Acoustic baffle members and methods for applying acoustic baffles in cavities

US8535463B2 · kind B2 · utility

Assignee

• DOW GLOBAL TECHNOLOGIES LLC · US

Inventors

• Mark P. Allen · Washington Township, US
• Thomas B. Chen · Shanghai, CN
• Tom Tao Chen · San Carlos, US
• Jay M. Tudor · Goodrich, US
• Matthew J. Turpin · Sanford, US
• Thomas Joseph Mettler · Hudson, US
• Xiao Chun Liu · Shanghai, CN
• Eric Yi Ge Yin · Shanghai, CN
• Yein J. Cai · Shanghai, CN

Key dates

• Filing date: Nov 26, 2009
• Grant date: Sep 17, 2013
• Expiry date: Jun 9, 2030

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/249987
• WIPO field: Transport
• WIPO sector: Mechanical engineering

Abstract

An uncured acoustic absorbing member (1, 31) for cavity sealing comprises a thermally inert carrier (8, 38) and a thermally expandable material (6, 40) applied to the carrier. The carrier (8, 38) contains openings (3, 33) which become covered when the thermally expandable material is expanded to seal the cavity. The acoustic absorbing members (1, 31) are particularly useful for sealing automotive cavities to provide acoustical abatement and to prevent the entry of fluids into the cavity.