Fire-resistant oriented strand board material

摘要

Fire-resistant OSB (oriented strand board) material consisting of a middle layer and two outer layers, wherein the layers primarily consist of bonded wood flakes. There are one or more fire-retardant agents in the middle layer and one or both outer layers, and the nature and/or the concentrations of them in the middle layer are different from the nature and/or the concentrations of them in one or both outer layers.