Driven by the need for productivity and recovery, rotary veneer peeling for softwood plywood manufacturing has changed from the use of a small 5/8-inch (15.88 mm) diameter roller bar to a big roller bar with diameter ranging from 2.50 to 3.75 inches (63.50 to 95.25 mm). This study focused on the effects of conditioning temperature on veneer quality using a big roller bar. A 4-ft (1.22 m) pilot plant rotary lathe consisting of a 3-inch (76.20 mm) diameter roller bar was used to peel a total of 130 logs. The peeling study was conducted on three commonly used conifers, namely, western white spruce, lodgepole pine and Douglas fir. The laboratory results indicated that increasing log temperature led to increase in veneer surface roughness and thickness variation, but decrease in lathe checks. The optimum log temperatures under the slow-speed laboratory peeling condition were 85–100°F (29–38 °C). Considering knife wear, lathe vibration and fast peeling speed, the optimum peeling temperatures for typical softwood plywood mills were found to be 85–95°F (29–35 °C) for spruce, 95–100°F (35–38 °C) for lodgepole pine, and 110–120°F (43–49 °C) for Douglas fir. These temperatures were significantly lower than 130°F (54 °C) previously suggested based on a small roller bar. The results of this study have been widely implemented by the Canadian softwood plywood industry with confirmed benefits of energy-saving and veneer quality improvement.

在生产力和回收需求的驱动下，用于软木胶合板生产的旋切单板削皮技术已从使用直径为5/8英寸（15.88毫米）的小辊棒变为直径为2.50至3.75英寸的大辊棒（ 63.50至95.25毫米）。这项研究的重点是使用大辊棒调节温度对单板质量的影响。使用由3英寸（76.20毫米）直径的辊棒组成的4英尺（1.22 m）中试工厂旋转车床剥离总共130根原木。剥皮研究是针对三种常用的针叶树进行的，即西部白云杉，黑松和花旗松。实验室结果表明，升高的对数温度导致单板表面粗糙度和厚度变化增加，但车床检查减少。在慢速实验室剥离条件下的最佳对数温度为85–100°F（29–38°C）。考虑到刀具磨损，车床振动和快速剥皮速度，对于典型的软木胶合板工厂，发现最佳的剥皮温度是云杉为85–95°F（29–35°C），95–100°F（35–38°C） ）适用于黑松，而花旗松则适用于110–120°F（43–49°C）。这些温度显着低于先前基于小辊棒的建议的130°F（54°C）。这项研究的结果已被加拿大软木胶合板工业广泛实施，具有节能和改善单板质量的公认优势。对于典型的软木胶合板工厂，最佳的剥皮温度是云杉为85–95°F（29–35°C），黑松木为95–100°F（35–38°C）和110–120°F花旗松（43–49°C）。这些温度显着低于先前基于小辊棒的建议的130°F（54°C）。这项研究的结果已被加拿大软木胶合板工业广泛实施，具有节能和改善单板质量的公认优势。对于典型的软木胶合板工厂，最佳的剥皮温度是云杉为85–95°F（29–35°C），黑松木为95–100°F（35–38°C）和110–120°F花旗松（43–49°C）。这些温度显着低于先前基于小辊棒的建议的130°F（54°C）。这项研究的结果已被加拿大软木胶合板工业广泛实施，具有节能和改善单板质量的公认优势。