Method for manufacturing a porcelain body in a desired shape

US6576173B1 · kind B1 · utility

Assignee

• Carl Freudenberg · DE

Inventors

• Franz Koppe · Eschenbach, DE
• Gerald M. Weber · Loveland, US

Key dates

• Filing date: Aug 22, 2000
• Grant date: Jun 10, 2003
• Expiry date: Aug 22, 2020

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C04B33/24
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

An improved method for manufacturing a porcelain object in a desired shape, from a mixture of at least clay, feldspar and quartz. According to the method, an aqueous dispersion of vinyl acetate and ethylene based copolymer is added to the mixture, and the mixture transformed into an aqueous mass in the shape of a foil with a thickness of 50 &mgr;m to 3 mm and dried. The dried foil is then formed into a desired object shape, and permanently hardened by a ceramic firing process. The dried foil may be brought into the desired object shape by known processes such as rolling, laminating, calendering, cutting, punching, paper folding methods and deep drawing. Once brought into the desired object shape, no drying is required before ceramic firing.