Abstract: A device for soundproofing a plate, includes a soundproofing part and a mounting part, wherein the mounting part is to be mounted secured to a border of the plate, the mounting part being mounted secured to the soundproofing part and having a second thickness h2 in contact with the soundproofing part, and the soundproofing part is made of a first material, and extends along a first length l in a first main direction, the soundproofing part having a first thickness h1 of the first material in a direction perpendicular to the first main direction the first thickness h1 varying, based on an x coordinate, along the first length l, proportionally to a value of xn, wherein n is a real number strictly greater than 1, from a minimal thickness h1min until h2, the first length l being so that h1min, is less than or equal to one third of h2.

Abstract: The invention relates to a textile structure, intended to be used as a sound-absorbing structure in acoustic ceiling panels and/or acoustic wall panels, consisting of (a) a nonwoven mat of glass fibers bound by a thermoset binder, the nonwoven mat having a surface density of between 20 and 200 g/m2 and (b) a continuous acoustic layer comprising from 80% to 95% by weight of particles, preferably mineral particles, and from 5% to 20% by weight of a thermoplastic polymer and/or elastomer binder, the textile structure having an open porosity of greater than 3%, preferably between 4% and 60%, and a static airflow resistance (determined according to the standard ISO 9053) of between 1000 and 3000 N·s·m?3, said continuous acoustic layer at least partially impregnating said nonwoven mat, and the particle size distribution of the particles having a D10 of between 0.1 and 0.5 ?m.

Abstract: A seal of a glazed element of an aircraft, the seal being configured to receive an edge of a first glazed unit, the first glazed unit having a first face, the seal including a first surface adapted to be mounted on the first face so as to receive the first glazed unit, wherein the seal includes a first damping part, the first damping part including the first surface, and wherein a first material forming the first damping part has a first loss factor ?1 strictly greater than 0.10.

Abstract: A glazed unit extending along a main surface and formed by a first material, includes a soundproofing zone that extends along a first length l along the main surface, the soundproofing zone having a first thickness h1 of the material, the first thickness h1 varying, as a function of a coordinate x, along the first length l in proportion to a value of xn, where n is a real number strictly greater than 1, from a minimum thickness h1min to a maximum thickness h1max, the first length l being predetermined such that the minimum thickness h1min is less than or equal to one third of the maximum thickness h1max.

Abstract: A device for soundproofing a plate, includes a soundproofing part and a mounting part, wherein the mounting part is to be mounted secured to a border of the plate, the mounting part being mounted secured to the soundproofing part and having a second thickness h2 in contact with the soundproofing part, and the soundproofing part is made of a first material, and extends along a first length l in a first main direction, the soundproofing part having a first thickness h1 of the first material in a direction perpendicular to the first main direction the first thickness h1 varying, based on an x coordinate, along the first length l, proportionally to a value of xn, wherein n is a real number strictly greater than 1, from a minimal thickness h1min until h2, the first length l being so that h1min, is less than or equal to one third of h2.

Abstract: A seal of a glazed element of an aircraft, the seal being configured to receive an edge of a first glazed unit, the first glazed unit having a first face, the seal including a first surface adapted to be mounted on the first face so as to receive the first glazed unit, wherein the seal includes a first damping part, the first damping part including the first surface, and wherein a first material forming the first damping part has a first loss factor ?1 strictly greater than 0.10.

Abstract: A mineral wool panel, intended to be used as an acoustic panel, has a surface density of greater than or equal to 3.2 kg/m2, an air flow resistivity of between 30 and 120 kPa·s/m2, and a Young's modulus of between 0.5 and 4 MPa.

Abstract: A glass wool panel, intended to be used as an acoustic panel, has a density of less than or equal to 130 kg/m3, an air flow resistivity of between 30 and 120 kPa·s/m2, a Young's modulus of between 0.5 and 4 MPa.

Abstract: The invention relates to a textile structure, intended to be used as a sound-absorbing structure in acoustic ceiling panels and/or acoustic wall panels, consisting of (a) a nonwoven mat of glass fibers bound by a thermoset binder, the nonwoven mat having a surface density of between 20 and 200 g/m2 and (b) a continuous acoustic layer comprising from 80% to 95% by weight of particles, preferably mineral particles, and from 5% to 20% by weight of a thermoplastic polymer and/or elastomer binder, the textile structure having an open porosity of greater than 3%, preferably between 4% and 60%, and a static airflow resistance (determined according to the standard ISO 9053) of between 1000 and 3000 N·s·m?3, said continuous acoustic layer at least partially impregnating said nonwoven mat, and the particle size distribution of the particles having a D10 of between 0.1 and 0.5 ?m.

Abstract: A building element includes a sheet of a rigid material and at least one nonlinear energy sink including a blade with two end parts and a nonlinear spring function intermediate part, a mass fixed to the nonlinear spring function intermediate part of the blade, and a fixing element allowing the two end parts of the blade to be fixed to a solid support in such a way that the nonlinear spring function intermediate part can oscillate about its position of equilibrium or its positions of equilibrium. The nonlinear energy sink is fixed rigidly to the sheet by the fixing element. The building element can be contained in a partition wall. Additionally, such an energy sink or building element can be used for reducing the acoustic transparency of a wall.

Abstract: A mineral wool panel, intended to be used as an acoustic panel, has a surface density of greater than or equal to 3.2 kg/m2, an air flow resistivity of between 30 and 120 kPa·s/m2, and a Young's modulus of between 0.5 and 4 MPa.

Abstract: A glass wool panel, intended to be used as an acoustic panel, has a density of less than or equal to 130 kg/m3, an air flow resistivity of between 30 and 120 kPa·s/m2, a Young's modulus of between 0.5 and 4 MPa.

Abstract: A building element includes a sheet of a rigid material and at least one nonlinear energy sink including a blade with two end parts and a nonlinear spring function intermediate part, a mass fixed to the nonlinear spring function intermediate part of the blade, and a fixing element allowing the two end parts of the blade to be fixed to a solid support in such a way that the nonlinear spring function intermediate part can oscillate about its position of equilibrium or its positions of equilibrium. The nonlinear energy sink is fixed rigidly to the sheet by the fixing element. The building element can be contained in a partition wall. Additionally, such an energy sink or building element can be used for reducing the acoustic transparency of a wall.

Abstract: A multilayer sound-absorbing covering includes (a) a support layer made of an organic polymer foam having an open porosity between 0.50 and 0.995, (b) a surface layer formed by a glass textile, having a static air flow resistance, measured according to the standard ISO 9053, between 105 N·s·m-4 and 106 N·s·m-4, (c) at the interface between the support layer (a) and the surface layer (b), a discontinuous adhesive layer having a surface density between 17 and 60 g/m2. There is also provided a process for manufacturing such a covering and the use of such a covering for improving the acoustic comfort of a room or of a building.

Abstract: A multilayer sound-absorbing covering includes (a) a support layer made of a nonwoven based on organic fibers having a tranverse multilobal cross section, (b) a surface layer formed by a glass textile, having a static air flow resistance, measured according to the standard ISO 9053, between 105 N·s·m?4 and 106 N·s·m?4, (c) at the interface between the support layer (a) and the surface layer (b), a discontinuous adhesive layer having a surface density between 17 and 60 g/m2. There is also provided a process for manufacturing such a covering and to the use of such a covering for improving the acoustic comfort of a room or of a building.

Abstract: A multilayer sound-absorbing covering includes (a) a support layer made of a nonwoven based on organic fibers having a tranverse multilobal cross section, (b) a surface layer formed by a glass textile, having a static air flow resistance, measured according to the standard ISO 9053, between 105 N·s·m?4 and 106 N·s·m?4, (c) at the interface between the support layer (a) and the surface layer (b), a discontinuous adhesive layer having a surface density between 17 and 60 g/m2. There is also provided a process for manufacturing such a covering and to the use of such a covering for improving the acoustic comfort of a room or of a building.

Abstract: A multilayer sound-absorbing covering includes (a) a support layer made of an organic polymer foam having an open porosity between 0.50 and 0.995, (b) a surface layer formed by a glass textile, having a static air flow resistance, measured according to the standard ISO 9053, between 105 N.s.m-4 and 106 N.s.m-4, (c) at the interface between the support layer (a) and the surface layer (b), a discontinuous adhesive layer having a surface density between 17 and 60 g/m2. There is also provided a process for manufacturing such a covering and the use of such a covering for improving the acoustic comfort of a room or of a building.