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Optimization of steam injection pressing for veneer panel products

https://library.fpinnovations.ca/en/permalink/fpipub37445
Author
Andersen, Axel W.
Troughton, G.E.
Date
April 1997
Material Type
Research report
Field
Wood Manufacturing & Digitalization
OF STEAM INJECTION PRESSING FOR VENEER PANEL PRODUCTS by A Andersen and G. Troughton April 1997
Author
Andersen, Axel W.
Troughton, G.E.
Date
April 1997
Material Type
Research report
Physical Description
15 p.
Sector
Wood Products
Field
Wood Manufacturing & Digitalization
Research Area
Advanced Wood Manufacturing
Subject
Veneer manufacturing
Veneer
Pressing
Plywood manufacture
Plywood
Panels
Laminate product
Series Number
Project No. 1070
W-1404
Location
Vancouver, British Columbia
Language
English
Abstract
Experiments were conducted to evaluate steam-injection pressing of plywood and LVL using saturated and superheated steam conditions. Three steam-injection times of one, two and three minutes were used to prepare 7-ply plywood and steam-injection times of three, five, seven, and nine minutes were used to prepare LVL. The results showed optimum pressing times were achieved with the steam-injection times of one and two minutes for the 7-ply plywood and seven minutes was found to be an optimum steam-injection time for LVL. All the panels prepared under a variety of steam conditions exhibited excellent bond quality and the average % wood failure was greater than 80% in all cases. For the preparation of the 7-ply plywood and LVL, using the optimum steam-injection times for both superheated and saturated steam conditions, the pressing time was reduced by over 30% compared to conventional platen heating. An economic analysis of return on investment for thick plywood products and LVL shows the pay-back period for retrofitting an existing plywood or LVL press for steam injection is less than three months.
Lumber, Laminated veneer - Pressing
Lumber, Laminated veneer - Manufacture
Veneers - Pressing
Veneers - Manufacture
Plywood - Panels - Pressing
Plywood - Manufacture
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