From April 8 through April 10, 2025, ARBURGadditive will be presenting its portfolio for additive manufacturing (AM) at stand no. 2308 in Detroit, Michigan. At RAPID + TCT, North America's premier event for AM and industrial 3D printing, the centerpiece will be a Freeformer 750-3X in a high-temperature version, which can process Ultem 9085 and PEAK as original granulate, for example. In addition, numerous components will demonstrate the wide range of applications, including 3D-printed light switches as spare parts for the Austrian Federal Railways (ÖBB), TPU-based knee implants as cartilage replacements and multi-material grippers for robotic systems.

Freeformer 750-3X in high-temperature version

A high-temperature version of the Freeformer 750-3X will be presented, which can additively manufacture sophisticated functional components from a wide range of different plastic granulates. The build chamber can be tempered to 200° C and plasticizing takes place at up to 450° C. The high-end machine has three discharge units so that even complex geometries and functional multi-material combinations with support material can be realized. This industrial 3D printer can be used to additively manufacture and customize larger functional components or small series quickly and flexibly using the APF process.

Wide range of materials

Plastic granules with specific approvals and certifications for applications in the medical, electronics, mobility and aviation sectors, for example, can also be processed. These include Ultem 9085, LMPEAK and PEEK. Another new addition to the APF material portfolio is Grilamid TR 90, an amorphous PA12 material approved for food and drinking water, which ARBURGadditive has made "3D printable" in cooperation with Ems Chemie. In addition, break-away support structures made from Ultem 9085, for example, can be shredded and reused several times in the form of flakes.

Spare parts and operating resources "on demand"

A major advantage of AM is the ability to produce spare parts where and when they are needed. As a practical example, light switches made of flame-retardant PC/ABS compound are shown, which the Austrian Federal Railways (ÖBB) has produced as required for its night trains using a Freeformer. The Freeformer is also suitable for the fast and cost-effective production of operating equipment and end-of-arm tools (EOAT). The production of plant pots at Osko shows how 3D printing and automated injection molding processes complement each other perfectly: The injection-molded pots are handled gently using special packaging automation with 3D-printed grippers that are precisely adapted to the product. The sturdy black gripper centerpiece made of fiber-reinforced plastic is two to three times lighter and significantly more cost-effective than aluminum. The four white gripper rings in a hard/soft combination were produced using the APF process. The soft gripper part is "inflated" with compressed air, thereby fixing the molded part for removal from the mold.

Innovative solutions for medical technology

The Freeformer is also particularly suitable for use in cleanrooms and innovative applications in medical technology. Typical products are resorbable implants, breast prostheses or medical devices and aids. At RAPID + TCT 2025, examples of components that will be presented include nose and ear prostheses made from sterilizable TPE (TM5 Med). A new application idea is the "iKnee" — a patient-specific implant based on medical TPU that can be inserted into the knee as a minimally invasive cartilage replacement. A customer realizes hollow medical valve bodies on the inside with a Freeformer 750-3X, which produces these components in an airtight and resilient multi-material combination of PP and TPE.

The Freeformer is suitable for new application ideas in medical technology. These include the "iKnee" - a patient-specific implant based on medical TPU that can be inserted into the knee as a minimally invasive cartilage replacement. Source: ARBURGThe Freeformer is suitable for new application ideas in medical technology. These include the "iKnee" - a patient-specific implant based on medical TPU that can be inserted into the knee as a minimally invasive cartilage replacement. Source: ARBURG

Seamless traceability and documentation

An indispensable prerequisite for the use of additively manufactured functional components in safety-relevant areas is a reproducible and reliable AM process. For patient-specific implants or safety-relevant components in airplanes, for example, it is imperative that the production parameters for each individual component can be fully documented and traced. Arburg offers the "ProcessLog" customer portal app for this purpose. This allows a wide range of process and build order data from APF components to be clearly visualized and documented. This ensures transparency, high part quality and can significantly reduce rejects and error rates.

To contact the author of this article, email GlobalSpeceditors@globalspec.com