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64 records – page 1 of 7.

Ammonium-based spent sulphite liquor binder optimization for waferboard and particleboard applications

https://library.fpinnovations.ca/en/permalink/fpipub1496
Author
Shen, K.C.
Date
March 1982
Edition
38001
Material Type
Research report
Field
Wood Manufacturing & Digitalization
Author
Shen, K.C.
Date
March 1982
Edition
38001
Material Type
Research report
Physical Description
28 p.
Sector
Wood Products
Field
Wood Manufacturing & Digitalization
Research Area
Advanced Wood Manufacturing
Subject
Wood
Waferboards
Spent sulfite liquors
Spent liquors
Particle boards
Gluing
Adhesives
Series Number
CFS/DSS project no 42/81-82
60-55-161-1
E-25
Location
Ottawa, Ontario
Language
English
Abstract
Adhesion and Adhesives - Wood
Particleboard - Gluing
Waferboard - Gluing
Spent Sulphite Liquor
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Aqueous phenolic dispersions for bonding veneer components

https://library.fpinnovations.ca/en/permalink/fpipub1040
Author
Steiner, P.R.
Clarke, Michael Raymond
Andersen, Axel W.
Date
March 1988
Edition
37427
Material Type
Research report
Field
Wood Manufacturing & Digitalization
and properties of the alkylene car- bonates. Ind. Eng. Chem. 50:767-770. Sleet, G. 1987. High moisture gluing
Author
Steiner, P.R.
Clarke, Michael Raymond
Andersen, Axel W.
Contributor
Canada. Canadian Forest Service.
Date
March 1988
Edition
37427
Material Type
Research report
Physical Description
25 p.
Sector
Wood Products
Field
Wood Manufacturing & Digitalization
Research Area
Advanced Wood Manufacturing
Subject
Phenols
Gluing
Glue
Series Number
CFS No. 25
Contract no. 871812L001
W-1359
Location
Vancouver, British Columbia
Language
English
Abstract
This study relates to technology for tailor-making PF resin with molecular weight and size distributions beyond those now available for commercial processing. Consequently, adhesive mobility and cure speed can be adjusted through use of a two-component resin system comprised of continuous and dispersed phases. Current studies specifically concern two-component alkaline plywood formulations suitable for bonding veneer at 12 plus or minus 2% m.c.
Glue, Phenolic
Gluing - Influence of moisture content
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Aqueous phenolic dispersions for bonding veneer composites. First of two reports

https://library.fpinnovations.ca/en/permalink/fpipub1038
Author
Steiner, P.R.
Clarke, Michael Raymond
Andersen, Axel W.
Date
March 1987
Edition
37425
Material Type
Research report
Field
Wood Manufacturing & Digitalization
Author
Steiner, P.R.
Clarke, Michael Raymond
Andersen, Axel W.
Contributor
Canada. Canadian Forest Service.
Date
March 1987
Edition
37425
Material Type
Research report
Physical Description
23 p.
Sector
Wood Products
Field
Wood Manufacturing & Digitalization
Research Area
Advanced Wood Manufacturing
Subject
Phenols
Gluing
Glue
Series Number
CFS No. 27
Contract no. 021812001
W-1357
Location
Vancouver, British Columbia
Language
English
Abstract
The objectives of this study were to produce and modify phenolic dispersion based adhesives using technology recently developed at Forintek and to further characterize the physical properties and bonding properties of these systems for veneer and composite board applications with emphasis on faster cure speed potential. Data developed in this study indicate opportunities to improve waferboard and plywood PF adhesives in terms of color, cure rate and application properties. Further research work is recommended to improve techniques for producing and characterizing appropriate powder disperson-like formulations for wood bonding.
Glue, Phenolic
Gluing - Influence of moisture content
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Aqueous phenolic dispersions for bonding veneer composites. Supplemental report

https://library.fpinnovations.ca/en/permalink/fpipub1039
Author
Steiner, P.R.
Clarke, Michael Raymond
Andersen, Axel W.
Date
April 1987
Edition
37426
Material Type
Research report
Field
Wood Manufacturing & Digitalization
Author
Steiner, P.R.
Clarke, Michael Raymond
Andersen, Axel W.
Contributor
Canada. Canadian Forest Service.
Date
April 1987
Edition
37426
Material Type
Research report
Physical Description
11 p.
Sector
Wood Products
Field
Wood Manufacturing & Digitalization
Research Area
Advanced Wood Manufacturing
Subject
Phenols
Gluing
Glue
Series Number
CFS No. 27a
Contract no. 021812001
W-1358
Location
Vancouver, British Columbia
Language
English
Abstract
Further data on flow, viscosity-solids and veneer bonding at dry and 11 plus or minus 2% wood m.c. conditions are provided for heated PF powder systems. This information is intended to supplement the main report issued in March 1987.
Glue, Phenolic
Gluing - Influence of moisture content
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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
Scientist Department K. Chan Composites Composites Gluing Technologist Department P. Tarasoff
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
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Aqueous phenolic dispersions for bonding wood composites - progress report

https://library.fpinnovations.ca/en/permalink/fpipub628
Author
Troughton, G.E.
Walser, D.C.
Andersen, Axel W.
Clarke, Michael Raymond
Date
March 1990
Edition
36887
Material Type
Research report
Field
Wood Manufacturing & Digitalization
Author
Troughton, G.E.
Walser, D.C.
Andersen, Axel W.
Clarke, Michael Raymond
Date
March 1990
Edition
36887
Material Type
Research report
Physical Description
6 p.
Sector
Wood Products
Field
Wood Manufacturing & Digitalization
Research Area
Advanced Wood Manufacturing
Subject
Phenols
Materials
Gluing
Glue
Series Number
Forestry Canada No. 34
contract no.1812L005
W-782
Location
Vancouver, British Columbia
Language
English
Abstract
Glue, Phenolic
Gluing
Composite materials
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Assessment of new glue application technology for OSB

https://library.fpinnovations.ca/en/permalink/fpipub1051
Author
Groves, C. Kevin
Troughton, G.E.
Date
June 1997
Edition
37444
Material Type
Research report
Field
Wood Manufacturing & Digitalization
Author
Groves, C. Kevin
Troughton, G.E.
Date
June 1997
Edition
37444
Material Type
Research report
Physical Description
16 p.
Sector
Wood Products
Field
Wood Manufacturing & Digitalization
Research Area
Advanced Wood Manufacturing
Subject
Strandboards
Spraying
Penetration
Oriented strandboard
Orientation
Gluing
Glue
Series Number
Project No. 1074
W-1401
Location
Vancouver, British Columbia
Language
English
Abstract
A pilot plant apparatus was built to electrostatically spray phenolic resin on strands. To evaluate the resin distribution on these strands, an image analysis method was developed. The experimental conditions in this study made it difficult to compare electrostatic treatments to control (non- electrostatic) treatments. Although not statistically significant, there were notable differences between these treatments which indicate that electrostatic resin application may improve panel properties and is therefore worth further investigation. First of all, the electrostatic treatment produced panels with a 10% higher internal bond than the control. Secondly, the resin distribution results show that the electrostatic spray, on average, covered a 30% greater area of the strands than the control even though both treatments applied resin at the 2% resin solids level. Further experiments using alternative test procedures are planned to compare electrostatic treatments to control treatments that simulate industrial conditions.
Glue - Penetration
Oriented strandboard - Gluing - Tests
Gluing - Processes
Spraying
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Assessment of two green gluing processes for finger jointing

https://library.fpinnovations.ca/en/permalink/fpipub5074
Author
Verreault, C.
Date
April 2000
Edition
41921
Material Type
Research report
Field
Sustainable Construction
Forintek Canada Corp. Canadian Forest Service No. 2407 ASSESSMENT OF TWO GREEN GLUING
Author
Verreault, C.
Date
April 2000
Edition
41921
Material Type
Research report
Physical Description
1 v.
Sector
Wood Products
Field
Sustainable Construction
Research Area
Advanced Wood Materials
Subject
Transfer
Pinus
Spruce
Joints
Gluing
Canada
Black spruce
Balsam
Series Number
Canadian Forest Service No. 2407
E-3386
Location
Sainte-Foy, Québec
Language
English
Abstract
Green finger jointing is increasingly becoming a proven possibity with three main technological processes, the New Zealand Greenweld process, the US soybean-based adhesive process and the US soybean-based adhesive process by assessing drying degrade and mechanical performance of green-glued finger-jointed material after drying. The urethane-based adhesive process was studied in a previous project. Overall, we did not observe performance differences between the Greenweld and the soybean-based adhesive processes. This was to be expected since they are both phenol resorcinol formaldehyde types of adhesives. Thus, the process choice should be made based on other considerations than mechanical performance, such as economical or procedure preferences. In comparison with the polyurethane adhesive studied before, it appears obvious that more stress concentration is present at the joint after drying because of the failure modes observed. However, with long term use, this product (the urethane-based adhesive) still needs to be studied because it is less known than the two other phenol-resorcinol-formaldehyde based processes. The results also demonstrate that green finger-jointing material, such as black spruce and balsam fir, could at least be used to produce stud grade lumber.
Forintek Canada Corp. - Report
Finger Joints
Green gluing
Black spruce
Balsam fire
Technology transfer
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Automated wood failure evaluation technology transfer

https://library.fpinnovations.ca/en/permalink/fpipub1075
Author
Andersen, Axel W.
Date
April 1998
Edition
37478
Material Type
Research report
Field
Wood Manufacturing & Digitalization
Author
Andersen, Axel W.
Date
April 1998
Edition
37478
Material Type
Research report
Physical Description
47 p.
Sector
Wood Products
Field
Wood Manufacturing & Digitalization
Research Area
Advanced Wood Manufacturing
Subject
Transfer
Testing
Plywood
Instrumentation
Gluing
Series Number
W-1514
Location
Vancouver, British Columbia
Language
English
Abstract
Wood failure evaluation is the key criterion for predicting the long-term durability of plywood. At present, the conventional visual method for plywood wood failure evaluation is slow and subjective. Evaluations can be influenced by factors such as: room lighting, wood species, sample treatment, and readings from prior samples. An automated wood failure evaluation system using image analysis techniques could potentially be programmed to consider all the variables and respond with consistent wood failure values regardless of the machine operator's experience level. This report describes the results of a six-month study in which a system for automated plywood wood failure determination was compared with conventional visual wood failure evaluation. It was built upon research undertaken in the 1996/97 year in which the feasibility of the approach was initially established. In the research reported previously, a colour optical imaging system was assembled and suitable wood failure algorithms were compiled with promising results. The imaging system was 100 % effective in reproducing sample values. The data were discussed with the project liaisons and a three-month comparison with Canply readings was suggested. In this study, machine evaluation of 4,150 samples was compared with readings of monthly plywood mill quality control samples. The sampling was designed to include all British Columbia plywood mills and all categories of commercial plywood production. The differences in average values for wood failure between human and machine evaluation were found to be less than plus or minus 5% in the majority of cases. In addition, 93 % of ‘set average' readings fell in the plus or minus 10% range of deviation expected of human wood failure readers. Agreement on readings of individual samples within each set was not quite as good with 72% falling in the plus or minus 15% range.
Technology transfer
Plywood - Gluing - Tests
Plywood - Tests - Control instruments
Instruments, Testing
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Automatic plywood wood failure evaluation based on image analysis/image processing

https://library.fpinnovations.ca/en/permalink/fpipub5529
Author
Andersen, Axel W.
Shi, X.
Salahuddin, U.
Zhong, Y.
Date
March 1997
Edition
37443
Material Type
Research report
Field
Wood Manufacturing & Digitalization
Author
Andersen, Axel W.
Shi, X.
Salahuddin, U.
Zhong, Y.
Contributor
Canada. Canadian Forest Service.
Date
March 1997
Edition
37443
Material Type
Research report
Physical Description
32 p.
Sector
Wood Products
Field
Wood Manufacturing & Digitalization
Research Area
Advanced Wood Manufacturing
Subject
Testing
Plywood
Instrumentation
Gluing
Series Number
Canadian Forest Service No. 13;1053
W-1391
Location
Vancouver, British Columbia
Language
English
Abstract
Wood failure evaluation is the key criterion for predicting the long-term durability of plywood. At present, the conventional visual method for plywood wood failure evaluation is slow and subjective. Even experienced evaluators can show significant differences in their evaluations on the same plywood specimen and an individual evaluator can make different wood failure estimates on the same specimen at different times. Differences among evaluators can be as high as 50% for some samples. Evaluations can be influenced by room lighting, the wood species, sample treatment, and readings from prior samples. An automatic wood failure evaluation system using image analysis techniques could potentially be programmed to consider all the variables and respond with consistent wood failure values regardless of the experience level of the machine operator. This report describes the results of a one-year project in which a system for automatic plywood wood failure determination was investigated. A color optical imaging system was assembled and the preliminary work of compiling suitable algorithms was completed with promising results. The imaging system was 100% effective in reproducing individual sample values. Samples were sorted according to plywood type and test method to develop appropriate program algorithms for each category. The wood failure program was then further developed to automatically detect wood species and test method, thus avoiding the need for specimen separation prior to evaluation. Based on nearly 1200 samples in four categories, the differences in average values of wood failure between human evaluation and machine vision were found to be less than plus or minus 5%. In addition, a minimum of 85% of individual machine readings fell in the plus or minus 15% range of deviation expected of human wood failure readers. The imaging system was more accurate for light-colored specimens (i.e., Canadian Softwood Plywood) than darker-colored specimens (i.e., Douglas fir ) and for specimens where resin had been applied by spray. In order to make the imaging system more reliable and robust, the algorithm parameters now need to be fine-tuned based on a larger sample database.
Plywood - Gluing - Tests
Plywood - Tests - Control instruments
Instruments, Testing
Digital imaging
Defects - Detection
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64 records – page 1 of 7.