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 second 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 second region circumscribed by the perimeter region of the first major surface of the second layer;

wherein the second major surface of the first layer is coupled to the first major surface of the second layer and each of the second region of the second major surface of the first layer and the second region of the first major surface of the second layer being free of adhesive, whereby the first and second layers are coupled to each other to form a multilayer panel; and

wherein the second 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.

2. The acoustic ceiling panel according to claim 1 , wherein the second region of the second major surface of the first layer is in contact with the second region of the first major surface of the second layer.

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

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

5. 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.

6. The acoustic ceiling panel according to claim 5 , 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.

7. The acoustic ceiling panel according to claim 1 , wherein the second region of the second major surface of the first layer and the second region of the first major surface of the second layer are in free floating contact with respect to one another.

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

9. The acoustic 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.

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

11. An acoustic ceiling panel having a first major surface opposite a second major surface, the acoustic ceiling panel comprising:

a first layer comprising fiberglass and having a first NRC value and a first CAC value, the first layer comprising a first major surface and a second major surface, and the second major surface of the first layer comprising a first region;

a second layer comprising mineral wool and having a second CAC value and a second NRC value, the second layer comprising a first major surface and a second major surface, and the first major surface of the second layer comprising a second region;

the second major surface of the first layer is coupled to the first major surface of the second layer and each of the first region and second region being free of adhesive; and

wherein the second CAC value is greater than the first CAC value, and the first NRC value is greater than the second NRC value and wherein the first region of the second major surface of the first layer occupies at least 70% of the second major surface of the first layer.

12. The acoustic ceiling panel according to claim 11 , wherein the first region is in contact with the second region.

13. The acoustic ceiling panel according to claim 11 , wherein the acoustic ceiling panel has a third CAC value as measured between the first major surface and the second major surface of the acoustic ceiling panel, the third CAC value being equal to or greater than the CAC value of the second CAC value.

14. The acoustic ceiling panel according to claim 13 , wherein the acoustic ceiling panel has a third NRC value of 0.90 or greater.

15. The acoustic ceiling panel according to claim 13 , wherein the third CAC value is at least 35, and the first NRC value is at least 0.7.

16. 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 comprising a first region and a second region;

a second layer comprising a first major surface and a second major surface, the first major surface of the second layer comprising a first region and a second region; and

wherein each of the second region of the second major surface of the first layer and the second region of the first major surface of the second layer being free of adhesive, whereby the first and second layers are coupled to each other to form a multilayer panel, and wherein the second 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.

17. The acoustic ceiling panel according to claim 16 , wherein the first layer is a fiberglass layer and the second layer is a mineral wool layer.

18. The acoustic ceiling panel according to claim 16 , wherein the second region of the second major surface of the first layer is in contact with the second region of the first major surface of the second layer.

19. The acoustic ceiling panel according to claim 16 , 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.