Additive layer manufacturing method and articles

US11577458B2 · kind B2 · utility

Assignee

• 3M INNOVATIVE PROPERTIES COMPANY · US

Inventors

• Jean-Luc Rifaut · Brussels, BE
• Jens Eichler · Kaarst, DE
• Tilo Remhof · Hilden, DE
• Brian D. Goers · Minneapolis, US
• Brian A. Shukla · Woodbury, US
• Alexander J. Kugel · Woodbury, US
• Maiken Givot · Okabena, US
• Michael C. Harper · Hudson, US

Key dates

• Filing date: Jun 27, 2019
• Grant date: Feb 14, 2023
• Expiry date: Aug 10, 2039

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02P10/25
• WIPO field: Other special machines
• WIPO sector: Mechanical engineering

Abstract

An additive layer manufacturing method, preferably using selective laser sintering, for manufacturing a solid article, the method including applying a layer of a powder, the powder including at least one powdered (co)polymer, onto a solid substrate in a processing chamber; fusing the powder layer onto the solid substrate; subsequently depositing successive layers of the powder, wherein each successive layer is selectively fused prior to deposition of the subsequent layer of powder so as to form the article. In some embodiments, the powder further includes abrasive particles having a hardness greater than or equal to that of aluminum oxide.