The review summarizes developments in the United States, Canada, Great Britain, Sweden, Germany, and Japan. Urea resins are the most widely used wood glues. Melamine resins are used in the United States as fortifiers of urea resins where as in Europe pure melamine is used for severe service such as boats. Phenolic resins appear to be staging a comeback in the United States. Contact adhesives are used in furniture plants and other conveyorized systems where rapid bonding is needed. A reduction in the size of interior plywood test specimens has been made and the number of cycles reduced from 10 down to 3. The Southern Pine Inspection Bureau is currently developing standards for glued wood products of southern pine.
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