The POLYLINE project achieved to be the first successful implementation of an automated additive manufacturing production line for polymer parts at scale. At the Additive Manufacturing Campus of BMW, the project partners made real 3D printing serial production with high throughput a reality. It is therefore not surprising that after the defined three years’ project time, BMW, DyeMansion, EOS and Grenzebach – four partners of the consortium – draw a very positive balance.

“The successful POLYLINE project shows that an end-to-end automated factory is possible with 3D printing – and this is just the beginning”, says Philipp Kramer, CTO and Co-founder of DyeMansion.
Dr. Blanka Szost-Ouk, Head of Additive Manufacturing, Predevelopment & Planning at BMW Group, adds: “The POLYLINE automated process chain fits into the next generation printers and our standard production requirements, is a system-agnostic solution due to their standardized interfaces. Which is crucial for scaling-up Additive Manufacturing.”
Fabian Krauß, Head of Polymer Systems at EOS, looks ahead: “We have developed this at BMW for the automotive industry and we can now adopt and adjust it to other industries.”
“The main advantages of automation are to increase the productivity of the equipment, to reduce the downtime of the equipment, and to create a safe work environment for the employees”, specifies Oliver Elbert, Head of Additive Manufacturing at Grenzebach.
BMW, the premium automotive manufacturer, has given the project a home in its Additive Manufacturing Campus in Munich and has taken over the coordination of the different project partners.
EOS, the world's leading technology provider in industrial 3D printing of metals and plastics, was responsible for the printing with its EOS P500 that sets a new standard in terms of industrial Additive Manufacturing. It can be fully automated and fully integrated. The level of automation and integration then differs from the use case and can be adjusted specifically to each situation. The machine ensures the highest reliability, the highest level of homogeneity, repeatability, and reproducibility.
As a specialist in the automation of industrial processes, Grenzebach contributed its expertise in the intelligent and safe networking of manufacturing processes to the project. This includes the Exchange P500/4 solution, which is placed directly at the printer and automatically replaces the exchange frame and cools the build jobs in the buffer stations. The automated transport of the exchange frame to the next stations with the secure transport container and an automated guided vehicle (AGV). And the robotic cell with KLT handling and bin-picking robots for further processing and sorting of components. In addition, the joint development of automated hardware and software interfaces suitable for industrial use in all process stations was a central component of the Grenzebach work package.
DyeMansion, the global leader in post-processing solutions for industrial polymer 3D printing, was responsible for delivering the right look and feel for the final application – so all areas of post-processing: cleaning, surfacing, and coloring. DyeMansion’s processes are completely traceable, ensuring consistent quality. The Powershot DUAL Performance fulfills all requirements for physical automation, so it can run batch after batch continuously without the need for an operator to be present.
Together with all other project partners and thanks to the funding by the German Federal Ministry of Education and Research, BMW, DyeMansion, EOS and Grenzebach achieved to develop a next-generation digitalized production line.
Dr. Blanka Szost-Ouk, Head of Additive Manufacturing, Predevelopment & Planning at BMW Group:
“Current printers are fast, soon, they will be even faster. Therefore, logically the cost per part per unit will be cheaper, but printed jobs would have to be changed more frequently. To be human centric we need to put the people in the middle of our process chain and make it effective, cheap, and simply excellent for happy and motivated people.
The POLYLINE automated process chain fits into the next generation printers and our standard production requirements, is a system-agnostic solution due to their standardized interfaces. Which is crucial for scaling-up Additive Manufacturing at the BMW Group.”
Phillip Kramer, CTO & Co-founder of DyeMansion:
“Automation is one of the key drivers in our strategy, making it possible to integrate our systems in automated production lines like POLYLINE. And this is important to reduce cost per part and ensure the right quality throughout the whole production chain.
Enabling serial manufacturing is one of the main reasons why DyeMansion was founded, and that's what our systems are built for, to get post-processing to this level. The Powershot DUAL Performance was built for scale, so it can serve ten or even more printers in the production and therefore make an end-to-end factory possible. The main takeaway here is that an end-to-end automated factory is possible with 3D printing. The successful POLYLINE project shows what's possible and this is just the beginning.”
Fabian Krauß, Head of Polymer Systems at EOS:
“The EOS P 500 sets a new standard in terms of industrial Additive Manufacturing. It can be fully automated and fully integrated. The level of automation and integration then differs from the use case and can be adjusted specific to each situation. The machine ensures highest reliability, the highest level of homogeneity, repeatability, and reproducibility.
Besides a high level of automation and integration, the EOS P 500 provides a superior level of flexibility. It offers different modes of operation and has a one-click mode of operation for shop floor execution as well as an all-access operation for manufacturing engineers.Using industry standard APIs for software connectivity, hardware automation and integration, the EOS P500 can be integrated into industrial environments.”
Oliver Elbert, Head of Additive Manufacturing at Grenzebach:
“The target of the POLYLINE project was to develop a fully automated selective laser sintering production line. As an automation company, our part was to develop the layout of the line, provide the automation equipment for the transport between the different machines, and create the machine interfaces together for our project partners. The main advantages of automation are to increase the productivity of the equipment, to reduce the downtime of the equipment, and to create a safe work environment for the employees.
Automation is essential for serial production to increase the productivity of the equipment and to reduce the cost to become more compatible to the conventional production technology of today.”
www.dyemansion.com

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