An excellent matching of the thermoplastic material to the challenges of discontinuous extrusion in 3D printing (FDM) makes it possible to map macrostructures of different densities in a sole, which in turn are – also selectively – tailored to very individual needs. Thus, soft sole areas with lower filling density can relieve and flow smoothly into another area, which rather firmly supports and stabilizes the foot with higher filling density.
Usually, the Elastollan® types of 85 Shore A (soft) and 95 Shore A (hard) are used in orthopaedic insoles to support the entire skeleton, but also in insoles for sports shoes, where a special load cushioning or support is desirable due to increased footwork. The open grid structure of the material also makes the sole breathable. Through the so-called smoothing, i.e. by the production of flowing, linear transitions between two hardness areas of the sole, unpleasant hard edges are completely avoided, the width of the transition area is customizable. This fully demonstrates the full application flexibility of Elastollan®.