Laminate acoustic panel

1. An acoustic ceiling panel comprising:

a first layer comprising a first major surface and a second major surface, the second major surface of the first layer defined by a perimeter, the second major surface of the first layer comprising a perimeter region adjacent the perimeter of the second major surface of the first layer and a central region circumscribed by the perimeter region of the second major surface of the first layer;

a second layer comprising a first major surface and a second major surface, the first major surface of the second layer defined by a perimeter, the first major surface of the second layer comprising a perimeter region adjacent the perimeter of the first major surface of the second layer and a central region circumscribed by the perimeter region of the first major surface of the second layer; and

the perimeter region of the second major surface of the first layer coupled to the perimeter region of the first major surface by an adhesive, each of the central region of the second major surface of the first layer and the central region of the first major surface of the second layer being free of adhesive and the central region of the second major surface of the first layer is in contact with the central region of the first major surface of the second layer, to form a cohesive multilayer panel.

2. The acoustic ceiling panel according to claim 1 wherein the acoustic ceiling panel has a CAC value of 35 or greater.

3. The acoustic ceiling panel according to claim 1 wherein the acoustic ceiling panel has an NRC value of 0.7 or greater.

4. The acoustic ceiling panel according to claim 1 , wherein the adhesive is applied to a limited section of the perimeter region.

5. The acoustic ceiling panel according to claim 1 , wherein the ceiling panel is substantially rectangular in shape and the adhesive is applied to four corners of the perimeter region.

6. The acoustic ceiling panel according to claim 1 , wherein the second layer has a CAC value that is greater than a CAC value of the first layer, and the first layer has an NRC value that is greater than an NRC layer of the second layer.

7. The acoustic ceiling panel according to claim 6 , wherein the second layer has a CAC value of at least 35, and the first layer has an NRC value of at least 0.7.

8. A suspended ceiling system comprising:

a ceiling grid comprising a plurality of first members and a plurality of second members, the first and second members intersecting one another to define a plurality of grid openings;

a plenary space above the ceiling grid;

a room environment below the ceiling grid; and

for each of the grid openings, the acoustical ceiling panel according to claim 1 mounted to the ceiling grid and positioned within the grid opening.

9. The ceiling panel according to claim 1 , wherein the central region of the second major surface of the first layer occupies at least 95% of the second major surface of the first layer.

10. The acoustic ceiling panel according to claim 1 , further comprising:

the first layer comprising a side surface extending between the first and second major surfaces of the first layer, the side surface of the first layer intersecting the second major surface of the first layer to form an upper edge of the first layer, the upper edge of the first layer forming the perimeter of the second major surface of the first layer;

the second layer comprising a side surface extending between the first and second major surfaces of the second layer, the side surface of the second layer intersecting the first major surface of the second layer to form a lower edge of the second layer, the lower edge of the second layer forming the perimeter of the first major surface of the second layer;

the upper edge of the first layer comprising a first upper edge portion, a second upper edge portion opposite the first upper edge portion, a third upper edge portion extending between the first and second upper edge portions, and a fourth upper edge portion opposite the third upper edge portion and extending between the first and second upper edge portions; and

the adhesive applied to the perimeter region of the second major surface comprising comprises a first adhesive strip extending adjacent to the first edge portion, a second adhesive strip extending adjacent to the second edge portion, a third adhesive strip extending adjacent to the third edge portion, and a fourth adhesive strip extending adjacent to the fourth edge portion.

11. The ceiling panel according to claim 10 wherein the first adhesive strip extends substantially parallel to the first edge portion, the second adhesive strip extends substantially parallel to the second edge portion, the third adhesive strip extends substantially parallel to the third edge portion, and the fourth adhesive strip extends substantially parallel to the fourth edge portion.

12. The ceiling panel according to claim 10 , wherein the first adhesive strip is spaced a first distance from the first upper edge portion, the second adhesive strip is spaced a second distance from the second upper edge portion, the third adhesive strip extends is spaced a third distance from the third upper edge portion, and the fourth adhesive strip is spaced a fourth distance from the fourth upper edge portion.

13. The ceiling panel according to claim 10 , wherein the first, second, third, and fourth adhesive strips collectively define a closed-geometry circumscribing the central region.

14. The ceiling panel according to claim 1 , wherein the second major surface of the first layer is coupled to the first major surface of the second layer so that the perimeter of the second layer is aligned with the perimeter of the first layer.

15. The ceiling panel according to claim 1 , wherein the central region of the second major surface of the first layer occupies about 70% to about 99% of surface area of the second major surface of the first layer.

16. The ceiling panel according claim 1 , wherein the adhesive is polyvinyl acetate.

17. The ceiling panel according to claim 1 , wherein the first layer is a sound absorption layer and the second layer is a sound blocking layer.

18. The ceiling panel according to claim 1 , wherein the first layer is a fiberglass layer and the second layer is a mineral wool layer.

19. The acoustic panel according to claim 1 , wherein the adhesive is applied in a continuous line or a discontinuous line.

20. An acoustic ceiling panel comprising:

a first layer comprising a first major surface and a second major surface, the second major surface of the first layer defined by a perimeter, the second major surface of the first layer comprising a perimeter region adjacent the perimeter of the second major surface of the first layer and a central region circumscribed by the perimeter region of the second major surface of the first layer;

a second layer comprising a first major surface and a second major surface, the first major surface of the second layer defined by a perimeter, the first major surface of the second layer comprising a perimeter region adjacent the perimeter of the first major surface of the second layer and a central region circumscribed by the perimeter region of the first major surface of the second layer; and

the perimeter region of the second major surface of the first layer coupled to the perimeter region of the first major surface of the second layer by a plurality of adhesive strips, the adhesive strips collectively forming a closed-geometry that circumscribes the central region of the second major surface of the first layer and the central region of the first major surface of the second layer.

21. The ceiling panel according to claim 20 , wherein the acoustic ceiling panel has a CAC value of 40 or greater.

22. The acoustic ceiling panel according to claim 20 , wherein the acoustic ceiling panel has an NRC value of 0.90 or greater.

23. The acoustic ceiling panel according to claim 20 , wherein the second layer has a CAC value that is greater than a CAC value of the first layer, and the first layer has an NRC value that is greater than an NRC layer of the second layer.

24. The ceiling panel according to claim 20 , wherein the central region of the second major surface of the first layer and the central region of the first major surface of the second layer are in free floating contact with respect to one another.

25. The acoustic ceiling panel according to claim 20 , further comprising:

the first layer comprising a side surface extending between the first and second major surfaces of the first layer, the side surface of the first layer intersecting the second major surface of the first layer to form an upper edge of the first layer, the upper edge of the first layer forming the perimeter of the second major surface of the first layer;

the second layer comprising a side surface extending between the first and second major surfaces of the second layer, the side surface of the second layer intersecting the first major surface of the second layer to form a lower edge of the second layer, the lower edge of the second layer forming the perimeter of the first major surface of the second layer;

the upper edge of the first layer comprising a first upper edge portion, a second upper edge portion opposite the first upper edge portion, a third upper edge portion extending between the first and second upper edge portions, and a fourth upper edge portion opposite the third upper edge portion and extending between the first and second upper edge portions; and

the plurality of adhesive strips comprising a first adhesive strip extending adjacent to the first edge portion, a second adhesive strip extending adjacent to the second edge portion, a third adhesive strip extending adjacent to the third edge portion, and a fourth adhesive strip extending adjacent to the fourth edge portion.

26. The ceiling panel according to claim 25 wherein the first adhesive strip is spaced a first distance from the first edge portion, the second adhesive strip is spaced a second distance the second edge portion, the third adhesive strip extends is spaced a third distance from the third edge portion, and the fourth adhesive strip is spaced a fourth distance from the fourth edge portion.

27. The ceiling panel according to claim 25 , wherein the central region of the second major surface of the first layer occupies at least 95% of the second major surface of the first layer.

28. The ceiling panel according to claim 25 , wherein the first layer is a fiberglass layer and the second layer is a mineral wool layer.

29. An acoustic ceiling panel comprising:

a first layer comprising fiberglass and having a first major surface and a second major surface, the second major surface of the first layer defined by a perimeter, the second major surface of the first layer comprising a perimeter region adjacent the perimeter of the second major surface of the first layer and a central region circumscribed by the perimeter region of the second major surface of the first layer;

a second layer comprising mineral wool and having a first major surface and a second major surface, the first major surface of the second layer defined by a perimeter, the first major surface of the second layer comprising a perimeter region adjacent the perimeter of the first major surface of the second layer and a central region circumscribed by the perimeter region of the first major surface of the second layer; and

the perimeter region of the second major surface of the first layer coupled to the perimeter region of the first major surface by an adhesive, each of the central region of the second major surface of the first layer and the central region of the first major surface of the second layer being free of adhesive, to form a cohesive multilayer panel.