EP2540926A1 - Acoustic dampening element and method for manufacturing the same - Google Patents
Acoustic dampening element and method for manufacturing the same Download PDFInfo
- Publication number
- EP2540926A1 EP2540926A1 EP11172426A EP11172426A EP2540926A1 EP 2540926 A1 EP2540926 A1 EP 2540926A1 EP 11172426 A EP11172426 A EP 11172426A EP 11172426 A EP11172426 A EP 11172426A EP 2540926 A1 EP2540926 A1 EP 2540926A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- plate
- micro
- sheet
- millimeters
- laser beam
- 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
Links
- 238000000034 method Methods 0.000 title claims abstract description 10
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 7
- 239000000463 material Substances 0.000 claims description 22
- 239000004033 plastic Substances 0.000 claims description 5
- 229920003023 plastic Polymers 0.000 claims description 5
- 229910052782 aluminium Inorganic materials 0.000 claims description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 4
- 229910052751 metal Inorganic materials 0.000 claims description 4
- 239000002184 metal Substances 0.000 claims description 4
- 239000011888 foil Substances 0.000 claims description 3
- 229920005372 Plexiglas® Polymers 0.000 claims description 2
- VVQNEPGJFQJSBK-UHFFFAOYSA-N Methyl methacrylate Chemical compound COC(=O)C(C)=C VVQNEPGJFQJSBK-UHFFFAOYSA-N 0.000 claims 1
- 239000000835 fiber Substances 0.000 claims 1
- 229920000642 polymer Polymers 0.000 claims 1
- 238000010521 absorption reaction Methods 0.000 description 12
- 238000000862 absorption spectrum Methods 0.000 description 10
- 239000010410 layer Substances 0.000 description 4
- 239000002861 polymer material Substances 0.000 description 4
- 239000011521 glass Substances 0.000 description 3
- 238000009413 insulation Methods 0.000 description 3
- 239000000123 paper Substances 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 238000001228 spectrum Methods 0.000 description 3
- 239000002131 composite material Substances 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 239000002356 single layer Substances 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000002835 absorbance Methods 0.000 description 1
- 239000006096 absorbing agent Substances 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 239000010432 diamond Substances 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 239000012774 insulation material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 239000004926 polymethyl methacrylate Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Images
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
- 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
- E04B2001/8495—Solid slabs or blocks with acoustical cavities, with or without acoustical filling the cavities opening onto the face of the element the openings going through from one face to the other face of the element
Definitions
- the present invention relates to a sound absorbing member having the features of the preamble of claim 1 and a method of manufacturing a sheet-like sound absorbing member consisting of a plate in which a plurality of holes are spacedly distributed as micro-slits, each micro-slit having an elongated shape ,
- Such a sound absorbing member and such a method are known from EP 0 876 539 is known, in which a sound-absorbing element is described, which emanates from a micro-perforated plate, which of HV Fux in Akustika Volume 81 (95, pages 107 to 116 ) has been described.
- microperforated plates can be used for broadband absorption of sound.
- the theory behind this teaching is that the vibrations of the air, i. the sound is effectively damped by the influence of gravitational forces within the microperforations and that in this way a broadband absorption is achieved without using additional porous materials.
- the holes are generated with a laser beam.
- the EP 0 876 539 Slots are produced in a plate by the fact that material parts of the Plate in the vicinity of each slot are partially pressed out of the plane of the plate.
- the plate is in particular a steel plate or an aluminum plate with a thickness of between 0.1 and 10 mm.
- the individual slots have a length of 3 to 20 mm, the width between 0.01 and 0.8 preferably being between 0.1 and 0.4 mm. At the location of the removed material is the slot to which the still present material is adjacent.
- Another sound-absorbing plate-shaped absorption element is known from EP 1 950 357 known, in which a base plate made of glass is provided and a part of the micro slots are arranged on a micro slot-carrying insert, which are inserted into corresponding openings of the base plate.
- This insert carrying the micro-slots can be made of glass, metal or plastic.
- the absorbing plate is made of glass material and has micro-slots made in the wire-sawing process.
- the micro slots have a slot width between 0.1 and 0.3 mm.
- the honeycomb core is a structure of close-meshed raw paper honeycomb.
- the planking consists of thin wood-based panels, which has one or more openings.
- the planking may be formed by a veneer that may have a thickness of 0.4 millimeters and more.
- Decorative foils, paper or plastic plates can also be used, wherein the openings in each case are formed by bores, millings or stampings.
- the resulting holes have a diameter of 1 to 20 millimeters.
- the present invention seeks to provide a simple plate-shaped element to be produced, which offers a good broadband absorption. Furthermore, a method for producing such plate-shaped element can be specified.
- a sheet-like sound absorbing member consists of a plate, preferably a sheet of polymer material in a layer thickness of, for example, 2 to 5 millimeters, in which a plurality of holes are spaced distributed as micro-slots, each micro-slot having an elongated shape.
- each microslit in the form of a funnel with partially oblique and optionally parallel side walls connecting the lower lower hole opening with the upper wider opening, the lower smaller hole opening has a width between 0.05 to 0.15 mm and a length between 0 , 5 to 60 millimeters, preferably 1 to 5 millimeters.
- the top of the plate is acted upon by a laser beam which is designed to burn away the material of the plate in the depth.
- the optics of the laser beam acting on the plate is arranged and configured such that the waist of the laser beam is focused on the area between the center of the thickness of the plate material to the plane of the underside of the plate, such that the laser power is sufficient in the case of a scanning laser beam to produce a lower, smaller hole opening having a width of between 0.02 to 0.2 or 0.05 to 0.14 or, for example, 0.15 millimeters.
- a scanning laser is used, ie a laser whose beam is guided in lines over the plate and at locations where the slots are to emerge, the corresponding burning power is available and in the spaces between two longitudinally spaced micro slots of the beam otherwise distracted, blocked or exhibited.
- micro slots may also have different diameters in the upper region, while in the lower lower hole opening, the width is indeed chosen differently, but always between 0.02 and 0.2 millimeters, in particular between 0.05 to 0.15 millimeters.
- a laser beam is rapidly moved across the surface via an optical system.
- the focus is adjusted so that a funnel-shaped slot is formed.
- the tuning between the laser power and the processing speed is adjusted so that on the back of the material, ie the plate, a slot is generated with a defined minimum width, which is between about 0.05 - 0.15 millimeters.
- Fig. 1 shows a non-scale cross-section through a plate 10 according to a first embodiment of the invention, whereas where Fig. 2 a likewise not fully scaled top view of a section of this plate 10 shows.
- Fig. 3 shows a non-scale cross-section through a thicker plate 10 'according to a second embodiment of the invention, wherein Fig. 4 a likewise not to scale top view of a section of this plate 10 'shows.
- the plate 10 or 10 ' is made of a polymer material, in particular of PET, and has a thickness of, for example, 0.75 to 10 millimeters.
- a thin plate 10 after Fig. 1 and 2 has a thickness of 0.75 to 2 millimeters, preferably 0.5 to 15, 5 millimeters, in particular 1 millimeter.
- a thick plate 10 'after Fig. 3 and 4 has a thickness of between 3 and 10 millimeters, in particular between 3 and 7 millimeters, preferably 5 millimeters. It is thus specified a torsion-resistant plate 10 or 10 ', which can be easily placed in a room or together with an insulating material 50 such as Fig. 5 described as sandwich plate 100 after Fig. 6 can be used.
- the size of the plate 10 or 10 ' can be in the square meter range, for example, with a size of 1 by 2 meters, move, in the sketch of the Fig. 2 or 4 only two side edges 11 of a corner as an indication of the size of the plate 10, 10 'are located.
- a plurality of micro-slots 20 or 120 are introduced, which may be distributed regularly or irregularly.
- the micro slots 20 each have a length of 4 millimeters and are each arranged one behind the other in the direction of their longitudinal axis.
- the lateral distance between two processing lines is in the illustrated embodiment at the top 12 a millimeter.
- the distance between two slots 20 in the longitudinal direction is 2 millimeters, usually between 1.5 and 3 millimeters.
- an engraving laser is used, which drives off the individual rows of holes to be produced in succession via a scanning device and can finish a plate in approximately 161 ⁇ 2 minutes at a scanning rate of, for example, 1 meter / second.
- the narrower micro slots 20 of the plate 10 have different lengths of 3 and 6 millimeters and are also arranged one behind the other in the direction of their longitudinal axis.
- the lateral distance 42 between two processing lines is 1 millimeter in the illustrated embodiment.
- the distance 41 between two slots 20 in the longitudinal direction is 1 millimeter.
- Other line arrangements with different angles of the individual micro slots 20 and 120 to each other are possible.
- the wider micro slots 120 of the plate 10 ' have a Length of 1 centimeter and are arranged in the direction of their longitudinal axis one behind the other.
- the transverse distance 42 between a micro slot 120 in the longitudinal direction to a micro slot 20 is 1 millimeter.
- the micro-slots 20 may have a length of 1 millimeter to 4 centimeters and have a longitudinal spacing of 1 millimeter to 1 centimeter.
- the lateral spacing of the rows from each other can be from 0.5 to 10 millimeters. Essential is the stability of the plate itself.
- oblique side wall 21 of the slot 20 and the through hole 22 can be seen in the case of the micro slots 20.
- sectional side view of the Fig. 2 It can be seen that the oblique side walls 21 are aligned substantially symmetrically to a central axis or hole axis 23 in cross section.
- the oblique side walls 21 in each case follow an opening straight line 24 which is arranged symmetrically to the hole axis 23 in the illustrated embodiment. This results in an opening angle between the two straight lines 23 and 24, which spans in cross section a funnel or truncated cone with a slot as the base.
- the angle may be between about 5 degrees and 60 degrees, preferably between 10 and 50 degrees, preferably 45 degrees. In the embodiment of the Fig. 1 illustrated angle is 30 degrees. In the embodiment of the Fig. 3 shown angle is 45 degrees at both slot widths.
- the width of the slot 22 should be 0.05 to 0.14 millimeters, advantageously in particular about 0.1 millimeters.
- the mentioned opening angle of 5 to 60 degrees relates in each case to the angle between the perpendicular 23 and one of the associated opening straight lines 24, so that at a favorable angle of 45 degrees, a width of the upper hole 25 to twice the thickness of the plate 10 plus the width of the bottom hole 22 results.
- the quality of the side wall 21, so the homogeneity of this surface is of little relevance. It is even better if these side walls 21 of the micro slots 20 are uneven.
- the roughness of the surface may be up to 0.01 or up to 0.05 millimeters.
- the total open area per square meter of panel 10 should be between 1 and 10 percent, advantageously about 4.4 percent. This value corresponds to the above-mentioned first embodiment and refers to the area of the smaller micro slot openings 22 on the underside 13 of the plate 10. At an opening angle of 45 degrees, the upper opening 25 is 2.1 millimeters wide with a plate thickness of 1 millimeter.
- the one-piece plate 10 ' in fact consists of two areas, an upper second portion 31, in which the side walls 26 to the opening 25 parallel to each other, and a lower first portion 32, in which the side walls 21, 121 run in a funnel shape, ie correspond to the oblique side walls 21 of the first embodiment.
- This embodiment follows the adjustment of the laser power with respect to the material and the scanning speed, which is possible for the person skilled in the art, because in the upper region 31 the material is completely burned away by the focused laser beam, while the arrangement of the beam waist of the laser beam is in the lower region of the upper section 31 or of the Transition between the second 31 and the first 32 section causes the material of the lower portion 31 is burned away only to the extent that just forms the lower small micro slot opening 22 at the Scanverweildauer the laser beam, which therefore to the funnel-shaped walls 21 and 121 leads.
- micro-slots 20 and 120 are advantageously produced by the application of laser radiation from the upper side 12 of the plate 10 or 10 ', it being essential that the beam waist of the laser beam in the region of the center of the thickness of the plate up to the bottom 13th the plate 10 is located.
- an engraving laser for example a LS900XP from Gravograph was used for test purposes for plates 10 having a size of 500 by 500 millimeters in size With its maximum output of 80 watts and a scan speed of up to 4 meters / second, it provides the necessary performance data.
- LS900XP from Gravograph
- the maximum output of 80 watts and a scan speed of up to 4 meters / second it provides the necessary performance data.
- other lasers and deflection optics can also be used.
- slot width of the micro slot 20 or 120 it is the slot width of the funnel-shaped constriction 21, 121 to the breaking slot 22 from 0.05 to 0.15 millimeters in the second section 32 in the material and not the greater width of the substantially parallel walls 26 over the height of the first portion 31 in the material.
- narrowing the micro slots 20 in the first parallel section from 0.25 millimeters to 0.15 or 0.05 millimeters results in a shift of the absorbed sound toward the woofers.
- FIGS. 7 and 8 show a coordinate system with an absorbance between 0 and 100, measured relatively, against the frequency between about 100 hertz and just over 2000 hertz.
- the Fig. 7 shows measured absorption spectra 210 and 220 for each one single-layer plate 10 with different smaller hole width 22 on the respective bottom 13.
- the absorption spectrum 210 corresponds to a plate 10 which has been suspended in front of a wall at a distance of 10 centimeters and a predetermined number of micro-slots 20 having a minimum aperture 22 of 0.05 millimeters.
- the absorption spectrum 220 corresponds to a plate of the same thickness which has been suspended in a defined manner in front of a wall at a distance of 10 centimeters and has a predetermined number of micro-slots 120 with a minimum aperture 22 of 0.1 millimeter.
- the peak of the spectrum is shifted from about 400 hertz to about 800 hertz.
- the Fig. 8 shows measured absorption spectra 230 and 240 for each pair of plates 10 at a distance in air of 20 millimeters from each other, also with different smaller hole widths 22 on the respective undersides 13. At each Plate pair were the hole width 22 but chosen the same.
- the absorption spectrum 230 corresponds to a pair of plates 10, one of which has been suspended in a defined manner from one wall 10 centimeters apart, the other 20 millimeters farther from the wall, and both plates have a predetermined number of micro-slots 20 with a minimum breakthrough opening 22 of 0.05 millimeters.
- the absorption spectrum 240 corresponds to a pair of plates of the same thickness, which have been suspended in front of a wall at a distance of 10 centimeters and 12 centimeters respectively, respectively, and have a predetermined number of micro-slots 120 with a minimum aperture 22 of 0.1 millimeter.
- the peak of the spectrum is shifted from about 300 hertz to about 600 hertz.
- the Fig. 5 shows an embodiment of a Wabendämmplatte 50 according to an embodiment of the invention.
- the Wabendämmplatte 50 is based on a plate 10, better sheet-like film after Fig. 1 from, wherein advantageously the material of the plate 10 is selected to be very thin, for example, 0.2 millimeters thick.
- the material of the plate 10 is provided over its entire surface with micro-slots, which in the Fig. 5 are then referred to as a hole pattern 62. Due to the schematic representation of these hole pattern slots 62 are shown only as simple lines, although they the slots 20 from the Fig. 1 or 3 correspond.
- connection areas have been given the reference numeral 60 in the figures.
- connection regions 60 have a double wall thickness and as a rule the micro-slots of the two layers are not congruent so that they do not or are only partially consistent. Therefore, in the connection areas 60 of the Fig. 5 no slots drawn, although these are present.
- the micro slots 62 are in the remaining transition areas 61 or honeycomb surfaces.
- the insulating plate 50 thus consists of hexagonal banded honeycomb 63.
- the micro slots 62 are in the in the Fig. 5 illustrated embodiment arranged in parallel between upper edges 64 and lower edges 65. In other embodiments, they may also be arranged parallel to the upper edges 64 and lower edges 65 or at an angle to these standing. It is by applying a pull on side edges of the honeycomb to achieve a different shape, for example by upsetting or pulling the honeycomb.
- the connection regions 60 can also be chosen differently, so that, for example, octagons or diamonds etc. result. It is essential that there are non-bonded areas with slots 62. These do not have to be across to edges 64 and 65 as in Fig. 5 run, but can also be longitudinal or inclined.
- Fig. 6 now shows another embodiment of a composite insulation board or sandwich panel 100 with thin plates 10 after Fig. 1 and a heat insulation panel 50 Fig. 5 , It is then a combination of the two-ply plate as in Fig. 8 measured with an interposed advantageous Wammenämmstoff 50.
- the micro-slots 62 which extend here between the upper edge 64 and the lower edge 65 of the honeycomb panel 50, are shown schematically at various points.
- a micro slot 20 is also shown in the two plates 10 by way of example, wherein the plates 10 are advantageously aligned so that the narrow openings 22 are formed on the underside inwards at the edges 64, 65 of the thermal insulation material.
- a variety of micro slots 20 are present similar to those in FIG Fig. 2 or Fig. 4 shown, in a succession of many slots in a row and in many rows next to each other.
- the insulation board 50 with hexagonal honeycomb 60, it is also possible to produce other honeycomb shapes, such as triangles or octagons, as is known per se for such honeycomb structures. It is in each case advantageous in which these constituent materials, usually composed of cut strips 51, 52, etc., to introduce micro-slits which allow a further increase in the absorption rate.
- the plate material may also be plastic reinforced paper or consist of Plexiglas.
- All of these materials are machinable with proper focusing of a laser beam to create a hole which results in a micro-slit on the side facing away from the direction of irradiation and widens in a funnel shape on the side of the irradiation direction.
Landscapes
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Electromagnetism (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Laminated Bodies (AREA)
- Soundproofing, Sound Blocking, And Sound Damping (AREA)
- Building Environments (AREA)
Abstract
Description
Die vorliegende Erfindung betrifft ein schallabsorbierendes Element mit den Merkmalen des Oberbegriffs des Anspruchs 1 und ein Verfahren zur Herstellung eines flächigen schallabsorbierenden Elementes, bestehend aus einer Platte, in der eine Vielzahl von Löchern als Mikroschlitze verteilt beabstandet angeordnet sind, wobei jeder Mikroschlitz eine längliche Form aufweist.The present invention relates to a sound absorbing member having the features of the preamble of claim 1 and a method of manufacturing a sheet-like sound absorbing member consisting of a plate in which a plurality of holes are spacedly distributed as micro-slits, each micro-slit having an elongated shape ,
Ein solches schallabsorbierendes Element und ein solches Verfahren sind aus der
Solche mikroperforierten Platten können für eine breitbandige Absorption von Schall eingesetzt werden. Die Theorie hinter dieser Lehre beruht darauf, dass die Schwingungen der Luft, d.h. der Schall, effektiv durch den Einfluss von Schwerkräften innerhalb der Mikroperforationen gedämpft wird und dass in dieser Art und Weise eine breitbandige Absorption erreicht wird, ohne zusätzliche poröse Materialien einzusetzen. In dem besagten Artikel werden die Löcher mit einem Laserstrahl erzeugt.Such microperforated plates can be used for broadband absorption of sound. The theory behind this teaching is that the vibrations of the air, i. the sound is effectively damped by the influence of gravitational forces within the microperforations and that in this way a broadband absorption is achieved without using additional porous materials. In said article, the holes are generated with a laser beam.
In der
Ein anderes schallabsorbierendes plattenförmiges Absorptionselement ist aus der
Aus der
Aus der
Ausgehend von diesem Stand der Technik liegt der Erfindung die Aufgabe zugrunde, ein einfacher herzustellendes plattenförmiges Element anzugeben, welches eine gute breitbandige Absorption bietet. Ferner soll ein Verfahren zur Herstellung eines solchen plattenförmigen Elementes angegeben werden.Based on this prior art, the present invention seeks to provide a simple plate-shaped element to be produced, which offers a good broadband absorption. Furthermore, a method for producing such plate-shaped element can be specified.
Die Aufgabe wird erfindungsgemäss mit einem flächenförmigen Element mit den Merkmalen des Anspruchs 1 gelöst. Ein flächiges schallabsorbierendes Element besteht aus einer Platte, vorzugsweise einer Platte aus Polymermaterial in einer Schichtdicke von beispielsweise 2 bis 5 Millimeter, in der eine Vielzahl von Löchern als Mikroschlitze verteilt beabstandet angeordnet sind, wobei jeder Mikroschlitz eine längliche Form hat. Dabei weist jeder Mikroschlitz die Form eines Trichters mit abschnittsweise schrägen und gegebenenfalls parallelen Seitenwänden auf, die die untere kleinere Lochöffnung mit der oberen breiteren Öffnung verbinden, wobei die untere kleinere Lochöffnung eine Breite zwischen 0,05 bis 0,15 mm und eine Länge zwischen 0,5 bis 60 Millimeter, bevorzugt 1 bis 5 Millimeter aufweist.The object is achieved according to the invention with a sheet-like element having the features of claim 1. A sheet-like sound absorbing member consists of a plate, preferably a sheet of polymer material in a layer thickness of, for example, 2 to 5 millimeters, in which a plurality of holes are spaced distributed as micro-slots, each micro-slot having an elongated shape. In this case, each microslit in the form of a funnel with partially oblique and optionally parallel side walls connecting the lower lower hole opening with the upper wider opening, the lower smaller hole opening has a width between 0.05 to 0.15 mm and a length between 0 , 5 to 60 millimeters, preferably 1 to 5 millimeters.
Diese Aufgabe wird erfindungsgemäss mit einem Verfahren mit den Merkmalen des Anspruchs 9 gelöst. Dabei wird die Oberseite der Platte mit einem Laserstrahl beaufschlagt, der ausgestaltet ist, um das Material der Platte in der Tiefe wegzubrennen. Dabei ist die Optik des die Platte beaufschlagende Laserstrahl so angeordnet und ausgestaltet, dass die Taille des Laserstrahls auf den Bereich zwischen der Mitte der Dicke des Plattenmaterials bis hin zur Ebene der Unterseite der Platte fokussiert ist, derart, dass die Laserleistung bei einem hinüberstreichenden Laserstrahl ausreichend ist, um eine untere kleinere Lochöffnung mit einer Breite zwischen 0,02 bis 0,2 oder 0,05 bis 0,14 oder zum Beispiel 0,15 Millimeter zu erzeugen.This object is achieved according to the invention by a method having the features of claim 9. In this case, the top of the plate is acted upon by a laser beam which is designed to burn away the material of the plate in the depth. In this case, the optics of the laser beam acting on the plate is arranged and configured such that the waist of the laser beam is focused on the area between the center of the thickness of the plate material to the plane of the underside of the plate, such that the laser power is sufficient in the case of a scanning laser beam to produce a lower, smaller hole opening having a width of between 0.02 to 0.2 or 0.05 to 0.14 or, for example, 0.15 millimeters.
Insbesondere wird ein scannender Laser eingesetzt, also ein Laser, dessen Strahl in Zeilen über die Platte geführt wird und an Stellen, an denen die Schlitze entstehen sollen, die entsprechende Brennleistung zur Verfügung steht und in den Zwischenräumen zwischen zwei in Längsrichtung beabstandeten Mikroschlitzen der Strahl anderweitig abgelenkt, geblockt oder ausgestellt ist.In particular, a scanning laser is used, ie a laser whose beam is guided in lines over the plate and at locations where the slots are to emerge, the corresponding burning power is available and in the spaces between two longitudinally spaced micro slots of the beam otherwise distracted, blocked or exhibited.
Neben einer Anordnung von Lochreihen parallel zueinander können diese auch schräg, insbesondere senkrecht zueinander verlaufen. Dabei können die Mikroschlitze auch unterschiedliche Durchmesser im oberen Bereich aufweisen, während in der unteren kleineren Lochöffnung die Breite zwar auch unterschiedlich gewählt, aber immer zwischen 0,02 und 0,2 Millimeter, insbesondere zwischen 0,05 bis 0,15 Millimeter, beträgt.In addition to an arrangement of rows of holes parallel to each other they can also obliquely, in particular perpendicular to each other. The micro slots may also have different diameters in the upper region, while in the lower lower hole opening, the width is indeed chosen differently, but always between 0.02 and 0.2 millimeters, in particular between 0.05 to 0.15 millimeters.
Es wird insbesondere ein Laserstrahl über ein optisches System schnell über die Oberfläche bewegt. Dabei wird die Fokussierung so eingestellt, dass ein trichterförmiger Schlitz entsteht. Die Abstimmung zwischen der Laserleistung und der Bearbeitungsgeschwindigkeit wird so eingestellt, dass auf der Rückseite des Materials, also der Platte, ein Schlitz mit einer definierten minimalen Breite erzeugt wird, die zwischen ca. 0,05 ― 0,15 Millimeter liegt.In particular, a laser beam is rapidly moved across the surface via an optical system. The focus is adjusted so that a funnel-shaped slot is formed. The tuning between the laser power and the processing speed is adjusted so that on the back of the material, ie the plate, a slot is generated with a defined minimum width, which is between about 0.05 - 0.15 millimeters.
Dabei können die Eigenschaften verschieden breiter Schlitze genutzt werden. Akustikmessungen mit verschieden Breiten von Schlitzen haben gezeigt, dass sich die Absorptionskurve je nach Schlitzbreite mehr in den Tief- oder in den Hochton- Bereich verschiebt. Das heisst, dass mit dieser technischen Lehre Akustikelemente erzeugt werden können, bei denen bei der Herstellung selber direkt vorbestimmt werden kann, in welchen Frequenzbereichen die Absorption am effektivsten sein soll. Damit wird das Hindernis des Standes der Technik überwunden, bei dem solche Eigenschaften nur mit verschieden, kombinierten Absorbermaterialen erzeugt werden konnten.The properties of different width slots can be used. Acoustic measurements with different widths of slots have shown that the absorption curve shifts more into the low or the high frequency range depending on the slot width. This means that with this technical teaching acoustic elements can be produced, in which itself can be directly predetermined in the production, in which frequency ranges, the absorption should be the most effective. Thus, the obstacle of the prior art is overcome, in which such properties could be generated only with different, combined absorber materials.
Weitere Ausführungsformen sind in den abhängigen Ansprüchen angegeben.Further embodiments are given in the dependent claims.
Bevorzugte Ausführungsformen der Erfindung werden im Folgenden anhand der Zeichnungen beschrieben, die lediglich zur Erläuterung dienen und nicht einschränkend auszulegen sind. In den Zeichnungen zeigen:
- Fig. 1
- zeigt eine nicht massstäbliche Querschnittsansicht durch eine dünne Platte gemäss einem ersten Ausführungsbeispiel der Erfindung,
- Fig. 2
- zeigt eine ebenfalls nicht massstäbliche Draufsicht auf die Platte nach
Fig. 1 , - Fig. 3
- zeigt eine nicht massstäbliche Querschnittsansicht durch eine dicke Platte gemäss einem zweiten Ausführungsbeispiel mit zwei unterschiedlichen Schlitzen gemäss der Erfindung,
- Fig. 4
- zeigt eine ebenfalls nicht massstäbliche Draufsicht auf die Platte nach
Fig. 3 , - Fig. 5
- zeigt ein Ausführungsbeispiel einer Wabendämmplatte gemäss einem Ausführungsbeispiel der Erfindung;
- Fig.6
- zeigt ein weiteres Ausführungsbeispiel einer zusammengesetzten Dämmplatte mit dünnen Platten nach
Fig. 1 und einer Wabendämmplatte nachFig. 5 ; - Fig. 7
- gemessene Absorptionsspektren für einlagige Platten mit Mikroschlitzen unterschiedlicher Lochbreite, und.
- Fig. 8
- gemessene Absorptionsspektren für zweilagige Platten mit Mikroschlitzen unterschiedlicher Lochbreite.
- Fig. 1
- shows a non-scale cross-sectional view through a thin plate according to a first embodiment of the invention,
- Fig. 2
- shows a likewise not to scale top view of the plate
Fig. 1 . - Fig. 3
- shows a non-scale cross-sectional view through a thick plate according to a second embodiment with two different Slits according to the invention,
- Fig. 4
- shows a likewise not to scale top view of the plate
Fig. 3 . - Fig. 5
- shows an embodiment of a Wheimämmplatte according to an embodiment of the invention;
- Figure 6
- shows a further embodiment of a composite insulating board with thin plates after
Fig. 1 and a Wheimämmplatte afterFig. 5 ; - Fig. 7
- measured absorption spectra for single-layer plates with micro-slits of different hole widths, and.
- Fig. 8
- measured absorption spectra for two-layer plates with micro-slits of different hole widths.
Die
Die
Die Platte 10 beziehungsweise 10' besteht aus einem Polymermaterial, insbesondere aus PET, und hat eine Dicke von beispielsweise von 0,75 bis 10 Millimeter. Eine dünne Platte 10 nach
Es ist auch möglich, die Platte 10 oder 10' aus einem Metall wie Aluminium herzustellen. Es sind Materialien möglich, in denen Mikroschlitze insbesondere durch Laserlichteinstrahlung erzeugbar sind.It is also possible to make the
Die Grösse der Platte 10 oder 10' kann sich im Quadratmeterbereich, beispielsweise mit einer Grösse von 1 mal 2 Meter, bewegen, wobei in der Skizze der
In dem dargestellten ersten Ausführungsbeispiel weisen die Mikroschlitze 20 jeweils eine Länge von 4 Millimeter auf und sind in der Richtung ihrer Längsachse jeweils hintereinander angeordnet. Der seitliche Abstand zwischen zwei Bearbeitungslinien beträgt im dargestellten Ausführungsbeispiel an der Oberseite 12 ein Millimeter. Der Abstand zwischen zwei Schlitzen 20 in Längsrichtung liegt bei 2 Millimeter, üblicherweise zwischen 1,5 und 3 Millimeter.In the illustrated first embodiment, the
Bei einer Platte 10 von 1 Meter mal 1 Meter ergeben sich damit ca. 166 Mikroschlitze je Reihe und bei ca. 999 Reihen ungefähr 165'000 Mikroschlitze in der Platte. Vorteilhafterweise wird wie unten ausgeführt ein Gravurlaser verwendet, der über eine Abtasteinrichtung die einzelnen zu erzeugenden Lochreihen hintereinander abfährt und bei einer Scanrate von beispielsweise 1 Meter/Sekunde eine Platte in ungefähr 16 ½ Minuten fertigstellen kann.With a
In dem dargestellten zweiten Ausführungsbeispiel weisen die schmaleren Mikroschlitze 20 der Platte 10' unterschiedliche Längen von 3 und 6 Millimeter auf und sind ebenfalls in der Richtung ihrer Längsachse jeweils hintereinander angeordnet. Der seitliche Abstand 42 zwischen zwei Bearbeitungslinien beträgt im dargestellten Ausführungsbeispiel 1 Millimeter. Der Abstand 41 zwischen zwei Schlitzen 20 in Längsrichtung liegt bei 1 Millimeter. Auch andere Linienanordnungen mit unterschiedlichen Winkeln der einzelnen Mikroschlitze 20 beziehungsweise 120 zueinander sind möglich. In dem dargestellten zweiten Ausführungsbeispiel weisen die breiteren Mikroschlitze 120 der Platte 10' eine Länge von 1 Zentimeter auf und sind in der Richtung ihrer Längsachse jeweils hintereinander angeordnet. Der Querabstand 42 zwischen einem Mikroschlitz 120 in Längsrichtung zu einem Mikroschlitz 20 liegt bei 1 Millimeter.In the illustrated second embodiment, the narrower
Natürlich können auch andere Grössen und Dimensionen verwendet werden, so können in anderen Ausführungsbeispielen die Mikroschlitze 20 eine Länge von 1 Millimeter bis 4 Zentimeter aufweisen und einen Abstand voneinander in Längsrichtung von 1 Millimeter bis 1 Zentimeter aufweisen. Der seitliche Abstand der Reihen voneinander kann von 0,5 bis 10 Millimeter betragen. Wesentlich ist die Stabilität der Platte an sich.Of course, other sizes and dimensions may be used, so in other embodiments, the micro-slots 20 may have a length of 1 millimeter to 4 centimeters and have a longitudinal spacing of 1 millimeter to 1 centimeter. The lateral spacing of the rows from each other can be from 0.5 to 10 millimeters. Essential is the stability of the plate itself.
In der Draufsicht der
Die Breite des Schlitzes 22 sollte 0,05 bis 0,14 Millimeter, vorteilhafterweise insbesondere ca. 0,1 Millimeter betragen. Der genannte Öffnungswinkel von 5 bis 60 Grad betrifft jeweils den Winkel zwischen der Senkrechten 23 und einer der zugeordneten Öffnungsgeraden 24, so dass sich bei einem vorteilhaften Winkel von 45 Grad eine Breite des oberen Lochs 25 zu der doppelten Dicke der Platte 10 zuzüglich der Breite des unteren Lochs 22 ergibt.The width of the
Dabei ergibt sich ein Aspektverhältnis von Länge der Mikroschlitze 20 zu deren Breite im Durchbruch der unteren Öffnung 22, welches einen Wert von 20 bis 50 betragen sollte.This results in an aspect ratio of length of the
Die Qualität der Seitenwand 21, also die Homogenität dieser Oberfläche ist von geringer Relevanz. Es ist sogar besser, wenn diese Seitenwände 21 der Mikroschlitze 20 uneben sind. Dabei kann die Rauheit der Oberfläche bis zu 0,01 oder bis zu 0,05 Millimeter betragen.The quality of the
Insgesamt sollte die gesamtoffene Fläche pro Quadratmeter der Platte 10 zwischen 1 und 10 Prozent liegen, vorteilhafterweise bei ungefähr 4,4 Prozent sein. Dieser Wert entspricht dem oben genannten ersten Ausführungsbeispiel und bezieht sich auf die Fläche der kleineren Mikroschlitzöffnungen 22 auf der Unterseite 13 der Platte 10. Bei einem Öffnungswinkel von 45 Grad ist die obere Öffnung 25 bei einer Plattendicke von 1 Millimeter 2,1 Millimeter breit.Overall, the total open area per square meter of
Bei einer dicken Platte 10', wie sie beim zweiten Ausführungsbeispiel der
Diese Ausgestaltung folgt der dem Fachmann möglichen Einstellung der Laserstärke im Hinblick auf das Material und die Abtastgeschwindigkeit, weil im oberen Bereich 31 das Material durch den fokussierten Laserstrahl vollständig weggebrannt wird, während die Anordnung der Strahltaille des Laserstrahls im unteren Bereich des oberen Abschnitts 31 beziehungsweise des Übergangs zwischen dem zweiten 31 und dem ersten 32 Abschnitt dazu führt, dass bei der Scanverweildauer des Laserstrahls das Material des unteren Abschnitts 31 nur insoweit weggebrannt wird, als dass sich gerade die untere kleine Mikroschlitzöffnung 22 ausbildet, was daher zu den trichterförmigen Wänden 21 bzw. 121 führt. Es ist möglich, einen breiteren Schlitz 120 auch durch Scanbewegungen des beaufschlagenden Lichtstrahls nicht nur in Längsrichtung der Mikroschlitze 120 sondern auch in Querrichtung zu verbreitern; aber da das zu Lasten der Herstellungsgeschwindigkeit gibt, wird ein einmaliger Scan bevorzugt.This embodiment follows the adjustment of the laser power with respect to the material and the scanning speed, which is possible for the person skilled in the art, because in the
Die Mikroschlitze 20 bzw. 120 werden vorteilhafterweise durch eine Beaufschlagung durch Laserstrahlung von der Oberseite 12 der Platte 10 bzw. 10' her erzeugt, wobei es wesentlich ist, dass die Strahltaille des Laserstrahls im Bereich der Mitte der Dicke der Platte bis hin zur Unterseite 13 der Platte 10 liegt. Wesentlich ist, dass der Fachmann die Leistung des Lasers abhängig von der Farbe und dem Absorptionsverhalten des Polymermaterials oder zum Beispiel des metallenen Materials der Platte 10, 10' und der Scangeschwindigkeit, also der Zeit, die der Laserstrahl benötigt, um über einen vorbestimmten Längsweg einen Mikroschlitz 20 oder 120 zu brennen, so einstellt, dass sich mit einem Scan im Querschnitt des Schlitzes, symmetrisch zur Achse 23, der Trichter mit den schrägen Seitenwänden 21 und 121 bildet und die Tiefe des weggebrannten Materials derart ist, dass nur ein durchgehender Schlitz 22 einer Breite von ungefähr 0,1 Millimeter durchgebrannt und auf der Unterseite 13 eröffnet wird.The micro-slots 20 and 120 are advantageously produced by the application of laser radiation from the
Um die Platte 10 bzw. 10' zeitlich effizient zu bearbeiten und mit der grossen Anzahl von Mikroschlitzen zu versehen, wird ein Gravurlaser verwendet, beispielsweise ist zu Testzwecken für Platten 10 mit einer Grösse von 500 mal 500 Millimeter Grösse ein LS900XP der Firma Gravograph verwendet worden, der mit einer maximalen Leistung von 80 Watt und einer Scangeschwindigkeit von bis zu 4 Meter/Sekunde die notwendigen Leistungsdaten mit sich bringt. Es sind natürlich auch andere Laser und Ablenkungsoptiken einsetzbar.In order to process the
Wenn im folgenden von Schlitzbreite des Mikroschlitzes 20 oder 120 gesprochen wird, ist es die Schlitzbreite der trichterförmigen Verengung 21, 121 zum durchbrechenden Schlitz 22 von 0,05 bis 0,15 Millimeter im zweiten Abschnitt 32 im Material hin und nicht die grössere Breite der im wesentlichen parallelen Wände 26 über die Höhe des ersten Abschnitts 31 im Material.If the following is spoken of slot width of the
Wenn vom Absorptionsverhalten bei Reihen von regelmässig angeordneten Mikroschlitzen 20, 120 von 1,5 Millimeter Breite und definierter Länge von beispielsweise 20 Millimeter, wobei die Schlitze 20, 120 hintereinander im Abstand 41 von 15 Millimeter angeordnet sind, ausgegangen wird, so verbessert, das heisst erhöht, sich das Absorptionsverhalten bei einem längeren Schlitz von zum Beispiel 30 Millimeter und es verschlechtert, das heisst vermindert, sich bei einem kürzeren Schlitz von 10 Millimeter bei gleichem Abstand 41 voneinander. Das Absorptionsverhalten verbessert sich auch bei geringerem seitlichem Schlitzabstand (Abstand 42 plus Schlitzlänge 120 in
Weiterhin führt eine Verschmälerung der Mikroschlitze 20 im ersten parallelen Abschnitt von 0,25 Millimeter auf 0,15 oder auf 0,05 Millimeter zu einer Verschiebung des absorbierten Schalls in Richtung der Tieftöne.Furthermore, narrowing the
Die
Die
Die
Damit ist es nun zusätzlich beispielsweise möglich, wie in
Die
Anschliessend wird die Platte in Streifen 51, 52, 53 zerschnitten, beispielsweise in einer Höhe von 5 bis 20 Millimeter. Diese dünnen Streifen 51, 52, und 53 werden dann an vorbestimmten Stellen miteinander verbunden, insbesondere verklebt oder ultraschallgeschweisst, wenn es sich um entsprechend geeignetes Kunststoffmaterial handelt. Diese Verbindungsbereiche haben in den Figuren das Bezugszeichen 60 erhalten. Diese Verbindungsbereiche 60 weisen also eine doppelte Wandstärke auf und in der Regel sind die Mikroschlitze der beiden Schichten nicht deckungsgleich, so dass sie nicht oder nur teilweise durchgängig sind. Daher sind in den Verbindungsbereichen 60 der
Die Mikroschlitze 62 bestehen aber in den verbleibenden Übergangsbereichen 61 oder Wabenflächen. Die Dämmplatte 50 besteht somit aus sechseckig berandeten Waben 63. Die Mikroschlitze 62 sind in dem in der
Anstelle der Dämmplatte 50 mit ist sechseckigen Waben 60 es auch möglich andere Wabenformen, wie Dreiecke oder Achtecke herzustellen, wie es für solche Wabenstrukturen an sich bekannt ist. Es ist jeweils vorteilhaft, in den diese aufbauenden Materialien, zumeist aus geschnittenen Streifen 51, 52 etc. zusammengesetzt, Mikroschlitze einzubringen, die eine weitere Erhöhung der Absorptionsrate gestatten. Neben den genannten Polymermaterialien und Metallfolien an sich, insbesondere auch eine Aluminiumplatte, kann das Plattenmaterial auch Kunststoff verstärktes Papier sein oder aus Plexiglas bestehen. Alle diese Materialien sind mit geeigneter Fokussierung eines Laserstrahls bearbeitbar, um ein Loch zu erzeugen, welches auf der von der Bestrahlungsrichtung wegweisenden Seite einen Mikroschlitz ergibt und sich auf der Seite der Bestrahlungsrichtung trichterförmig aufweitet.Instead of the
- 10, 10'10, 10 '
- Platteplate
- 1111
- Seitenkanteside edge
- 1212
- Oberseitetop
- 1313
- Unterseitebottom
- 2020
- Mikroschlitzmicro slot
- 2121
- schräge Seitenwandsloping sidewall
- 2222
- durchgehendes Lochthrough hole
- 2323
- Lochachse im QuerschnittHole axis in cross section
- 2424
- ÖffnungsgeradeJust opening
- 2525
- obere Öffnungupper opening
- 2626
- SeitenwandSide wall
- 3131
- Parallelwand-AbschnittParallel wall portion
- 3232
- Trichterwand-AbschnittHopper wall section
- 4141
- Längsabstandlongitudinal distance
- 4242
- Querabstandtransverse distance
- 5050
- WabendämmmaterialWabendämmmaterial
- 51-5351-53
- Streifenstrip
- 6060
- verklebte Flächenbonded surfaces
- 6161
- Wabenflächehoneycomb surface
- 6262
- Lochmusterhole pattern
- 6363
- Wabenhoneycomb
- 6464
- Oberkantetop edge
- 6565
- Unterkantelower edge
- 100100
- Sandwichplattesandwich panel
- 120120
- Mikroschlitzmicro slot
- 121121
- schräge Seitenwandsloping sidewall
- 210-240210-240
- Absorptionsspektrenabsorption spectra
Claims (15)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP11172426.6A EP2540926B1 (en) | 2011-07-01 | 2011-07-01 | Acoustic dampening element and method for manufacturing the same |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP11172426.6A EP2540926B1 (en) | 2011-07-01 | 2011-07-01 | Acoustic dampening element and method for manufacturing the same |
Publications (3)
Publication Number | Publication Date |
---|---|
EP2540926A1 true EP2540926A1 (en) | 2013-01-02 |
EP2540926A8 EP2540926A8 (en) | 2013-03-27 |
EP2540926B1 EP2540926B1 (en) | 2013-11-27 |
Family
ID=44905343
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP11172426.6A Not-in-force EP2540926B1 (en) | 2011-07-01 | 2011-07-01 | Acoustic dampening element and method for manufacturing the same |
Country Status (1)
Country | Link |
---|---|
EP (1) | EP2540926B1 (en) |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104695570A (en) * | 2013-12-06 | 2015-06-10 | 奇想创造事业股份有限公司 | Sheet with bi-directional formed micropores, and manufacturing method of sheet |
EP2937483A1 (en) * | 2014-04-24 | 2015-10-28 | STIA - Holzindustrie Gesellschaft m.b.H. | Building panel, in particular wall or ceiling panel |
CN106223506A (en) * | 2016-08-04 | 2016-12-14 | 常熟市嘉淀纺织有限公司 | Environment friendly acoustical absorption plate |
US10068563B2 (en) * | 2015-11-18 | 2018-09-04 | Rpg Acoustical Systems Llc | Sound absorbing panel with wedge-shaped cross-section micro-slits |
WO2019057233A1 (en) * | 2017-09-19 | 2019-03-28 | SWAP (Sachsen) GmbH Verbundwerkstoffe | Composite panel system |
WO2019057232A1 (en) * | 2017-09-19 | 2019-03-28 | SWAP (Sachsen) GmbH Verbundwerkstoffe | Active composite panel system and method for obtaining active composite panel systems using electroacoustic transducers |
CN110629896A (en) * | 2019-09-23 | 2019-12-31 | 江苏融鼎建筑科技有限公司 | Selective one-way sound insulation wall based on house building |
LU101991A1 (en) * | 2019-08-23 | 2021-02-23 | Van Eycken Metal Construction Bvba | ANTI-NOISE SCREENS AND MANUFACTURING METHOD |
EP4311893A1 (en) | 2022-07-29 | 2024-01-31 | Admonter Holzindustrie AG | Building panel |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1147428A (en) * | 1966-09-16 | 1969-04-02 | Acoustics And Architecture Ltd | Improvements in or relating to sound absorbent panels |
EP0876539A1 (en) | 1996-01-25 | 1998-11-11 | Dale Knipstein | Soundabsorbing element and procedure for manufacture of this element and use of this element |
WO2000014353A1 (en) * | 1998-09-02 | 2000-03-16 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Plate-shaped component |
WO2002003375A1 (en) * | 2000-06-30 | 2002-01-10 | 3M Innovative Properties Company | Shaped microperforated polymeric film sound absorbers and methods of manufacturing the same |
WO2006114090A2 (en) | 2005-04-25 | 2006-11-02 | Richter Furniertechnik Gmbh & Co. Kg | Light building board comprising a honeycomb core |
EP1950357A1 (en) | 2007-01-29 | 2008-07-30 | Akustik & Raum AG | Acoustic elements |
EP2015291A1 (en) | 2007-07-13 | 2009-01-14 | Akustik & Raum AG | Acoustic elements |
-
2011
- 2011-07-01 EP EP11172426.6A patent/EP2540926B1/en not_active Not-in-force
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1147428A (en) * | 1966-09-16 | 1969-04-02 | Acoustics And Architecture Ltd | Improvements in or relating to sound absorbent panels |
EP0876539A1 (en) | 1996-01-25 | 1998-11-11 | Dale Knipstein | Soundabsorbing element and procedure for manufacture of this element and use of this element |
WO2000014353A1 (en) * | 1998-09-02 | 2000-03-16 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Plate-shaped component |
WO2002003375A1 (en) * | 2000-06-30 | 2002-01-10 | 3M Innovative Properties Company | Shaped microperforated polymeric film sound absorbers and methods of manufacturing the same |
WO2006114090A2 (en) | 2005-04-25 | 2006-11-02 | Richter Furniertechnik Gmbh & Co. Kg | Light building board comprising a honeycomb core |
EP1950357A1 (en) | 2007-01-29 | 2008-07-30 | Akustik & Raum AG | Acoustic elements |
EP2015291A1 (en) | 2007-07-13 | 2009-01-14 | Akustik & Raum AG | Acoustic elements |
Non-Patent Citations (1)
Title |
---|
H.V. FUX, AKUSTIKA, vol. 81, no. 95, pages 107 - 116 |
Cited By (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104695570A (en) * | 2013-12-06 | 2015-06-10 | 奇想创造事业股份有限公司 | Sheet with bi-directional formed micropores, and manufacturing method of sheet |
WO2015081755A1 (en) * | 2013-12-06 | 2015-06-11 | 奇想创造事业股份有限公司 | Sheet provided with bidirectional forming micropore, and manufacturing method therefor |
EP2937483A1 (en) * | 2014-04-24 | 2015-10-28 | STIA - Holzindustrie Gesellschaft m.b.H. | Building panel, in particular wall or ceiling panel |
AT515748A1 (en) * | 2014-04-24 | 2015-11-15 | Stia Holzindustrie Ges M B H | Building board, in particular wall or ceiling panel |
AT515748B1 (en) * | 2014-04-24 | 2017-09-15 | Stia - Holzindustrie Ges M B H | Building board, in particular wall or ceiling panel |
US10068563B2 (en) * | 2015-11-18 | 2018-09-04 | Rpg Acoustical Systems Llc | Sound absorbing panel with wedge-shaped cross-section micro-slits |
CN106223506A (en) * | 2016-08-04 | 2016-12-14 | 常熟市嘉淀纺织有限公司 | Environment friendly acoustical absorption plate |
WO2019057232A1 (en) * | 2017-09-19 | 2019-03-28 | SWAP (Sachsen) GmbH Verbundwerkstoffe | Active composite panel system and method for obtaining active composite panel systems using electroacoustic transducers |
WO2019057233A1 (en) * | 2017-09-19 | 2019-03-28 | SWAP (Sachsen) GmbH Verbundwerkstoffe | Composite panel system |
LU101991A1 (en) * | 2019-08-23 | 2021-02-23 | Van Eycken Metal Construction Bvba | ANTI-NOISE SCREENS AND MANUFACTURING METHOD |
BE1027517B1 (en) * | 2019-08-23 | 2021-03-23 | Van Eycken Metal Construction Bvba | SOUND SCREENS AND METHOD OF MAKING THESE |
NL2026321A (en) * | 2019-08-23 | 2021-03-24 | Van Eycken Metal Construction Bvba | SOUND SCREENS AND METHOD OF MAKING THESE |
CN110629896A (en) * | 2019-09-23 | 2019-12-31 | 江苏融鼎建筑科技有限公司 | Selective one-way sound insulation wall based on house building |
EP4311893A1 (en) | 2022-07-29 | 2024-01-31 | Admonter Holzindustrie AG | Building panel |
AT526400A1 (en) * | 2022-07-29 | 2024-02-15 | Admonter Holzindustrie Ag | Building plate |
AT526400B1 (en) * | 2022-07-29 | 2024-05-15 | Admonter Holzindustrie Ag | Building board |
Also Published As
Publication number | Publication date |
---|---|
EP2540926A8 (en) | 2013-03-27 |
EP2540926B1 (en) | 2013-11-27 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP2540926B1 (en) | Acoustic dampening element and method for manufacturing the same | |
DE60309112T2 (en) | Sound-absorbing layer for a sound-absorbing panel and a panel with such a layer | |
DE60103352T2 (en) | Acoustic plate with sandwich construction | |
EP0504629B1 (en) | Panel-like sound absorbing element, and sound absorbing arrangement | |
EP1815460B1 (en) | Cover layer and panel with sound-absorption properties and method for producing said layer and panel | |
EP2937483B1 (en) | Building panel, in particular wall or ceiling panel | |
DE2402877A1 (en) | SOUND ABSORBING PLATE | |
EP2015291B1 (en) | Acoustic elements | |
EP1950357B1 (en) | Acoustic elements | |
EP2579248A2 (en) | Method for producing a two or three-layer sound-absorbing board and sound-absorbing board | |
EP1933086A1 (en) | Building component with at least one illuminant | |
DE2725186A1 (en) | SOUND ABSORBING DEVICE | |
DE19505025A1 (en) | Sound proofing panel with surface recesses | |
EP3643848A1 (en) | Structural element for reflection and/or light scatter and/or absorption of acoustic waves, system comprising a structural element or a plurality of structural elements, corresponding method for manufacturing a structural element and their use | |
DE102005016653A1 (en) | Sandwich unit for interior lining of fuselage cabin of aircraft, has cover layers on sides of structure and including passages with cross sectional surfaces to permit sound transmission, and cover arranged on one layer and having openings | |
EP0745738B1 (en) | Acoustic panel as well as procedure for production of the same | |
WO2011024034A1 (en) | Shaped article for absorbing, reflecting and/or attenuating airborne sound waves | |
CH713133B1 (en) | Sound absorbing element. | |
DE1784524C3 (en) | Sound absorbing and warm insulating composite material | |
EP2575127B1 (en) | Acoustic absorption element | |
EP2338676B1 (en) | Lightweight construction board and method for its production | |
AT526400B1 (en) | Building board | |
EP1406792B1 (en) | Soundproofing element | |
AT4807U1 (en) | SOUND ABSORBING PANEL | |
DE102019118591B4 (en) | sound absorber arrangement |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR |
|
AX | Request for extension of the european patent |
Extension state: BA ME |
|
RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: AKUSTIK & INNOVATION GMBH |
|
GRAP | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOSNIGR1 |
|
17P | Request for examination filed |
Effective date: 20130626 |
|
RBV | Designated contracting states (corrected) |
Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR |
|
RIC1 | Information provided on ipc code assigned before grant |
Ipc: E04B 1/86 20060101AFI20130716BHEP Ipc: E04B 1/84 20060101ALN20130716BHEP |
|
RIC1 | Information provided on ipc code assigned before grant |
Ipc: E04B 1/86 20060101AFI20130719BHEP Ipc: E04B 1/84 20060101ALN20130719BHEP |
|
INTG | Intention to grant announced |
Effective date: 20130805 |
|
GRAS | Grant fee paid |
Free format text: ORIGINAL CODE: EPIDOSNIGR3 |
|
GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR |
|
REG | Reference to a national code |
Ref country code: GB Ref legal event code: FG4D Free format text: NOT ENGLISH |
|
REG | Reference to a national code |
Ref country code: CH Ref legal event code: EP |
|
REG | Reference to a national code |
Ref country code: AT Ref legal event code: REF Ref document number: 642800 Country of ref document: AT Kind code of ref document: T Effective date: 20131215 |
|
REG | Reference to a national code |
Ref country code: IE Ref legal event code: FG4D Free format text: LANGUAGE OF EP DOCUMENT: GERMAN |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R096 Ref document number: 502011001702 Country of ref document: DE Effective date: 20140123 |
|
REG | Reference to a national code |
Ref country code: CH Ref legal event code: NV Representative=s name: ISLER AND PEDRAZZINI AG, CH |
|
REG | Reference to a national code |
Ref country code: NL Ref legal event code: VDEP Effective date: 20131127 |
|
REG | Reference to a national code |
Ref country code: LT Ref legal event code: MG4D |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: NO Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20140227 Ref country code: IS Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20140327 Ref country code: HR Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20131127 Ref country code: LT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20131127 Ref country code: NL Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20131127 Ref country code: SE Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20131127 Ref country code: FI Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20131127 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: ES Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20131127 Ref country code: RS Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20131127 Ref country code: LV Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20131127 Ref country code: CY Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20131127 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: PT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20140327 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: EE Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20131127 |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R097 Ref document number: 502011001702 Country of ref document: DE |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: RO Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20131127 Ref country code: PL Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20131127 Ref country code: CZ Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20131127 Ref country code: SK Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20131127 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: DK Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20131127 |
|
PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
26N | No opposition filed |
Effective date: 20140828 |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R097 Ref document number: 502011001702 Country of ref document: DE Effective date: 20140828 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: SI Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20131127 Ref country code: LU Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20140701 |
|
REG | Reference to a national code |
Ref country code: IE Ref legal event code: MM4A |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: ST Effective date: 20150331 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: IT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20131127 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: FR Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20140731 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: IE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20140701 |
|
GBPC | Gb: european patent ceased through non-payment of renewal fee |
Effective date: 20150701 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: SM Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20131127 Ref country code: MC Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20131127 Ref country code: GB Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20150701 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: BG Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20131127 Ref country code: MT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20131127 Ref country code: GR Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20140228 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: TR Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20131127 Ref country code: BE Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20140731 Ref country code: HU Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT; INVALID AB INITIO Effective date: 20110701 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: DE Payment date: 20160822 Year of fee payment: 6 Ref country code: CH Payment date: 20160712 Year of fee payment: 6 |
|
REG | Reference to a national code |
Ref country code: AT Ref legal event code: MM01 Ref document number: 642800 Country of ref document: AT Kind code of ref document: T Effective date: 20160701 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: AT Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20160701 |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R119 Ref document number: 502011001702 Country of ref document: DE |
|
REG | Reference to a national code |
Ref country code: CH Ref legal event code: PL |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: DE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20180201 Ref country code: CH Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20170731 Ref country code: LI Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20170731 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: MK Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20131127 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: AL Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20131127 |