Method for manufacturing sandwich composite parts of pressed two-dimensional or three-dimensional shapes and such composite parts

摘要

a sandwich composite part having at least one structured core layer made of a thermoplastic material having two opposing core layer surfaces and adhesively bonded respectively directly or indirectly to the thermoplastic core layer and having a pressed two-dimensional or three-dimensional shape; A method for manufacturing a sandwich composite part of that kind is described. Sandwich composite parts are also described. The invention comprises the steps of: heating a sandwich semifinished product of flat shape by means of an infrared radiation heating process, wherein at least the first pressing mold halves are spaced such that the sandwich semifinished product is in surface contact with one of the two pressing mold halves at least in its area. Heating into a pressing tool comprising at least two pressing mold halves mounted movably relative to each other along a spatial direction, the at least two pressing mold halves comprising at least two pressing mold segments mounted movably relative to each other along a direction conveying the flat sandwich semi-finished product, the sandwich semi-finished product, until a first minimum gap corresponding to the maximum thickness allocable to the pre-formed sandwich semi-finished product is reached between the first pressing mold segment and the other pressing mold halves surface contact with the two pressing mold halves in at least its area so that the first pressing mold segment advances each other pressing mold segment in the direction of movement, the area being brought into contact with one of the two cover surfaces, the other moving the two pressing mold halves towards each other along the spatial direction, in order to pre-press the sandwich semi-finished product together with the pressing mold halves in two or three dimensions, the first pressing mold segment and/or by means of a contact cooling process stabilizing the pre-formed sandwich semi-finished product in the area contacted by the other pressing mold halves, and - the first pressing mold segment is placed against the other pressing mold halves, the area of the pre-formed sandwich semi-finished product and the forming end the spacing is greater than the first minimum spacing to contact the region and to reach a second minimum spacing between each other pressing mold segment and the other pressing mold halves to obtain a sandwich composite part having a pressed two-dimensional or three-dimensional shape. While selected to be small, the combination of the steps of biasing each other pressing mold segment of the first pressing mold half in a spatial direction against the other pressing mold half is specified. do it with a jin