When we last caught up with Luke Rodgers, senior director of R&D at Jabil (NYSE: JBL), the manufacturing solutions provider was in the process of releasing a new material for powder bed fusion (PBF) that was derived from sequestered carbon monoxide. At RAPID + TCT 2023, the materials scientist was back with a new carbon-capturing polymer for PBF—this time, PLA.
The First PLA for PBF
Speaking to Rodgers at the tradeshow, we learned how this polymer, ubiquitous in material extrusion, introduces new benefits to the world of PBF. Developed in collaboration with NatureWorks, the world’s largest maker of PLA, Jabil’s PLA 3110P combines the printability of this typically corn-starch-based plastic with the high throughput and complexity enabled with PBF. Because Jabil is vertically integrated, it has everything from compounding to cryogenic grinding, allowing partners like NatureWorks to access all of these capabilities from a single supplier.
“We’ve got a bunch of home compostable programs within the company that we’re looking at. And, overall, sustainability is a huge focus within Jabil,” Rodgers said. “We just have a lot of conversations with NatureWorks, and this came out about as a natural collaboration. We have all of the technologies and know-how to create PBF materials and they have all the expertise for making a good PLA resin system.”
At the jump, Jabil has several applications in mind for the material, including vacuum and thermoforming, casting, and as a more sustainable substitute for fossil fuel-based polymers. As for thermoforming, in which a material is heated and shaped around a mold, the material has the compression strength and temperature resistance ideal for manipulating materials like polycarbonate, PETG, and polypropylene.
For metal casting, the PLA is able to melt without expanding or leaving very little residue. When printed with PBF, it also has the surface finish necessary for casting. There have been numerous stories in which desktop 3D printing users 3D print PLA models, wrapping them in a ceramic mold and burning out the models with molten metal. Unlike desktop material extrusion machines, PBF doesn’t suffer from obvious layer lines, thus resulting in smoother metal components.
Perhaps more importantly, PLA 3110P is also much more sustainable, with a carbon footprint that is 89 percent smaller than PA 12, according to NatureWorks. At the same time, it is comparatively inexpensive. This means that, when it comes to thermoforming, casting, or even printing models, prototypes, jigs, and fixtures, users now have a renewable alternative to petrochemicals. As companies seek to reduce their emissions, they can substitute their legacy materials with PLA.
“The entire industry is focusing more and more on sustainability. We’re doing our part by investing in technologies that introduce sustainability as an option for our customers. This PLA product is absolutely suitable for many of the thermoforming applications out there. If they’re currently performing thermoforming today, I hope they consider looking at a sustainable solution,” Rodgers said.
New Materials Partnerships
In addition to the new PLA, Jabil also announced a collaboration with Nexa3D in which its PK5000 material, the aforementioned polyketone (PK) derived from sequestered carbon monoxide, was made available for Nexa3D’s QLS 236 and QLS 820 SLS printers.
Along with that collaboration, Jabil was also involved in the development of a material that protects against electrostatic discharge (ESD). Created with Mechnano, the powder combines Jabil’s polyketone (PK) with Mechnano’s carbon nanotubes for use in PBF 3D printing. This allows for parts that can withstand functional testing and use in areas where ESD is an issue, such as in electronics manufacturing.
“Mechnano really likes the polyketone product because of its high elongation at break and high level of repeatability,” Rodgers said. “There are a lot of other companies out there that are just making polymers into powders and then calling them PBF products. And that’s not a product. We make sure that our powders can go into PBF. They make mechanically and dimensionally good parts.”
The manufacturing solutions provider is planning to continue its formulation of more sustainable polymers. Jesse Sumstad, Senior Product Manager at Jabil, put it this way during our interview:
“Our customers know that, the way that the market is right now, they’re not going to have everything in some sustainable alternative, but every little bit helps. It may be that one product fits this little need and save 10% in carbon emissions here, or they turn to our PK and save carbon emissions there. I don’t think that anyone is realistic in thinking that they can have everything 100 percent sustainable, but everyone is looking to get a little bit greener here and a little bit greener there.”
Rodgers concurred, adding, “Everyone has to just start their journey. You never get anywhere unless you start, so it’s the little steps that enable the ecosystem to evolve, to mature into something that’s really sustainable.”
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