Acoustical structure

Patent metadata

Field	Value
Publication number	US-2016159028-A1
Application number	US-201314904963-A
Country	US
Kind code	A1
Filing date	Jul 15, 2013
Priority date	Jul 15, 2013
Publication date	Jun 9, 2016
Grant date	—

Abstract

A light-weight acoustical substrate is disclosed. In one embodiment, the substrate includes a substantially open core and outer facing layers. The core is comprised of a plurality of open, cells which extend between the facing layers. The cells may have numerous configurations, including honeycomb. The facing layers may be non-woven or woven glass scrims in some embodiments, A multi-layered acoustical structure is provided which in one non-limiting embodiment is comprised of two cores with outer facing layers and an interlayer between the cores.

First claim

1 . An acoustical substrate comprising:
a substantially open core having a plurality of open cells defined by cell walls extending perpendicular to opposing first and second major sides of the core; a first facing layer attached to the first major side of the core; and a second facing layer attached to the second major side of the core, wherein the first facing layer is porous and has an airflow resistance in a range of about and including 100 to 7500 mks rayls.

2 . The acoustical substrate of claim 1 , wherein the acoustical substrate has a noise reduction coefficient equal to or greater than 0.5.

3 .- 4 . (canceled)

5 . The acoustical substrate of claim 1 , wherein the first facing layer is coated with a high solids paint which configures the first facing layer to have the airflow resistance in a range of about and including 100 to 7500 mks rayls.

6 . The acoustical substrate of claim 1 , wherein the first facing layer is comprised of laminated non-woven glass fibers.

7 . The acoustical substrate of claim 1 , wherein the first and second facing layers have a thickness ranging from about and including 0.010 to 0.050 inches.

8 . The acoustical substrate of claim 1 , wherein the core is formed of 20 to 80 pound Kraft paper.

9 . (canceled)

10 . The acoustical substrate of claim 1 , wherein the core is formed of fiberglass or aluminum sheet.

11 . The acoustical substrate of claim 1 , wherein the core has at least one of honeycomb shaped cells and triangular shaped cells.

12 . (canceled)

13 . The acoustical substrate of claim 1 , wherein the core has a corrugated construction with cells having open ends disposed proximate to the first and second major sides of the core.

14 .- 16 . (canceled)

17 . The acoustical substrate of claim 1 , wherein cells create an open volume of the core which accounts for 90% or more of the total volume occupied by the core.

18 . The acoustical substrate of claim 1 , wherein the second facing layer is porous and has an airflow resistance in a range of about and including 100 to 1000 mks rayls.

19 .- 20 . (canceled)

21 . The acoustical substrate of claim 1 , wherein the first facing layer is formed of a woven glass scrim.

22 . An acoustical substrate comprising:
a substantially open core having a perimeter edge extending around lateral sides of the core, the core formed of a plurality of open cells defined by cell walls extending perpendicular to opposing first and second major sides of the core, the cells walls being formed of paper; a first facing layer attached to the first major side of the core; and a second facing layer attached to the second major side of the core, wherein the first and second facing layers are each porous and have an airflow resistance in a range of about and including 100 to 7500 mks rayls.

23 . The acoustical substrate of claim 22 , wherein the acoustical substrate has a noise reduction coefficient equal to or greater than 0.65.

24 . The acoustical substrate of claim 22 , wherein the first and second facing layers are coated with a high solids paint which configures the facing layers to have the airflow resistance in a range of about and including 100 to 7500 mks rayls.

25 . The acoustical substrate of claim 22 , wherein the first facing layer is comprised of laminated non-woven glass fibers.

26 . The acoustical substrate of claim 22 , wherein the first and second facing layers have a thickness ranging from about and including 0.010 to 0.050 inches.

27 . The acoustical substrate of claim 22 , wherein the core is formed of 20 to 80 pound Kraft paper.

28 . The acoustical substrate of claim 22 , wherein the substrate is frameless on all lateral sides around the perimeter edge of the core.

29 . (canceled)

30 . An acoustical structure comprising:
a first substrate comprising a substantially open first core having a plurality of open cells defined by cell walls extending perpendicular to opposing first and second major sides of the first core; a first facing layer attached to the first major side of the first core, wherein the first facing layer is porous and has an airflow resistance of about and including 100 to 1000 mks rayls; a second substrate comprising a substantially open second core having a plurality of open cells defined by cell walls extending perpendicular to opposing first and second major sides of the second core; a second facing layer attached to the second major side of the second core; and an interlayer disposed between the first and second substrates, the first and second substrates being bonded to opposite sides of the interlayer.

31 .- 44 . (canceled)

Assignees

• Armstrong World Ind Inc

Inventors

• Oleske Peter J

Classifications

• B32B3/12 Primary

  characterised by a layer of regularly- arranged cells, e.g. a honeycomb structure · CPC title

• B32B2307/102

  Insulating · CPC title

• B32B17/06

  comprising glass as the main or only constituent of a layer, next to another layer of a specific {material} · CPC title

• B32B5/024

  Woven fabric · CPC title

• B32B5/022

  Non-woven fabric · CPC title