Thermoformable laminate structure with improved acoustical absorption
AssigneeMonsanto Company
InventorsJames S. Holtrop, Richard P. Maurer
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Abstract
A thermoformable laminate structure with improved acoustical absorption is provided which has a first and a third layer of foamed thermoplastic material and a second layer, intermediate the first and third layers, which is a material having acoustical properties different from the properties of the material of the first and third layers. A portion of the surface area of each layer is adhesively bonded to the adjacent layer. A resin impregnated fabric is bonded to the outer surfaces of the first and third layers.
Claims14
A thermoformable laminate structure with improved acoustical absorption comprising:
- a first layer of a foamed thermoplastic material;
- a third layer of a foamed thermoplastic material;
- a second layer intermediate said first and third layers, said second layer being a material having acoustical properties different from the acoustical properties of the thermoplastic material of said first and third layers;
- at least a portion of said first and second and said second and third layers being adhesively bonded together;
- and
- said first and third layers of thermoplastic material having an outer surface, said outer surface having a resin impregnated fabric bonded thereto.
A thermoformable laminate structure with improved acoustical absorption comprising:
- first and third layers of a thermoplastic material, said thermoplastic material being a foamed polystyrene, said first and third layers having an inner surface and an outer surface;
- a second layer of foamed material, said second layer of foamed material being a foamed polyurethane, said second layer being intermediate said first and third layers and a portion of said second layer being bonded to said inner surface of said first and third layers of themoplastic material;
- and
- a resin impregnated fabric adhesively bonded to said outer surfaces of said first and third layers of thermoplastic material, said fabric being a non-woven polyester, and said resin being a thermoformable synthetic polymer resin.
Dependencies are inferred from the claim text.