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Computer programs for improved quality control procedures in plywood manufacture : Part II. Batch system measurement of veneer quality

https://library.fpinnovations.ca/en/permalink/fpipub37079
Author
Warren, S.R.
Steiner, P.R.
Walser, D.C.
Date
May 1985
Material Type
Research report
Field
Wood Manufacturing & Digitalization
Author
Warren, S.R.
Steiner, P.R.
Walser, D.C.
Date
May 1985
Material Type
Research report
Physical Description
5 p.
Sector
Wood Products
Field
Wood Manufacturing & Digitalization
Research Area
Advanced Wood Manufacturing
Subject
Veneer
Quality control
Qualitative analysis
Peeling
Series Number
W-291
Location
Vancouver, British Columbia
Language
English
Abstract
Veneers - Peel quality - Computer programming
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Computer programs for improved quality control procedures in plywood manufacture : Part I. On-line veneer thickness

https://library.fpinnovations.ca/en/permalink/fpipub37078
Author
Warren, S.R.
Steiner, P.R.
Walser, D.C.
Date
May 1985
Material Type
Research report
Field
Wood Manufacturing & Digitalization
. In veneer peeling, thickness v a r i a t i o n i s an important factor a f f e c t i n g veneer y i e l d
Author
Warren, S.R.
Steiner, P.R.
Walser, D.C.
Date
May 1985
Material Type
Research report
Physical Description
6 p.
Sector
Wood Products
Field
Wood Manufacturing & Digitalization
Research Area
Advanced Wood Manufacturing
Subject
Veneer
Quality control
Qualitative analysis
Plywood manufacture
Plywood
Peeling
Series Number
W-290
Location
Vancouver, British Columbia
Language
English
Abstract
Plywood - Manufacture - Computer programming
Veneers - Peel quality - Computer programming
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Innovative veneer processing technologies

https://library.fpinnovations.ca/en/permalink/fpipub37668
Author
Dai, Chunping
Wang, Brad J.
Date
September 2003
Material Type
Research report
Field
Wood Manufacturing & Digitalization
productivity, recovery and quality concerning veneer peeling in plywood mills. It was demonstrated that green
Author
Dai, Chunping
Wang, Brad J.
Date
September 2003
Material Type
Research report
Physical Description
34 p.
Sector
Wood Products
Field
Wood Manufacturing & Digitalization
Research Area
Advanced Wood Manufacturing
Subject
Veneer manufacturing
Veneer cutting
Veneer
Scanning electron microscopy
Scanners
Recovery
Quality control
Qualitative analysis
Peeling
Series Number
3250
W-1987
Location
Vancouver, British Columbia
Language
English
Abstract
This report addresses issues about productivity, recovery and quality concerning veneer peeling in plywood mills. It was demonstrated that green veneer can be composed using a stitching technique. The maximum stitching speed was 50 ft/min which was slower than a current veneer composer. Stitched veneer did not have a significant effect on bending properties, but shear strength was slightly reduced which could be caused by the existence of stitching threads between the glueline. The roller bar diameter size had a significant influence on veneer quality. In general, peeling veneer with a 1” diameter roller bar resulted in the smoothest veneer with the most uniform thickness. The veneer thickness and roughness between 1.0” and 2.56” diameter roller bars were significantly different, but the difference in veneer quality between 1.75” and 2.56” diameter roller bars was not significant. Further, the difference in veneer quality between 1.0” and 1.75” diameter roller bars was not significant except for veneer roughness. Knife height also had a significant effect on veneer quality. Setting the knife at the spindle center proved to be the best. Veneer thickness at this setting was consistently closest to the target, and had the smoothest surfaces and smallest lathe checks. Average veneer thickness was lowest as well. While higher or lower settings created rougher veneer, higher settings were more forgiving than lower ones. For best results, the peeling knife should therefore be set at 0.0” to 0.015” above the spindle center. Incisor teeth pattern affected veneer quality. Narrower teeth and a wider gap resulted in better veneer quality in terms of veneer curl-up (flatness) and green and dry veneer thickness variations. However, the effect of incisor teeth patterns on veneer roughness and lathe checks seemed to be negligible. The validation tests revealed that an optimum lathe setting for the smooth roller bar was the following: pitch angle (PA) =89.50, vertical gap (VG)=0.425” and horizontal gap (HG) = 0.1”, and the optimum lathe setting for the incisor bar was the following: PA=90.50, VG=0.388” and HG=0.1” to 0.11” when peeling 1/8-inch veneer. The peeling computer program VPeel® was successfully upgraded to allow users to define profiles of pitch angle and horizontal gap. This feature will help the veneer product industry to define optimum lathe settings.
Recovery - Veneers
Veneers - Peel quality
Veneers - Manufacture
Scanners, Electronic
Veneers - Cutting, Rotary
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Peeling fast-grown, second-growth Douglas-fir : technical report. Part I. Laboratory experiments

https://library.fpinnovations.ca/en/permalink/fpipub37104
Author
Hailey, J.R.T.
Date
July 1982
Material Type
Research report
Field
Wood Manufacturing & Digitalization
Author
Hailey, J.R.T.
Date
July 1982
Material Type
Research report
Physical Description
1 v.
Sector
Wood Products
Field
Wood Manufacturing & Digitalization
Research Area
Advanced Wood Manufacturing
Subject
Pseudotsuga menziesii
Plywood
Veneer manufacturing
Second growth
Peeling
Series Number
W-323
Location
Vancouver, British Columbia
Language
English
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A semi-automatic veneer roughness volume measuring system using a pneumatic technique

https://library.fpinnovations.ca/en/permalink/fpipub36855
Author
Hailey, J.R.T.
Bonac, Thomas
Date
September 1988
Material Type
Research report
Field
Wood Manufacturing & Digitalization
of veneer roughness for veneer peeling requires a rapid, accurate and quantitative measurement. In the past
Author
Hailey, J.R.T.
Bonac, Thomas
Date
September 1988
Material Type
Research report
Physical Description
12 p.
Sector
Wood Products
Field
Wood Manufacturing & Digitalization
Research Area
Advanced Wood Manufacturing
Subject
Veneer cutting
Veneer
Quality control
Qualitative analysis
Peeling
Series Number
W-608
Location
Vancouver, British Columbia
Language
English
Abstract
Veneers - Peel quality
Veneers - Cutting, Rotary
Documents
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