Laminated acoustic soundproofing panel

• US 8,627,922 B2
• Filed: 03/10/2010
• Issued: 01/14/2014
• Est. Priority Date: 03/10/2009
• Status: Active Grant

• Current Assignee: BPB Limited A UK Corporation (Compagnie De Saint-Gobain S.A.)
• Original Assignee: BPB Limited A UK Corporation (Compagnie De Saint-Gobain S.A.)
• Inventors: Fournier, David, Rehfeld, Marc, Ozouf, Pascal
• Primary Examiner(s): Warren, David
• Assistant Examiner(s): RUSSELL, CHRISTINA MARIE
• Application Number:
  US13/255,172
• Publication Number:
  US 20120073899A1
• Time in Patent Office: 1,406 Days
• Field of Search: 181/294, 181/290, 181/108, 181/207, 181/284
• US Class Current: 181/294
• CPC Class Codes: B32B 13/02 with fibres or particles being present as additives in the layer
• CPC Class Codes: B32B 13/08 of paper or cardboard
• CPC Class Codes: B32B 13/12 of synthetic resin
• CPC Class Codes: B32B 21/06 of paper or cardboard
• CPC Class Codes: B32B 21/08 of synthetic resin
• CPC Class Codes: B32B 2307/102 Insulating
• CPC Class Codes: B32B 2307/50 having particular mechanical properties
• CPC Class Codes: B32B 2307/56 Damping, energy absorption
• CPC Class Codes: B32B 2307/718 Weight, e.g. weight per square meter
• CPC Class Codes: B32B 2419/00 Buildings or parts thereof
• CPC Class Codes: B32B 2471/00 Floor coverings B32B2419/04 takes precedence
• CPC Class Codes: B32B 2607/00 Walls, panels
• CPC Class Codes: B32B 27/10 of paper or cardboard
• CPC Class Codes: B32B 27/308 comprising acrylic (co)polymers
• CPC Class Codes: B32B 7/12 using interposed adhesives or interposed materials with bonding properties
• CPC Class Codes: E04B 1/86 slab-shaped
• CPC Class Codes: E04B 2001/8461 layered
• CPC Class Codes: Y10T 428/2848 Three or more layers

Abstract

A laminated acoustic building panel comprises a pair of plasterboard substrates which are bonded together by an adhesive layer, the panel having a dynamic Young'"'"'s modulus of 0.1 to 5 GPa and a damping loss factor of 5-30% (η=0.05-0.3), and the ratio of the adhesive to the applied surface area of the substrates being 80-250 g/m2. The laminated panel is relatively soft in construction and hence sound waves caused by knocking or impact noise is surprisingly damped using considerably less adhesive than known panels. The use of soft substrates and less adhesive significantly reduces the weight of the panel. Furthermore, the use of less adhesive significantly reduces costs and makes production easier.

Claims

1. A laminated acoustic building panel comprising a first substrate layer, a second substrate layer bonded to the first layer by an adhesive layer, the panel having a dynamic Young'"'"'s modulus of 0.1 to 5 GPa and a damping loss factor of 5-30% (η

=0.05-0.3), wherein the ratio of the adhesive to the applied surface area of the substrate is 80-250 g/m² and wherein the adhesive has a dynamic Young'"'"'s modulus (at 20°

C.) of 0.1 to 50 MPa at 100 Hz and/or 0.5 MPa to 100 MPa at 1000 Hz and a loss factor of at least 50% (η

>

0.5).

2. A laminated acoustic building panel as described in claim 1, in which at least one the substrate layers comprises a sheet of gypsum or plasterboard.

3. A laminated acoustic building panel as claimed in claim 1 or claim 2, in which the adhesive has a dynamic Young'"'"'s modulus (at 20°

C.) of 0.1 to 0.5 MPa at 100 Hz and/or 0.5 MPa to 100 MPa at 1000 Hz and a loss factor of at least 50% (η

>

0.5).

4. A laminated acoustic building panel as described in claim 1 in which the adhesive comprises an acrylic-based adhesive.

5. A laminated acoustic building panel as described in claim 1 in which the adhesive comprises a hot-melt adhesive.

6. A laminated acoustic building panel as described in claim 1 in which at least one the substrate layers comprises a sheet of fiber reinforced gypsum or fiber reinforced plasterboard.

7. A laminated acoustic building panel as described in claim 1 in which at least one the substrate layers comprises a sheet of cement wallboard.

8. A laminated acoustic building panel as described in claim 1 in which at least one the substrate layers comprises a sheet of wood wallboard.

9. A laminated acoustic building panel as described in claim 1 in which at least one the substrate layers comprises a sheet having layers of material which are laminated together.

10. A laminated acoustic building panel as described in claim 1 in which the substrate sheets are formed of identical material.

11. A laminated acoustic building panel as described in claim 1 in which the substrate sheets are of identical thickness.

12. A laminated acoustic building panel as described in claim 1 in which each substrate layer has a thickness of 6 to 25 mm.

13. A laminated acoustic building panel as described in claim 1 in which the ratio of the adhesive to the applied surface area of the substrate is 100-150 g/m².

14. A laminated acoustic building panel as described in claim 1 in which the ratio of the adhesive to the applied surface area of the substrate is 80-100 g/m².