Extrusion die for making a double-skin honeycomb substrate

US7112050B2 · kind B2 · utility

Assignee

• CORNING INCORPORATED · US

Inventors

• James Joseph Bernas · Horseheads, US
• Thomas William Brew · Corning, US
• Rodney I. Frost · Corning, US
• Mark Lee Humphrey · Elmira, US
• Weiguo Miao · Corning, US
• Kenneth Richard Miller · Addison, US
• Yawei Sun · Elmira, US
• David Robertson Treacy, Jr. · Beaver Dams, US
• Sujanto Widjaja · Cupertino, US

Key dates

• Filing date: Jun 26, 2003
• Grant date: Sep 26, 2006
• Expiry date: Jul 5, 2024

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/24149
• WIPO field: Other special machines
• WIPO sector: Mechanical engineering

Abstract

A honeycomb substrate includes an inner body having an inner skin and an array of inner webs defining an array of inner cells within the inner skin. The honeycomb substrate further includes an outer body having an outer skin formed concentric with the inner skin and an array of outer webs defining an array of triangle cells between the inner skin and the outer skin. The triangle cells are oriented along a radial direction with respect to a center of the inner body. An extrusion assembly for forming the honeycomb substrate includes an inner cell forming die, an outer cell forming die, and a skin forming mask, all mounted coaxially. An outer skin slot formed between the outer cell forming die and the skin forming mask is in communication with feedholes in the inner cell forming die through an opening in the outer cell forming die.