Process for manufacturing a sound insulating structure
AssigneeDr. Alois Stankiewicz GmbH
InventorsChristoph Kittel, Hans Walendy, Gerhard Burak, Manfred Hoffmann
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Abstract
A sound insulating structure is provided which is made by foam-backing a carpet in a single operation and which includes a consolidated layer with few or no cells followed by a cellular soft elastic layer. To this end structured materials such as fleece and/or cut foam into which foaming takes place in order to form the consolidated layer, are provided on the back of the carpet or of a foam-proof covering thereon.
Claims15
A process for manufacturing a sound insulating structure comprising disposing a decorative covering provided with a backing of structured material in a closed tool;
- initiating foaming in said closed tool, whereby a foam is formed collapsing said foam to form a consolidated layer with at most a few cells;
- thereafter further foaming to form an elastic soft foam layer adjacent to said consolidated layer wherein said structured material is disposed between said consolidated layer and said soft foam layer.
Dependencies are inferred from the claim text.