Classifications

• • E—FIXED CONSTRUCTIONS
  • E04—BUILDING
  • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
  • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
  • E04B1/62—Insulation or other protection; Elements or use of specified material therefor
  • E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
  • E04B1/82—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to sound only
  • E04B1/84—Sound-absorbing elements
  • E04B1/86—Sound-absorbing elements slab-shaped
• • E—FIXED CONSTRUCTIONS
  • E04—BUILDING
  • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
  • E04B9/00—Ceilings; Construction of ceilings, e.g. false ceilings; Ceiling construction with regard to insulation
  • E04B9/001—Ceilings; Construction of ceilings, e.g. false ceilings; Ceiling construction with regard to insulation characterised by provisions for heat or sound insulation
• • E—FIXED CONSTRUCTIONS
  • E04—BUILDING
  • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
  • E04B9/00—Ceilings; Construction of ceilings, e.g. false ceilings; Ceiling construction with regard to insulation
  • E04B9/04—Ceilings; Construction of ceilings, e.g. false ceilings; Ceiling construction with regard to insulation comprising slabs, panels, sheets or the like
  • E04B9/045—Ceilings; Construction of ceilings, e.g. false ceilings; Ceiling construction with regard to insulation comprising slabs, panels, sheets or the like being laminated
• • E—FIXED CONSTRUCTIONS
  • E04—BUILDING
  • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
  • E04B9/00—Ceilings; Construction of ceilings, e.g. false ceilings; Ceiling construction with regard to insulation
  • E04B9/22—Connection of slabs, panels, sheets or the like to the supporting construction
  • E04B9/24—Connection of slabs, panels, sheets or the like to the supporting construction with the slabs, panels, sheets or the like positioned on the upperside of, or held against the underside of the horizontal flanges of the supporting construction or accessory means connected thereto
  • E04B9/241—Connection of slabs, panels, sheets or the like to the supporting construction with the slabs, panels, sheets or the like positioned on the upperside of, or held against the underside of the horizontal flanges of the supporting construction or accessory means connected thereto with the slabs, panels, sheets or the like positioned on the upperside of the horizontal flanges of the supporting construction
• • E—FIXED CONSTRUCTIONS
  • E04—BUILDING
  • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
  • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
  • E04B1/62—Insulation or other protection; Elements or use of specified material therefor
  • E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
  • E04B1/82—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to sound only
  • E04B2001/8263—Mounting of acoustical elements on supporting structure, e.g. framework or wall surface
  • E04B2001/8281—Flat elements mounted parallel to a supporting surface with an acoustically active air gap between the elements and the mounting surface
• • E—FIXED CONSTRUCTIONS
  • E04—BUILDING
  • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
  • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
  • E04B1/62—Insulation or other protection; Elements or use of specified material therefor
  • E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
  • E04B1/82—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to sound only
  • E04B1/84—Sound-absorbing elements
  • E04B2001/8457—Solid slabs or blocks
  • E04B2001/8461—Solid slabs or blocks layered
• • E—FIXED CONSTRUCTIONS
  • E04—BUILDING
  • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
  • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
  • E04B1/62—Insulation or other protection; Elements or use of specified material therefor
  • E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
  • E04B1/82—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to sound only
  • E04B1/84—Sound-absorbing elements
  • E04B2001/8457—Solid slabs or blocks
  • E04B2001/8476—Solid slabs or blocks with acoustical cavities, with or without acoustical filling
  • E04B2001/848—Solid slabs or blocks with acoustical cavities, with or without acoustical filling the cavities opening onto the face of the element

Definitions

• the invention relates to an acoustic insulation product intended to be used in particular as a suspended ceiling tile.
• Suspended ceilings are widely used in the tertiary sector to conceal technical equipment above rooms.
• the space above a suspended ceiling is called the plenum. From an acoustic point of view, suspended ceilings serve two main functions:
• Suspended ceiling tiles are often made of a fiber-based panel such as mineral wool, or other porous material, on which are attached:
• the invention provides a sound insulation product comprising:
• a panel made of porous material, in particular based on foam or fibers comprising a first face, called the rear face, intended to be turned towards a wall such as a ceiling or a wall, and a second face, called the front face, located opposite the rear face,
• the rear layer which adheres to or is bonded or coupled at least in part to the rear face of the panel made of porous material, the rear layer having an air flow resistance which is between 5 kPa.s / m and 20 kPa.s / m, preferably between 7 kPa.s / m and 15 kPa.s / m.
• the rear layer is a fibrous web in woven or non-woven fabric, a paint layer or even a layer of compressed mineral wool, or even a plastic film, or any other material in the form of a membrane or film.
• the rear layer has a thickness less than or equal to 1 cm, preferably less than or equal to 1 mm.
• the rear layer is micro-perforated.
• the panel of porous material is a panel of mineral and / or vegetable and / or synthetic wool, a panel of open porosity foam or else a panel of agglomerated fibers obtained. wet.
• the panel of porous material has a surface density of between 0.8 kg / m 2 and 10 kg / m 2 .
• the panel of porous material has an air flow resistivity of between 30 kPa.s / m 2 and 120 kPa.s / m 2 , preferably between 50 kPa.s / m 2 and 110 kPa.s / m2, or even between 50 kPa.s / m 2 and 100 kPa.s / m 2 , or even between 50 kPa.s / m 2 and 90 kPa.s / m 2 , or even between 50 kPa.s / m 2 / m 2 and 80 kPa.s / m 2
• the panel made of porous material has a Young's modulus of between 0.1 MPa and 4 MPa, preferably between 0.5 and 4 MPa, even more preferably between 0.8 and 4 MPa, or even between 1, 2 MPa and 4 MPa, or else between 1, 5 MPa and 4 MPa, or between 2 MPa and 4 MPa.
• the panel of porous material has a thickness of between 10 mm and 60 mm.
• the sound insulation product further comprises a second layer, called the front layer, in the form of a veil, a membrane, a film, a paint or a coating of plaster, bonded or glued to the front face of the panel of porous material, this front layer having a resistance to air flow less than or equal to 1 kPa.s / m, preferably less than or equal to 0.5 kPa.s / m.
• the front layer in the form of a veil, a membrane, a film, a paint or a coating of plaster, bonded or glued to the front face of the panel of porous material, this front layer having a resistance to air flow less than or equal to 1 kPa.s / m, preferably less than or equal to 0.5 kPa.s / m.
• the sound insulation product is intended for use as an acoustic ceiling tile on a frame suspended from a ceiling with a plenum between the sound insulation product and the ceiling.
• the sound insulation product can also fulfill a thermal insulating function, in particular in the case of ceiling systems or of furthermoregulating (heating and / or cooling). This embodiment is also included in the invention.
• the invention also relates to an acoustic insulation system suspended from a ceiling or in front of a wall, comprising a structure for suspending an insulating facing away from the ceiling or from the wall wall, in which the facing comprises at least one sound insulation product according to the invention, the rear layer being oriented towards the ceiling or the wall wall.
• the invention also relates to a use of the acoustic insulation product according to the invention as an acoustic ceiling tile on a frame suspended from a ceiling with a plenum between the acoustic insulation product and the ceiling, the rear layer being oriented. towards the ceiling or wall.
• Fig. 1 shows a sectional view of an acoustic insulation product according to the invention
• Fig. 2 shows a sectional view of an acoustic insulation product in its use as a suspended ceiling tile.
• the invention relates to an acoustic insulation product comprising:
• a panel made of porous material, in particular based on foam or fibers comprising a first face, called the rear face, intended to be turned towards a wall such as a ceiling or a wall, and a second face, called the front face, located opposite the back side,
• the rear layer which adheres to or is bonded or coupled at least in part to the rear face of the panel made of porous material, the rear layer having an air flow resistance which is between 5 kPa.s / m and 20 kPa.s / m, preferably between 7 kPa.s / m and 15 kPa.s / m.
• the air flow resistance measurement is performed according to ISO 9053.
• the resistance to air flow of the back layer is representative of a limited capacity for air to pass through it, which may be linked to the presence of small pores in layer.
• the resistance to air flow of the rear layer being between 5 kPa.s / m and 20 kPa.s / m, it introduces an energy dissipation by viscous friction of the air set in motion by the acoustic wave.
• the acoustic waves not dissipated in the panel of porous material and in the back layer pass into the plenum, they undergo multiple reflections.
• the invention also overcomes a cross section of the sealed rear wings of the prior art which, by forming an almost perfectly reflective face for acoustic waves, amplifies the energy of the resonance modes in the plenum.
• the resistance to air flow of the rear layer according to the invention allows part of the acoustic waves to pass through it.
• the sound insulation between the room and the plenum is therefore slightly degraded.
• the resistance to air flow of the rear layer is chosen so as not to degrade the sound insulation, that is to say to keep the inert effects of the porous material panel. .
• the intensity of the acoustic waves which is reflected in the plenum is less and the sound insulation between two neighboring rooms is improved.
• the dissipation provided in the plenum by the rear layer reduces the propagation of waves in this same plenum.
• the sound insulation product according to the invention indeed makes it possible to improve both sound insulation and sound absorption.
• FIG. 1 shows a sectional view of a sound insulation product according to the invention.
• the sound insulation product 5 comprises a panel made of porous material 1, in particular based on foam or fibers.
• the panel of porous material 1 is for example a panel of mineral and / or vegetable and / or synthetic wool, a panel of foam with open porosity or else a panel of agglomerated fibers obtained by the wet process such as mineral fibers and / or. or cellulose shaped by suspension with an inorganic or organic binder.
• the porous material panel has a first main face, called the rear face 20, intended to face a wall, which may be a ceiling (7 in FIG. 2) or a wall, and a second face, called the front face 30, located opposite the rear face 20.
• the front face is intended to face the interior of a room, a room (4 in FIG. 2) or even a corridor.
• the sound insulation product 5 further comprises a layer, called the rear layer 2, which adheres to or is bonded or coupled at least in part to the rear face 20 of the panel made of porous material 1.
• the bond or adhesion is made from preferably by gluing, for example in the form of spots or lines of glue.
• the entire surface of the back layer is not necessarily coated with glue.
• the rear layer 2 is for example a fibrous web in woven or non-woven fabric, a layer of paint or even a layer of compressed mineral wool, or even a plastic film or any type of material in the form of a film or a membrane. .
• the rear layer 2 is a layer of paint, the latter is deposited on the panel made of porous material 1 in liquid form and left to dry. There is then no bonding step, but a coating step with a primer can take place.
• the paint can optionally contain a pore-forming agent to provide adequate resistance to the passage of air.
• the back layer 2 has an air flow resistance which is between 5 kPa.s / m and 20 kPa.s / m to allow improvement in both sound absorption, especially at bass frequencies, and sound insulation, as explained above. It is this well chosen range of resistance to air flow which enables this technical effect. Indeed, below 5 kPa.s / m, the sound insulation is degraded. Above 20 kPa.s / m, there is no longer any gain in absorption. Preferably the resistance to air flow is included between 7 kPa.s / m and 15 kPa.s / m, which further improves sound absorption and sound insulation.
• the air flow resistance measurement is carried out according to ISO 9053.
• the rear layer has for example a thickness less than or equal to 1 cm, preferably less than or equal to 1 mm.
• the rear layer 2 can be micro-perforated, that is to say that micro-perforations 4 are pierced through the rear layer 2.
• These micro-perforations 4 can be perforated. for example, be drilled in a rear layer 2 already in place on the porous material panel 1, which has the advantage of not blocking the micro-perforations 4 when bonding the rear layer 2 on the porous material panel 1
• the micro-perforations 4 can be produced in a rear layer 2 made up of a so-called impermeable veil of fibers (having a resistance to the flow of air before perforation of greater than 50 kPa.
• s / m so as to give it a resistance to air flow after perforation which is between 5 kPa.s / m and 20 kPa.s / m, preferably between 7 kPa.s / m and 15 kPa.s / m.
• oL denotes the airflow resistance of the micro-perforated back layer and h the dynamic viscosity of air.
• the back layer can be pierced with multi-diameter micro-perforations.
• the panel made of porous material 1 preferably has a surface density of between 0.8 kg / m 2 and 10 kg / m 2 , so as to have sufficient mechanical strength for application as a ceiling tile while at the same time not being too heavy.
• the panel made of porous material 1 preferably has an air flow resistivity of between 30 kPa.s / m 2 and 120 kPa.s / m 2 so as to absorb acoustic waves.
• the panel made of porous material 1 has an air flow resistance of between 50 kPa.s / m 2 and 110 kPa.s / m 2 , or even between 50 kPa.s / m 2 and 100 kPa.s / m 2 , or even between 50 kPa.s / m 2 and 90 kPa.s / m 2 , or even between 50 kPa.s / m 2 and 80 kPa.s / m 2 , to improve sound absorption.
• the airflow resistivity measurement is obtained by dividing the airflow resistance of the panel by its thickness.
• the panel of porous material 1 also preferably has a Young's modulus of between 0.1 MPa and 4 MPa so as to provide sound insulation.
• the panel made of porous material 1 has a Young's modulus of between 0.5 MPa and 4 MPa, even more preferably between 0.8 MPa and 4 MPa, or even between 1.2 MPa and 4 MPa, or alternatively between 1.5 MPa and 4 MPa, or between 2 MPa and 4 MPa to improve its sound insulation.
• the Young's modulus is measured according to the ISO 18437 standard and according to the article by C. Langlois, R. Panneton and N. Atalla: Polynomial relations for quasi-static mechanical characterization of isotropy poroelastic materials, J. Acoust . Soc. Am., 110: 3032-3040, 2001.
• the porous material panel 1 further preferably has a thickness of between 10 mm and 60 mm. This range of thickness allows a good mechanical shade of the panel and sufficient absorption of acoustic waves for a ceiling tile application.
• the sound insulation product 5 further preferably comprises a second layer, called the front layer 3, in the form of a veil, a membrane, a film, a paint or a plaster coating, bound or glued to the front face 30 of the panel made of porous material 1.
• This front layer has a decorative function above all. It has an air flow resistance which is less than or equal to 1 kPa.s / m, preferably less than or equal to 0.5 kPa.s / m, so as to allow sufficient air to enter in the porous material panel 1 in order to allow absorption and sound insulation by the porous material panel 1 and by the rear layer 2.
• the sound insulation product 5 also preferably provides thermal insulation.
• the benchmark sound insulation product tested includes a mineral wool panel with a surface density of 5 kg / m 2 , thickness 50 mm, Young's modulus 0.65 MPa and a flow resistivity of air of 85 kPa.s / m, a rear non-woven glass fiber web having an air flow resistance of 70 kPa.s / m and a thickness of 0.6 mm, and a front web having an air flow resistance of 0.5 kPa.s / m.
• the acoustic insulation product according to the invention is the same product, in which the rear wall has also been pierced with micro-perforations of 0.18 mm diameter, with a perforation rate of 0.15%. The resistance to air flow of the micro-perforated rear wall was measured at 7.5 kPa.s / m.
• Sound absorption and sound insulation were measured on both products.
• the sound absorption is measured according to the ISO 354 standard.
• the aw indicator is then calculated according to the ISO 11654 standard. Throughout the application, the measurements were carried out with a plenum of 200 mm in construction height.
• D nf is then calculated according to the ISO 717-1 standard. Throughout the request, the measurements were carried out with a plenum of 700 mm in construction height.
• a gain in sound absorption (as and aw) of 0.05 was observed over the entire frequency range between 100 Hz and 5000 Hz and an insulation gain of approximately +1 dB on the D nf, w between the product of sound insulation according to the invention, of which the rear wall has an air flow resistance of 7.5 kPa.s / m, and the reference sound insulation product, of which the rear wall has a resistance to air flow of 100 kPa.s / m.
• the acoustic insulation product according to the invention does indeed improve both the acoustic insulation and the acoustic absorption.
• the sound insulation product 5 is preferably intended for use as a suspended ceiling tile. It can also be used as an acoustic cladding on any other wall, for example on a wall. A plenum between the sound insulation product and the wall allows optimal use of it.
• Figure 2 shows a sectional view of a sound insulation product in use as a suspended ceiling tile.
• FIG. 2 shows a suspended ceiling comprising a metal frame 7 fixed to a ceiling wall and provided at its lower end with a ledge 9 on which the ceiling tiles rest, each ceiling tile being formed of a acoustic insulation product 5 according to the invention.
• a plenum 6 is present between the wall 7 of the ceiling and the upper surface of the sound insulation product 5, namely the rear layer 2.
• the rear face 20 of the sound insulation product 5, covered with the rear layer 2 is oriented towards the wall 7 of the ceiling.
• the face front 30 of the soundproofing product 5, covered here with a front panel 3, is oriented towards the interior of a room 4.
• the invention also relates to a use of the acoustic insulation product 5 as an acoustic ceiling tile on a frame 8 suspended from a ceiling 7 with a plenum 6 between the acoustic insulation product 5 and the ceiling 7, as well as a corresponding sound insulation system.
• the invention also relates to a wall sound insulation system.

Landscapes

• Engineering & Computer Science (AREA)
• Architecture (AREA)
• Physics & Mathematics (AREA)
• Electromagnetism (AREA)
• Civil Engineering (AREA)
• Structural Engineering (AREA)
• Acoustics & Sound (AREA)
• Building Environments (AREA)
• Soundproofing, Sound Blocking, And Sound Damping (AREA)
• Laminated Bodies (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=66476350

Family Applications (2)

Family Applications Before (1)

Country Status (6)

Families Citing this family (1)

Family Cites Families (20)

• 2019
  • 2019-04-16 EP EP19169606.1A patent/EP3725968A1/de not_active Withdrawn
• 2020
  • 2020-04-06 AU AU2020259716A patent/AU2020259716A1/en active Pending
  • 2020-04-06 BR BR112021020187A patent/BR112021020187A2/pt unknown
  • 2020-04-06 US US17/604,267 patent/US11814836B2/en active Active
  • 2020-04-06 CA CA3132360A patent/CA3132360A1/fr active Pending
  • 2020-04-06 EP EP20716795.8A patent/EP3956528A1/de active Pending
  • 2020-04-06 WO PCT/EP2020/059729 patent/WO2020212177A1/fr unknown

Also Published As

Similar Documents

Legal Events