# US 12,215,497 B2 · Acoustical panel > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,215,497 B2 - Document ID: US12215497B2 - Status: Granted - Kind: B2 - Application number: 17/874,663 - Filed: 2022-07-27 - Published: 2023-02-16 - Granted: 2025-02-04 - Earliest claimed: 2021-08-05 - Assignees: AWI Licensing LLC - Applicants: Armstrong World Industries, Inc. - Inventors: William H. Frantz; Anthony L. Wiker - Web page: https://patentgrep.com/patent/US12215497B2 ## CPC - E04B 1/86: slab-shaped - B32B 3/266: {characterised by an apertured layer, the apertures going through the whole thickness of the layer, e.g. expanded metal, perforated layer, slit layer regular cells B32B3/12} - B32B 5/022: {Non-woven fabric} - B32B 5/266: {next to one or more non-woven fabric layers} - B32B 5/271: {characterised by separate non-woven fabric layers that comprise chemically different strands or fibre material} - B32B 15/14: next to a fibrous or filamentary layer - B32B 21/02: {the layer being formed} of fibres, chips, or particles {, e.g. MDF, HDF, OSB, chipboard, particle board, hardboard} - B32B 21/10: Next to a fibrous or filamentary layer - B32B 2250/02: 2 layers - B32B 2262/02: Synthetic macromolecular fibres - B32B 2262/04: Cellulosic plastic fibres, e.g. rayon - B32B 2262/062: Cellulose fibres, e.g. cotton - B32B 2262/08: Animal fibres, e.g. hair, wool, silk - B32B 2262/101: Glass fibres - B32B 2307/102: Insulating - B32B 2307/3065: Flame resistant or retardant, fire resistant or retardant - B32B 2419/04: Tiles for floors or walls - B32B 2419/06: Roofs, roof membranes - B32B 2607/00: Walls, panels - E04B 2001/8461: {layered} - E04B: GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS (border constructions of opening in walls, floors or ceilings E06B1/00; {electromagnetic shielding H05K9/0001}) - B32B: LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM ## Abstract Described herein are building panels and surface covering systems useful for spaces requiring acoustic control and design flexibility, and methods to prepare the same. Such building panels and surface covering systems comprise an acoustic building panel having a first major surface opposite a second major surface and a side surface extending there-between, the acoustic building panel comprising a body having an upper surface opposite a lower surface and side surfaces extending there-between; a fleece having a first side and a second side; wherein the first side of the fleece is in contact with the upper surface of the body; wherein the body and fleece are laminated; and wherein the fleece has a resistivity of about 826,100 to about 1,090,900 Pa*s/m2. In certain embodiments, building panels and surface covering systems have superior fire resistant qualities. ## Claims ### Claim 1 An acoustic building panel comprising a first major surface opposite a second major surface and a third major side surface extending there-between, the acoustic building panel comprising: a body comprising an upper surface opposite a lower surface and a side surface extending there-between; a fleece having a first side opposite a second side and a basis weight ranging from about 40 g/m2 to about 100 g/m2; wherein the first side of the fleece is in contact with the upper surface of the body; wherein the body and fleece are laminated; and wherein the fleece has a flow resistivity of about 826,100 to about 1,090,900 Pa*s/m2. ### Claim 2 (depends on 1) The acoustic building panel of claim 1, wherein the body comprises a nonwoven material. ### Claim 3 (depends on 1) The acoustic building panel of claim 1, wherein the body comprises aspen wood, non-woven perforated metal, or wood. ### Claim 4 (depends on 1) The acoustic building panel of claim 1, wherein the fleece comprises fiberglass, sheep wool, cellulosic material, or non-woven polymer. ### Claim 5 (depends on 4) The acoustic building panel of claim 4, wherein the cellulosic material is selected from cotton, paper, or combinations thereof. ### Claim 6 (depends on 4) The acoustic building panel of claim 4, wherein the non-woven polymer is selected from polyester, polyolefin, polyaramid, or combinations thereof. ### Claim 7 (depends on 1) The acoustic building panel of claim 1, wherein the body comprises fire retardant selected from magnesium oxide, sodium silicate, magnesium sulfate, calcium carbonate, or a combination thereof. ### Claim 8 (depends on 1) The acoustic building panel of claim 1, wherein the acoustic building panel has a noise reduction coefficient (NRC) of about 0.65 to about 0.90 as determined in an E-400 mount. ### Claim 9 An acoustic building panel having a first major surface opposite a second major surface and a third major side surface extending there-between, the acoustic building panel comprising: a body having an upper surface opposite a lower surface and side surfaces extending there-between; a fiberglass fleece having a first side opposite a second side and a basis weight ranging from about 40 g/m2 to about 100 g/m2; wherein the first side of the fleece is in contact with the upper surface of the body and at least a portion of the side surfaces of the body; wherein the body and fleece are laminated; and wherein the fleece has a flow resistivity of about 826,100 to about 1,090,900 Pa*s/m2. ### Claim 10 (depends on 9) The acoustic building panel of claim 9, wherein the body comprises a nonwoven material. ### Claim 11 (depends on 9) The acoustic building panel of claim 9, wherein the distance between the upper surface and lower surface is about 0.8 inches to about 2.5 inches. ### Claim 12 (depends on 11) The acoustic building panel of claim 11, wherein the distance between the upper surface and lower surface is about 0.8 inches to about 1.2 inches. ### Claim 13 (depends on 11) The acoustic building panel of claim 11, wherein the distance between the upper surface and lower surface is about 1.0 inch. ### Claim 14 (depends on 9) The acoustic building panel of claim 9, wherein the body comprises fire retardant comprising one or more of magnesium oxide, sodium silicate, magnesium sulfate, and calcium carbonate. ### Claim 15 (depends on 9) The acoustic building panel of claim 9, wherein the acoustic building panel has a noise reduction coefficient (NRC) of about 0.65 to about 0.90 as determined in an E-400 mount. ### Claim 16 A surface covering system comprising: a plurality of acoustic building panels, each of the panels comprising a first major surface opposite a second major surface and a third major side surface extending there-between, the acoustic building panel further comprising: a body having an upper surface opposite a lower surface and side surfaces extending there-between; a fleece having a first side opposite a second side and a basis weight ranging from about 40 g/m2 to about 100 g/m2; wherein the first side of the fleece is in contact with the upper surface of the body; wherein the body and fleece are laminated; and wherein the fleece has a flow resistivity of about 826,100 to about 1,090,900Pa*s/m2; and an adhesive tape configured to detachably couple the panels to a substrate, the adhesive tape comprising: a substrate-side adhesive component comprising at least one adhesive layer; a panel-side adhesive component comprising at least one adhesive layer; and a release component; wherein the panels are detachably coupled to the substrate by the adhesive tape in a side-by-side arrangement to cover the substrate, the at least one adhesive layer of the substrate-side adhesive component being adhered to the substrate, the at least one adhesive layer of the panel-side adhesive component being adhered to the rear surfaces of the panels, and the release component being positioned between the substrate-side adhesive component and the panel-side adhesive component. ### Claim 17 (depends on 16) The surface covering system of claim 16, wherein the distance between the upper surface and lower surface is about 0.8 inches to about 2.5 inches. ### Claim 18 (depends on 16) The surface covering system of claim 16, wherein the acoustic building panel has a noise reduction coefficient (NRC) of about 0.65 to about 0.90 as determined in an E-400 mount. ### Claim 19 (depends on 16) The surface covering system of claim 16, wherein the acoustic building panel has a noise reduction coefficient (NRC) of about 0.55 to about 0.60 as determined in a D-20 mount. ### Claim 20 (depends on 16) The surface covering system of claim 16, wherein the acoustic building panel is a wall or ceiling panel.