GB2472309A - Acoustic panel comprising a sound absorbing layer within a polymeric envelope - Google Patents

Acoustic panel comprising a sound absorbing layer within a polymeric envelope Download PDF

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Publication number
GB2472309A
GB2472309A GB1012543A GB201012543A GB2472309A GB 2472309 A GB2472309 A GB 2472309A GB 1012543 A GB1012543 A GB 1012543A GB 201012543 A GB201012543 A GB 201012543A GB 2472309 A GB2472309 A GB 2472309A
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GB
United Kingdom
Prior art keywords
acoustic
curtain
polymeric
polymeric sheets
sound absorbent
Prior art date
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Granted
Application number
GB1012543A
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GB2472309B (en
GB201012543D0 (en
Inventor
Roger Edward Dupont
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Individual
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Individual
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Publication of GB201012543D0 publication Critical patent/GB201012543D0/en
Publication of GB2472309A publication Critical patent/GB2472309A/en
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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
    • 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
    • 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
    • E04B1/8409—Sound-absorbing elements sheet-shaped
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
    • B32B17/02—Layered products essentially comprising sheet glass, or glass, slag, or like fibres in the form of fibres or filaments
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B19/00—Layered products comprising a layer of natural mineral fibres or particles, e.g. asbestos, mica
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
    • B32B3/26—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer
    • B32B3/266—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer characterised by an apertured layer, the apertures going through the whole thickness of the layer, e.g. expanded metal, perforated layer, slit layer regular cells B32B3/12
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
    • B32B3/26—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer
    • B32B3/28—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer characterised by a layer comprising a deformed thin sheet, i.e. the layer having its entire thickness deformed out of the plane, e.g. corrugated, crumpled
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/22—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed
    • B32B5/24—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer
    • B32B5/28—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer impregnated with or embedded in a plastic substance
    • 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
    • E04B1/8227—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 screens ; Arrangements of sound-absorbing elements, e.g. baffles
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
    • E04G21/24—Safety or protective measures preventing damage to building parts or finishing work during construction
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
    • E04G21/24—Safety or protective measures preventing damage to building parts or finishing work during construction
    • E04G2021/248—Tarpaulins specially adapted therefor

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Electromagnetism (AREA)
  • Multimedia (AREA)
  • Mechanical Engineering (AREA)
  • Curtains And Furnishings For Windows Or Doors (AREA)
  • Building Environments (AREA)

Abstract

An acoustic panel 15 comprises a layer (50) of sound absorbent material within an envelope formed from polymeric sheets (40) such as polyvinyl chloride or silicone rubber, which may be formed as a coating on glass fibre fabric and may be resistant to fire and chemicals. The polymeric sheet (40) intended to face a sound source may be perforated to facilitate entry and absorbance of sound. Means such as hook and loop connectors 18 or metal rings 16 may be provided for securing adjacent panels 15 to one another to form an acoustic curtain. The sound absorbent material preferably comprises solid slabs of acoustic foam or an inorganic fibrous material such as glass fibre or rock wool. The polymeric envelopes (40) may be formed by stitching or welding two sheets together, leaving flaps (43, 45) at one end to facilitate removal of the sound absorbent material.

Description

ACOUSTIC CURTAIN
This invention relates to an acoustic curtain for containing noise, particularly on outdoor sites such as building sites or outdoor musical events.
Construction companies, schools, event organisers and owners of industrial sites are becoming increasingly faced with issues relating to noise pollution, particularly on sensitive sites with surrounding residential development, hospitals or other places of work where stringent noise reduction requirements are imposed by the client or by local authorities. There is therefore a need for acoustic barriers that are easily transportable to a site and can be quickly erected.
The present invention provides an acoustic panel comprising a layer of sound absorbent material within an envelope formed from polymeric sheets, with means for attaching adjacent panels to one another.
In a preferred form, the invention provides an acoustic curtain comprising two or more said panels sealed within adjacent envelopes in a common polymeric sheet and spaced from one another, whereby the curtain can be folded between adjacent panels of the curtain. In one such embodiment the panels are of equal size, in another, one panel is smaller than the other to enable the curtain to be draped over a fence or the like with most of the curtain on one side.
The polymeric sheet may for example comprise polyvinyl chloride (PVC) or silicone rubber. it may be reinforced with a fibrous material such as glass or aramid fibres. In some embodiments a woven fabric, for example of glass or aramid fibres, is coated or impregnated with a polymer, for example PVC, silicone rubber or a fluorocarbon polymer.
It is often necessary for acoustic curtains to have high flame resistance and/chemical resistance. Coated or impregnated glass fibre fabrics may be particularly suitable for this purpose. In some embodiments the envelope is formed from a glass fibre fabric with a flame-retardant silicone rubber coating, preferably on both sides. Woven glass fibre fabric impregnated with a fluorocarbon polymer may be particularly suitable for conferring chemical resistance.
I
The sound absorbent material is preferably a fibrous material, and more especially an inorganic material such as glass fibre or rock wool. Another possibility is acoustic foam, which is lighter in weight and makes the whole curtain flexible, but is more expensive. Each panel of sound absorbent material is retained within an envelope formed by two sheets of flexible polymeric material such as polyvinyl chloride (PVC) or the other materials discussed above. The overall thickness of each sound absorbent panel is preferably in a range from to 60 mm, typically 50 mm.
In some embodiments, the polymeric envelope containing each sound absorbent panel is formed on one side of a solid polymeric material and on the other side a perforated material such as PVC netting. The perforated side is positioned to face the source of noise, allowing the sound waves to penetrate the perforated layer and to be absorbed by the acoustic material. Sound waves penetrating the acoustic material are reflected back into it by the solid sheet behind it. The polymeric sheets can be sealed together by welding. Additionally or alternatively the sheets can be stitched, preferably with an aramid fibre.
To connect adjacent acoustic curtains together, suitable fastening means are provided along edges of adjacent panels, for example strips of hook and loop fastening material such as that sold under the trademark VELCRO�. Suspension eyelets may also be provided in corners and/or along one or more edges of each curtain for securing it on site.
The acoustic material may be sealed between the two polymer sheets or, more preferably, may be located in pockets.
Preferred embodiments of the invention will now be described with reference to the accompanying drawings wherein: Figure 1 is a front perspective view of an acoustic curtain in accordance with the invention; Figure 2 is a rear elevation of the curtain of Figure 1 when hung vertically; Figure 3 is a cross-section on the line 111-111 of Figure 2; Figure 4 is a perspective of an acoustic curtain in accordance with another embodiment of the invention; and Figure 5 is an enlarged detail of the curtain of Figure 4 with a pocket flap open.
Referring first to Figure 1, an acoustic panel generally indicated by 10 comprises a flexible double layer sheet, each of which is preferably made of woven glass fibre, preferably satin weave, coated or impregnated with a flame-retardant polymer such as silicone rubber. Some suitable flame-retardant sheets for this purpose are sold by Alpha Associates, Inc. under the registered trade mark Alpha-Maritex One preferred material is Alpha Maritex 3200-2 SP (SC), and another is Alpha Maritex 426 F1755.
The curtain 10 comprises two acoustic panels 15, each formed by a rectangular slab of acoustic material sandwiched between the front and rear layers 12, 22 of the curtain, these layers being stitched and/or bonded together by welding around and between the two acoustic panels. Stitching is preferably with an aramid fibre such as that sold under the registered trade mark Kevlar.
Down one edge of the front sheet 12 is a strip 18 of hook and loop fastening material, to bond with a corresponding strip 20 on the opposite rear surface 22 of an adjacent panel (see Figure 2).
Metal eyes 16 are provided in the four corners and along two edges of the acoustic curtain, to facilitate tying the curtain in position, for example to scaffolding on a building site.
As can best be seen in Figure 3, the acoustic panels 15 comprise dense slabs, preferably square or rectangular, which fit into pockets between the perforated front sheet and the solid back sheet. The panels are made of an acoustic material or preferably an inorganic material such as rock wool or glass fibres. Other materials such as organic polymer fibres or particles could also be used. These panels should be densely packed and relatively rigid, so that they do not bend significantly, even though the curtain as a whole can bend between the two panels, as shown in Figure 1, so that the panel can for example be placed around a corner, or placed over the top and one side of a site generator.
The flexibility of the backing sheet also enables the curtain to be folded in half for transportation.
The acoustic curtains of the invention may be provided in any suitable shape or size. For example the curtain shown in Figure 4 comprises two vertical lower panels 42 and a horizontal upper one 44. The general construction of the curtain of Figure 4 is otherwise similar to that of Figures 1 to 3. Since however the fold line in this case is about one third of the way along the length of the curtain, stacking for storage and transport can be facilitated by folding the curtains in two and stacking them in alternate orientations. This version of the curtain is designed to hang on a Heras' or similar type fencing used to surround building sites.
The curtain of Figure 4 differs from that of Figures 1 to 3 in that it has a perforated front layer 12, suitably comprising heavy duty PVC netting and a solid back layer 22 (Figure 2) also of PVC.
The curtain of Figure 4 also differs from that of Figures 1 to 3 in that instead of being sealed in between the two sheets the acoustic material is retained in pockets, each closed along one edge by a flap 43, 45, so that worn or damaged acoustic material can be replaced. It will be understood that panels of other materials, such as those described in relation to Figures 1 to 3 may also have this construction.
As can be more easily seen in Figure 5, the acoustic material 50, which may be in the form of an integral slab or sheet, fits into a pocket formed by the perforated front PVC sheet 40, and is retained by a flap 43 by a hook and loop (e.g. VELCRO) connection 44.
Curtains of the invention may suitably be from I.5m to 2.5m in height and from 60cm to I.5m in width. Each acoustic panel may suitably be from 50cm to 120cm in each direction. The areas around and between the acoustic panels may suitably be from 10cm to 15cm in width, and the hook and loop fastening strips are preferably from 6cm to 15cm in width. A 10cm overlap between adjacent curtains ensures a secure join while also providing an efficient continuous sound barrier. In use, the acoustic curtains of the invention may be hung in rows, using the suspension eyelets 60 to secure them to scaffolding, site fencing or the like, and can be secured together with the fastening strip 18 on the front of each curtain being secured to the complementary strip 20 on the back of the adjacent panel, to form a continuous curtain. The curtain is preferably positioned with the solid layer 22 facing outwards and the perforated layer 12 facing the source of noise.
There is thus provided an acoustic curtain that is simple to make from easily available and relatively cheap materials, that can be adapted to numerous different sites, can assume different shapes and can be secured together to form long continuous curtains for highly effective sound absorption.

Claims (20)

  1. CLAIMS: 1. An acoustic panel comprising a layer of sound absorbent material within an envelope formed from polymeric sheets, with means for attaching adjacent panels to one another.
  2. 2. An acoustic curtain according to claim I wherein two or more said acoustic panels are sealed within adjacent envelopes in a common polymeric sheet and spaced from one another, whereby the curtain can be folded between adjacent panels of the curtain.
  3. 3. An acoustic curtain according to claim I or claim 2 wherein the sound absorbent material is a fibrous material.
  4. 4. An acoustic curtain according to claim 3 wherein the sound absorbent material is an inorganic material.
  5. 5. An acoustic curtain according to claim 4 wherein the sound absorbent material comprises glass fibre and/or rock wool.
  6. 6. An acoustic curtain according to claim I or claim 2 wherein the sound absorbent material comprises acoustic foam.
  7. 7. An acoustic sheet according to any preceding claim wherein said polymeric sheets include glass fibres.
  8. 8. An acoustic panel according to any preceding claim wherein said polymeric sheets comprise a woven glass fibre fabric coated with a polymer.
  9. 9. An acoustic curtain according to claim 7 or claim 8 wherein said polymeric sheets comprise a woven glass fibre fabric impregnated with a polymer.
  10. 10. An acoustic panel according to any preceding claim wherein said polymeric sheets comprise a flame-retardant polymer.
  11. 11. An acoustic panel according to claim 10 wherein said flame-retardant polymer is a silicone rubber.
  12. 12. An acoustic panel according to any preceding claim wherein said polymeric sheets comprise a chemical-resistant polymer.
  13. 13. An acoustic panel according to claim 12 wherein said chemical-resistant polymer is fluorocarbon.
  14. 14. An acoustic panel according to any one of claims I to 9 wherein said polymeric sheets comprise polyvinyl chloride.
  15. 15. An acoustic panel according to any preceding claim wherein the polymeric envelope containing each sound absorbent panel is formed on one side from a solid polymeric material and on the other side from a perforated material.
  16. 16. An acoustic material according to any preceding claim wherein the polymeric sheets are sealed together by welding to form said envelopes.
  17. 17. An acoustic curtain according to any preceding claim wherein said polymeric sheets are stitched together to form said envelopes.
  18. 18. An acoustic curtain according to any preceding claim wherein at least one said envelope has an opening flap at one end to allow insertion or removal of acoustic material therefrom.
  19. 19. An acoustic curtain according to any preceding claim wherein said means for attaching panels to one another comprise metal rings in the corners and/or along the edges of said polymeric sheets.
  20. 20. An acoustic panel according to any preceding claim wherein the means for attaching adjacent panels to one another comprises hook and loop connecting strips along respective edges of said polymeric sheets.
GB1012543A 2009-07-27 2010-07-27 Acoustic curtain Active GB2472309B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GBGB0913027.9A GB0913027D0 (en) 2009-07-27 2009-07-27 Acoustic curtain

Publications (3)

Publication Number Publication Date
GB201012543D0 GB201012543D0 (en) 2010-09-08
GB2472309A true GB2472309A (en) 2011-02-02
GB2472309B GB2472309B (en) 2011-08-24

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GBGB0913027.9A Ceased GB0913027D0 (en) 2009-07-27 2009-07-27 Acoustic curtain
GB1012543A Active GB2472309B (en) 2009-07-27 2010-07-27 Acoustic curtain

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GBGB0913027.9A Ceased GB0913027D0 (en) 2009-07-27 2009-07-27 Acoustic curtain

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3255223A1 (en) * 2016-06-09 2017-12-13 Fire Igloo GmbH Folding device for covering a wall opening
EP3354819A1 (en) 2017-01-27 2018-08-01 Rvt Group Limited Acoustic curtain
EP3379006A1 (en) 2017-03-24 2018-09-26 Rvt Group Limited Fireproof acoustic barrier

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4193474A (en) * 1978-04-11 1980-03-18 Toray Industries, Inc. Sound insulating unit and sound barrier
GB2141756A (en) * 1983-03-19 1985-01-03 James Walker Sound deadening means
US4832152A (en) * 1988-03-22 1989-05-23 Herman Miller, Inc. Acoustic tile
US5274200A (en) * 1992-12-22 1993-12-28 Carrier Corporation Sound attenuating enclosure for compressors
EP1408169A1 (en) * 2002-10-07 2004-04-14 General Electric Company An acoustic blanket for machinery

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Publication number Priority date Publication date Assignee Title
IT1302685B1 (en) * 1998-10-16 2000-09-29 Teloni Spandotel Di Spano Dome COMPOSITE SOUND ABSORBING ELEMENT AND PANEL MADE WITH THIS ELEMENT.

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4193474A (en) * 1978-04-11 1980-03-18 Toray Industries, Inc. Sound insulating unit and sound barrier
GB2141756A (en) * 1983-03-19 1985-01-03 James Walker Sound deadening means
US4832152A (en) * 1988-03-22 1989-05-23 Herman Miller, Inc. Acoustic tile
US5274200A (en) * 1992-12-22 1993-12-28 Carrier Corporation Sound attenuating enclosure for compressors
EP1408169A1 (en) * 2002-10-07 2004-04-14 General Electric Company An acoustic blanket for machinery

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
Custom Audio Designs, "Portable Acoustic Curtains/Drapes/Enclosures", 2003-2008, http://www.customaudiodesigns.co.uk/soundproofing/acoustic_curtains_drapes.htm *

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3255223A1 (en) * 2016-06-09 2017-12-13 Fire Igloo GmbH Folding device for covering a wall opening
EP3354819A1 (en) 2017-01-27 2018-08-01 Rvt Group Limited Acoustic curtain
WO2018138248A1 (en) 2017-01-27 2018-08-02 RVT Group Limited Acoustic curtain
US10424286B2 (en) 2017-01-27 2019-09-24 RVT Group Limited Acoustic curtain
GB2573908A (en) * 2017-01-27 2019-11-20 Rvt Group Ltd Acoustic curtain
AU2018212527B2 (en) * 2017-01-27 2021-11-11 RVT Group Limited Acoustic curtain
GB2573908B (en) * 2017-01-27 2022-04-06 Rvt Group Ltd Acoustic curtain
EP3379006A1 (en) 2017-03-24 2018-09-26 Rvt Group Limited Fireproof acoustic barrier
WO2018172455A1 (en) 2017-03-24 2018-09-27 RVT Group Limited Fireproof acoustic barrier
GB2578229A (en) * 2017-03-24 2020-04-22 Rvt Group Ltd Fireproof acoustic barrier
GB2578229B (en) * 2017-03-24 2022-06-08 Rvt Group Ltd Fireproof acoustic barrier

Also Published As

Publication number Publication date
GB0913027D0 (en) 2009-09-02
GB2472309B (en) 2011-08-24
GB201012543D0 (en) 2010-09-08

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