Molded part and method of its production

US5786280A · kind A · utility

Assignee

• Eduard Kusters Maschinefabrik GmbH & Co. KG · DE

Inventors

• Bernhard Funger · Krefeld, DE
• Heinz Gruber · Seesen, DE

Key dates

• Filing date: Jun 23, 1994
• Grant date: Jul 28, 1998
• Expiry date: Jun 23, 2014

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T442/2893
• WIPO field: Other special machines
• WIPO sector: Mechanical engineering

Abstract

Carpet material with at least a proportion of uncleaned used carpets is shredded to form a fiber-like wooly mass. The carpet material contains a thermoplastic binder with a low melting point, for example polypropylene, which can be derived from the used carpets or be added. Furthermore, a duroplastically hardening binder, for example phenolic resin, is added to the carpet material. The carpet material is compressed to form the molded part or panel with these two binders, at a temperature which lies above the plasticizing point of the thermoplastic binder, but below the plasticizing point of any other thermoplastic components of the carpet material.