LIghtweight rubber damping material

Gummiwerk Kraiburg GmbH & Co. KG exhibited at JEC Europe its Kraibon rubber material that is added to the laminate stack, and which cures with the composite laminate. It is intended as a replacement for aluminum butyl damping material.

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Gummiwerk Kraiburg GmbH & Co. KG (Waldkraiburg, Germany) had an interactive stand displaying laminate panels both with and without the company’s Kraibon lightweight rubber damping material — when whacked with a drumstick, the panels exhibited dramatic acoustic differences. Kraibon is a thin film of uncured rubber added to the laminate stack, which cures with the laminate. Aimed at automotive parts, the very thin rubber material ply is significantly lighter than the aluminum butyl vibration insulation material typically added by the auto industry for acoustical damping and NVH (noise, vibration harshness) control. And, Kraibon improves composites’ damage tolerance, says the company.  

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