Classifications

• • 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
  • B32B13/00—Layered products comprising a a layer of water-setting substance, e.g. concrete, plaster, asbestos cement, or like builders' material
  • B32B13/04—Layered products comprising a a layer of water-setting substance, e.g. concrete, plaster, asbestos cement, or like builders' material comprising such water setting substance as the main or only constituent of a layer, which is next to another layer of the same or of a different material
• • 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
  • B32B5/30—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 formed of particles, e.g. chips, granules, powder
• • 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
• • 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
  • G10K11/162—Selection of materials
  • G10K11/168—Plural layers of different materials, e.g. sandwiches
• • 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
  • B32B2307/00—Properties of the layers or laminate
  • B32B2307/10—Properties of the layers or laminate having particular acoustical properties
  • B32B2307/102—Insulating
• • 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
  • B32B2607/00—Walls, 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
  • E04B2001/8263—Mounting of acoustical elements on supporting structure, e.g. framework or wall surface
  • E04B2001/8272—Resiliently mounted wall cladding acting as a diaphragmatic sound damper
• • 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
• • 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

Definitions

• the invention is generally directed toward the field of wallboard, and more particularly to the fields of composite wallboard and acoustical wallboard composition, and is also directed toward the field of Acoustical Wall Systems.
• a stud wall 102 is formed of a base plate 104 to which are attached vertical studs 106.
• a header (not depicted) is typically found at the top of the studs 106 in a position opposite to the base plate 104.
• the base plate, studs and header are formed of "2x4" material, made either of wood or steel. Strips of resilient
• (steel) channel 108 are mounted perpendicularly to the studs 106.
• a sheet of drywall 110 is attached to the strips of resilient channel 108.
• Fig. 2 depicts a cross-section of Fig. 1 along the view line II-IF.
• the resilient channel 108 has feet portions 204 and a center section 202. Screws 112 are used to attach the feet portions 204 to the studs 106. Screws 112 are also used to attach the plasterboard
• the resilient channel succeeds in attaching the plasterboard 110 to the studs 106 while decoupling the plasterboard 110 from the studs 106.
• the channel 108 can provide varying levels of decoupling between the plasterboard 110 and the studs 106. This can reduce the amount of vibration transmitted from the plasterboard 110 to the studs 106, and vice-versa.
• resilient channel 108 A disadvantage of the use of resilient channel is that the resilient channel 108 must be attached to the studs 106 before the plasterboard 1 10 is attached to the resilient channel 108. Moreover, the resilient channel 108 must be attached carefully in a periodic manner so that it will be easy to locate the center sections 202 when attaching the plasterboard
• the invention in part, provides an acoustical isolation wall system that can be assembled in one-step rather than in two-steps.
• An advantage of the invention is that it substantially decouples the stud wall from the plasterboard. Decoupled is used here to mean that the wallboard does not physically touch the stud.
• Another advantage of the invention is that is provides tunable low frequency sound absorption via the use of Helmholtz resonators.
• the invention in part, provides a composite wall board comprising: a plasterboard layer; an insulation layer; and a perforated board layer.
• a composite wall board comprising: a plasterboard layer; an insulation layer; and a perforated board layer.
• Such an insulation layer attaches said plasterboard layer to said perforated board layer while decoupling said plasterboard layer from said perforated board layer.
• the invention also provides, in part, a wall system comprising: an existing wall; and a composite wall board attached to said stud wall; said composite wall board including a plasterboard layer; a insulation layer; and a perforated board layer; wherein said insulation layer attaches said plasterboard layer to said perforated board layer while decoupling said plasterboard layer from said perforated board layer.
• the invention also provides, in part, a method of constructing a wall system in a room having at least one subject wall, the method comprising: providing a composite wallboard that includes a plasterboard layer; a insulation layer; and a perforated board layer; and attaching said composite wallboard to said subject wall.
• Fig. 1 is a three-quarter perspective depiction of a background wall system.
• Fig. 2 is a cross-sectional view of Fig. 1 taken along the view line II-IF.
• Fig. 3 is a three-quarter perspective depiction of a first embodiment of the composite wallboard according to the invention.
• Fig. 4 is a three-quarter perspective depiction of an embodiment of a wall system according to the invention that incorporates the embodiment of Fig. 3.
• Fig. 5 is a cross-sectional view of the embodiment of Fig. 4 taken along the view line V-V.
• Fig. 6 is a schematic depiction of a basic Helmholtz resonator.
• Fig. 7 is cross-sectional view of a second embodiment of the composite wallboard according to the invention.
• Fig. 3 is a three-quarter perspective depiction of a first embodiment of a composite wallboard 300 according to the invention.
• the composite wallboard 300 includes a perforated, rigid board 302, insulation material 306 and plasterboard 308.
• Examples of the insulation layer 306 are board fiberglass (approximate density of 3-12 lbs/ft (48.03 - 192.12 kg/m )), open-cell melamine foam (approximate density of 0.7 lbs/ft 3 (11.21 kg/m 3 )) or mineral wool board (approximate density of 3-5 lbs/ft 3 (48.03 - 80.05 kg/m )).
• Commercial examples of the insulation layer 306 include a board formed of compressed fiberglass insulation such as the Type 703 model of semi-rigid glass fiber insulation board sold by Owens Corning and a board formed of open cell melamine foam such as is sold under the brand name of BASOTECT V 3012 Melamine Foam marketed by the BASF Corporation.
• the holes 304 in the perforated board 302 are preferably of varying diameters and are preferably randomly distributed. Alternatively, the holes can be of the same diameter and distributed in a pattern. The sizing and distribution of the holes will be discussed more below.
• the plasterboard 308 is preferably a board made of several plies of fiberboard, paper or felt bonded to a hardened gypsum plaster core. Alternatively, the plasterboard 308 could be replaced with paneling or a cement-based backer board.
• the thickness of the plasterboard 308 is preferably in the range of inch (.635 cm) to 5/8 inch (1.59 cm). The 5/8 inch (1.59 cm) size represents the largest commercially available plasterboard and is preferred because it exhibits the best sound attenuation properties.
• Fig. 4 is a three-quarter perspective depiction of a sound attenuation wall system 400 according to the invention.
• the composite wallboard 300 is attached to a stud wall 102.
• Fig. 5 is a cross-section of the wall system 400 taken along the view line V-V.
• screws 112 are used to attach the perforated board 302 to the studs 106.
• the perforated board 302 is attached to the front surface 310 of the stud wall 102.
• a covering material 504 (Fig. 5) is attached to the back surface 312 of the stud wall 102, a cavity is defined by the studs 106, the base plate 104 and the header plate (not depicted), the covering material 504 and the perforated board 302.
• the holes 304 in the perforated board 302 act to define Helmholtz resonators within the cavities. The diameter of the holes is related to the frequency desired to be absorbed by the Helmholtz resonator. Thus, the diameter of the holes will depend upon the circumstances to which the invention is applied.
• FIG. 6 A cross- sectional view of a basic Helmholtz resonator 600 is illustrated in Figure 6.
• the volume, V, of air in the chamber 602 of the Helmholtz resonator 600 is linked to the environment 612 (containing a sound source) outside the resonator 600 via an aperture 606 in the body 604.
• the aperture 606 has a cross-sectional area, S, and a length, L, indicated via items 608 and 610, respectively, in Figure 6.
• V volume of chamber (m 3 )
• D diameter of hole (m) (assumed circular).
• FIG. 7 An alternative embodiment 700 of the composite wallboard according to the invention is depicted in Fig. 7.
• an insulation layer 702 is sandwiched between the plasterboard layer 308 and the perforated board layer 302.
• the insulation layer 702 has a non-uniform distribution.
• the portions 704 completely fill the distance 706 between the perforated board 302 and the plasterboard 308. The portions
• the insulation layer 702 would appear to be a stripped pattern and/or a checker board pattern.
• the composite wallboard according to the invention is preferably installed by screwing (or nailing) through the plasterboard 308 and into the perforated board 302 such that the screws (or nails) only contact the perforated board 302.
• the screw/nail holes, as well as the seams between the composite wallboards, are then finished in the typical manner associated with plasterboard.
• the perforated board 302 could simply be glued to the studs 106.
• An advantage of the composite wallboard according to the invention is that no nail pops can occur in the plasterboard 308.
• the plasterboard 308 could be attached to the studs 106, resulting in the perforated board 302 facing into the room. This would cause the composite wallboard to act as a mid-range and high frequency sound absorbing surface. To make this surface more attractive, it could be covered with an acoustically transparent fabric such as that used in the Acoustic Room System marketed by Owens Corning.
• the insulation layer 702 could be replaced by a known honeycomb material (not depicted), such as in any one of U.S. Patent Nos. 4,496,024; 4,522,284; and 4,084,367. It is also commercially available from the Tenneco Packaging company.
• the honeycomb material is typically made of paper and optionally can be impregnated with resin, and is available in a variety of sizes and paper weights. Such a honeycomb material would enhance the sound attenuation effect of the Helmholtz resonators, but would not decouple as well as the insulation layer 702.

Landscapes

• Physics & Mathematics (AREA)
• Engineering & Computer Science (AREA)
• Acoustics & Sound (AREA)
• Structural Engineering (AREA)
• Architecture (AREA)
• Multimedia (AREA)
• Electromagnetism (AREA)
• Civil Engineering (AREA)
• Building Environments (AREA)

Applications Claiming Priority (3)

Publications (1)

Family

ID=23793156

Family Applications (1)

Country Status (4)

Families Citing this family (8)

Family Cites Families (13)

• 2000
  • 2000-11-29 EP EP00982270A patent/EP1252012A1/de not_active Withdrawn
  • 2000-11-29 CA CA002391601A patent/CA2391601A1/en not_active Abandoned
  • 2000-11-29 WO PCT/US2000/032481 patent/WO2001039969A1/en not_active Application Discontinuation
  • 2000-11-29 AU AU19324/01A patent/AU1932401A/en not_active Abandoned

Non-Patent Citations (1)

Also Published As

Similar Documents

Legal Events