Heat bondable asphaltic sound deadener

• US 4,287,263 A
• Filed: 08/15/1979
• Issued: 09/01/1981
• Est. Priority Date: 05/12/1978
• Status: Expired due to Term

• Current Assignee: GAF Corporation (Gaf Fiberglass Corp.)
• Original Assignee: GAF Corporation (Gaf Fiberglass Corp.)
• Inventors: Woodring, William J., Gulino, James A.
• Primary Examiner(s): VAN BALEN, WILLIAM
• Application Number:
  US06/066,612
• Time in Patent Office: 748 Days
• Field of Search: 106/281 R, 106/DIG. 3, 181/286, 181/290, 181/292, 181/293, 181/294, 428/137-139, 428/324, 428/363, 428/424, 428/450, 428/454, 428/461, 428/468, 428/489, 428/523
• US Class Current: 428/489
• CPC Class Codes: B32B 11/02 with fibres or particles being present as additives in the layer
• CPC Class Codes: C08K 3/26 Carbonates; Bicarbonates
• CPC Class Codes: C08K 3/34 Silicon-containing compounds
• CPC Class Codes: C08L 95/00 Compositions of bituminous materials, e.g. asphalt, tar, pitch
• CPC Class Codes: Y10S 106/03 Mica
• CPC Class Codes: Y10T 428/24331 including nonapertured component
• CPC Class Codes: Y10T 428/251 Mica
• CPC Class Codes: Y10T 428/31717 Next to bituminous or tarry residue
• CPC Class Codes: Y10T 428/31815 Of bituminous or tarry residue
• CPC Class Codes: Y10T 428/31938 Polymer of monoethylenically unsaturated hydrocarbon

Abstract

This invention pertains to asphaltic sheet sound deadener for use as a vibration damping medium, which can be bonded in place without excessive sag or flow by subjecting the material to 250°-400° F. The main use of this material is in the automotive field, but may be used in other areas such as the appliance and furniture industries. The melt flow properties of the deadener are controlled by the use of ground mica.

Claims

1. An automobile heat contouring sound-deadening material made solely of 30% asphalt, 20% mica and 50% limestone composition secured by the composition to the automobile and having on at least one side of said composition a heat deteriorating polyethylene film.