Method of and apparatus for producing gypsum fiber boards (plasterboard)

US4734163A · kind A · utility

Assignee

• Babcock-BSH GmbH · DE

Inventors

• Kurt Eberhardt · Ulm, DE
• Heinrich Blackert · Bad Hersfeld, DE
• Gerald Forbert · Bad Hersfeld, DE
• Josef Steinkuhl · Bad Hersfeld, DE
• Horst Hose · Kassel, DE
• Friedrich Bahner · Lengede, DE

Key dates

• Filing date: May 23, 1985
• Grant date: Mar 29, 1988
• Expiry date: May 23, 2005

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02W30/91
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

A method of and apparatus for producing gypsum fiber boards includes introducing shaped boards provided of a mash of calcium sulphate dihydrate and fibrous material and possibly additives after dewatering and shaping the mash into at least one pressure vessel and to heat the boards at saturated steam atmosphere to 120.degree.-160.degree. C. over a predetermined period. Thereafter, the boards are allowed to cool down within the pressure vessel to a temperature of about 100.degree. or less before being discharged therefrom.