TH39722A - Sound insulation panels - Google Patents

Abstract

DC60 (13/09/42) is a multi-layer sound insulation panel consisting of a surface layer, a foam core layer, and a plastic core bonded to the surface layer. The core is fixed at separate contact points, leaving a gap between the core and the structure. In the case of a long and/or thin surface layer, movement is inhibited, maintaining the core at a specific distance from the structure. The core material is a semi-rigid, open-cell material with more than 50% open cells (preferably more than 90%), a tensile strength greater than 50 kPa (preferably greater than 90 kPa), and a compressive strength from 5 to 200 kPa (preferably from 15 to 80 kPa at 10% deformation). The bonding of the core to the surface layer is crucial. The face will be important, and the distance between contact points should be at least 350 mm, and the appropriate range for selection should be between 450 and 600 mm. Panels conforming to this invention can be used in construction and other industries for improving the sound insulation properties of buildings and/or machinery. A multi-layer sound insulation panel consisting of one face layer, one plastic foam core layer bonded to that part, one structure in which the core layer is fixed at separate contact points leaving a gap between the core layer and the structure, and in the case of a face layer with long and/or some movement inhibition, which will maintain the core layer at a certain distance from the structure in which the core layer material is. Semi-rigid cell type, packed with more than 50 percent open cells, preferably more than 90 percent, with a tensile strength of more than 50 kPa, preferably more than 90 kPa, and a compressive strength ranging from 5 to 200 kPa, preferably from 15 to 80 kPa at 10 percent deformation, where the adhesion of the core layer to the surface layer is important, and the distance between contact points is at least 350 mm, preferably in the range of 450 to 600 mm. Panels conforming to this invention can be used in construction and other industries for improving the sound insulation properties of buildings and/or machinery.

Claims (10)

1. Multilayer sound insulation panels consist of a surface layer and a foam core layer. The plastic is bonded to this layer, and the core layer is fixed at separate contact points, leaving a gap between the core and the structure. In the case of a surface layer with long and/or thin spans, movement is inhibited, maintaining the core layer at a specific distance from the structure. The core material is a semi-rigid, open-cell material with more than 50% open cells (preferably more than 90%), a tensile strength greater than 50 kPa (preferably greater than 90 kPa), and a compressive strength ranging from 5 to 200 kPa (preferably from 15 to 80 kPa at 10% deformation). The adhesion of the core layer to the surface layer is crucial, and the distance between contact points should be at least 350 mm, ideally within the range of 450 to 600 mm. 2. Panels conforming to claim 1 are specified to have a core material of polyurethane foam. 3. Panels conforming to either claim 1 or 2, which are specified to have a surface layer, core layer, and contact thickness of at least 10 mm., should have a minimum thickness ranging from 10 to 200 mm, and a maximum thickness ranging from 20 to 80 mm. 4. Panels conforming to any one of claims 1 through 3, which are specified as having a core material with an airflow resistance of 5,000 to 800,000 Newton-seconds/meter, should have a range of 5,000 to 300,000 Newton-seconds/meter. 5. Panels conforming to any one of claims 1 through 4, which are characterized by a core material having a loss factor greater than 0.1, should be selected with a value greater than 0.2. 6. Panels conforming to any one of claims 1 through 5 are characterized by a minimum distance of 0.1 mm between the immobilization limit (if any) or the distance of the axial layer from the structure at 10 percent deformation. The selected panel range should be between 2 and 10 mm. 7. Panels conforming to any one of claims 1 through 6, which are characterized by the total area of touch points being relative to the total area of the panel in a ratio of less than 20 percent, should have a value of less than 6 percent. 8. Panels conforming to any one of Reputations 1 through 7 are defined as having the structure to be a wall, ceiling, or secondary surface layer. 9. The use of panels that comply with any one of claims 1 through 8 in construction and other industries for improving the sound insulation properties of buildings and/or machinery. 10. Use of panels in accordance with claim 8 where the structure is a second surface layer that functions as a partition or wall component.