| 摘要 |
Plate equipped with at least one curved edge and manufacturing method for such a plate The method of manufacturing plates equipped with at least one curved edge according to the invention, from an extrudate (11) that is hot-extruded between two sheets (7,8), the whole being then calendared, is in particular remarkable in that two sheets (7,8) of different widths are used and that the material is extruded so as to cover roughly the whole surface of the wider sheet (7) over the edge of narrower sheet (8) on at least one side thus constituting at least one longitudinal edge (17a, 17b) formed by the wider sheet (7) covered only by the extrudate (11), said edge then curving without other interventions, by natural mechanical constraints during manufacturing, so as to be concave on the narrower side of sheet (7). The invention also relates to as such a plate formed from a core in thermoplastic material sandwiched between two sheets (7,8) of which one (8) is narrower, constituting at least one longitudinal edge (17a, 17b) formed by the wider sheet (7) covered only by the thermoplastic material (11), said edge(17a, 17b) being curved so as to be concave on the side of the narrower sheet (8). |
