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EP2743418A1 - Schalldämmungsstrukturen - Google Patents

Schalldämmungsstrukturen Download PDF

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Publication number
EP2743418A1
EP2743418A1 EP13197033.7A EP13197033A EP2743418A1 EP 2743418 A1 EP2743418 A1 EP 2743418A1 EP 13197033 A EP13197033 A EP 13197033A EP 2743418 A1 EP2743418 A1 EP 2743418A1
Authority
EP
European Patent Office
Prior art keywords
sound
membrane
sound insulator
flat face
curved surface
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Withdrawn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
EP13197033.7A
Other languages
English (en)
French (fr)
Inventor
David Bignell
Iain MAIR
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.)
Isomass Ltd
Original Assignee
Isomass Ltd
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 Isomass Ltd filed Critical Isomass Ltd
Publication of EP2743418A1 publication Critical patent/EP2743418A1/de
Withdrawn legal-status Critical Current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
    • 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
    • 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
    • E04B1/76—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 heat only
    • E04B1/7654—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 heat only comprising an insulating layer, disposed between two longitudinal supporting elements, e.g. to insulate ceilings

Definitions

  • This invention relates to the provision of sound proofing separating floors, between commercial properties and/or dwellings or simply between two dwellings. These dwellings are commonly multiple occupancy such as a block of flats, hotels or hospitals.
  • the invention is intended to be used primarily, although not exclusively to enhance the sound insulation of timber or steel frame structures within buildings such as timber/steel Seasted floors, walls and ceilings.
  • acoustic damping systems for floors which commonly comprise a particle board composite panel (such as chipboard or MDF) that performs by being suspended or floated above the structural subfloor with the use of a foam or textile resilient layer. Latterly these systems are now often accompanied by additional suspended ceiling boards because in many cases the particle board composite floor covering or suspended ceiling is not good enough to achieve the specified acoustic performance.
  • particle board composite panel such as chipboard or MDF
  • the introduction of soft absorbent material within the structural floor void may be beneficial because it stops an unwanted echo in the floor void and can improve the floor's overall performance by up to 1dB.
  • JP2000038780 (A ), Sekisui Chemical Co Ltd, describes a rectangular sound absorbing block for installation between a floor and an underlying ceiling. A face and side surfaces of the block are covered by a high density sheet material and the assembly is secured to the floor joists or ceiling supports so as to leave clearance between the block and the respective floor and ceiling surfaces by lugs co-planar with a face of the block and projecting from the sheet material.
  • This invention is directed primarily to reduction of airborne noise.
  • the invention facilitates the ability to improve the sound insulation of a separating structural floor more than that of the soft insulation currently used.
  • a further feature is that it will increase the overall performance of the floor sufficiently so as to only require one additional acoustic system to be added to one side of the structural floor, in order to achieve a commonly specified acoustic performance.
  • a feature of the invention is that it can enable improvement of the acoustic performance of a floor while being installed from one side only of the floor structure.
  • the weight is supported by the floor joists and not the ceiling or the floorboards.
  • a sound insulator comprising a sound-absorbent core within a flexible membrane characterised in that part of the external surface of the resultant composite structure is curved around a longitudinal axis.
  • a method of reducing transmission of airborne sound through a planar frame structure which method comprises:
  • a preformed, flexible membrane to contain a sound-absorbent core and so shaped that, in use, part of the external surface of the resultant composite structure is curved around a longitudinal axis and includes: i) a generally flat face extending in a longitudinal direction and opposed to the curved surface; and ii) a pair of substantially parallel and planar flanges each of which extends beyond the flat face from a corresponding edge of a curved surface of the membrane in a plane substantially perpendicular to the flat face.
  • a particularly effective configuration includes a generally flat face extending in a longitudinal direction and opposed to the curved surface.
  • the curved surface should be continuous, for example cylindrical, without discontinuities or sharp cusps.
  • the composite structure preferably includes a pair of substantially parallel and planar flanges each of which extends beyond the flat face from a corresponding edge of a curved surface of the membrane in a plane substantially perpendicular to the flat face.
  • a preferred configuration of the curved surface comprises a partial cylinder and particularly a hemi-cylinder.
  • This invention preferably utilises a polymer or fibrous material for the core, such as a resilient polymer foam.
  • a polymer or fibrous material for the core such as a resilient polymer foam.
  • Preferably but not exclusively at least the bulk of the core is an open cell foam structure.
  • the membrane may be a natural or synthetic rubber or a high density polymer, such as polyvinyl chloride (PVC).
  • the density of the absorbent core should not exceed 400kg.m -3 and is preferably in the range from about 30kg.m -3 to 200kg.m -3 .
  • the absorbent material core is either cut from a block or extruded or moulded to form the desired shape.
  • the absorbent core may be a resilient polymer such as reconstituted / virgin open cell foam of varying densities from about 64kg.m -3 to 200kg.m -3 or a compressed mineral wool of varying densities from about 30kg.m- 3 to 120kg.m -3 .
  • the thickness of the high density membrane ranges from about 2mm to 6mm and the corresponding weight from about 4kg to 16kg per square metre.
  • the two components are bonded together.
  • the absorbent core can be a granular material such as crumbed foam, which fills the shaped membrane after it is secured in position.
  • the partial curve can enable an appropriate acoustic performance without imposing an excessive load on the ceiling.
  • the membrane is the major proportion, say at least 70%, of the mass of the composite structure.
  • the absorbent core can be altered in height and depth according to the spacing between the supporting members to which it is fixed.
  • the sound insulator has a generally longitudinal axis and at least part of the edge of the core in section transverse to the longitudinal axis comprises a curve.
  • a sound insulator preferably includes a generally flat face extending in a longitudinal direction and opposed to the curved surface.
  • the sound insulator may be adapted to be located alongside a longitudinal support and particularly but without limitation between floor joists.
  • the sound insulator is adapted to be secured to at least one support and, in particular, between adjacent floor joists. It may be so supported or secured by means of an extended carrier or flap on each side through which mechanical fixings can be driven, such as by including at least one flange adapted to abut a support.
  • a particularly preferred configuration includes: (i) a generally flat face extending in a longitudinal direction and opposed to the curved surface; and (ii) a pair of substantially parallel and planar faces forming flanges, each of which extends beyond the flat face from a corresponding edge of a curved surface of the membrane in a plane substantially perpendicular to the flat face.
  • the sound insulator is generally cup- or trough-shaped in transverse section.
  • the curved portion is a partial cylinder and especially a hemi-cylinder.
  • the flanges abut longitudinal supports, such as wall studs or floor joists, in the structure being insulated and may readily be secured to such supports in any convenient manner.
  • the flexibility of the flanges may be sufficient to compensate for variations in spacing between adjacent supports.
  • the sound insulator may comprise a plurality of interconnecting modules.
  • Each module may be shaped specifically so as to allow the foam to slot into the next unit (see Fig. 4 ) to form a continuous structure.
  • each module may include at least one portion of foam projecting beyond the flexible membrane and adapted to engage in a recess in a second adjoining module.
  • the invention improves acoustic insulation by absorbing and deflecting airborne sound energy in many different directions.
  • the acoustic insulation is created from the combination of reflective scattering of the sound energy from the flexible high mass membrane layer, and absorption from the shaped core fillet on one side of the membrane.
  • the carrier membrane may also absorb some sound energy through its flexibility.
  • the invention may be applied to reduce sound transmission through any planar structure, such as a floor, wall or ceiling. It is particularly useful between pairs of adjoining panels such as: a cavity wall; wall panels on opposing sides of studs or a frame; a floor and the underlying ceiling; or the underside of a floor and a suspended ceiling.
  • the sound insulation can be manufactured in specific sizes to cater for different floor construction ranges (for example the joists could be 200mm deep and 450mm apart or upto 300 mm deep and upto 600mm apart), by altering the physical thickness/weight and shape of the membrane, always being sure to limit the contact with the structural elements of the floor.
  • the absorption of airborne noise is a function of the mass of the intervening material and, indeed, building regulations often prescribe a minimum mass per unit area.
  • the curved surface enables a greater quantity of material and therefore greater mass to be located in the same spacing between longitudinal supports. For example, 600 mm of carrier membrane and the enclosed absorbent core can be suspended between floor joists on a 400 mm spacing.
  • a sound insulator module comprises a sound-absorbent foam infill 1, commonly reconstituted or virgin open cell foam or mineral wool, such as reconstituted polyurethane foam.
  • Foam infill 1 is constrained into a hemi-cylinder by an outer membrane 2 of PVC or natural or synthetic rubber or similar polymeric materials bonded to the foam infill 1.
  • a flat face of the composite structure is indicated at 8.
  • Width around the curved face of the carrier membrane - normally upto 750mm but, depending on the spacing between floor joists, can be as much as 900mm.
  • Figures 1 and 2 show the sound insulator module located between floor joists 3, below floor boards 4 and above ceiling 5.
  • Figure 3 shows two adjoining modules of the sound insulator being positioned between floor joists 3, with the hashed lines indicating the final position of the sound insulator modules.
  • outer membrane 2 extend beyond the flat surface 8 of the hemi-cylindrical foam infill 1 to form a pair of longitudinal flanges 6 which may be secured to the floor joists 3 by conventional fixings 7 such as screws or bolts.
  • Figure 4 shows two complementary sound insulator modules A and B.
  • module A an offset portion 1a of the foam infill extends longitudinally beyond the membrane 2.
  • module B a portion 2a of the membrane extends longitudinally beyond the end of the foam infill 1.
  • offset portion 1a of the foam infill of module A abuts the adjoining end of foam infill 1 of module B and slots into a corresponding recess formed by portion 2a of the membrane of module B.

Landscapes

  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Electromagnetism (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Floor Finish (AREA)
  • Building Environments (AREA)
EP13197033.7A 2012-12-13 2013-12-12 Schalldämmungsstrukturen Withdrawn EP2743418A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1222520.7A GB2508878A (en) 2012-12-13 2012-12-13 Sound insulating device for location between joists of a floor or ceiling

Publications (1)

Publication Number Publication Date
EP2743418A1 true EP2743418A1 (de) 2014-06-18

Family

ID=47630696

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13197033.7A Withdrawn EP2743418A1 (de) 2012-12-13 2013-12-12 Schalldämmungsstrukturen

Country Status (2)

Country Link
EP (1) EP2743418A1 (de)
GB (1) GB2508878A (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112012361A (zh) * 2020-08-11 2020-12-01 千年舟新材科技集团有限公司 一种吸音板
WO2023111558A1 (en) * 2021-12-17 2023-06-22 Thornton Tomasetti Limited Floor structure

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN118639785B (zh) * 2024-08-15 2024-11-12 熊安(浙江)科技有限公司 一种隔音龙骨、隔音墙及其安装方法

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1874659A (en) * 1929-08-29 1932-08-30 Upson Co Insulating material for building and similar purposes
NL7404038A (de) * 1973-03-29 1974-10-01
WO1996018005A1 (en) * 1994-12-07 1996-06-13 Matthias Francis Smith Acoustic insulation system

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3729879A (en) * 1971-08-09 1973-05-01 A Franklin Stick on insulators
DE2329372A1 (de) * 1973-06-08 1975-01-02 Thermodach Dachtechnik Gmbh Waermedaemmende innenverkleidung fuer dachziegelflaechen
JP2000038780A (ja) * 1998-07-22 2000-02-08 Sekisui Chem Co Ltd 建物の遮音構造
JP2002242351A (ja) * 2001-02-22 2002-08-28 Sekisui Chem Co Ltd 建物の上階床構造
GB0801981D0 (en) * 2008-02-04 2008-03-12 Insulation apparatus and mehtod

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1874659A (en) * 1929-08-29 1932-08-30 Upson Co Insulating material for building and similar purposes
NL7404038A (de) * 1973-03-29 1974-10-01
WO1996018005A1 (en) * 1994-12-07 1996-06-13 Matthias Francis Smith Acoustic insulation system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112012361A (zh) * 2020-08-11 2020-12-01 千年舟新材科技集团有限公司 一种吸音板
WO2023111558A1 (en) * 2021-12-17 2023-06-22 Thornton Tomasetti Limited Floor structure

Also Published As

Publication number Publication date
GB2508878A (en) 2014-06-18
GB201222520D0 (en) 2013-01-30

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