Layered manufacturing process for an object with different layer material and object with different layer material

US11267192B2 · kind B2 · utility

Assignee

• Covestro Deutschland AG · DE

Inventors

• Dirk Achten · Leverkusen, DE
• Thomas Büsgen · Leverkusen, DE
• Peter Reichert · Thousand Oaks, US
• Nicolas Degiorgio · Krefeld, DE
• Rolf Wehrmann · Krefeld, DE
• Helmut-Werner Heuer · Krefeld, DE
• Eckhard Wenz · Neunburg vorm Wald, DE

Key dates

• Filing date: Dec 22, 2017
• Grant date: Mar 8, 2022
• Expiry date: Nov 28, 2038

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B33Y80/00
• WIPO field: Other special machines
• WIPO sector: Mechanical engineering

Abstract

A method for producing an object with layers of different materials in an additive manufacturing process comprises the following steps: •I) providing a construction material heated at least in part to a temperature above its glass transition temperature on a substrate, so that a layer of the construction material is obtained which corresponds to a first selected cross section of the object; •II) providing a construction material heated at least in part to a temperature above its glass transition temperature on a previously provided layer of the construction material, so that another layer of the construction material is obtained which corresponds to another selected cross section of the object and which is connected to the previously provided layer; •III) repeating step II) until the object is formed. In the individual steps II) in the method, the construction material is selected each time from a first construction material and a second construction material different from the first, the first construction material being a polycarbonate, polyester, polyester carbonate, polyimide, polylactic acid, polyvinyl chloride, polystyrene, polymethyl(meth)acrylate or mixtures of at least two…