EP3555370A1 - Élément de construction absorbant le son à profilés d'étouffement et paroi d'insonorisation - Google Patents

Élément de construction absorbant le son à profilés d'étouffement et paroi d'insonorisation

Info

Publication number
EP3555370A1
EP3555370A1 EP17826166.5A EP17826166A EP3555370A1 EP 3555370 A1 EP3555370 A1 EP 3555370A1 EP 17826166 A EP17826166 A EP 17826166A EP 3555370 A1 EP3555370 A1 EP 3555370A1
Authority
EP
European Patent Office
Prior art keywords
sound
profile
absorbing
inlet
deletion
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP17826166.5A
Other languages
German (de)
English (en)
Other versions
EP3555370B1 (fr
Inventor
Ronald Tschiersch
Christian Hoppe
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Liaver GmbH and Co KG
Original Assignee
Liaver GmbH and Co KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Liaver GmbH and Co KG filed Critical Liaver GmbH and Co KG
Publication of EP3555370A1 publication Critical patent/EP3555370A1/fr
Application granted granted Critical
Publication of EP3555370B1 publication Critical patent/EP3555370B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • 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
    • G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01F—ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
    • E01F8/00—Arrangements for absorbing or reflecting air-transmitted noise from road or railway traffic
    • E01F8/0005—Arrangements for absorbing or reflecting air-transmitted noise from road or railway traffic used in a wall type arrangement
    • E01F8/0029—Arrangements for absorbing or reflecting air-transmitted noise from road or railway traffic used in a wall type arrangement with porous surfaces, e.g. concrete with porous fillers
    • 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

Definitions

  • the present invention relates to a sound absorbing
  • the sound-absorbing device comprises a sublingually ⁇ Berschneider layer and embedded therein, completely enclosed in the Mate rial of the absorber layer deletion profiles also affect the acoustic characteristics of the device and contribute in a particularly surprising manner to increase the absorption effect. With increasing noise pollution, especially near
  • a plate element for a noise ⁇ protection wall which is composed of several layers of material.
  • a carrier layer is formed by using ⁇ interconnected wooden boards on which in the direction of the sound source a continuous layer of rock wool or similar fiber material is applied. This noise absorbing layer is over the entire surface of another
  • EP 1 508 650 Bl a method for producing a noise barrier of sound-absorbing components is described.
  • An embodiment of the component produced thereafter has a support plate made of concrete, on which one or two ⁇ side facing shells are attached, the sintered expanded glass included.
  • sintered expanded glass is basically weather-resistant, it is very susceptible to mechanical stress.
  • the facing shell of sintered expanded glass located on the outside of the sound-absorbing component is therefore already damaged under moderate mechanical stress, as can occur during the assembly process.
  • EP 0 548 856 B1 shows a visual and noise protection wall with a support beam construction.
  • strongly profiled sound absorption profiles are fixed on a concrete ⁇ support wall.
  • the sound absorption profiles are made of lean-mixed lean concrete and have individual cavities that partially protrude into the lean concrete layer of the sound absorption profiles. To improve the sound insulation, these cavities can be filled with mineral wool. A disadvantage of this
  • Arrangement consists in the considerable profiling of the outwardly directed surface of the sound-absorbing profile, which, although leading to improved absorption properties, makes it impossible to use it with strong air currents, for example in the immediate vicinity of railways for high-speed trains. This also leads to a large total wall thickness and high weight.
  • DE 42 31 487 A1 discloses a sound-absorbing wall element which has a concrete support layer.
  • the support layer is a large-scale recesslicharbei ⁇ tet, in which area covering a cover layer of individual plate-shaped elements, consisting of hauftechniksporigem Concrete, is used.
  • the honeycomb concrete slabs improve the absorption properties, while the mechanical stability of the underlying support layer is deteriorated.
  • To further improve the sound absorption are areal trained sound absorption plates between the hauftechniksporigen concrete elements and the support layer.
  • the intermediate sound absorbing panels substantially fill the entire area in the recess, except for minor non-exposed areas at the edges of the individual porous concrete slabs.
  • the protective wall comprises a load-bearing, simultaneously sound-absorbing reinforced concrete wall and an absorption layer, which are connected to one another by gluing or needling.
  • the absorption layer consists of open-pored and fabric-reinforced sheets of plastic-bonded elastomeric fibers.
  • the reinforced concrete wall has a profiling with grooves in the boundary region to the absorption layer. The grooves may be partially or completely filled with a secondary absorbent material. Alternatively, the Absorptionsma ⁇ material can also be applied only as a coating in the grooves. Softened fine and open-cell foams are preferably suitable as secondary absorption materials.
  • a sound-absorbing component is described, which is also suitable for outdoor use.
  • This component comprises a sound-absorbing cover layer and embedded therein
  • Sound absorber elements with respect to the cover layer increased absorption.
  • the directed towards the sound source surface of the cover layer is flat, the Sound absorber elements are arranged at a distance from each other and an absorption surface of the sound absorber elements lies in a plane parallel to the cover layer. In this plane, the area occupied by the sound absorber elements is smaller than that occupied by sound absorber elements
  • An object of the present invention is thus be ⁇ starting from art cited prior to provide a further improved sound-absorbing device which is inexpensive and easy to manufacture especially preferably on the basis of porous sound absorbing material ⁇ lien.
  • the component is to comply with the prevailing outdoor environmental conditions and operating conditions and yet has a significantly enhanced absorption rate than earlier solutions, in particular in the frequency range between 250 and 2000 Hz, in order to use the sound-absorbing Bauele ⁇ ment in noise efficiently.
  • Another object is seen in the provision of an improved soundproofing wall.
  • the present invention is based on the surprising
  • Extinguishing profiles either have a cavity or are filled with the material of the absorber layer.
  • Explainable is the phenomenon used by the invention with the fact that it comes at the profile edges and in the interior of the profile for reflection, diffraction and superposition of the sound waves, which ultimately lead to extinction of the sound energy.
  • the sound absorbing component according to the invention has a sound-absorbing absorber layer with a Schallein ⁇ tread area and more completely enclosed in the absorber layer, spaced from each other arranged
  • Each deletion profile consists of a sound-reflecting material, for example steel sheet,
  • the profile interior is hollow or completely or partially filled with the material of the absorber layer.
  • the deletion profile preferably has at least one inlet ⁇ area with numerous sound inlet openings and at least subsequent to the inlet face closed Reflection ⁇ onstage.
  • the sound inlet openings can preferably be arranged regularly ⁇ moderately but also irregularly distributed in the inlet face.
  • the reflection surface and the open side of the deletion of the profile are spaced further from the sound entry surface of the sublingually ⁇ Berschneider layer than the inlet area.
  • Reflection surface may be perpendicular to the sound entrance surface or parallel to this or at an acute or obtuse angle.
  • the aim is in each case to run the paths of the reflected sound waves as long as possible in the absorber material.
  • the inlet surface of the extinguishing profile is spaced and parallel to
  • Sound entry surface instead use inlet surfaces which extend at an angle to the sound entry surface, in particular at an angle of 45 ° to the sound entry surface. Preferably, on both sides of the inlet surface at an angle to this extending reflection surfaces Chen.
  • Sound entrance surface projected area of all deletion profile is smaller than the not occupied by the projected area surface portion of the sound incidence surface.
  • these surfaces are approximately in the same or in a reverse ratio, the resulting absorption properties also being dependent on the respectively used material of the absorption layer.
  • the deletion profile has at least one collar surface which is parallel or also at an angle to the sound entrance surface and extends outside of the profile interior.
  • the collar surface may be obtuse-angled or acute-angled to the sound entry surface.
  • the collar surface also has acoustic effects and leads by reflections on it to extend the paths (and thus the duration) of the reflected sound waves in the absorber material.
  • the collar surface also serves the posi ⁇ tioning of the deletion profile in the manufacturing process.
  • the collar surface can improve the static properties of the sound absorbing component, so that its mechanical stability increases.
  • the distance of the sound ⁇ entrance surface of the profiles to the back of the absorber layer between 10 and 30mm, more preferably between 15 and 25 mm.
  • Component use deletion profiles with U-shaped, V-shaped, hat-shaped or truncated pyramidal cross-section. Other cross-sectional shapes are also possible.
  • the sound inlet openings are formed on the inlet ⁇ surface as a perforation, ie, the openings are substantially uniformly distributed over the inlet surface, wherein the sound inlet openings occupy preferably 5% to 20% of the surface of the inlet surface.
  • the sound inlet openings have a circular shape with an opening diameter between 6 and 10 mm.
  • elongated slots with edge lengths in the range (5-10) x (10-30) mm or other forms for the sound inlet ⁇ openings are used.
  • a preferred design of the sound-absorbing component uses an absorber layer having a thickness of 40 to 80 mm, preferably 50 to 70 mm, in particular 60 mm.
  • the absorber layer preferably consists of a porous absorber Mate ⁇ rial, in particular from expanded glass, expanded clay, pumice, Gesteinskör ⁇ voltage, wood concrete, mineral fiber or a mixture of these materials.
  • the materials can be held together by a binder, eg cement, polyurethane, epoxy resins or others.
  • the absorber layer is a porous absorber and is preferably made of woody material.
  • the profile interior of the deletion ⁇ profile has a cross-sectional area between 600 and 3000 mm 2 .
  • deletion profiles have a height extending in the thickness of the absorber layer which is greater than their width, which leads in particular to good absorption results if the absorber layer has a thickness of more than 60 mm.
  • a preferred embodiment is characterized in that the directed in the direction of the sound source Schallein ⁇ tread surface of the absorber layer is flat.
  • the deletion profile consists of a sound-reflecting
  • the sound waves which have first pass through a path in the absorber layer, penetrate the deletion ⁇ profile of the numerous sound inlet openings in the inlet area, and / or z. B. after reflection at the interface to the carrier layer on the side facing away from the sound entrance surface open side of the profile. Due to the numerous, next to each other, preferably parallel to each other deletion profiles there is also to sound reflections between the profiles. At the interfaces between absorber layer and deletion profile, the aforementioned diffraction edges are formed particularly effectively.
  • the inventive design thus sleek, smooth, weather-resistant, shock-resistant schallab ⁇ sorbent components can be generated profiles using inexpensive materials as the absorber layer and with inexpensive deletion, with the complete omission of expensive, highly absorbent, sensitive materials.
  • the OF INVENTION ⁇ to the invention components can for example be used to particular advantage for sound absorption on railway lines, where there is little distance high-speed trains are available on a regular basis, so strong air turbulence and high
  • the sound-absorbing components according to the invention are suitable for the subsequent realization of soundproofing measures on and in buildings that were not originally optimized with respect to sound absorption.
  • the deletion in the profiles take sublingually ⁇ Berschneider maybe an area of 30% to 70% and have a height of 25% to 80% of the thickness of the absorber layer. Furthermore, it is essential for the invention that the individual
  • Deletion profiles are arranged spaced from each other, so that as many as possible of the diffraction edges and reflection ⁇ xions vom arise.
  • a particularly preferred embodiment uses deletion profiles that cover an area of about 50% of the surface of the absorber ⁇ layer. It has proven to be useful to use U-shaped deletion profiles of a width of about 30 to 60 mm, which has a collar surface on both edges have a width of 15 to 25 mm and each with a center distance of 200 to 350 mm comply. This leads to an optimized absorption rate at frequencies in the range between 250 and 2,000 Hz. This design leads to a targeted improvement of the absorption rate especially for requirements in rail traffic (see, for example, guidelines for railway noise control systems - RLE).
  • Absorption values are achieved both in the range below 500 Hz and in the range up to 3,000 Hz.
  • other materials with good or moderate absorbency may be used.
  • auxiliary and connection ⁇ medium can be used in addition to the above-mentioned adhesive bond ⁇ , in particular retaining clips, frame members or mechanical fasteners, as are known in the art.
  • Modified embodiments may use less sound-absorbing materials.
  • the absorber layer can be flat at its sound entrance surface facing the sound source or can also have a profiling, if this is useful for the respective application. High overall absorption values can also be achieved with a flat surface.
  • the deletion profile is preferably made of steel or zinc sheet with a thickness ⁇ 1 mm or other hard material, eg. As plastic or fiber cement manufactured.
  • the possibly provided carrier layer is particularly preferably made of non-sound-absorbing material with high load-bearing capacity, for example concrete or masonry. However, materials with a low degree of absorption are also suitable for the carrier layer in modified embodiments.
  • the present invention also proposes a sound insulating wall ⁇ , which is characterized in that it has a carrier layer to which a plurality of schallab ⁇ sorbing components of the invention is mounted.
  • a sound insulating wall ⁇ which is characterized in that it has a carrier layer to which a plurality of schallab ⁇ sorbing components of the invention is mounted.
  • supporting structures for holding and / or connection of the individual sound-absorbing components can be used.
  • the absorber layer preferably has a thickness of between 5 and 10 cm.
  • a connection of the sound-absorbing component with a carrier layer for the construction of a soundproof wall preferably has a total thickness between 8 and 12 cm.
  • FIG. 1 shows a cross-sectional view of a first embodiment of the sound-absorbing component according to the invention with an absorber layer;
  • FIG. 2 shows a cross-sectional view of a second embodiment of the sound-absorbing component with an additional carrier layer
  • FIG. 3 shows a cross-sectional view of a third execution ⁇ shape of the sound absorbing device having support layer
  • FIG. 4 is a cross-sectional view of a fourth execution ⁇ form the sound-absorbing device
  • FIG. 5 shows two views of a deletion profile with, for example ⁇ exemplary dimensions
  • FIG. 7 shows a measurement curve of the absorption coefficient s versus the frequency f of an absorption layer of expanded glass with deletion profiles according to the invention
  • a first embodiment of a sound absorption orbie ⁇ emitting component is shown in a simplified cross-sectional view.
  • the schallab ⁇ sorbing device comprises an absorber layer Ol of a sound absorbing material, for example with a
  • the absorber layer 01 is formed over the entire surface and in practice has a thickness of 60 mm, for example.
  • the absorber layer has a sound ⁇ entry face 02, which can sound waves 03 to enter.
  • the absorber layer 01 has a rear side 04, which preferably parallel to the sound entrance surface opposite.
  • the absorber layer oil are several
  • Erasure profiles 05 are inserted, which are completely surrounded by the material of the absorber layer.
  • Each deletion profile 05 consists of a sound-reflecting material, for example thin sheet metal, plastic or the like.
  • Deletion profile 05 has at least one open side, and preferably one or more inlet surfaces 06 with numerous sound inlet openings 07.
  • the inlet surface 06 extends in which in Fig. 1, right Darge ⁇ deletion profile presented parallel to the sound entry surface 02 of the absorber layer 01, but may also be at an angle related to this , In the deletion profile shown on the left in FIG. 1, a first inlet surface runs parallel to the sound inlet surface 02, and second inlet surfaces 06b run perpendicular to the first inlet surface.
  • 05 has the deletion profile preferably Minim ⁇ least a closed reflection surface 08, attached to the
  • the reflection surface 08 may, for. B. perpendicular to the sound entrance surface 02 of the absorber ⁇ bertik run 01 (right profile in Fig. 1) or as a collar surface formed parallel to the sound entrance surface 02 of the absorber layer 01 (right profile in Fig. 1) or approximately at an angle from 45 ° to the sound entrance surface 02 (left profile in Fig. 1).
  • the reflection surface 08 may, for. B. perpendicular to the sound entrance surface 02 of the absorber ⁇ bertik run 01 (right profile in Fig. 1) or as a collar surface formed parallel to the sound entrance surface 02 of the absorber layer 01 (right profile in Fig. 1) or approximately at an angle from 45 ° to the sound entrance surface 02 (left profile in Fig. 1).
  • Deletion profile describes in cross-section a profile inside ⁇ space 09, which has a remote from the sound entrance surface open side.
  • the profile interior 09 may be hollow (left profile in Fig. 1) or in whole or in part with the
  • the deletion profiles 05 can be displayed in a plane next to be arranged one another or with a plane offset to each other (as shown in Fig. 1).
  • FIGS. 1 and 2 different construction forms of the deletion profiles 05 are shown by way of example. Further modifications, for example curved or cylindrical cross sections of the deletion profiles are possible.
  • Fig. 1 shows two completely enclosed in the absorber layer 01 U-shaped deletion ⁇ profile 05, which each have lateral collar surfaces 08 sen. The collar surfaces act as reflective surfaces 08 and also serve the mechanical support of the deletion profiles in the absorber layer.
  • FIG. 2 shows deletion profiles with a truncated pyramidal cross-section
  • the profile interior of which is in each case filled with material of the absorber layer.
  • These two profiles shown by way of example each have a collar surface only on one side.
  • Fig. 2 also shows a carrier layer 10 on which the
  • the carrier layer 10 is made of a hard, sound-reflecting material.
  • the absorber layer 01 has a thickness of 50 to 70 mm, wherein a thickness of 60 mm is good for the
  • the distance a between the back 04 and the Löschungspro ⁇ filen is preferably 15 to 25 mm.
  • the lateral distance between the deletion profiles is preferably between 200 and 350 mm, based on their respective longitudinal axes.
  • FIG. 3 shows a further modified embodiment of the sound-absorbing component. The one shown on the right
  • Cancellation profile has a substantially triangular cross-section, the inlet surface 06 is approximately at an angle of 45 ° to the sound entrance surface 02, as a collar surface ⁇ formed reflection surface 08 extends approximately parallel to
  • Sound entrance surface 02 and another reflection surface 08 extends approximately at an angle of 45 ° to the sound entrance surface 02.
  • left three inlet surface 06 are provided, two about at an angle of 45 ° to the sound entrance surface 02, the formed as a collar surfaces reflection surface 08 are approximately parallel to
  • Extinguishing profile has a substantially U-shaped cross section, the two-sided collar surfaces 08 are approximately at an angle of 45 ° to the sound entrance surface 02, all surfaces of the profile act as reflection surfaces.
  • left extinction profile of the profile interior is hollow, the collar surfaces run approximately parallel to the sound entry ⁇ surface 02. Further preferred dimensions of the extinction profile are in
  • FIGS. 6 to 9 show a plurality of measurement curves of the course of the absorption coefficient ⁇ over the frequency f, the comparison of the curves showing the particular effect of the components according to the invention.
  • FIG. 6 shows a measurement curve of the absorption coefficient over the frequency f of an absorber layer which consists only of expanded glass (particle size l-2 mm) with a layer thickness of 60 mm.
  • a loss of 11.3 dB occurs in this case.
  • Fig. 7 shows a measuring ⁇ curve of the absorption coefficient ⁇ on the frequency f of the same absorber layer of foamed glass, in which case in the absorber layer several deletion profiles (of sheet metal, hutförmi- ger cross section profile interior hollow) in the above beriane- NEN manner integrates are.
  • FIG. 9 shows a measurement curve of the absorption coefficient ⁇ over the frequency f of the same absorber layer of expanded clay, wherein here in the absorber layer several deletion profiles (made of sheet metal, hat-shaped cross-section,
  • a preferred application is a sound barrier, which is composed of numerous rich sound-absorbing components
  • sound-absorbing components for sound absorption ⁇ in vehicles, ships or aircraft can be used.
  • the sound-absorbing components may be specially shaped for this, for example to follow the contours in bodies.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Building Environments (AREA)
  • Devices Affording Protection Of Roads Or Walls For Sound Insulation (AREA)
  • Soundproofing, Sound Blocking, And Sound Damping (AREA)

Abstract

L'invention concerne un élément de construction absorbant le son approprié, entre autres, à une utilisation en extérieur. L'élément de construction comprend une couche absorbante absorbant le son (01), pourvue d'une surface d'entrée de son (02), ainsi qu'une pluralité de profilés d'étouffement (05) entièrement inclus dans la couche absorbante (01) et espacés les uns des autres. Le profilé d'étouffement (05) est constitué d'un matériau réfléchissant le son et possède un espace intérieur (09) qui présente un côté ouvert opposé à la surface d'entrée de son (02). Le profilé d'étouffement (05) comporte de préférence au moins une surface d'entrée (06) pourvue de nombreuses ouvertures d'entrée de son (07) et au moins une surface réfléchissante fermée (08) jouxtant la surface d'entrée. La surface réfléchissante (08) et le côté ouvert du profilé d'étouffement (05) sont davantage espacés de la surface d'entrée de son (02) que la surface d'entrée (06). L'espace intérieur (09) est creux ou entièrement ou partiellement rempli du matériau de la couche absorbante. L'invention concerne également une paroi d'insonorisation comportant une couche support (10) sur laquelle de nombreux éléments de construction absorbant le son sont fixés.
EP17826166.5A 2016-12-19 2017-12-13 Élément de construction absorbant le son à profilés d'étouffement et paroi d'insonorisation Active EP3555370B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102016124755.3A DE102016124755B3 (de) 2016-12-19 2016-12-19 Schallabsorbierendes Bauelement mit Löschungsprofilen sowie Schallschutzwand
PCT/EP2017/082596 WO2018114522A1 (fr) 2016-12-19 2017-12-13 Élément de construction absorbant le son à profilés d'étouffement et paroi d'insonorisation

Publications (2)

Publication Number Publication Date
EP3555370A1 true EP3555370A1 (fr) 2019-10-23
EP3555370B1 EP3555370B1 (fr) 2022-11-16

Family

ID=60942968

Family Applications (1)

Application Number Title Priority Date Filing Date
EP17826166.5A Active EP3555370B1 (fr) 2016-12-19 2017-12-13 Élément de construction absorbant le son à profilés d'étouffement et paroi d'insonorisation

Country Status (6)

Country Link
US (1) US11455978B2 (fr)
EP (1) EP3555370B1 (fr)
CN (1) CN110100060B (fr)
AU (1) AU2017380760B2 (fr)
DE (1) DE102016124755B3 (fr)
WO (1) WO2018114522A1 (fr)

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WO2016203057A1 (fr) * 2015-06-19 2016-12-22 Liaver Gmbh & Co.Kg Élément de construction absorbant les sons et paroi insonorisante comprenant un tel élément
DE102015109808A1 (de) * 2015-06-19 2016-12-22 Liaver Gmbh & Co. Kg Schallabsorbierendes Bauelement und Schallschutzwand mit einem solchen
CN106218540B (zh) * 2016-08-09 2018-10-02 声博士（深圳）声学技术有限公司 一种降噪隔声隔热新型材料板
RU2656438C1 (ru) * 2017-06-09 2018-06-05 Олег Савельевич Кочетов Звукопоглощающая конструкция для производственных зданий
RU2659925C1 (ru) * 2017-06-16 2018-07-04 Олег Савельевич Кочетов Способ звукоизоляции

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Publication number Publication date
CN110100060A (zh) 2019-08-06
EP3555370B1 (fr) 2022-11-16
WO2018114522A1 (fr) 2018-06-28
CN110100060B (zh) 2022-10-28
AU2017380760B2 (en) 2023-05-18
US11455978B2 (en) 2022-09-27
AU2017380760A1 (en) 2019-07-11
DE102016124755B3 (de) 2018-02-15
US20190348018A1 (en) 2019-11-14

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