| 摘要 |
<p>A flat wall panel at least substantially made of cellulose material, a special feature being the fact that the wall panel is at least substantially made of layers (2) of paper/cardboard, each layer at least substantially being made up of a corrugated sublayer and a flat sublayer provided on one side thereof, which layers of paper/cardboard are interconnected via an adhesive applied to the corrugations of the corrugated sublayers, wherein the wall panel is impregnated, in particular with a resinous material, and wherein at least one strengthening layer (3) having a greater elasticity modulus than the layers (2) of paper/cardboard is provided, which strengthening layer (3) is connected to a layer (2) of paper/cardboard on one side of the wall panel via an adhesive. <IMAGE></p> |
