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The application of additive manufacturing (AM) technologies is rap-idly expanding within various industrial sectors, highlighting an urgent need to consider the Circular Economy of parts produced using these technologies. This involves reprocessing of End-of-Life (EoL) products made of various materials using a wide range of AM processes to divert waste from energy recovery or landfilling. This research explores the EoL processing of parts produced through Selective Absorption Fusion (SAF), focusing on Polyamide 12 (PA12). While previous publications have reported many mechanical, thermal, and chemical processes for recycling of polyamides, this research focuses on the thermal extrusion for recycling PA12 to produce Fused Deposition Modelling (FDM) filament, enabling the reuse of recycled materials within 3D printing processes. The PA12 undergoes unique changes during the SAF process, which impacts the quality of recycled materials for FDM filament production. This paper assesses the impact of these changes, as well as those caused by extrusion on recycled material properties, and identify process parameters which influence the quality and consistency of filament production.

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Circular Use of Polyamide 12 in Additive Manufacturing

  • 会议论文

  • 出版模式：

    开放获取

  • 发表日期：

    2026年

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  • James Call,
  • Shahin Rahimifard

摘要

The application of additive manufacturing (AM) technologies is rap-idly expanding within various industrial sectors, highlighting an urgent need to consider the Circular Economy of parts produced using these technologies. This involves reprocessing of End-of-Life (EoL) products made of various materials using a wide range of AM processes to divert waste from energy recovery or landfilling. This research explores the EoL processing of parts produced through Selective Absorption Fusion (SAF), focusing on Polyamide 12 (PA12). While previous publications have reported many mechanical, thermal, and chemical processes for recycling of polyamides, this research focuses on the thermal extrusion for recycling PA12 to produce Fused Deposition Modelling (FDM) filament, enabling the reuse of recycled materials within 3D printing processes. The PA12 undergoes unique changes during the SAF process, which impacts the quality of recycled materials for FDM filament production. This paper assesses the impact of these changes, as well as those caused by extrusion on recycled material properties, and identify process parameters which influence the quality and consistency of filament production.