Recycling of thermosetting polyurethane soft foam

US5185380A · kind A · utility

Assignee

• Stankiewicz GmbH · DE

Inventors

• Cornelia Diessel · Wolthausen, DE
• Carsten Kliwer · Bad Doberan, DE
• Gerhard Burak · Celle, DE
• Ehrenfried Blumel · Celle, DE
• Christoph Kittel · Bad Doberan, DE

Key dates

• Filing date: Jun 21, 1991
• Grant date: Feb 9, 1993
• Expiry date: Jun 21, 2011

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S264/916
• WIPO field: Other special machines
• WIPO sector: Mechanical engineering

Abstract

The invention relates to a process for recycling thermosetting polyurethane soft foams in which they are comminuted in a mill, irrespective of their initial shape, density and structure, and are then pressed under the influence of pressure and elevated temperatures to high-strength sheets of various structures.