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Avancement des travaux : projet d'optimisation d'une raboteuse : annee 1991-92

https://library.fpinnovations.ca/en/permalink/fpipub2257
Author
LeBlanc, G.
Date
August 1992
Edition
38805
Material Type
Research report
Field
Wood Manufacturing & Digitalization
Author
LeBlanc, G.
Date
August 1992
Edition
38805
Material Type
Research report
Physical Description
21 p.
Sector
Wood Products
Field
Wood Manufacturing & Digitalization
Research Area
Digitalization
Subject
Planers
Planing
Optimization
Series Number
E-2718
Location
Ottawa, Ontario
Language
French
Abstract
Planers - Optimization
Planing
Raboteuse - Optimization
Documents
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Bending strength properties of incised and preservative treated commercial 2 x 4 western softwood lumber

https://library.fpinnovations.ca/en/permalink/fpipub924
Author
Palka, L.C.
Morris, Paul I.
Walser, D.C.
Date
March 1992
Edition
37284
Material Type
Research report
Field
Sustainable Construction
Author
Palka, L.C.
Morris, Paul I.
Walser, D.C.
Date
March 1992
Edition
37284
Material Type
Research report
Physical Description
28 p.
Sector
Wood Products
Field
Sustainable Construction
Research Area
Building Systems
Subject
Preservation
Mechanical properties
Series Number
Forestry Canada No. 4
Contract no. 1712K007
W-937
Location
Vancouver, British Columbia
Language
English
Abstract
This study evaluated the effect of two different incisors followed by chromated copper arsenate pressure treatment on the bending strength and stiffness of No. 2 and better nominal 2 x 4 inch (38 x 89 mm) spruce-pine-fir and hem-fir lumber. The double-density incising method, developed at Forintek, allows SPF to meet the CSA O80 wood preservation standards. The high-speed incisor was developed by Forintek for operation immediately behind the planer in a sawmill to produce a treatable lumber product. The prototype tested here employed two solid rollers to lay down two superimposed patterns of incisions at a density of 17500/m2. Approximately 2900 specimens of SPF and 1200 specimens of hem-fir were sorted into nine and four matched groups, respectively, according to their average flatwise modulus of elasticity values tested in centre point bending. The matched groups were then given various combinations of drying, incising and pressure treatments. Bending strength properties were tested. It was found that kiln-dried SPF and green hem-fir commercial dimension lumber, treated by the above processes, can be safely used for all structural purposes for which preservative treatment is required.
Preservation - Influence on mechanical properties
Preservation - Incising
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Borate preservative for waferboard/OSB siding : progress report

https://library.fpinnovations.ca/en/permalink/fpipub4745
Author
Pfaff, Frank
Date
March 1992
Edition
41551
Material Type
Research report
Field
Sustainable Construction
Author
Pfaff, Frank
Date
March 1992
Edition
41551
Material Type
Research report
Physical Description
1 v.
Sector
Wood Products
Field
Sustainable Construction
Research Area
Advanced Wood Materials
Subject
Flakeboards
Treatment
Steam
Resin
Pressing
Preservatives
Series Number
Forestry Canada No. 1
E-1274
Location
Ottawa, Ontario
Language
English
Abstract
Preservative-Treated Flakeboard
Borate-Compatible Resin
Steam-Injection Pressing
Documents
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Boron wood preservative treatments - progress report

https://library.fpinnovations.ca/en/permalink/fpipub4304
Author
Byrne, Anthony (Tony)
Morris, Paul I.
Date
March 1992
Edition
41069
Material Type
Research report
Field
Sustainable Construction
Author
Byrne, Anthony (Tony)
Morris, Paul I.
Date
March 1992
Edition
41069
Material Type
Research report
Physical Description
2 p.
Sector
Wood Products
Field
Sustainable Construction
Research Area
Advanced Wood Materials
Subject
Preservatives boron
Preservatives
Series Number
Forestry Canada No. 37A
Contract no. 1712K023
W-938
Location
Vancouver, British Columbia
Language
English
Abstract
The objective of the program is to catalyze the development of boron as an environmentally acceptable chemical treatment and improve process technology to produce a boron-treated lumber product. There is a need for low environmental impact wood preservatives, particularly for the residential market. Although the hazards associated with treated wood may be negligible, the public perception of potential hazards may be sufficient to proscribe the future use of the present preservatives. Boron is an environmentally benign preservative which has been used for many years in New Zealand and Australia and has started to be used in the U.S.A. but is not yet used in Canada. There is a potential market for termite-proof wood for southern Ontario and boron promises to be a suitable candidate. Opportunities also exist in overseas markets for boron treated lumber provided that a rapid and cost effective diffusion process can be developed. Western softwoods, which are naturally wet species, particularly lend themselves to diffusion treatments with boron. Despite there being a good body of scientific literature available on borate treatment of wood there is a lack of basic technical knowledge on borate treatment of Canadian woods. This project seeks to address this need.
Preservatives - Boron
Documents
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Chemical analysis development - first of two reports. Analysis for boron in treated wood.

https://library.fpinnovations.ca/en/permalink/fpipub4306
Author
Johnson, E.L.
Ingram, Janet K.
Date
March 1992
Edition
41071
Material Type
Research report
Field
Sustainable Construction
Author
Johnson, E.L.
Ingram, Janet K.
Date
March 1992
Edition
41071
Material Type
Research report
Physical Description
12 p.
Sector
Wood Products
Field
Sustainable Construction
Research Area
Advanced Wood Materials
Subject
Preservatives boron
Preservatives
Analysis
Series Number
Forestry Canada No. 37
Contract no. 1712L022
W-941
Location
Vancouver, British Columbia
Language
English
Abstract
Methods for the analysis of boron in wood were reviewed and one, a method in which base titration of a mannitol/boron complex is done, was chosen for possible routine use. Method parameters were tested and the stages were modified to arrive at a routine which can determine boron content in wood within 5% accuracy. Hot water leaching of chip samples, 2.54 x 2.54 cm x 2 to 3 mm thick, of wood which has been given borate/antisapstain treatment is better than 95% efficient within four hours; this is as efficient as a ten-cycle extraction on a soxhlet apparatus. Using an automatic titrator, analysis for boron is done by titrating a mannitol complex of the boron in the extract. The simplicity, low expense, speed, and accuracy of this routine give it the advantage over several other methods. The aqueous extracts of wood, the mannitol reagent, and secondary components of boron treating formulations can all add to the apparent boron content of the wood sample; these factors are variable but generally total about 8 *g boric acid equivalent per cm2 of wood surface. The method is also suitable for the analysis of boron in heavily (preservative) treated wood.
Preservatives - Boron
Preservatives - Chemical analysis
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La coloration fongique dans les billes de resineaux Canadiens

https://library.fpinnovations.ca/en/permalink/fpipub5915
Author
Clark, Jean E.
Morin, M.
Date
March 1992
Edition
41586
Material Type
Research report
Field
Sustainable Construction
Author
Clark, Jean E.
Morin, M.
Date
March 1992
Edition
41586
Material Type
Research report
Physical Description
33 p.
Sector
Wood Products
Field
Sustainable Construction
Research Area
Advanced Wood Materials
Subject
Stain
Softwoods
Series Number
Forestry Canada No. 35
E-1438
Location
Ottawa, Ontario
Language
French
Abstract
Les taches biologiques sont susceptibles de se developper rapidement dans les billes sensibles aux contraintes de la nature qui sont entreposees a des termperatures elevees, ce qui entraine une baisse de valeur de la bille et du produit. Comme les scieries reclament un approvisionnement constant en matiere premiere et un acces saisonnier au parterre de coupe, il devient indispensable pour elles d'entreposer leurs billes. Dans pareil cas, les champignons de bleuissement peuvent infecter l'aubier de diverses facons : par le biais de l'extremite des billes, de defauts a l'ecorce qui est mise a nu et endommagee lors de la manutention, de dommages causes par les insectes et de fendillements. Par ailleurs, en periode de temps chauds, les champignons peuvent se developper rapidement dans l'aubier et provoquer une tache disgracieuse. Les objectifs de l'etude etaient les suivants : a) determiner l'importance du bleuissement dans les billes canadiennes et la perte de valeur marchande du produit, et b) etudier des methodes eventuelles d'attenuation des taches. Un certain nombre de scieries canadiennes ont repondu a un questionnaire afin de determiner l'amleur du probleme. La revue de l'ensemble des ouvrages publies sur cette question a permis d'etudier les origines de l'infection des billes et les mesures de lutte efficaces mises en oeuvre pour combattre ou enrayer le bleuissement; on a egalement demande aux experts internationaux de nous fournir de l'information sur la situation actuelle dans le monde. Les resultats de l'enquete effectuee dans l'est et dans l'ouest du Canada revelent que le bleuissement des billes, en particulier celles de pin, s'est traduit par une perte de valeur pour 46 des 73 usines, perte qui a pris la forme d'une baisse de qualite du produit, d'occasions commerciales ratees en vue d'ajouter de la valeur au produit et de privation d'avantage de marche la ou le bois net et sans defaut, quioque non exige, est souvent privilegie. Dans la litterature scientifique, le controle des stocks est vu comme une demarche essentielle. Les mesures d'entreposage les plus efficaces tiennent compte des exigences des champignons en matiere de conditions de temperature et d'humidite et d'un apport suffisant d'oxygene. Le stockage en bassin et l'arrosage des billes, qui permettent de maintenir une teneur en humidite elevee et de faibles quantites d'oxygene dans le bois, sont efficaces en vue d'empecher la degradation par les champignons et l'attaque par les insectes. Les recoltes saisonnieres et le traitement des essences vulnerables en saison froide sont egalement jugees des methodes tres efficaces. La lutte a l'aide de produits chimiques anti-tache et le traitemetn des extremites des billes connaissent une efficacite reduite et sont tres rarement utilisees. Meme si elles sont adequatement entreposees, les billes se deterioreront malgre tout avec le temps. Les usines qui envisagent l'entreposage par immersion ou la methode d'arrosage des billes devraient s'informer des reglements relatifs a la pollution et apporter une attention particuliere aux habitats de poisson. Grace a une gestion des stocks et a des mesures preventives d'entreposage dans le cas des billes de qualite elevee, les usines auraient l'occasion d'accroitre leur rendement de production.
Softwoods - Fungal Stains
Bluestain
Documents
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Compte rendu des activites de recherche sur le nematode du pin

https://library.fpinnovations.ca/en/permalink/fpipub5652
Author
Mes-Hartree, M.
Morin, M.
Date
May 1992
Edition
38499
Material Type
Research report
Field
Wood Manufacturing & Digitalization
Author
Mes-Hartree, M.
Morin, M.
Date
May 1992
Edition
38499
Material Type
Research report
Physical Description
5 p.
Sector
Wood Products
Field
Wood Manufacturing & Digitalization
Research Area
Advanced Wood Manufacturing
Subject
Pinus
Series Number
E-1444
Location
Ottawa, Ontario
Language
French
Abstract
Pine Nematodes
Documents
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Considerations in the selection of a conventional or dehumidification drying system

https://library.fpinnovations.ca/en/permalink/fpipub38816
Author
Garrahan, Peter A.
Date
September 1992
Material Type
Research report
Field
Wood Manufacturing & Digitalization
Author
Garrahan, Peter A.
Date
September 1992
Material Type
Research report
Physical Description
6 p.
Sector
Wood Products
Field
Wood Manufacturing & Digitalization
Research Area
Advanced Wood Manufacturing
Subject
Systems
Selection
Drying
Location
Ottawa, Ontario
Language
English
Abstract
Conventional Drying System
Dehumidification Drying System
Considerations
Selection
Documents
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Control of sticker stain in hard maple : summary of laboratory and field tests

https://library.fpinnovations.ca/en/permalink/fpipub38683
Author
Garrahan, Peter A.
Savard, Marc
Cane, D.A.
Date
January 1992
Material Type
Research report
Field
Wood Manufacturing & Digitalization
Author
Garrahan, Peter A.
Savard, Marc
Cane, D.A.
Date
January 1992
Material Type
Research report
Physical Description
1 v.
Sector
Wood Products
Field
Wood Manufacturing & Digitalization
Research Area
Advanced Wood Manufacturing
Subject
Sticker stains
Stain
Laboratories
Series Number
Forestry Canada No. 39a
3712K212
E-1969
Location
Ottawa, Ontario
Language
English
Abstract
Sticker stain
Hard Maple
Laboratory Tests
Field Tests
Documents
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Conversion factors for the forest products industry in Eastern Canada

https://library.fpinnovations.ca/en/permalink/fpipub38456
Author
Kostiuk, Alan P.
Date
March 1992
Material Type
Research report
Field
Wood Manufacturing & Digitalization
Author
Kostiuk, Alan P.
Date
March 1992
Material Type
Research report
Sector
Wood Products
Field
Wood Manufacturing & Digitalization
Research Area
Advanced Wood Manufacturing
Subject
Conversion factors
Yield
Recovery
Series Number
Forestry Canada No. 12
3715K345
E-1322
Location
Ottawa, Ontario
Language
English
Abstract
Forest products industry
Conversion factors
Documents
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73 records – page 1 of 8.