積層造形における循環性の向上：ポストコンシューマーPA12リサイクルのライフサイクルアセスメント
Advancing Circularity in Additive Manufacturing: Life Cycle Assessment of Post-Consumer PA12 Recycling (原題)
Nicole Príncipe C. da S. Ribeiro, Beatriz do Santos Silva Brito, Renato de Souza Nascimento, Iago Rodrigues de Abreu, Samuel Alex Sipert Miranda, Edna dos Santos Almeida, Lorena de O. Carvalho
🤖 gxceed AI 要約
日本語
本研究は、粉末床溶融結合法（PBF）で製造されたポリアミド12（PA12）部品の機械的リサイクルをライフサイクルアセスメント（LCA）で評価した。機能単位を1kgの再生PA12ペレットとし、ISO 14040/44に準拠したクレードル・トゥ・ゲート分析により、再生PA12はバージン材と比較してカーボンフットプリントを10%削減できることを示した。乾燥工程が総排出量に最も寄与し、電力消費が主要因である。
English
This study evaluates the environmental performance of mechanically recycled polyamide 12 (PA12) from powder bed fusion (PBF) additive manufacturing via life cycle assessment (LCA). Using a cradle-to-gate boundary and functional unit of 1 kg of recycled PA12 pellets, the authors found a 10% carbon footprint reduction compared to virgin PA12. Drying was the most impactful stage, with electricity consumption as the dominant contributor.
Unofficial AI-generated summary based on the public title and abstract. Not an official translation.
📝 gxceed 編集解説 — Why this matters
日本のGX文脈において
日本では、プラスチック資源循環法やカーボンニュートラル宣言に伴い、製造業におけるリサイクル材活用が注目されている。本研究成果は、積層造形のサプライチェーンにおけるリサイクル統合の環境便益を定量化し、国内のAM導入企業や材料メーカーにとって参考となる。
In the global GX context
Globally, this study addresses the growing need for circular economy strategies in additive manufacturing, a sector with increasing material waste. By quantifying the carbon footprint reduction of recycled PA12, it provides evidence for integrating recycling into AM supply chains, aligning with broader sustainability goals and circular economy principles.
👥 読者別の含意
🔬研究者:Provides a case study on LCA of recycled AM polymer, contributing to the limited literature on end-of-life options for AM parts.
🏢実務担当者:Offers data on the environmental benefits of recycling PA12, useful for companies in AM or plastics recycling to assess circularity initiatives.
🏛政策担当者:Highlights the potential of recycling in AM to reduce carbon footprint, informing policies that promote circular economy in manufacturing.
📄 Abstract（原文）
Additive Manufacturing (AM) has emerged as a transformative technology in industrial production, enabling the fabrication of complex geometries with reduced material waste compared to conventional methods. Among its techniques, Powder Bed Fusion (PBF) is widely applied to polymeric materials such as polyamide 12 (PA12), producing durable components that eventually reach end-of-life. The growing volume of discarded AM parts highlights the need for sustainable end-of-life strategies, with mechanical recycling offering a promising pathway to close material loops within a circular economy. This study evaluates the environmental performance of post-consumer PA12 recycling from prototypes and parts manufactured via PBF using the HP Multi Jet Fusion 5210 printer. The assessment followed ISO 14040 and 14044 guidelines, adopting a cradle-to-gate boundary and a functional unit of 1 kg of recycled PA12 pellets (PA12r). Data were based on primary measurements at SENAI/CIMATEC’s facilities, complemented by secondary datasets from Ecoinvent 3.10.1. The product system comprised five stages: Cascalheira Milling, Cimatec Park Milling, Manual Washing, Drying, and Extrusion/Pelletizing. Life Cycle Impact Assessment (LCIA) results, focused on Global Warming Potential (GWP100, IPCC 2021), showed PA12r achieved a 10% carbon footprint reduction compared to virgin PA12. Drying was the most impactful stage in total emissions, while Extrusion/Pelletizing had the highest hourly rates, underscoring their critical roles in optimization. Electricity consumption was the dominant contributor, influenced by equipment demand and Brazil’s energy mix. Findings show the technical and environmental potential of scaling PA12 recycling for additive andconventional manufacturing, while addressing a literature gap and supporting recycling integration in AM supply chains to boost circularity and reduce impacts.
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- semanticscholar https://jbth.com.br/index.php/JBTH/article/download/654/570first seen 2026-08-23 05:08:37 · last seen 2026-09-21 04:55:54
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