Foam material element for sound-damping cavities

Details Foam material element for sound-damping cavities Foam material element for sound-damping cavities

1998-12-18

1999-11-30

Thomas, Alexander

Stock material or miscellaneous articles

Sheet including cover or casing

Foamed or expanded material encased

428 69, 4283179, 428218, B32B 106

Patent

active

059939320

ABSTRACT:
A foam material element for sound-damping cavities, particularly for light metal extruded profiles used in rail car construction. The foam material element has a foam material sandwich with at least two layers, namely a resilient layer and at least one heavy layer disposed on the resilient layer. The resilient layer is formed of soft foam polyurethane and the heavy layer is formed of a flocculated foam polyurethane compound. Prior to being inserted in a cavity to be sound-proofed, the foam material element is compressed and weld-sealed in an air-tight film. The element is inserted through an opening of the cavity in its compressed condition. After insertion and placement of the foam material element, the film is opened and, as a result of its exposure to air, the foam material element expands to such a degree that at least one heavy layer, biassed by the resilient layer, comes into contact with the walls substantially over a broad surface area.

REFERENCES:
patent: 5529824 (1996-06-01), Walendy et al.

Affiliated with

Also associated with

Rating

Foam material element for sound-damping cavities does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Foam material element for sound-damping cavities, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Foam material element for sound-damping cavities will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1668840