# US 10,480,184 B2 · Sound-permeable lining for acoustic plasterboards > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,480,184 B2 - Document ID: US10480184B2 - Status: Granted - Kind: B2 - Application number: 15/311,209 - Filed: 2014-08-22 - Published: 2017-03-23 - Granted: 2019-11-19 - Earliest claimed: 2014-05-15 - Assignees: Knauf Gips KG - Applicants: Knauf Gips KG; 3D Coatings GmbH & Co. KG - Inventors: Claus-Peter Berneth; Matthias Schaefer; Gottfried Philipp; Andreas Marquardt - Web page: https://patentgrep.com/patent/US10480184B2 ## CPC - E04B 1/8409: {sheet-shaped} - E04B 1/86: slab-shaped - E04B 9/0464: {having irregularities on the faces, e.g. holes, grooves} - E04F 13/0867: {having acoustic absorption means on the visible surface} - G10K 11/16: Methods or devices for protecting against, or for damping, noise or other acoustic waves in general (G10K11/36 takes precedence) - G10K 11/168: Plural layers of different materials, e.g. sandwiches - 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}) - E04F: FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS (windows, doors E06B) - 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 Sound-permeable lining (1) for covering perforations (21) shaped in an acoustic plasterboard (2). The sound-permeable lining (1) comprises a first ply (12) of a fleece material and attached thereto a second ply (14) which is arranged in between of the first ply (12) and the acoustic plasterboard (2) to which the sound-permeable lining (1) is to be applied. The second ply (14) being of a foil material having a second opacity O2 and a plurality of through-holes (141) formed therein. The first ply (12) has a first opacity O1 so that the through-holes (141) formed in the second ply (14) are invisible through the first ply (12) and so that the applied sound-permeable lining (1) has an overall opacity O12 to allow for optically covering the perforations (21) shaped in the acoustic plasterboard (2) and an overall air flow resistivity Rs12 to allow for the penetration of air so that sound can propagate via the sound-permeable lining (1). ## Claims ### Claim 1 A sound-permeable lining (1) for covering perforations (21) shaped in an acoustic plasterboard (2), the sound-permeable lining (1) comprising a first ply (12) of a fleece material having an inner structure so that the first ply (12) has a first air flow resistivity RS1 which allows for the penetration of air so that sound can propagate via the first ply (12) and attached thereto and a second ply (14) which is arranged in between of the first ply (12) and the acoustic plasterboard (2) to which the sound-permeable lining (1) is to be applied, the second ply (14) being of a foil material having a second opacity O2 and a plurality of through-holes (141) formed therein which are of a size and shape so that the second ply (14) has a second air flow resistivity RS2 which allows for the penetration of air so that sound can propagate via the second ply (14), wherein the first ply (12) has a first opacity O1 so that the through-holes (141) formed in the second ply (14) are invisible through the first ply (12) and so that the applied sound-permeable lining (1) has an overall opacity O12 to allow for optically covering the perforations (21) shaped in the acoustic plasterboard (2) and an overall air flow resistivity RS12 to allow for the penetration of air so that sound can propagate via the sound-permeable lining (1) and the second ply (14) comprises a light reflective surface (142) at the side to be attached to the first ply (12) to allow for optically reflecting the first ply (2) thereon. ### Claim 2 (depends on 1) The sound-permeable lining (1) according claim 1, wherein the overall air flow resistivity RS12 is less than 300 Pas/m and the overall opacity O12 is in the range of 92% to 98%. ### Claim 3 (depends on 1) The sound-permeable lining (1) according to claim 1, wherein the first ply (12) has the first opacity O1 in between of 50% to 75% to allow for covering the through-holes (141) in the second ply (14) of a size smaller than 500 μm in diameter. ### Claim 4 (depends on 1) The sound-permeable lining (1) according to claim 1, wherein the fleece material has synthetic fibres, natural fibres and mixtures of synthetic fibres and natural fibres. ### Claim 5 (depends on 1) The sound-permeable lining (1) according to claim 1, wherein the first ply (12) has an areal density in between of 60 g/m2 and 130 g/m2. ### Claim 6 (depends on 1) The sound-permeable lining (1) according to claim 1, wherein the first ply (12) comprises color pigments. ### Claim 7 (depends on 1) The sound-permeable lining (1) according to claim 1, wherein the second ply (14) is a plastic foil to which an aluminum layer is applied by evaporation deposition. ### Claim 8 (depends on 1) The sound-permeable lining (1) according to claim 1, wherein the second ply (14) is of a thickness less than 50 μm. ### Claim 9 (depends on 1) The sound-permeable lining (1) according to claim 1, wherein the through-holes (141) are arranged in an areal density of more than 15 through-holes/cm2, and are of a size in diameter smaller than 500 μm so that the integrated cross-sectional area of the through-holes (141) per area of foil is of 0.05 to 0.20 cm2/cm2. ### Claim 10 (depends on 1) The sound-permeable lining (1) according to claim 1, wherein the first ply (12) is attached to the second ply (14) by a plurality of glue dots (13), each glue dot (13) being arranged at a location different from locations of the second ply (14) at which such a through-hole (141) of the plurality of through-holes (141) is formed. ### Claim 11 (depends on 10) The sound-permeable lining (1) according to claim 10, wherein each glue dot (13) is of a diameter of less than 700 μm. ### Claim 12 (depends on 10) The sound-permeable lining (1) according to claim 10, wherein each glue dot (13) comprises a heat-activated adhesive material or a pressure sensitive adhesive materials. ### Claim 13 (depends on 1) The sound-permeable lining (1) according to claim 1 further comprising a third ply (15) which is arranged in between of the second ply (14) and the acoustic plasterboard (2) to which the sound-permeable lining (1) is to be applied, the third ply (15) being capable of forming a contact layer so as to increase the adhesive attachment of the sound-permeable lining (1) applied to the acoustic plasterboard (2). ### Claim 14 (depends on 1) An acoustic plasterboard (2) having applied thereto a sound-permeable lining (1) according to claim 1, the sound-permeable lining (1) being applied so that a single sound-permeable lining (1) covers perforations shaped in different acoustic plasterboards (2). ### Claim 15 (depends on 4) The sound-permeable lining (1) according to claim 4, wherein the fleece material has mixtures of polyethylene terephthalate fibers and cellulose fibers. ### Claim 16 (depends on 8) The sound-permeable lining (1) according to claim 8, wherein the second ply (14) is of a thickness less than 12 μm. ### Claim 17 (depends on 11) The sound-permeable lining (1) according to claim 11, wherein each glue dot (13) is of a diameter of less than 300 μm. ### Claim 18 (depends on 12) The sound-permeable lining (1) according to claim 12, wherein the heat-activated adhesive material is selected from a polyolefin, polyamides, polyesters or polyurethanes. ### Claim 19 (depends on 12) The sound-permeable lining (1) according to claim 12, wherein the pressure sensitive adhesive material is selected from rubbers or UV-acrylates. ### Claim 20 (depends on 2) The sound-permeable lining according to claim 2, wherein the overall opacity O12 is 95%. ### Claim 21 (depends on 9) The sound-permeable lining (1) according to claim 9, wherein the through-holes (141) are arranged in an areal density of more than 50 through-holes/cm2. ### Claim 22 A sound-permeable lining (1) for covering perforations (21) shaped in an acoustic plasterboard (2), the sound-permeable lining (1) comprising a first ply (12) of a fleece material having an inner structure so that the first ply (12) has a first air flow resistivity RS1 which allows for the penetration of air so that sound can propagate via the first ply (12) and attached thereto and a second ply (14) which is arranged in between of the first ply (12) and the acoustic plasterboard (2) to which the sound-permeable lining (1) is to be applied, the second ply (14) being of a foil material having a second opacity O2 and a plurality of through-holes (141) formed therein which are of a size and shape so that the second ply (14) has a second air flow resistivity RS2 which allows for the penetration of air so that sound can propagate via the second ply (14), wherein the first ply (12) has a first opacity O1 so that the through-holes (141) formed in the second ply (14) are invisible through the first ply (12) and so that the applied sound-permeable lining (1) has an overall opacity O12 to allow for optically covering the perforations (21) shaped in the acoustic plasterboard (2) and an overall air flow resistivity RS12 to allow for the penetration of air so that sound can propagate via the sound-permeable lining (1) and the second ply (14) is a plastic foil to which an aluminum layer is applied by evaporation deposition.