| abstract |
A molded article 1 produced by extrusion, such as a plastic foam sheet, a plate, a profile body or the like, contains at least 10% by volume of open cells 2, 4 which have a polyhedron-like shape and adjoin one another. The deformation-free opening of the cells is brought about by the increased temperature during the extrusion, in comparison to the extrusion of thermoplastic moldings with a closed-cell structure. Here, webs 3 of cell walls 5, 6, whether they have openings 7 or have no passages, remain intact in terms of design, so that the mechanical strength of the cell structure or the spatial matrix is retained. |