d'un hygrometre a usage continu (Mars 1989)

https://library.fpinnovations.ca/en/permalink/fpipub5647
Author
Garrahan, Peter A.
Pfaff, Frank
Morin, M.
Date
March 1991
Edition
38439
Material Type
Research report
Field
Wood Manufacturing & Digitalization
Author
Garrahan, Peter A.
Pfaff, Frank
Morin, M.
Date
March 1991
Edition
38439
Material Type
Research report
Physical Description
30 p.
Sector
Wood Products
Field
Wood Manufacturing & Digitalization
Research Area
Advanced Wood Manufacturing
Subject
Moisture content
Series Number
E-1273
Location
Ottawa, Ontario
Language
French
Abstract
Moisture Determination, Electrical - Accuracy
Moisture Meters (In-line)
Documents
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New concepts in composite research and development : progress report

https://library.fpinnovations.ca/en/permalink/fpipub38113
Author
Hsu, W.H.E.
Date
June 1991
Material Type
Research report
Field
Wood Manufacturing & Digitalization
Author
Hsu, W.H.E.
Date
June 1991
Material Type
Research report
Physical Description
5 p.
Sector
Wood Products
Field
Wood Manufacturing & Digitalization
Research Area
Advanced Wood Manufacturing
Subject
Research
Series Number
3843M414
E-375
Location
Ottawa, Ontario
Language
English
Abstract
To explore new concepts and develop new technologies in composite products
Research & Development
New Concepts
Documents
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Properties of waferboard/osb manufactured from alternate and/or mixed species : a literature review

https://library.fpinnovations.ca/en/permalink/fpipub38413
Author
Brunette, Gilles G.
Date
March 1991
Material Type
Research report
Field
Wood Manufacturing & Digitalization
Author
Brunette, Gilles G.
Date
March 1991
Material Type
Research report
Physical Description
25 p.
Sector
Wood Products
Field
Wood Manufacturing & Digitalization
Research Area
Advanced Wood Manufacturing
Subject
Waferboards
Oriented strandboard
Series Number
Forestry Canada No. 52
3815M343
E-1232
Location
Ottawa, Ontario
Language
English
Abstract
Waferboard
OSB - Production
Mixed Species
Documents
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Effect of preservative treatment on steam-press stabilized waferboard

https://library.fpinnovations.ca/en/permalink/fpipub38414
Author
Pfaff, Frank
Date
March 1991
Material Type
Research report
Field
Wood Manufacturing & Digitalization
Author
Pfaff, Frank
Date
March 1991
Material Type
Research report
Physical Description
14 p.
Sector
Wood Products
Field
Wood Manufacturing & Digitalization
Research Area
Advanced Wood Manufacturing
Subject
Waferboards
Treatment
Steam
Pressing
Preservatives
Series Number
Forestry Canada No. 2
3810M217
E-1233
Location
Ottawa, Ontario
Language
English
Abstract
Waferboard
Steam pressing
Preservative Treatment
Documents
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28 records – page 1 of 2.