Process to manufacture three dimensionally shaped substrate for sound abatement

US6773756B2 · kind B2 · utility

Assignees

• Bayer Polymers LLC · US
• BAYER HEALTHCARE LLC · DE

Inventors

• Sven Meyer-Ahrens · Leverkusen, DE
• Thomas J. Matwiczyk · Bloomfield Hills, US
• Bin Lee · Dorpsstraat, US
• Michael Blaszkiewicz · Gibsonia, US
• Walter Guarnieri · Leverkusen, DE

Key dates

• Filing date: Mar 20, 2002
• Grant date: Aug 10, 2004
• Expiry date: Mar 20, 2022

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/31551
• WIPO field: Other special machines
• WIPO sector: Mechanical engineering

Abstract

The present invention is directed to a process for the manufacture of three-dimensional acoustically sound automotive insulation parts. In particular, the process includes mixing a two component polyurethane resin, applying the resin to a substrate, molding the substrate and then trimming and demolding the resin applied substrate.