Defects of Chinese Plywood and Their Causes: Structural Defects and Appearance Defects Glue strength defect Low bonding strength The bonding strength of plywood is lower than the specified value of the standard. The reason is that the quality of adhesive is poor; The hot pressing conditions are not well controlled, such as low hot pressing temperature, insufficient pressure or short …

Analysis and Control of Common Quality Defects of Plywood in China At present, China is a big plywood exporter and the largest plywood producer in the world. However, on the one hand, China’s plywood products are frequently squeezed by foreign trade barriers, on the other hand, they are impacted by international advanced productive forces, facing huge challenges and threats from …

1、 Twisiting or Warpping caused by water content difference in some internal areas. In the production of plywood, for example, the chips of particle board and the fibers of medium density fiberboard are not evenly dried in some areas, or are not evenly distributed in the whole process of glue application. The veneer coating is not symmetrical in plywood production. There …