摘要:
A sealing component is disclosed that is installed across an uneven surface without having dedicated segments for engaging raised and recessed portions of the uneven surface. The sealing component may include an elongated strip of compressible nonwoven material. The elongated strip may include an adhesive on one or two sides. In a pre-installation configuration, the strip may be wound into a coil.
摘要:
A multilayered acoustic panel (1) including: a substantially air impermeable outer membrane layer (3); an underlying second portion bonded to the membrane layer (3), the second portion including an intermediate layer (5); and an inner layer (7) underlying the second portion, the inner layer (7) having a plurality of apertures (6) therein, said apertures (6) being covered by the intermediate layer (5) of the second portion, wherein the membrane layer (3) and second portion are not bonded together where the membrane layer (3) overlies the apertures (6) such that those portions of the membrane layer (3) which overlie the apertures (6) are free to vibrate independently of the second portion in response to sound waves incident on the membrane layer (3).
摘要:
A board comprised of a wood structure having a first surface, a second surface, a first lateral edge, a second lateral edge and opposing ends. Sound attenuating elements embedded within the wood structure and stiffening elements positioned within the wood structure to coincide with the location of floor joist to which the board will be secured. The boards further forming a ceiling/floor structure by laying a single set of the boards adjacent to each other and securing them to the floor joists.
摘要:
A metal panel assembly that may be used in a number of different applications, particularly those that are concerned with improved stiffness and/or reduced vibration and noise. According to an exemplary embodiment, the metal panel assembly has a multi-layer or sandwich construction and includes a metal body layer, a sound damping adhesive layer, and a metal outer layer. The outer layer is bonded to the body layer via the adhesive layer and improves the stiffness and/or reduces vibrations in the metal panel assembly. The outer layer may include a number of contact sections that confront the body layer through the adhesive layer, as well as a number of raised sections that are spaced from the body layer and increase or otherwise improve the stiffness of the metal panel assembly. In one embodiment, the raised sections resemble channels and are generally arranged in a column-like pattern; in another embodiment, the raised sections resemble ribs and are generally arranged in a grid-like pattern.
摘要:
A support membrane designed to be arranged with a covering that can be applied to bearing areas such as floors or even under and on concrete screeds for a floor is provided. Said membrane can also be used in the composition of ceilings and in the composition of residential walls. The membrane includes a base layer made of fibers and designed to be arranged directly on the bearing area so as to absorb sound waves and to level the irregularities of the bearing area, a vapor barrier-anchoring membrane, and optionally an underlay designed to receive the covering and provide an anchor for the finishing products. Said support membrane is characterized in that the vapor barrier-anchoring membrane thereof is applied in liquid form by hot-melting directly on the base layer and on the underlay whenever the latter is used. Said support membrane improves heat transmission by reflectivity in the room in which the wall, floor or ceiling is located, as well as guaranteeing much more efficient predefined laying of the floor thanks to the anchoring membrane contained by the former, which reduces the tension effect the floor finish can cause.
摘要:
A roofing support system includes a spacer bracket having a lower edge adapted to pierce through a layer of insulation to abut in direct contact with a purlin, a fastener that fastens the spacer bracket to the purlin, and an upper portion adapted to support a beam above the insulation layer and in spaced relationship to the purlin.
摘要:
The present disclosure relates to a method for repairing a portion of an acoustic panel for a nacelle of an aircraft turbojet engine. The panel includes an acoustic skin in which a plurality of acoustic holes are drilled, a solid skin, and a cellular acoustic structure. The cellular acoustic structure, being arranged between the acoustic skin and the solid skin, has a plurality of cells, each of which has one or more drainage openings arranged in one or more of the walls forming each cell. The method includes a step of: defining a part of the acoustic panel to be cut; forming a cutting area closed by the acoustic skin; injecting a resin through the acoustic holes; positioning a replacement cellular acoustic structure in the cutting area and on the acoustic skin; forming a solid replacement skin on the replacement cellular acoustic structure.
摘要:
A moldable acoustic facing comprises cellulosic fibers and synthetic fibers entangled together. The acoustic facing has a basis weight of from about 1.5 to about 5.0 ounces per square yard (osy), a thickness of less than about 0.050″, a mean pore size of between about 8 microns and about 40 microns, and an elongation at break of at least twenty percent. The acoustic facing includes less than about five percent synthetic microfiber and has an acoustic resistance of at least about 250 Rayls.
摘要:
A method of making thermal insulation includes, forming a thermal insulation product precursor having randomly distributed inorganic fibers and about 5-500 wt. % heat-expandable hollow microspheres in dry or slurry form and having a polymeric shell and having disposed therein a blowing agent or gas, and calcium acetate or cupric carbonate, or a combination of calcium acetate and cupric carbonate, and heating the precursor to expand the microspheres.