# US 12,006,683 B2 · Framed laminated fiberglass panel and method of manufacture > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,006,683 B2 - Document ID: US12006683B2 - Status: Granted - Kind: B2 - Application number: 17/377,013 - Filed: 2021-07-15 - Published: 2022-01-20 - Granted: 2024-06-11 - Earliest claimed: 2020-07-15 - Assignees: CertainTeed Canada, Inc. - Applicants: CertainTeed Canada, Inc. - Inventors: Luigi Bartella; Srirathakrishna Sivapathasuntharam; Michael J. Lembo - Web page: https://patentgrep.com/patent/US12006683B2 ## CPC - E04B 9/0428: {having a closed frame around the periphery} - B32B 3/02: characterised by features of form at particular places, e.g. in edge regions {(non-uniform thickness B32B3/263)} - B32B 3/06: for securing layers together; for attaching the product to another member, e.g. to a support {, or to another product, e.g. groove/tongue, interlocking} - B32B 3/08: characterised by added members at particular parts {(layer formed of separate pieces of material which are juxtaposed side-by-side B32B3/14, B32B3/18)} - B32B 3/085: {spaced apart pieces on the surface of a layer} - B32B 3/263: {characterised by a layer having non-uniform thickness} - B32B 3/30: characterised by a layer formed with recesses or projections, e.g. {hollows, grooves, protuberances, ribs (apertured layer B32B3/266; layer with cavities or internal voids B32B3/26)} - B32B 5/02: characterised by structural features of a {fibrous or filamentary} layer {(layer formed of metallic wires B32B15/02; layer formed of natural mineral fibres B32B19/02; layer formed of wood fibres B32B21/02)} - B32B 5/26: another layer {next to it} also being fibrous or filamentary {(relative arrangement of fibres or filaments of different layers B32B5/12)} - B32B 7/02: Physical, chemical or physicochemical properties - B32B 7/12: using interposed adhesives or interposed materials with bonding properties - E04B 9/045: {being laminated} - G10K 11/162: Selection of materials - G10K 11/168: Plural layers of different materials, e.g. sandwiches - B32B 2262/101: Glass fibres - B32B 2307/102: Insulating - B32B 2307/72: Density - B32B 2307/732: Dimensional properties - B32B 2419/00: Buildings or parts thereof - 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 - G10K: SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR ## Abstract The present disclosure relates generally to fiberglass panels, for example, suitable for acoustic ceiling surfaces. The present disclosure relates more particularly to an acoustic panel having a top surface, a bottom surface, and a perimeter edge. The acoustic panel includes a layered fiberglass panel body including a core fiberglass layer and a high density fiberglass layer secured to a lower face of the core fiberglass layer. The high density fiberglass layer has a higher density than the core fiberglass layer. The layered fiberglass panel body includes an outward projection at the perimeter edge of the acoustic panel that is formed by the high density fiberglass layer and a portion of the core fiberglass layer. A supporting perimeter frame extends around the outer edge of the core fiberglass layer, and the outward projection of the layered fiberglass panel body extends outward beneath the supporting perimeter frame. ## Claims ### Claim 1 An acoustic panel having a top surface, a bottom surface, and a perimeter edge, the acoustic panel comprising: a layered fiberglass panel body comprising: a core fiberglass layer including an upper face, a lower face, and an outer edge, and a high density fiberglass layer secured to the lower face of the core fiberglass layer, the high density fiberglass layer having a higher density than the core fiberglass layer, wherein the layered fiberglass panel body includes an outward projection at the perimeter edge of the acoustic panel that is formed by the high density fiberglass layer and a portion of the core fiberglass layer; and a supporting perimeter frame extending around the outer edge of the core fiberglass layer, wherein the outward projection of the layered fiberglass panel body extends outward beneath the supporting perimeter frame and obscures the supporting perimeter frame from view at the bottom surface of the acoustic panel. ### Claim 2 (depends on 1) The acoustic panel according to claim 1, wherein the outward projection extends to the perimeter edge of the acoustic panel. ### Claim 3 (depends on 1) The acoustic panel according to claim 1, wherein the high density fiberglass layer extends to the perimeter edge of the acoustic panel around an entire circumference of the acoustic panel. ### Claim 4 (depends on 1) The acoustic panel according to claim 1, wherein an outer edge of the high density fiberglass layer forms part of the outward projection. ### Claim 5 (depends on 4) The acoustic panel according to claim 4, wherein an outer edge of the high density fiberglass layer is angled. ### Claim 6 (depends on 5) The acoustic panel according to claim 5, wherein the outer edge of the high density fiberglass layer is attached to the supporting perimeter frame. ### Claim 7 (depends on 1) The acoustic panel according to claim 1, wherein the portion of the core fiberglass layer that forms part of the outward projection is adjacent to the lower face of the core fiberglass layer. ### Claim 8 (depends on 7) The acoustic panel according to claim 7, wherein the portion of the core fiberglass layer that forms part of the projection is angled. ### Claim 9 (depends on 1) The acoustic panel according to claim 1, wherein the high density fiberglass layer is laminated to the core fiberglass layer. ### Claim 10 (depends on 1) The acoustic panel according to claim 1, wherein the perimeter frame includes a vertical web extending along the perimeter edge of the acoustic panel from a top end to a bottom end, and wherein the bottom end of the vertical web tapers to a reduced thickness. ### Claim 11 (depends on 10) The acoustic panel according to claim 10, wherein a portion of the inner surface of the vertical web at the bottom end of the vertical web is angled toward the perimeter edge of the acoustic panel so as to provide the reduced thickness. ### Claim 12 (depends on 1) The acoustic panel according to claim 1, wherein the perimeter frame includes an intermediate flange and the layered fiberglass panel body includes a slot that receives the intermediate flange. ### Claim 13 (depends on 12) The acoustic panel according to claim 12, wherein the intermediate flange includes prongs that extend toward the top surface of the acoustic panel. ### Claim 14 (depends on 1) The acoustic panel according to claim 1, wherein the perimeter frame includes an upper arm that extends over the layered fiberglass panel body. ### Claim 15 (depends on 14) The acoustic panel according to claim 14, wherein the upper arm includes prongs that extend toward the bottom surface of the acoustic panel. ### Claim 16 (depends on 1) The acoustic panel according to claim 1, further comprising a veil at the bottom surface of the acoustic panel covering the high density fiberglass layer. ### Claim 17 (depends on 1) The acoustic panel according to claim 1, wherein the supporting perimeter frame includes a plurality of frame members. ### Claim 18 (depends on 1) The acoustic panel according to claim 1, wherein an outer surface of the perimeter frame includes a groove configured to receive a tool for removing the acoustic panel from a ceiling grid. ### Claim 19 (depends on 18) The acoustic panel according to claim 18, wherein the outer surface of the perimeter frame is angled inward toward the bottom surface of the acoustic panel. ### Claim 20 (depends on 1) A method of manufacturing an acoustic panel according to claim 1, the method comprising: attaching a high density fiberglass layer to a core fiberglass layer so as to form a layered fiberglass panel body, wherein a density of the high density fiberglass layer is higher than a density of the core fiberglass layer; machining the layered fiberglass panel body so as to form a countered outer edge; and surrounding the outer edge of the layered fiberglass panel body with a supporting perimeter frame.