Abstract: The invention relates to a method for producing a programmed shape memory polymer, which assumes a first temporary shape and at least two additional stored thermally activatable shapes, namely at least one second temporary shape and a permanent shape, with the steps of: (a) providing a shape memory polymer which has at least two switching segments (A, B), which through phase segregation each form a switching phase having each a corresponding transition temperature (TtransA, TtransB), (b) deforming the shape memory polymer into a shape corresponding to the first temporary shape at a temperature above the upper transition temperature (TtransA), and (c) cooling to a temperature below the lower transition temperature (TtransB) by fixing the first temporary shape. The method of the invention provides a one-step programming method for a triple-shape plastic material.

Abstract: A method of connecting a metallic bolt to a plastic work piece is shown and described. The object to provide a method which makes possible a reliable connection between metal workpieces on the one hand and plastic workpieces on the other hand is achieved in that a first plastic work piece and a metallic bolt are provided, and in that the bolt is pressed into a surface of the first plastic workpiece, the bolt being rotated during the pressing-in, and the rotational speed of the bolt being selected in such a way that the first plastic workpiece is plasticized, so that the bolt is anchored in the first plastic workpiece in a positive-locking manner after the rotation is stopped.