EP2072704A2 - Elément de cloison de séparation - Google Patents

Elément de cloison de séparation Download PDF

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Publication number
EP2072704A2
EP2072704A2 EP08021950A EP08021950A EP2072704A2 EP 2072704 A2 EP2072704 A2 EP 2072704A2 EP 08021950 A EP08021950 A EP 08021950A EP 08021950 A EP08021950 A EP 08021950A EP 2072704 A2 EP2072704 A2 EP 2072704A2
Authority
EP
European Patent Office
Prior art keywords
partition
element according
sound absorption
sound
partition wall
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.)
Withdrawn
Application number
EP08021950A
Other languages
German (de)
English (en)
Inventor
Reinhard Weber
Peter Neuberger
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.)
VS Vereinigte Spezialmobelfabriken GmbH and Co KG
Original Assignee
VS Vereinigte Spezialmobelfabriken 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 VS Vereinigte Spezialmobelfabriken GmbH and Co KG filed Critical VS Vereinigte Spezialmobelfabriken GmbH and Co KG
Publication of EP2072704A2 publication Critical patent/EP2072704A2/fr
Withdrawn legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B2/00—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
    • E04B2/74—Removable non-load-bearing partitions; Partitions with a free upper edge
    • E04B2/7407—Removable non-load-bearing partitions; Partitions with a free upper edge assembled using frames with infill panels or coverings only; made-up of panels and a support structure incorporating posts
    • E04B2/7416—Removable non-load-bearing partitions; Partitions with a free upper edge assembled using frames with infill panels or coverings only; made-up of panels and a support structure incorporating posts with free upper edge, e.g. for use as office space dividers
    • E04B2/7422—Removable non-load-bearing partitions; Partitions with a free upper edge assembled using frames with infill panels or coverings only; made-up of panels and a support structure incorporating posts with free upper edge, e.g. for use as office space dividers with separate framed panels without intermediary support posts
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47B—TABLES; DESKS; OFFICE FURNITURE; CABINETS; DRAWERS; GENERAL DETAILS OF FURNITURE
    • A47B83/00—Combinations comprising two or more pieces of furniture of different kinds
    • A47B83/04—Tables combined with other pieces of furniture
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47B—TABLES; DESKS; OFFICE FURNITURE; CABINETS; DRAWERS; GENERAL DETAILS OF FURNITURE
    • A47B2220/00—General furniture construction, e.g. fittings
    • A47B2220/13—Sound or noise reduction or dampening, e.g. built in via the furniture panels
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/62—Insulation or other protection; Elements or use of specified material therefor
    • E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
    • E04B1/82—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to sound only
    • E04B1/84—Sound-absorbing elements
    • E04B2001/8457—Solid slabs or blocks
    • E04B2001/8461—Solid slabs or blocks layered
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/62—Insulation or other protection; Elements or use of specified material therefor
    • E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
    • E04B1/82—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to sound only
    • E04B1/84—Sound-absorbing elements
    • E04B2001/8457—Solid slabs or blocks
    • E04B2001/8476—Solid slabs or blocks with acoustical cavities, with or without acoustical filling
    • E04B2001/848—Solid slabs or blocks with acoustical cavities, with or without acoustical filling the cavities opening onto the face of the element
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B2/00—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
    • E04B2/74—Removable non-load-bearing partitions; Partitions with a free upper edge
    • E04B2002/7483—Details of furniture, e.g. tables or shelves, associated with the partitions

Definitions

  • the present invention relates to a partition wall element, in particular a partition wall element as privacy shield for dividing rooms such as open-plan offices.
  • partition elements are well known and typically include at least one partition body and a frame structure for receiving and holding the at least one partition body.
  • partition elements can be combined or connected together, for example, to divide smaller workplaces in open-plan offices.
  • partition wall elements with its own, preferably movable stand device as well as solid, on other pieces of furniture such as tables and chests or on the building mountable partition wall elements.
  • the partition wall body of this known partition element consists of two outer panels made of wood soft fiber, cardboard or the like and an inner plate between the two outer panels, which is made of corrugated cardboard such that the corrugated cardboard is folded several times in itself in the direction of the length of the partition body.
  • the DE 25 18 955 A1 a partition element consisting of two outer shells and a multi-layer mat between the two outer shells.
  • the mat is constructed of an air-impermeable and flexible material layer and at least one sound-absorbing material layer.
  • the sound-absorbing material layer is preferably made of a material with a broadband high sound absorption capacity such as mineral fiber wool or loose felts of metal, plastic or inorganic fibers.
  • the DE 26 50 886 C2 describes a sound absorbing panel comprising a pair of cladding panels made of a thin metal perforated plate and a honeycomb-shaped honeycomb core core. In addition, the two cladding panels are covered with a layer of a porous, sound-absorbing material.
  • a ceiling or wall element in the form of a lightweight board is known, which is composed essentially of a relatively thin, self-supporting cladding layer (eg aluminum or steel sheet) and a stiffening layer of solidified expanded glass granules, ceramic foam or a similarly rigid material.
  • a stiffening layer of solidified expanded glass granules, ceramic foam or a similarly rigid material.
  • an acoustic fleece may be provided between the lining layer and the stiffening layer.
  • the DE 34 02 967 A1 a wall member having a frame construction and a wall body, the wall body including a first orifice plate, a first nonwoven fabric, a sound absorbing layer of felt mats, a second nonwoven fabric and a second orifice plate arranged in this order in the thickness direction of the wall body.
  • this wall element it is proposed to provide two sound-absorbing layers with a sound passage barrier in between or a sound-absorbing layer in conjunction with a sound reflection plate.
  • the sound-absorbing layer of this wall body itself is formed of a material having cavities, in the thickness direction of the wall body, no further cavity is provided in addition to this layer.
  • the present invention has for its object to provide a partition wall element of the type mentioned above with good sound-absorbing properties and simple structure.
  • the partition member of the invention has at least one partition body and a frame structure for receiving and holding the at least one partition body.
  • the partition body has a first outer plate in the form of a micro-perforated sheet, a first nonwoven fabric, a sound absorber and a second outer plate sequentially arranged in the thickness direction of the partition body.
  • the sound absorbing means includes at least one sound absorbing member of a certain dimension in the thickness direction of the partition body and at least one cavity of a certain dimension in the thickness direction of the partition body.
  • the first outer panel of the partition body in the form of a micro-perforated sheet provides an attractive design for the partition member while permitting sound waves to penetrate into the interior of the partition body.
  • the low frequency sound waves for example in the range of about 500 Hz
  • the higher frequency sound waves for example in the range of about 1,000 to 2,000 Hz
  • the partition wall element constructed according to the invention thus has both positive sound absorption properties and positive design properties with a simple design with few components and is advantageously suitable for subdividing, for example, open-plan offices.
  • the sound absorption device of the partition wall element comprises at least one sound absorption element of a certain dimension in the thickness direction of the partition wall body and at least one cavity - as of the at least one sound absorbing element separate component - a certain dimension in the thickness direction of the partition body.
  • the material thickness of the sound absorption element in the thickness direction of the partition wall body must be chosen to be smaller due to the additional cavity and this affects the absorption of low-frequency sound waves, it has surprisingly been found that the provision of the two components of sound absorption element and Cavity in the invention defined construction of the partition wall element to a very good overall sound absorption properties of the partition wall element, in particular a partition element for dividing open-plan offices and the like, leads.
  • the sound absorbing means of the partition body includes two sound absorbing members which are spaced from each other to form the at least one cavity in the thickness direction of the partition body.
  • the sound absorbing means includes a sound absorbing member which is spaced apart from the second outer panel to form the at least one cavity in the thickness direction of the partition body.
  • the at least one cavity can be formed by means of at least one spacer element.
  • This spacer is designed, for example, in the manner of a frame.
  • At least one bulkhead element for reducing the sound passage through the sound absorption device may be introduced into the at least one cavity.
  • This at least one bulkhead element is selected, for example, from a substantially flat bulkhead element, a corrugated bulkhead element and a canted bulkhead element.
  • the sound absorbing means has a substantially symmetrical structure in the thickness direction of the partition body, so that the Partition element from both sides can have substantially the same acoustic properties.
  • the first nonwoven fabric may be bonded to the first outer panel, for example by a hotmelt process.
  • the second outer plate may also be formed in the form of a micro-perforated sheet and may be disposed between the sound absorbing means and the second outer plate of the partition body a second web, preferably glued to the second outer plate, for example by a hot melt process is.
  • the material of the at least one sound absorption element of the sound absorption device of the partition wall body according to the invention may for example be selected from mineral foam, mineral fibers, nonwoven, cardboard, foam and felt.
  • the sound absorbing member is a cardboard with a honeycomb structure or a wave form, wherein the cavities of the cardboard are preferably bonded together, or the material of the sound absorbing member is a melamine resin foam or a polyester wadding.
  • the partition wall element further comprises a stand device with or without rollers to form a mobile, autonomously deployable partition element.
  • the partition wall element further comprises a fastening device for mounting the partition wall element on a piece of furniture such as a table, a dresser or the like or on a building component such as a room wall or the like.
  • Fig. 1 shows as a first embodiment, a mobile partition element, which can be used for variable subdivision, for example, of open-plan offices.
  • the partition wall element 10 consists essentially of a preferably rigid frame construction 12-16, at least one partition wall body 18 and a standing device 20.
  • the frame construction 12-16 has two vertical clamping rails 12, between which the partition wall body 18 is held substantially vertically.
  • Above and below the partition body 18 is preferably covered by an upper cover profile 14 and a lower cover profile 16.
  • the stand device 20 is in the in Fig. 1 illustrated embodiment of two feet, which are firmly connected to the frame structure 12-16.
  • the present invention is not limited to the stand apparatus shown here.
  • only one or more than two feet may be used instead of the two feet Fig. 1 be provided; the feet may be offset inwardly instead of at the outer edges of the frame structure 12-16; and / or the pedestal (s) may be provided with rollers to facilitate the displaceability of the partition member 10 and thereby increase its mobility.
  • a partition body 18 is received and held.
  • two or more partition wall bodies 18 may be received, which abut each other.
  • FIG. 2 a second embodiment of a partition element of the invention will be explained.
  • a workstation arrangement comprises a table 22 and two partition wall elements 10.
  • the table 22 essentially has a table top 24 and two different legs in this embodiment 26.
  • the table 22 is also provided with a table frame in the vicinity of the peripheral edges of the table top 24 or with a frame for supporting the table top 24, to which also the various legs 26 can be attached.
  • the two partition wall elements 10 are basically the same as the above with reference to Fig. 1 explained partition wall element 10 constructed. The same components are therefore provided with the same reference numerals as in the above first embodiment and their repeated description is omitted. Of course, however, arrangements with only one partition element 10 or more than two partition elements 10 are possible.
  • the partition wall elements 10 in Fig. 2 differ from the partition wall element 10 of the first embodiment in that they do not have their own stand device 20, but by means of suitable fastening elements (not shown), which can be fixed, for example, on the vertical clamping rails 12 preferably at any height, at the trailing edge of the table 22, for example, directly to the table top 24 or on a table frame or a frame construction, can be mounted.
  • partition wall elements 10 of Fig. 2 be mounted on other pieces of furniture than at a table 22, for example, on dressers and the like.
  • the partition wall elements of the invention can be mounted on building components by means of suitable fastening devices become. For example, they are attached laterally to a room wall and / or at the bottom of the floor. The connection to a ceiling is possible.
  • the partition body 18 at its vertical outer edges preferably formed with an outer profile which substantially corresponds to the mating profile of the vertical clamping rails 12, so that the partition wall body 18 can be fixedly connected to the vertical clamping rails 12 of the frame structure 12-16.
  • the invention is not on the in Fig. 3 limited profile shown.
  • first outer plate 30 is formed as a micro-perforated plate, on the inside of a first non-woven fabric 34 is glued, for example by means of a hot melt process.
  • second outer panel 32 is also in the form of a microhole sheet, on the inside of which a second nonwoven fabric 36 is adhered, for example by means of a hot melt process.
  • the second outer plate 32 is simply formed from a plate made of wood, metal or plastic as in conventional partition elements and optionally provided with a decorative layer.
  • the micro-perforated sheets for the first and second outer plates 30, 32 are thin metal sheets, preferably sheet steel, having a thickness b of, for example, about 1 mm.
  • the holes of the micro hole plate are formed and arranged in a preferred embodiment according to the standardization 1.1 / 2 RV. That is, the holes each have a diameter d of about 1.1 mm and in a staggered arrangement (in Contrary to a regular square arrangement) a distance w in the longitudinal direction and in the diagonal direction of the outer plate 30, 32 of about 2 mm.
  • the present invention is not limited to micro-perforated sheets having the exemplified numerical values for the first and second outer plates 30, 32.
  • the micro-perforated sheet Due to its perforation, the micro-perforated sheet on the one hand allows penetration of sound waves into the interior of the partition wall body 18 of the partition wall element 10 according to the invention and also offers an attractive design, so that additional decorative layers can be dispensed with on the outer sides of the two outer plates 30, 32 formed as micro-perforated sheets. In part, micro-perforated sheets can also be found on the exterior walls of modern office furniture, resulting in a uniform appearance of the components in the open-plan office in this case.
  • An acoustically effective nonwoven fabric is preferably used for the first and the second nonwoven fabric 34, 36, so that the sound waves can penetrate into the interior of the dividing wall body 18 between the two outer plates 30, 32 so as to be able to penetrate between the outer plates 30 respectively coated with the nonwoven 34, 36 32 to be reflected back and forth while losing their energy.
  • This construction is particularly effective for higher frequency sound absorption in the range of, for example, about 1,000 to 2,000 Hz.
  • colored webs 34, 36 may specifically affect the design of the divider panel 18 as they shine through the perforations of the microhole panels 30, 32.
  • the sound absorption device 38 arranged in the interior of the partition wall body 18 between the first and the second outer plate 30, 32 serves, on the one hand, to absorb low-frequency sound waves of, for example, about 500 Hz and at the same time as a support for the two outer plates 30, 32.
  • the central sound absorbing element 38 with the two outer panels 30, 32 and the two webs 34, 36 also glued.
  • Fig. 5 shows a partition body 18 with a sound absorber 38, which between the first and the second outer plate 30, 32, each with an acoustic fleece 34, 36 are bonded, and is composed of two sound absorbing elements 40, 42 is constructed.
  • the sound absorbing members 40, 42 are in the thickness direction (up / down direction in FIG Fig. 5 ) of the partition body 18 arranged one behind the other, wherein with the aid of a spacer element 44, a cavity 46 between the two sound absorbing elements 40, 42 is formed.
  • the spacer 44 is configured, for example, in the manner of a frame and made of metal, wood and / or plastic, for example.
  • the two sound absorption elements 40, 42 are bonded to the spacer element 44 and the entire sound absorption device 38 via the webs 34, 36 bonded to the two outer plates 30, 32, so that a stable composite is formed.
  • a frame-shaped spacer element 44 instead of a frame-shaped spacer element 44, of course, strip-shaped, block-shaped or differently shaped spacer elements can be used. Also, optionally, only one or more spacer elements 44 in the direction transverse to the thickness direction of the partition body 18 (ie, right / left direction and direction perpendicular to the plane in FIG Fig. 5 ) be provided.
  • a divider panel 18 is shown having a sound absorber 38 formed of a single sound absorbing member 48 and a cavity 46 adjacent thereto.
  • the cavity 46 is as in the first embodiment of Fig. 5 formed by a frame-like spacer 44.
  • the third embodiment of Fig. 7 differs from the first embodiment of Fig. 5 in that the sound absorption device 38 has a bulkhead element 50 in the cavity 46 between the two sound absorption elements 40, 42.
  • This bulkhead element 50 is designed as a corrugated bulkhead element formed and, for example, made of metal (aluminum, steel), plastic and / or glass, preferably without openings. It does not completely fill the cavity 46 and is intended to reduce the sound passage through the divider body 18.
  • the bulkhead element 52 is formed in the cavity 46 between the two sound absorption elements 40, 42 as a canted bulkhead element.
  • the edge profile of the bulkhead element 52 may, for example, be rectangular, trapezoidal, triangular or in a similar shape.
  • the bulkhead element 50 or 52 keeps the two sound absorption elements 40, 42 at a distance.
  • Fig. 9 shows a further embodiment of a sound absorption device according to the invention 38.
  • the cavity 46 between the two sound absorbing elements 40, 42 by two in the thickness direction of the partition wall body 18 successively arranged spacer elements 54, 56 is formed.
  • the spacer elements 54, 56 may analogously to the embodiment of Fig. 5 be designed in the manner of a frame.
  • a bulkhead member 58 is held, which is to reduce the sound passage through the partition body 18.
  • the bulkhead member 58 is in the example of Fig. 9 designed as a substantially flat bulkhead element, preferably without openings.
  • corrugated and / or folded bulkhead elements can also be used in this embodiment.
  • the sound absorption device 38 of Fig. 6 an asymmetrical structure in the thickness direction of the partition body 18.
  • a symmetrical structure provides the Advantage that the partition body 18 has substantially the same acoustic properties from both sides. Depending on the application, it may also be desirable to have different acoustic properties on both sides of the partition body 18. It is then also possible to use the embodiments of Fig. 5, 7 . 8 and 9 To make asymmetrical, for example, by the two sound absorbing elements 40, 42 have different thicknesses and / or be formed of different materials.
  • a plurality of bulkhead elements 50, 52, 58 to be arranged in the thickness direction of the partition body 18 in a row. Further, more than two sound absorbing members 40, 42 and more than one cavity 46 may be arranged in the thickness direction of the partition wall body 18.
  • the sound absorbing members 40, 42, 48 of the above-described partition wall bodies 18 are each preferably made of a material selected from mineral foam, mineral fibers, nonwoven fabric, cardboard, foam, felt and the like.
  • the sound absorbing elements 40, 42, 48 may be formed from a cardboard with a honeycomb structure or a wave form. To increase the sound absorbing effect, the cavities of this cardboard can be additionally connected to each other in the main propagation direction of the partition body 18.
  • the material of the sound absorbing elements 40, 42, 48 of the partition wall body 18 is a melamine resin foam or a polyester wadding.
  • those skilled in the art of acoustics will readily recognize other materials and / or combinations of materials for the sound absorbing elements.
  • the total thickness of the partition wall body 18 of the partition wall element 10 according to the invention is for example in the range of about 15 to 75 mm, the total thickness
  • the sound absorption device 38 is for example in the range of about 10 to 50 mm, without the invention being limited to these numerical values.
  • each have a partition wall body 18 is used with only one sound absorbing means 38 between the two outer plates 30, 32, it is of course also possible in the present invention, between the first and the second outer plate 30, 32nd several sound absorbing devices 38 with the same or different materials and constructions behind each other and / or next to each other to arrange.
  • both outer plates 30, 32 of the partition wall body 18 of the partition wall member 10 according to the invention were formed in the form of a microhole sheet and internally coated with a nonwoven fabric 34, 36 to achieve a bilateral sound absorbing effect of the partition wall member 10.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Building Environments (AREA)
  • Soundproofing, Sound Blocking, And Sound Damping (AREA)
EP08021950A 2007-12-19 2008-12-17 Elément de cloison de séparation Withdrawn EP2072704A2 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE202007017699U DE202007017699U1 (de) 2007-12-19 2007-12-19 Trennwandelement

Publications (1)

Publication Number Publication Date
EP2072704A2 true EP2072704A2 (fr) 2009-06-24

Family

ID=40379073

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08021950A Withdrawn EP2072704A2 (fr) 2007-12-19 2008-12-17 Elément de cloison de séparation

Country Status (3)

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US (1) US20090159363A1 (fr)
EP (1) EP2072704A2 (fr)
DE (1) DE202007017699U1 (fr)

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DE102010051583A1 (de) * 2010-11-05 2012-05-10 Progress-Werk Oberkirch Ag Schallabsorbierendes Abschirmelement
WO2013050908A1 (fr) * 2011-10-06 2013-04-11 Koninklijke Philips Electronics N.V. Séparation de bureau
CH706439A1 (de) * 2012-04-26 2013-10-31 Akustik & Raum Ag Schallabsorbierendes Element.
DE202013011608U1 (de) 2013-12-23 2014-02-20 REISS Büromöbel GmbH Akustikwandelement
WO2015112080A1 (fr) * 2014-01-22 2015-07-30 Ab Edsbyverken Écran, système de cloison-écran et procédé de fabrication d'écran
EP2990557B1 (fr) * 2014-08-29 2018-07-18 Mascagni S.P.A. Panneau pour parois, plafonds, faux plafonds, surfaces de plancher, éléments de meubles et similaires
ITUB20152261A1 (it) * 2015-07-17 2017-01-17 Mecaer Aviation Group S P A Pannello multistrato per l'insonorizzazione di interni aeronautici
JP1611424S (fr) * 2017-10-02 2018-08-20
JP1604985S (fr) * 2017-10-02 2018-05-28
JP1604984S (fr) * 2017-10-02 2018-05-28
US10694848B2 (en) * 2017-10-20 2020-06-30 Jeanne CIAPONI Interchangeable drawer cover for furniture
USD866201S1 (en) * 2018-02-01 2019-11-12 James A. Ogilvie Portable collapsible wind screen
US20210206469A1 (en) * 2020-01-06 2021-07-08 Gulfstream Aerospace Corporation Interior panel having micro-perforated holes for an interior of an aircraft and a method for making the same
WO2023014549A1 (fr) * 2021-08-05 2023-02-09 Armstrong World Industries, Inc. Panneau acoustique
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DE202007007930U1 (de) 2007-06-05 2007-09-06 Lindner Ag Decken- oder Wandelement

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DE2518955A1 (de) 1975-04-29 1976-11-18 Costa Silard Dipl I Vasiljevic Aus mehreren wandschalen gebildete trennwand
DE2650886C2 (fr) 1975-11-14 1988-09-29 Haworth Mfg., Inc., Holland, Mich., Us
DE3402967A1 (de) 1984-01-28 1985-08-01 Walter 5000 Köln Blusch Akustische wand
DE20216162U1 (de) 2002-10-21 2003-01-09 VS Vereinigte Spezialmöbelfabriken GmbH & Co., 97941 Tauberbischofsheim Trennwandelement
DE202007007930U1 (de) 2007-06-05 2007-09-06 Lindner Ag Decken- oder Wandelement

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DE202007017699U1 (de) 2009-02-26
US20090159363A1 (en) 2009-06-25

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