| 摘要 |
The invention relates to composite formed board used as a construction element for pavements, platforms, terraces, floors, walkways, particularly intended to be used in the open, outside buildings. This invention is an additional invention for the invention of the application No. PL 401233. The composite made of plastic and organic material with a fibrous structure is a foamed mix (3'), with density lower by at least 10%, preferably by at least 20%, than the density of a solid organic-plastic composite (3) made of the same components, while the layer of this foamed mix (3') is bonded permanently and inseparably with a solid plastic layer (10), at least from the side (8) opposite to the homogeneous rubber-polyurethane composite (2), the plastic preferably constituting the top layer (10'), while the thickness of the solid plastic layer (10) is smaller than that of the organic-plastic layer (3'), preferably at least five times smaller, and most preferably at least fifteen times, and it is at least fifteen times smaller than the thickness of the rubber-polyurethane layer (2), most preferably at least twenty-five times smaller. The solid plastic layer (10) may have a grooved structure or an impressed structure, and the concavity (11) directed into the interior of the solid plastic layer (10). The solid plastic layer (10) is preferably bonded with the organic-plastic layer (3') by a co-extrusion joint (12). |
