Method of manufacturing a composite foam from foam flakes, composite foam, and use of this composite foam

US6228478A · kind A · utility

Assignee

• Stankiewicz GmbH · DE

Inventors

• Carsten Kliwer · Bad Doberan, DE
• Christoph Kittel · Bad Doberan, DE

Key dates

• Filing date: Dec 16, 1996
• Grant date: May 8, 2001
• Expiry date: Dec 16, 2016

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/249985
• WIPO field: Other special machines
• WIPO sector: Mechanical engineering

Abstract

For manufacturing a composite foam, having acoustic properties, foam flakes (8) of differing sizes, differing origins, and/or differing material compositions are wetted with a small quantity of a polyurethane dispersion binding agent. The mixture is subsequently combined to a molded part (1) or to continuous web and under the effect of hot (water) steam or microwave energy is cured and subsequently dried. The composite foam can be used for sound insulation purposes in vehicles and in general machinery construction, and also in building construction.