TECHNOLOGY | 3D PRINT COMPOUNDS
offer a significantly reduced carbon footprint. The new sustainable grades are produced using renewable energies at the company’s Marl Chemi- cal Park facility in Germany, which is certified by TÜV Rheinland to have a carbon footprint improve- ment of almost 50%. Evonik is replacing its current castor-oil based Infinam PA12 products with the new alternative for all common powder-based 3D technologies, including SLS, HSS and MJF. Evonik is also developing a new Infinam eCO
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Sustainability is a key focus for Evonik, which aims to reduce the carbon footprint of its Infinam PA12 powder
needed for 3D printing, even when blended with reinforcing glass fibers. Toray developed the material by applying its proprietary polyamide particle technology, which creates spherical particles when PA is polymerised. Toraypearl PA6 is said to offer high strength, heat
resistance and good mechanical properties. Toray says it is targeting prototype applications that require such performance, which includes automo- tive parts, power tools and other equipment. The company says its particle technology can be applied to other PA grades, including PA66 and PA12. Tokyo-based 3D printer company Aspect has obtained conformity certification for Toraypearl PA6 for its AM-E3 300 HT and 550HT additive manufacturing printers. Toray says Toraypearl PA6 will augment its Toraymill polyphenylene sulphide (PPS) resin milled powder to expand its lineup of materials to 3D printers. It says the production facility for this material should be fully operational by the fiscal year ending March 2026.
A lighter footprint Specialty chemical company Evonik has recently introduced new grades of its Infinam polyamide 12 (PA12) powders for 3D printing that are claimed to
product line, which avoids high greenhouse gas carbon dioxide emissions by using renewable or circular raw materials via mass balance. Evonik plans to launch the product line in 2023. The company has also added three new additions to the Infinam photopolymer line for common UV-curing printing processes such as SLA or DLP. Infinam RG 2000 L is a clear liquid photo- resin that cures quickly, is easy to process, and has a low yellowing index. The high-performance material is suitable for production of additive manufactured eyewear frames, as well as microflu- idic reactors. Its good light transmission properties make it suitable for lenses, light guides and illumination covers. Infinam RG 7100L is developed for DLP printers and can be used to produce parts with isotropic properties and low moisture absorption, or for applications that require high ductility combined with high impact strength. Printed parts can be machined and remain fracture resistant even when subjected to high force. Mechanical properties are said to be comparable to ABS and the black coloured formulation exhibits a smooth and glossy surface.
Infinam TI 5400L is formulated to satisfy additive manufacturer demands for a PVC-like resin for the rapidly growing Asian market for limited-edition designer toys. The fully cured white-coloured material combines good impact strength with high elongation and exhibits long-lasting
IMAGE: EVONIK
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