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US 2006/0216471 A1Published application
Pitch modulating laminate with an apertured acoustic layer
AssigneeCyovac, Inc.
InventorsMichael Grah, Janet Rivett
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Abstract
A laminate comprises a core layer and one or more acoustic layers adhered to the core layer. The core layer is at least about 30 mils thick and comprises one or more materials selected from wood and wood composite. The total thickness of the one or more acoustic layers is greater than about 5 mils. The one or more acoustic layers define a plurality of apertures, and either have a glass transition temperature of at most about 0° C. along with a crystallinity of at most about 39 weight %, or comprise at least about 40 weight % elastic polymer, or both. The laminate may be useful in flooring systems.
Claims27
A laminate comprising:
- a core layer comprising one or more materials selected from wood and wood composite, wherein the core layer has a thickness of at least about 30 mils;
- and
- one or more acoustic layers adhered to the core layer, wherein the one or more acoustic layers:
- define a plurality of apertures;
- have a total thickness of greater than about 5 mils;
- comprise one or more polymers;
- and
- have a characteristic selected from at least one of:
- a) a glass transition temperature of at most about 0° C. combined with a crystallinity of at most about 39 weight %;
- and
- b) comprising at least about 40 weight % elastic polymer.
8 more elements
Dependencies are inferred from the claim text.