Recyclable bumper system

US5122398A · kind A · utility

Assignee

• BASF SE

Inventors

• Erhard Seiler · Ludwigshafen, DE
• Klaus-Dieter Ruempler · Monsheim, DE
• Norbert Jung · Würselen, DE
• Udo Haardt · Biblis, DE
• Rainer Henning · Munster, DE
• Juergen Hamprecht · Munster, DE

Key dates

• Filing date: Nov 26, 1990
• Grant date: Jun 16, 1992
• Expiry date: Nov 26, 2010

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/249992
• WIPO field: Transport
• WIPO sector: Mechanical engineering

Abstract

A recyclable bumper system based on polypropylene comprises a bumper support A of glass fiber reinforced polypropylene, an energy-absorbing foam core B of foamed polypropylene and a tough shell C of EP-rubber modified polypropylene which may be coated, and can be recycled by mechanical comminution, extrusion and granulation, resulting in granules from which injection moldings having good mechanical properties can be produced.