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1214 records – page 1 of 61.

Canadian waferboard properties 1979

https://library.fpinnovations.ca/en/permalink/fpipub2644
Author
Jessome, A.P.
Date
January 1979
Edition
39238
Material Type
Research report
Field
Wood Manufacturing & Digitalization
Author
Jessome, A.P.
Date
January 1979
Edition
39238
Material Type
Research report
Physical Description
38 p.
Sector
Wood Products
Field
Wood Manufacturing & Digitalization
Research Area
Advanced Wood Manufacturing
Subject
Waferboard properties
Waferboards
Series Number
FCC technical report 523E
E-4549
Location
Ottawa, Ontario
Language
English
Abstract
Waferboard - Properties
Documents

E4549pdf

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New adhesives for aspen poplar plywood : kraft black liquor and phenol-formaldehyde resin mixtures

https://library.fpinnovations.ca/en/permalink/fpipub5656
Author
Clermont, Louis Philippe
Manery, N.
Date
1979
Edition
38565
Material Type
Research report
Field
Wood Manufacturing & Digitalization
Author
Clermont, Louis Philippe
Manery, N.
Date
1979
Edition
38565
Material Type
Research report
Physical Description
22 p.
Sector
Wood Products
Field
Wood Manufacturing & Digitalization
Research Area
Advanced Wood Manufacturing
Subject
Resin
Populus
Plywood
Aspen
Adhesives
Location
Ottawa, Ontario
Language
English
Abstract
Black liquiors from kraft pulping and as well as a purified kraft lignin were reacted with formaldehyde over the temperature range 30-70C. The activation energy was about 12.9 Kcal per mole. They were also heat treated to "activate" the lignin and some were also reacted with formaldehyde or furfuraldehyde. These treated solutions were then mixed with phenolformaldehyde (PF) resols and used as plywood adhesives. They were first used in suspension at pH 5.3-5.5 with an acid-curing PF resin. This method proved unsatisfactory. When used as solutions mixed with polymethylophenol resols at solids content varying from 40 to 60 per cent of total solids (resol solids plus black liquor solids) and pH about 12.0, good bonding was obtained with either crude or methylolated black liquor or kraft lignin solutions on 3/8 inch (9.6mm) aspen poplar plywood pressed at 350F (177C) fro 5 minutes and 150 per square inch (1034 kPa). Phenolic resin requirements were 40 to 56.5 percent of the amount required when pure PF is used.
Adhesives
Plywood
Aspen
Poplar
Resins
Documents
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Waferboards from hybrid poplar using bark-modified pf resin as binder : report

https://library.fpinnovations.ca/en/permalink/fpipub5669
Author
Clermont, Louis Philippe
Manery, N.
Date
1979
Edition
38741
Material Type
Research report
Field
Wood Manufacturing & Digitalization
Author
Clermont, Louis Philippe
Manery, N.
Date
1979
Edition
38741
Material Type
Research report
Physical Description
9 p.
Sector
Wood Products
Field
Wood Manufacturing & Digitalization
Research Area
Advanced Wood Manufacturing
Subject
Waferboards
Resin
Populus
Hybrid
Bark
Location
Ottawa, Ontario
Language
English
Abstract
Waferboards were made from 5 and 9 year old hybrid poplars, using laboratory prepared wafers. The binder was a powder consisting of a mixture of phenol-formaldehyde (PF) resin and comminuted hybrid poplar bark in equal weights. Only 1.25% PF resin was used based on weight of dry wood. These boards had bending strength and internal bond strength much in excess of the minimum required by Canadian Standards. Another binder was used composed of white spruce tannin, hybrid poplar bark and PF. This amount of PF based on dry wood was 0.5%. this mixture also gave strong boards, both dry and wet, at densities of 42 pounds per cubic foot.
Waferboards
Hybrid poplar
Bark-Modified PF Resin
Documents
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A new method of binding lignocellulosic materials with ammonimum bases spent sulfite liquor

https://library.fpinnovations.ca/en/permalink/fpipub38742
Author
Shen, K.C.
Date
1979
Material Type
Research report
Field
Wood Manufacturing & Digitalization
Author
Shen, K.C.
Date
1979
Material Type
Research report
Physical Description
28 p.
Sector
Wood Products
Field
Wood Manufacturing & Digitalization
Research Area
Advanced Wood Manufacturing
Subject
Materials
Binders
Location
Ottawa, Ontario
Language
English
Abstract
Lignocellulosic Materials
Binding
Ammonium
Sulfite
Liquor
Documents
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Energy recovery systems for kiln drying : product and process development

https://library.fpinnovations.ca/en/permalink/fpipub38743
Contributor
Forintek Canada Corp.
Date
1979
Material Type
Research report
Field
Wood Manufacturing & Digitalization
Contributor
Forintek Canada Corp.
Date
1979
Material Type
Research report
Physical Description
9 p.
Sector
Wood Products
Field
Wood Manufacturing & Digitalization
Research Area
Advanced Wood Manufacturing
Subject
Recovery
Drying
Kilns
Location
Ottawa, Ontario
Language
English
Abstract
Kiln drying
Energy recovery
Documents
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Determination of methods for increasing both yield and product value when converting low grade hardwoods to solid products

https://library.fpinnovations.ca/en/permalink/fpipub38525
Contributor
Forintek Canada Corp.
Date
1979
Material Type
Research report
Field
Wood Manufacturing & Digitalization
Contributor
Forintek Canada Corp.
Date
1979
Material Type
Research report
Physical Description
1 v.
Sector
Wood Products
Field
Wood Manufacturing & Digitalization
Research Area
Advanced Wood Manufacturing
Subject
Yield
Value added
Sawing
Processing
Patterns
Hardwoods
Location
Ottawa, Ontario
Language
English
Abstract
Four-foot hard maple bolts, ranging in diameter from 6 to 16 inches, were produced from pulp wood and sawlogs. The bolts were live-sawn into 1-inch boards to identify the coordinates of each board defect in order to mathematically reconstruct each bolt for simulated sawing. The optimum bolt values were obtained by "computer sawing" the bolt models several times into dimension stock, squares or pallet stock using three sawing patterns; live, around and cant sawing. In the simulated sawing of the actual and theoretical bolts, live sawing consistently resulted in the highest product value. The only exception was for bolts containing a large amount of discoloured wood. In these cases, around and cant sawing performed better than live sawing. In general, liver sawing produced the highest product value for the following reasons; the production of wider boards allows a greater resawing flexibility, fewer saw cuts with less kerf loss and the production of fewer slabs. In-plant studies were conducted to determine the effect of the sawing pattern on productivity. Live sawing increased productivity by 18% for small diameter bolts and up to 30% for larger diameter bolts over the other sawing patterns. While multi-pass systerms may be suitable for the larger, higher quality bolts, it is doubtful that such a system would be viable processing small diameter material down to 6 inches. In processing smaller diameter bolts, it is necessary to have a single-pass system with high productivity to offset the lower quality and value of this material.
Lumber Processing
Hardwoods
Yield
Value
Dimension stock
Sawing Patterns
Defect detection
Documents
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Waferboard from single and mixed species : waferboard improvement : technical report

https://library.fpinnovations.ca/en/permalink/fpipub38746
Contributor
Forintek Canada Corp.
Date
June 1979
Material Type
Research report
Field
Wood Manufacturing & Digitalization
Contributor
Forintek Canada Corp.
Date
June 1979
Material Type
Research report
Physical Description
11 p.
Sector
Wood Products
Field
Wood Manufacturing & Digitalization
Research Area
Advanced Wood Manufacturing
Subject
Waferboards
Location
Ottawa, Ontario
Language
English
Abstract
Waferboard
Single Species
Mixed Species
Documents
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Statistics applied to wood composites study

https://library.fpinnovations.ca/en/permalink/fpipub38790
Author
Hsu, W.H.E.
Date
July 1979
Material Type
Research report
Field
Wood Manufacturing & Digitalization
Author
Hsu, W.H.E.
Date
July 1979
Material Type
Research report
Physical Description
16 p.
Sector
Wood Products
Field
Wood Manufacturing & Digitalization
Research Area
Advanced Wood Manufacturing
Subject
Wood composites
Wood
Studs
Statistics
Statistical analysis
Location
Ottawa, Ontario
Language
English
Abstract
Wood composites
Statistics
Study
Documents
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Composition board from aspen wafers and high density hammermilled particles : waferboard improvement : technical report

https://library.fpinnovations.ca/en/permalink/fpipub38744
Contributor
Forintek Canada Corp.
Date
September 1979
Material Type
Research report
Field
Wood Manufacturing & Digitalization
Contributor
Forintek Canada Corp.
Date
September 1979
Material Type
Research report
Physical Description
3 p.
Sector
Wood Products
Field
Wood Manufacturing & Digitalization
Research Area
Advanced Wood Manufacturing
Subject
Particles
Aspen
Location
Ottawa, Ontario
Language
English
Abstract
Composition Board
Aspen wafers
Hammermilled Particles
Documents
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Waferboard from mixed species : waferboard improvement : technical report

https://library.fpinnovations.ca/en/permalink/fpipub38745
Contributor
Forintek Canada Corp.
Date
September 1979
Material Type
Research report
Field
Wood Manufacturing & Digitalization
Contributor
Forintek Canada Corp.
Date
September 1979
Material Type
Research report
Physical Description
4 p.
Sector
Wood Products
Field
Wood Manufacturing & Digitalization
Research Area
Advanced Wood Manufacturing
Subject
Waferboards
Location
Ottawa, Ontario
Language
English
Abstract
Waferboard
Mixed Species
Documents
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Effect of process variables on waferboard properties : wafer geometry : waferboard improvement : technical report

https://library.fpinnovations.ca/en/permalink/fpipub38749
Contributor
Forintek Canada Corp.
Date
September 1979
Material Type
Research report
Field
Wood Manufacturing & Digitalization
Contributor
Forintek Canada Corp.
Date
September 1979
Material Type
Research report
Physical Description
4 p.
Sector
Wood Products
Field
Wood Manufacturing & Digitalization
Research Area
Advanced Wood Manufacturing
Subject
Waferboard properties
Waferboards
Variables
Process variables
Location
Ottawa, Ontario
Language
English
Abstract
Waferboard
Waferboard - Properties
Waferboard - Improvement
Process Variables
Documents
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Effect of process variables on waferboard properties - press time : waferboard improvement : technical report

https://library.fpinnovations.ca/en/permalink/fpipub38750
Contributor
Forintek Canada Corp.
Date
September 1979
Material Type
Research report
Field
Wood Manufacturing & Digitalization
Contributor
Forintek Canada Corp.
Date
September 1979
Material Type
Research report
Physical Description
3 p.
Sector
Wood Products
Field
Wood Manufacturing & Digitalization
Research Area
Advanced Wood Manufacturing
Subject
Waferboards
Variables
Time
Process variables
Location
Ottawa, Ontario
Language
English
Abstract
Waferboard
Properties
Improvement
Press Time
Process Variables
Documents
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Compte rendu du colloque sur le sciage

https://library.fpinnovations.ca/en/permalink/fpipub38210
Contributor
Forintek Canada Corp.
Date
September 1979
Material Type
Research report
Field
Wood Manufacturing & Digitalization
Contributor
Forintek Canada Corp.
Date
September 1979
Material Type
Research report
Physical Description
120 p.
Sector
Wood Products
Field
Wood Manufacturing & Digitalization
Research Area
Advanced Wood Manufacturing
Subject
Studs
Saw mills
Series Number
Special publication SP-502F
Location
Ottawa, Ontario
Language
French
Abstract
Sawmilling - Study and Teaching
Documents
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Fingerjointing unseasoned, rough western red cedar lumber using the WFPL method.

https://library.fpinnovations.ca/en/permalink/fpipub5454
Author
Troughton, G.E.
Chow, S.
Date
October 1979
Edition
36983
Material Type
Research report
Field
Wood Manufacturing & Digitalization
Author
Troughton, G.E.
Chow, S.
Date
October 1979
Edition
36983
Material Type
Research report
Physical Description
4 p.
Sector
Wood Products
Field
Wood Manufacturing & Digitalization
Research Area
Advanced Wood Manufacturing
Subject
Utilization
Thuja plicata
Siding
Joints
Costs
Series Number
Technical Report No. 11
W-147
Location
Vancouver, British Columbia
Language
English
Abstract
Thuja plicata - Utilization
Glued joints - Finger - Cost
Siding
Documents
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Yield and productivity in processing tree-length softwoods: mills in Quebec

https://library.fpinnovations.ca/en/permalink/fpipub5638
Author
Pnevmaticos, S.M.
Corneau, Yvon C.
Kerr, R.C.
Date
January 1980
Edition
38199
Material Type
Research report
Field
Wood Manufacturing & Digitalization
Author
Pnevmaticos, S.M.
Corneau, Yvon C.
Kerr, R.C.
Date
January 1980
Edition
38199
Material Type
Research report
Physical Description
11 p.
Sector
Wood Products
Field
Wood Manufacturing & Digitalization
Research Area
Advanced Wood Manufacturing
Subject
Yield
Softwoods
Saw mills
Quebec
Series Number
FCC technical report TR507E
E-698
Location
Ottawa, Ontario
Language
English
Abstract
Sawmills - Quebec
Softwoods - Yield
Lumber - Production
Documents
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An integrated model for the technical and economic evaluation of a biomass conversion process

https://library.fpinnovations.ca/en/permalink/fpipub5668
Author
Nguyen, Q.A.
Douglas, L.J.
Schuler, A.T.
Saddler, J.N.
Date
January 1980
Edition
38729
Material Type
Research report
Field
Wood Manufacturing & Digitalization
Author
Nguyen, Q.A.
Douglas, L.J.
Schuler, A.T.
Saddler, J.N.
Date
January 1980
Edition
38729
Material Type
Research report
Physical Description
15 p.
Sector
Wood Products
Field
Wood Manufacturing & Digitalization
Research Area
Advanced Wood Manufacturing
Subject
Biomass
Location
Ottawa, Ontario
Language
English
Abstract
Integrated Model
Biomass Conversion Process
Technical Evaluation
Economic Evaluation
Documents
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Use of methylolated acidified kraft black liquor with U-F adhesive for manufacture of fire retardant plywood

https://library.fpinnovations.ca/en/permalink/fpipub38345
Author
Shen, K.C.
Shields, J.A.
Date
January 1980
Material Type
Research report
Field
Wood Manufacturing & Digitalization
Author
Shen, K.C.
Shields, J.A.
Date
January 1980
Material Type
Research report
Physical Description
11 p.
Sector
Wood Products
Field
Wood Manufacturing & Digitalization
Research Area
Advanced Wood Manufacturing
Subject
Research
Plywood
Materials
Lignin
Adhesives
Series Number
CFS project 44/1980-81
60151
E-1098
Location
Ottawa, Ontario
Language
English
Abstract
Plywood - Fire Research
Adhesives - Kraft lignin
Fire Resistant Materials - Plywood
Documents
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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
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
Documents
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Cutting wood by means of knives

https://library.fpinnovations.ca/en/permalink/fpipub38616
Contributor
Forintek Canada Corp.
Date
January 1980
Material Type
Research report
Field
Wood Manufacturing & Digitalization
Contributor
Forintek Canada Corp.
Date
January 1980
Material Type
Research report
Physical Description
41 p.
Sector
Wood Products
Field
Wood Manufacturing & Digitalization
Research Area
Advanced Wood Manufacturing
Subject
Tension
Stresses
Pressure
Location
Ottawa, Ontario
Language
English
Abstract
Elimination of saw kerf through the compression slicing process has initiated research into the optimization of the compression slicing parameters. Five of these parameters have been selected for study in the 1979-1980 federal fiscal year, through a contract given to Forintek Canada Corp. by Environment Canada. These parameters are the following: 1) Find an alternative to tires or pads for lateral pressuriza tion, 2) Study knife profile to reduce checking damage, 3) Study knife tensioning to reduce checking damage, 4) Study methods of reducing knife friction, 5) Study the dustribution of stresses in the knife when tensioning and slicing. Following is a detailed description of the work done during the 1979-1980 federal fiscal year on each of these compression slicing parameters.
Lateral Pressure
Knife Profile
Knife Tension
Knife Friction
Knife Stress
Documents
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Producing better-quality, low-cost waferboard

https://library.fpinnovations.ca/en/permalink/fpipub38528
Contributor
Forintek Canada Corp.
Date
January 1980
Material Type
Research report
Field
Wood Manufacturing & Digitalization
Contributor
Forintek Canada Corp.
Date
January 1980
Material Type
Research report
Physical Description
18 p.
Sector
Wood Products
Field
Wood Manufacturing & Digitalization
Research Area
Advanced Wood Manufacturing
Subject
Waferboards
Quality control
Qualitative analysis
Series Number
Forestry Canada no. 42
CFS contract 1980-81
E-1520
Location
Ottawa, Ontario
Language
English
Abstract
Overall properties of poplar waferboard can be considerably upgraded by the massive use of an inexpensive resin binder derived form ammonium-based spent sulphite liquor (SSL). Further improvement on waferboard quality can be achieved by the combination of higher resin content and thinner wafers. Low-density waferboard also can be produced to meet CSA 0188 requirements by using aligned wafers. This inexpensive SSL binder, however, requires a longer press time and prefers a higher platen temperature to cure. A new waferboard plant, designed and built to fully exploit both technical and economical advantages of this binder system, would be ideal. For some existing waferboard plants it may be necessary to slightly modify their production line in order to adopt this new binder system. Great savings on resin cost can be realized by substituting the expensive petrochemical-based phenolic resin with the renewable and inexpensive sulphite liquor binder. Economically and technically speaking it is entirely possible to produce a new type of better waferboard at a lower cost.
Waferboard - Manufacture - Quality Control
Documents
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1214 records – page 1 of 61.