Keldax® Sound Barrier Resin

Sound Barrier Resin Keeps Noise Down in Automotive Applications

DuPont™ Keldax® sound barrier resin is a filled, ethylene-based polymer that provides acoustical sound barrier performance in automotive and other applications.

Nothing gives you a break from your hective life than the hush of a well-insulated car interior. Keldax® sound barrier resin used in carpet backing, door panels and components help reduce unwanted noise, from both interior sources, such as seat belt retractors, and exterior culprits, like engines, transmissions, and suspension systems.

In automotive carpets, the ability to thermoform Keldax® sound barrier resin allows manufacturers to pre-shape ready-to-install, mass-backed carpets that speed automotive assembly. A recyclable thermoplastic, Keldax® can be processed to extremely thin gauges, a critical advantage in optimizing acoustics, space, weight and cost; and when designing double-walled sound barriers, which include a sound-deadening air space.

Other applications include sound and watershield barriers in automotive door panels and in building and construction applications to isolate noise.