Described herein is a coated acoustic building material comprising a body comprising a first major surface opposite a second major surface; a coating having an upper surface opposite a lower surface, the lower surface of the coating facing the first major surface of the body, the coating comprising: polymeric binder having a glass transition temperature less than 0° C.; and a filler; wherein the coating is present as coalesced particles atop the first major surface in an amount ranging from about 210 g/m.sup.2 to about 1,300 g/m.sup.2.

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/m.sup.2 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.Math.s.Math.m.sup.−3, said continuous acoustic layer at least partially impregnating said nonwoven mat, and the particle size distribution of the particles having a D.sub.10 of between 0.1 and 0.5 μm.

It also relates to a process for manufacturing such a textile structure and to a ceiling panel or wall panel coated on one of these faces with such a textile structure.

A sound absorbing cell according to an exemplary embodiment of the present invention is formed of a plurality of plates that are stacked while interposing an air layer therebetween, wherein the plurality of plates include: a reflective plate that is disposed outermost from a space where sound is generated; and a microperforated plate that is stacked on the reflective plate and having a plurality of holes perforated therein.

A composite structure for improving the acoustical properties of a low NRC membrane including a sound absorbing layer and a porous, scrim covered, perforated drywall layer.

A method of fabricating an acoustic device includes forming a plurality of holes in a panel, disposing the panel in a support frame, and heating the panel to a temperature such that the panel sags while disposed in the support frame and each hole of the plurality of holes is modified.

The invention relates to a multi-layered structure (1) for the production of a floor or wall covering, the structure comprising: a first assembly (E) successively comprising at least: a transparent wear layer (E1) made of polyvinyl chloride; a decorative layer (E2) bonded to the wear layer (E1); a backing layer (E3), bonded to the decorative layer (E2), produced from plasticized and loaded polyvinyl chloride; a foam layer (2), bonded to the backing layer (E3), imparting sound-insulating properties to the structure, and having a lower side intended to be in contact with the floor or wall.

According to the invention: the first assembly (E) comprises a tensile modulus for 1% elongation greater than 5 MPa, and a flexural modulus at 3.5% between 10 MPa and 20 MPa, measured in accordance with ISO 178:2019 standard; the foam layer (2) is a cross-linked polyolefin foam layer, having a thickness between 0.5 mm and 2 mm, and a density between 60 kg/m.sup.3 and 120 kg/m.sup.3.

The invention relates to a structural system (1) with acoustic insulation properties, comprising modular mountable enclosures (2) for configuring a construction (3), the enclosures (2) comprising at least three layers (4, 5, 6) joined together by means of fasteners (7a, 7b, 7c) with discreet elastic elements, the system having at least one second layer (5) disposed in an intermediate position between the first layer (4) and the third layer (6).

A motor vehicle roof shell having a rigid composite component having an inner side facing a vehicle interior, and an acoustic insulation layer disposed on the inner side of the composite component. The panel-type rigid composite component has at least one tray-like recess on its inner side, said recess being filled with an open-pored foam material which forms the acoustic insulation layer and whose surface is flush with a surface of the composite component surrounding the recess. A motor vehicle roof shell motor vehicle having a panel-type rigid composite component having an inner side, which faces the vehicle interior, and an acoustic insulation layer disposed on the inner side of the composite component, wherein the acoustic insulation layer is formed by at least one rigid-foam or semi-rigid-foam plate which is bonded to the inner side of the composite component and compressed that its volume is reduced compared to preassembly state.

An example acoustic tile is disclosed having a structure with at least one layer. A plurality of openings are formed in the at least one layer of the structure. The openings are configured to direct sound waves hitting the structure in multiple different directions through the at least one layer to absorb a majority of the sound waves and inhibit the sound waves hitting the structure from reflecting off of the structure. In an example, the openings are juxtaposed, different sizes, different orientations, and/or different numbers of openings on separate layers.

Described herein is an acoustic building panel comprising: a body comprising a fibrous material and having a first major surface opposite a second major surface and a side surface extending there-between, the fibrous material comprising polyester fiber in an amount of at least 70 wt. % based on the total weight of the fibrous material; wherein the body has a bulk density as measured between the first major surface, the second major surface, and the side surface, the bulk density ranging from about 4.8 lb./ft.sup.3 to about 6.0 lb./ft.sup.3.