EP0846812A1 - Sound absorbent panel - Google Patents

Sound absorbent panel Download PDF

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Publication number
EP0846812A1
EP0846812A1 EP97120323A EP97120323A EP0846812A1 EP 0846812 A1 EP0846812 A1 EP 0846812A1 EP 97120323 A EP97120323 A EP 97120323A EP 97120323 A EP97120323 A EP 97120323A EP 0846812 A1 EP0846812 A1 EP 0846812A1
Authority
EP
European Patent Office
Prior art keywords
wood
sheet
sound absorbent
layer
panel
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Withdrawn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
EP97120323A
Other languages
German (de)
French (fr)
Inventor
Giovanni Locatelli
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.)
Locatelli Laminati Sas Di Locatelli Uberto & C
Original Assignee
Locatelli Laminati Sas Di Locatelli Uberto & C
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 Locatelli Laminati Sas Di Locatelli Uberto & C filed Critical Locatelli Laminati Sas Di Locatelli Uberto & C
Publication of EP0846812A1 publication Critical patent/EP0846812A1/en
Withdrawn legal-status Critical Current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
    • E04B9/00—Ceilings; Construction of ceilings, e.g. false ceilings; Ceiling construction with regard to insulation
    • E04B9/04—Ceilings; Construction of ceilings, e.g. false ceilings; Ceiling construction with regard to insulation comprising slabs, panels, sheets or the like
    • E04B9/045—Ceilings; Construction of ceilings, e.g. false ceilings; Ceiling construction with regard to insulation comprising slabs, panels, sheets or the like being laminated
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/62—Insulation or other protection; Elements or use of specified material therefor
    • E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
    • E04B1/82—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to sound only
    • E04B1/84—Sound-absorbing elements
    • E04B1/86—Sound-absorbing elements slab-shaped
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B9/00—Ceilings; Construction of ceilings, e.g. false ceilings; Ceiling construction with regard to insulation
    • E04B9/001—Ceilings; Construction of ceilings, e.g. false ceilings; Ceiling construction with regard to insulation characterised by provisions for heat or sound insulation
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B9/00—Ceilings; Construction of ceilings, e.g. false ceilings; Ceiling construction with regard to insulation
    • E04B9/04—Ceilings; Construction of ceilings, e.g. false ceilings; Ceiling construction with regard to insulation comprising slabs, panels, sheets or the like
    • E04B9/0464—Ceilings; Construction of ceilings, e.g. false ceilings; Ceiling construction with regard to insulation comprising slabs, panels, sheets or the like having irregularities on the faces, e.g. holes, grooves
    • 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

Definitions

  • the invention relates to the field of furnishing panels.
  • Known and already used are furnishing panels with through holes consisting of a high or medium density central layer of wood fibre or wood pulp or the like and a veneer on the two larger surfaces.
  • One type of such panels is marketed by Locatelli Laminati SaS di Locatelli Uberto & C. These panels have a thickness of 6 mm or less. They are generally used for decorative purposes, for cupboard doors, room dividers and generally where it is wished to allow a certain passage of light and air and a partial vision.
  • An object in the building field is to obtain increasingly good sound absorbing effects with a relatively small bulk and low weight.
  • the invention solves the problem posed above and provides excellent sound absorption with a little thickness and a good aesthetic appearance.
  • the new panel comprises a core layer of compressed wood material coated on each side with wood veneer, this layer having through holes, and a layer of sound absorbent material, comprising a sheet of non-woven fabric, glued to a veneered surface.
  • the through holes can be square, rectangular or round in shape, preferably with a void to solid ratio of not less than 15%.
  • the invention achieves the above mentioned objects.
  • the panel of the invention is indicated as a whole with reference numeral 10. It comprises a layer 12 of wood or wood type material and a layer 14 of sound absorbent material.
  • the layer of wood material 12 comprises a core 16 of sound compact wood fibre or the like, that is to say, with a density from 500 to 1100 kg/m3 and two sheets of veneer on the larger surfaces, indicated respectively with 18 and 20.
  • the layer 12 of wood material has an arrangement of through holes 22, in this case a regular arrangement of square holes with a void/solid ratio of about 25%. Obviously the shape of the holes can be different, for example round, polygonal, etc.
  • the holes in the layer 12 are covered or closed, on one side of the wood layer, by the sheet of sound absorbent material 14.
  • the layer of wood is preferably 0.5 to 1 mm thick.
  • the sound absorbent material 14 can be a commercially available sheet material, for example a non-woven fabric in polyester, and/or cellulose, and/or polypropylene, etc.
  • a further sheet or plate 24 of sound absorbent material (Figure 3) can be applied to the panel to improve its performance.
  • the sheet 14 and the sheet 24 can be applied in any known manner, for example by gluing.
  • the sound absorbent panel thus created has particularly high levels of sound absorption, superior to that which might logically be expected from a combination of the two basic elements (panel with holes and sheet) and superior to those that can be obtained with known panels of the same thickness.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Acoustics & Sound (AREA)
  • Building Environments (AREA)
  • Vehicle Interior And Exterior Ornaments, Soundproofing, And Insulation (AREA)
  • Devices Affording Protection Of Roads Or Walls For Sound Insulation (AREA)

Abstract

A sound absorbent panel (10) consists of a sheet (12) of wood-based material comprising a core of compressed material (10) and balanced veneers (18,20) on two sides, and at least one sheet (14) of non-woven fabric made of sound absorbent material glued to one side. An improved sound absorbent effect superior to the effect that can be obtained with the two separate elements is achieved.

Description

The invention relates to the field of furnishing panels. Known and already used are furnishing panels with through holes consisting of a high or medium density central layer of wood fibre or wood pulp or the like and a veneer on the two larger surfaces. One type of such panels is marketed by Locatelli Laminati SaS di Locatelli Uberto & C. These panels have a thickness of 6 mm or less. They are generally used for decorative purposes, for cupboard doors, room dividers and generally where it is wished to allow a certain passage of light and air and a partial vision.
Also known are sound absorbent materials in sheets, for example non-woven fabrics, foams and the like, whose sound absorbing power, however, is significant above 20 mm.
An object in the building field is to obtain increasingly good sound absorbing effects with a relatively small bulk and low weight.
The invention, as defined in claim 1, solves the problem posed above and provides excellent sound absorption with a little thickness and a good aesthetic appearance.
The new panel comprises a core layer of compressed wood material coated on each side with wood veneer, this layer having through holes, and a layer of sound absorbent material, comprising a sheet of non-woven fabric, glued to a veneered surface. The through holes can be square, rectangular or round in shape, preferably with a void to solid ratio of not less than 15%.
The invention achieves the above mentioned objects.
Examplary embodiments of the invention will be given below with reference to the appended drawings in which they are illustrated and in which.
  • Figure 1 is a perspective part broken-away view of a sound absorbent panel according to the invention;
  • Figure 2 is a sectional view taken along a plane indicated by 2-2 in Figure 1 and enlarged with respect to said figure;
  • Figure 3 is a sectional view, similar to Figure 2, of a modified embodiment of the panel.
    • The panel of the invention is indicated as a whole with reference numeral 10. It comprises a layer 12 of wood or wood type material and a layer 14 of sound absorbent material. The layer of wood material 12 comprises a core 16 of sound compact wood fibre or the like, that is to say, with a density from 500 to 1100 kg/m3 and two sheets of veneer on the larger surfaces, indicated respectively with 18 and 20. The layer 12 of wood material has an arrangement of through holes 22, in this case a regular arrangement of square holes with a void/solid ratio of about 25%. Obviously the shape of the holes can be different, for example round, polygonal, etc. The holes in the layer 12 are covered or closed, on one side of the wood layer, by the sheet of sound absorbent material 14.
    The layer of wood is preferably 0.5 to 1 mm thick.
    The sound absorbent material 14 can be a commercially available sheet material, for example a non-woven fabric in polyester, and/or cellulose, and/or polypropylene, etc. In addition to the sheet 14, a further sheet or plate 24 of sound absorbent material (Figure 3) can be applied to the panel to improve its performance. The sheet 14 and the sheet 24 can be applied in any known manner, for example by gluing.
    It has been found that the sound absorbent panel thus created has particularly high levels of sound absorption, superior to that which might logically be expected from a combination of the two basic elements (panel with holes and sheet) and superior to those that can be obtained with known panels of the same thickness.

    Claims (4)

    1. A sound-absorbent panel characterized in that it comprises a layer (12) of wood material with through holes (22) and a sheet of sound absorbent material (14) made integral with each other by gluing.
    2. A panel according to claim 1 characterized in that the sheet of wood material comprises a compact core (16) of wood fibre or the like, veneered on two sides with sheets of wood (18, 20) and has through holes closed on one side by the sheet of sound absorbent material.
    3. A panel according to claim 1, characterized in that it further comprises a layer of foam material (24) applied to the sound absorbent sheet (14).
    4. A panel according to claim 1, characterized in that the void/solid ratio in the wood layer of the panel is not less than 15 %.
    EP97120323A 1996-12-06 1997-11-20 Sound absorbent panel Withdrawn EP0846812A1 (en)

    Applications Claiming Priority (2)

    Application Number Priority Date Filing Date Title
    IT96MI000802 IT241053Y1 (en) 1996-12-06 1996-12-06 SOUND ABSORBING PANEL
    ITMI960802U 1996-12-06

    Publications (1)

    Publication Number Publication Date
    EP0846812A1 true EP0846812A1 (en) 1998-06-10

    Family

    ID=11374095

    Family Applications (1)

    Application Number Title Priority Date Filing Date
    EP97120323A Withdrawn EP0846812A1 (en) 1996-12-06 1997-11-20 Sound absorbent panel

    Country Status (2)

    Country Link
    EP (1) EP0846812A1 (en)
    IT (1) IT241053Y1 (en)

    Cited By (7)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    EP0992636A3 (en) * 1998-10-06 2001-06-06 Lignoform Benken AG Sound insulating panel for interior decoration
    WO2006080731A1 (en) * 2004-10-20 2006-08-03 Chun-Won Kang A method for improving wood sound-absorbance and a sound-absorbing wood thereby
    WO2010090388A2 (en) * 2009-02-05 2010-08-12 대보하우징 주식회사 Sound-absorbing panel
    CN101571002B (en) * 2008-04-28 2012-07-04 Ls电线有限公司 Buffering material and acoustic panel with the same
    CN111305406A (en) * 2020-03-05 2020-06-19 河南科技大学 Windproof sound insulation board
    US20230160204A1 (en) * 2018-05-15 2023-05-25 Louisiana-Pacific Corporation Method of manufacturing osb with extruded polymer bands
    EP4219852A4 (en) * 2020-09-25 2024-04-03 Mitsubishi Chemical Corporation Sound-insulating structural body

    Citations (5)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    US2556884A (en) * 1947-01-14 1951-06-12 Muller Barringer Sound-absorbing surface covering material
    FR1009074A (en) * 1950-01-24 1952-05-26 Gestion Commerciale So Ge Co S Insulating panel
    GB1241579A (en) * 1968-08-28 1971-08-04 Price Brothers & Co Ltd Improvements in or relating to sound absorbing slabs
    US5536556A (en) * 1991-02-20 1996-07-16 Indian Head Industries, Inc. Insulating laminate
    FR2732381A1 (en) * 1995-03-29 1996-10-04 Biguet Guy Airborne sound reducing panel

    Patent Citations (5)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    US2556884A (en) * 1947-01-14 1951-06-12 Muller Barringer Sound-absorbing surface covering material
    FR1009074A (en) * 1950-01-24 1952-05-26 Gestion Commerciale So Ge Co S Insulating panel
    GB1241579A (en) * 1968-08-28 1971-08-04 Price Brothers & Co Ltd Improvements in or relating to sound absorbing slabs
    US5536556A (en) * 1991-02-20 1996-07-16 Indian Head Industries, Inc. Insulating laminate
    FR2732381A1 (en) * 1995-03-29 1996-10-04 Biguet Guy Airborne sound reducing panel

    Cited By (8)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    EP0992636A3 (en) * 1998-10-06 2001-06-06 Lignoform Benken AG Sound insulating panel for interior decoration
    WO2006080731A1 (en) * 2004-10-20 2006-08-03 Chun-Won Kang A method for improving wood sound-absorbance and a sound-absorbing wood thereby
    CN101571002B (en) * 2008-04-28 2012-07-04 Ls电线有限公司 Buffering material and acoustic panel with the same
    WO2010090388A2 (en) * 2009-02-05 2010-08-12 대보하우징 주식회사 Sound-absorbing panel
    WO2010090388A3 (en) * 2009-02-05 2010-09-23 대보하우징 주식회사 Sound-absorbing panel
    US20230160204A1 (en) * 2018-05-15 2023-05-25 Louisiana-Pacific Corporation Method of manufacturing osb with extruded polymer bands
    CN111305406A (en) * 2020-03-05 2020-06-19 河南科技大学 Windproof sound insulation board
    EP4219852A4 (en) * 2020-09-25 2024-04-03 Mitsubishi Chemical Corporation Sound-insulating structural body

    Also Published As

    Publication number Publication date
    ITMI960802V0 (en) 1996-12-06
    ITMI960802U1 (en) 1998-06-06
    IT241053Y1 (en) 2001-04-20

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