Production of composites from polymer powder dispersions

US5888580A · kind A · utility

Assignee

• Hoechst GmbH · DE

Inventors

• Georg Hinrichsen · Berlin, DE
• Albert Maria Vodermayer · Dietlikon, CH
• Karl-Heinz Reichert · Berlin, DE
• Lothar Kuhnert · Berlin, DE
• Wolfgang Lindner · Parsippany, US
• Gerd Goldmann · Krefeld, DE

Key dates

• Filing date: Oct 23, 1997
• Grant date: Mar 30, 1999
• Expiry date: Oct 23, 2017

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B29B15/12
• WIPO field: Other special machines
• WIPO sector: Mechanical engineering

Abstract

Continuous process for producing unidirectionally reinforced composite materials by impregnating a continuous reinforcing fiber strand with a thermoplastic matrix in an impregnating bath containing a dispersion of a thermoplastic powder by measuring the width of the strand leaving the impregnating bath and using this measured value for regulating the polymer concentration in the impregnating bath.