The Screw Extrusion Additive Manufacturing (SEAM) process is reshaping the production of plastic structures. Developed by Fraunhofer IWU, SEAM is a fast, granule-based 3D printing technology. Its potential is showcased in projects like the optimization of space and weight for police vehicle shelving and the construction of frames for electric cargo scooters.
For instance, a 3D printed rear shelf for the Mercedes Vito, created using SEAM, can save up to 26.5 kilograms while maintaining its load capacity, crucial for accommodating heavy police equipment. In the DynaLight project, a SEAM-printed plastic frame for the Innvelo Cargo-Scooter offers a weight reduction of 10% and cost savings, without compromising on safety or functionality.
SEAM operates at speeds eight times faster than traditional 3D printing methods and significantly reduces production costs by using standard plastic granules, which are up to 200 times cheaper than the filaments used in conventional FDM processes. Moreover, SEAM supports the circular economy by allowing for the utilization of recycled thermoplastic granules, turning materials such as used plastic bottles into durable, load-bearing structures.
The integration of SEAM technology into the production of essential components for transportation indicates a shift towards more sustainable and efficient manufacturing practices that do not compromise on strength.
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