WO2004028796A2 - A sound-absorbing and soundproofing panel - Google Patents
A sound-absorbing and soundproofing panel Download PDFInfo
- Publication number
- WO2004028796A2 WO2004028796A2 PCT/EP2003/010612 EP0310612W WO2004028796A2 WO 2004028796 A2 WO2004028796 A2 WO 2004028796A2 EP 0310612 W EP0310612 W EP 0310612W WO 2004028796 A2 WO2004028796 A2 WO 2004028796A2
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- WIPO (PCT)
- Prior art keywords
- panel
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- falling
- layer
- compound
- Prior art date
Links
- 239000000463 material Substances 0.000 claims abstract description 24
- 239000004753 textile Substances 0.000 claims abstract description 9
- -1 polyethylene Polymers 0.000 claims abstract description 7
- 239000000835 fiber Substances 0.000 claims abstract description 5
- 239000006260 foam Substances 0.000 claims abstract description 5
- 239000004698 Polyethylene Substances 0.000 claims abstract description 3
- 229920000573 polyethylene Polymers 0.000 claims abstract description 3
- 150000001875 compounds Chemical class 0.000 claims description 8
- GOOHAUXETOMSMM-UHFFFAOYSA-N Propylene oxide Chemical class CC1CO1 GOOHAUXETOMSMM-UHFFFAOYSA-N 0.000 claims description 7
- 229920005830 Polyurethane Foam Polymers 0.000 claims description 6
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 6
- 239000011496 polyurethane foam Substances 0.000 claims description 6
- 239000012948 isocyanate Substances 0.000 claims description 5
- IAYPIBMASNFSPL-UHFFFAOYSA-N Ethylene oxide Chemical class C1CO1 IAYPIBMASNFSPL-UHFFFAOYSA-N 0.000 claims description 4
- 239000002245 particle Substances 0.000 claims description 4
- 239000011152 fibreglass Substances 0.000 claims description 3
- 239000000945 filler Substances 0.000 claims description 3
- 229920003023 plastic Polymers 0.000 claims description 3
- 239000004033 plastic Substances 0.000 claims description 3
- 239000000377 silicon dioxide Substances 0.000 claims description 3
- 229940126062 Compound A Drugs 0.000 claims description 2
- NLDMNSXOCDLTTB-UHFFFAOYSA-N Heterophylliin A Natural products O1C2COC(=O)C3=CC(O)=C(O)C(O)=C3C3=C(O)C(O)=C(O)C=C3C(=O)OC2C(OC(=O)C=2C=C(O)C(O)=C(O)C=2)C(O)C1OC(=O)C1=CC(O)=C(O)C(O)=C1 NLDMNSXOCDLTTB-UHFFFAOYSA-N 0.000 claims description 2
- 229920000538 Poly[(phenyl isocyanate)-co-formaldehyde] Polymers 0.000 claims description 2
- 238000010420 art technique Methods 0.000 claims description 2
- 125000002887 hydroxy group Chemical group [H]O* 0.000 claims description 2
- LVTJOONKWUXEFR-FZRMHRINSA-N protoneodioscin Natural products O(C[C@@H](CC[C@]1(O)[C@H](C)[C@@H]2[C@]3(C)[C@H]([C@H]4[C@@H]([C@]5(C)C(=CC4)C[C@@H](O[C@@H]4[C@H](O[C@H]6[C@@H](O)[C@@H](O)[C@@H](O)[C@H](C)O6)[C@@H](O)[C@H](O[C@H]6[C@@H](O)[C@@H](O)[C@@H](O)[C@H](C)O6)[C@H](CO)O4)CC5)CC3)C[C@@H]2O1)C)[C@H]1[C@H](O)[C@H](O)[C@H](O)[C@@H](CO)O1 LVTJOONKWUXEFR-FZRMHRINSA-N 0.000 claims description 2
- DVKJHBMWWAPEIU-UHFFFAOYSA-N toluene 2,4-diisocyanate Chemical compound CC1=CC=C(N=C=O)C=C1N=C=O DVKJHBMWWAPEIU-UHFFFAOYSA-N 0.000 claims description 2
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 claims 3
- 239000005977 Ethylene Substances 0.000 claims 3
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims 2
- 229910000019 calcium carbonate Inorganic materials 0.000 claims 1
- 239000002984 plastic foam Substances 0.000 abstract description 4
- 238000010521 absorption reaction Methods 0.000 description 4
- 239000000203 mixture Substances 0.000 description 3
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 2
- 239000010426 asphalt Substances 0.000 description 2
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 description 2
- 150000004649 carbonic acid derivatives Chemical class 0.000 description 2
- 230000003750 conditioning effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 150000004760 silicates Chemical class 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 1
- 239000004721 Polyphenylene oxide Substances 0.000 description 1
- 239000004793 Polystyrene Substances 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 1
- 239000002801 charged material Substances 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- 125000004435 hydrogen atom Chemical group [H]* 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000002985 plastic film Substances 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920000570 polyether Polymers 0.000 description 1
- 229920001228 polyisocyanate Polymers 0.000 description 1
- 239000005056 polyisocyanate Substances 0.000 description 1
- 229920005862 polyol Polymers 0.000 description 1
- 229920000098 polyolefin Polymers 0.000 description 1
- 150000003077 polyols Chemical class 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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
- E04B1/86—Sound-absorbing elements slab-shaped
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R13/00—Elements for body-finishing, identifying, or decorating; Arrangements or adaptations for advertising purposes
- B60R13/08—Insulating elements, e.g. for sound insulation
-
- 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
- E04B2001/742—Use of special materials; Materials having special structures or shape
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/249921—Web or sheet containing structurally defined element or component
- Y10T428/249953—Composite having voids in a component [e.g., porous, cellular, etc.]
- Y10T428/249981—Plural void-containing components
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/249921—Web or sheet containing structurally defined element or component
- Y10T428/249953—Composite having voids in a component [e.g., porous, cellular, etc.]
- Y10T428/249986—Void-containing component contains also a solid fiber or solid particle
Definitions
- This invention relates to a sound-absorbing and soundproofing panel. More particularly, it relates to a panel consisting of a first plastic foam layer coupled or not with a second layer of a different material; the panel has high sound-absorbing power, low impact strength, and good mechanical properties in general and is light, deformable, and able to springback slowly to its original shape after the deforming action has ceased.
- Background Art In the area of sound-absorbing and/or soundproofing materials, several materials are known for some time now to filter and deaden sounds, utilised in specific ways depending on the particular field of application.
- examples of items used for sound conditioning include panels made of different fibres and/or plastic foam in combination with one layer of bitumen sheeting.
- the above materials have several drawbacks, such as excessive weight (for example, in the case of panels with sheet lead), voluminous size, high cost, or low mechanical strength (for example, the panels with a layer of bitumen sheeting which performance worsens over time and following exposure to low temperatures and/or temperature changes; furthermore, the panels can easily become dry, crack under the effect of the vibrations, and become detached from their support).
- Attempts put forward to improve the performance of said materials have not always produced the hoped for results. This is particularly true when limited dimensions and high absorptive power are required: the use of thin materials must be compensated for with high-density matter, increasing the weight, otherwise lower sound-insulating performance or limited mechanical properties must be accepted.
- US patent US-5010113 refers to a flame-retardant and soundproofing polyurethane material obtained by mixing and reacting together an amino-salt of phosphoric acid, a compound containing at least two reactive hydrogens, and a compound containing at least two isocyanate radicals.
- the German patent application n. 1991 41229666 describes a sound-insulating viscoelastic foam, having an adhesive surface, obtained by making stoichiometric amounts of a polyisocyanate react with at least two polyols of the polyether type, which are incompatible with each other.
- Patent no. EP0884349 describes a soundproofing material consisting of a cross- linked resin - chosen from the group comprising polyolefin, polystyrene, and polychlorovinyls - and an inert filler, preferably barium sulphate (referred to in the examples).
- the panel in accordance with present invention comprises a first layer, consisting of a viscoelastic plastic foam containing an inertly charged material that is uniformly dispersed, coupled with a second layer consisting of a material chosen from the group of textile fibre mat, 100% PES, and polyethylene foam.
- the textile fibre mat is of known type and essentially consists of spun yarn waste of different types.
- Said first layer of the panel preferably consists of a viscoelastic polyurethane foam made in compliance with state-of-the-art techniques by reacting together (i) at least one compound chosen from ethylene oxides and propylene oxides, the compound A, with (ii) an isocyanate compound, the compound B, in said polyurethane foam, being uniformly dispersed a micronized inert material, the compound C, chosen from fibreglass, artificial and natural textile fibres, silica, silicates, carbonates, and similar in combination or alone.
- the ethylene oxides and propylene oxides have a molecular weight falling within the range from 200 to 10,000, preferably from 200 to 6000, an hydroxyl number falling within the range from 20 to 1000, preferably from 20 to 800, and a functionality falling within the range from 3 to 8. These compounds are used alone (ethylene oxides or propylene oxides only) or are mixed together in accordance with known techniques.
- the isocyanate compound is chosen from the group comprising toluene diisocyanate, polymethylene-polyphenyl-isocyanates, and diphenylisocyanates with a molecular weight falling within the range from 200 to 8000, ideally from 200 to 6000.
- Compounds A, B, and C are present in the reacting mixture in amounts expressed in percentages by weight, falling within the range from 30 to 75%, from 20 to 65%, and from 5 to 50%, respectively.
- This first panel has a thickness falling within the range from 5 to 500 mm, and a specific weight falling within the range from 50 to 200 Kg/m 3 .
- the micronized material consists of fibreglass, silica, silicates, carbonates, and their mixtures with particle size falling within the range from 10 to 500 ⁇ m, preferably from 50 to 200 ⁇ m; anyhow, possible particle sizes fall within the range from 10 to 50 ⁇ m and from 10 to 30 ⁇ m.
- the material used to make said second layer is a felt, mat, or pressed material of natural or artificial textile fibres with a weight falling within the range from 400 to 1500 g/m 2 and a thickness falling within the range from 10 to 100 mm.
- the first and the second layer are coupled directly in the mould or by means of gluing.
- the preferred version of the final panel comprises a layer of viscoelastic polyurethane foam with a specific weight falling within the range from 85 to 120, preferably from 90 to 105 Kg/m 3 , and containing the micronized material in amounts expressed in percentages by weight falling within the range from 60 to 80%, preferably from 65 to 75%, the remaining being said second layer having a weight falling within the range from 400 to 900 g/m 2 , preferably from 500 to 800 g/m 2 .
- said first layer features a free or visible face with impressions having a broadly curvilinear shape (ideally circular, oval, or elliptical), a maximum transversal dimension falling within the range from 5 to 15 mm, preferably from 7 to 13 mm, a depth falling within the range from 1 to 10 mm, preferably from 2 to 6 mm and a distance between centres from 1.10 to 1.80 times said maximum transversal dimension.
- a broadly curvilinear shape ideally circular, oval, or elliptical
- Panels were made consisting of a first layer of a polyurethane foam material obtained by reacting a mixture consisting of SPECFLEX NS 644 (made by DOW CHEMICAL), S.F. Ns 540 (made by DOW CHEMICAL), and textile fibre (polyester) in proportions of 40%, 50%, and 10%, respectively.
- the panels were made in three thicknesses (20, 30, and 45 mm) with a specific weight equal to 100 Kg/m 3 and were coupled with a second layer consisting of a 20-mm thick mixed textile fibres mat with a weight of 1000 g/m 2 .
- the obtained products underwent sound absorption tests in compliance with ASTM E1050-90 and ASTM C384-95. The results are summarized in Table 1 in terms of % of sound absorption.
- Example 2 A 20-mm thick first layer of material made as described in Example 1 was coupled to a second layer consisting of 100% PES; then, the resulting product underwent the sound absorption test referred to in the previous example. The panel was as it is and compressed as to reduce the thickness by 75%. The obtained results are shown in Table 2.
Landscapes
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Electromagnetism (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Laminated Bodies (AREA)
- Building Environments (AREA)
- Telephone Set Structure (AREA)
- Vehicle Interior And Exterior Ornaments, Soundproofing, And Insulation (AREA)
Abstract
A soundproofing and sound-absorbing panel consisting of two different layers: a first layer of plastic foam, and a second layer of material chosen from textile fibre mat, 100% PES, polyethylene foam, and similar. Said panel features excellent properties, specifically: the weight being equal, the panel dampens noise significantly better than other similar products; or, performance being equal, the panel is lighter than other similar products.
Description
A SOUND-ABSORBING AND SOUNDPROOFING PANEL Technical Field
This invention relates to a sound-absorbing and soundproofing panel. More particularly, it relates to a panel consisting of a first plastic foam layer coupled or not with a second layer of a different material; the panel has high sound-absorbing power, low impact strength, and good mechanical properties in general and is light, deformable, and able to springback slowly to its original shape after the deforming action has ceased. Background Art In the area of sound-absorbing and/or soundproofing materials, several materials are known for some time now to filter and deaden sounds, utilised in specific ways depending on the particular field of application. Examples range from sophisticated and expensive engraved panels for anechoic chambers to simple plastic sheets coupled with high-damping sheets like sheet lead or high-density and low-impact strength plastic used, for example, to sound conditioning motor compartments of boats. In the automobile industry, examples of items used for sound conditioning include panels made of different fibres and/or plastic foam in combination with one layer of bitumen sheeting. Besides varying significantly in performance (which may be very poor sometimes), the above materials have several drawbacks, such as excessive weight (for example, in the case of panels with sheet lead), voluminous size, high cost, or low mechanical strength (for example, the panels with a layer of bitumen sheeting which performance worsens over time and following exposure to low temperatures and/or temperature changes; furthermore, the panels can easily become dry, crack under the effect of the vibrations, and become detached from their support). Attempts put forward to improve the performance of said materials have not always produced the hoped for results. This is particularly true when limited dimensions and high absorptive power are required: the use of thin materials must be compensated for with high-density matter, increasing the weight, otherwise lower sound-insulating performance or limited mechanical properties must be accepted. For example, US patent US-5010113 refers to a flame-retardant and
soundproofing polyurethane material obtained by mixing and reacting together an amino-salt of phosphoric acid, a compound containing at least two reactive hydrogens, and a compound containing at least two isocyanate radicals. The German patent application n. 1991 41229666 describes a sound-insulating viscoelastic foam, having an adhesive surface, obtained by making stoichiometric amounts of a polyisocyanate react with at least two polyols of the polyether type, which are incompatible with each other.
Patent no. EP0884349 describes a soundproofing material consisting of a cross- linked resin - chosen from the group comprising polyolefin, polystyrene, and polychlorovinyls - and an inert filler, preferably barium sulphate (referred to in the examples).
However, these documents do not make it clear what actual sound absorption coefficient is obtained, nor the effect of the inert filler other than to lower the cost of the finished product and to improve heat resistance. Description of the Invention
It is the object of this invention to provide a sound-insulating panel that is light, easy to mould, and very pliable and features a low impact strength, good mechanical strength, and high sound-absorbing and soundproofing performance; in addition, the panel should be able to maintain these properties over time, even in the presence of temperature changes.
The panel in accordance with present invention comprises a first layer, consisting of a viscoelastic plastic foam containing an inertly charged material that is uniformly dispersed, coupled with a second layer consisting of a material chosen from the group of textile fibre mat, 100% PES, and polyethylene foam. The textile fibre mat is of known type and essentially consists of spun yarn waste of different types.
Said first layer of the panel preferably consists of a viscoelastic polyurethane foam made in compliance with state-of-the-art techniques by reacting together (i) at least one compound chosen from ethylene oxides and propylene oxides, the compound A, with (ii) an isocyanate compound, the compound B, in said polyurethane foam, being uniformly dispersed a micronized inert material, the compound C, chosen from fibreglass, artificial and natural textile fibres, silica,
silicates, carbonates, and similar in combination or alone.
More specifically, the ethylene oxides and propylene oxides have a molecular weight falling within the range from 200 to 10,000, preferably from 200 to 6000, an hydroxyl number falling within the range from 20 to 1000, preferably from 20 to 800, and a functionality falling within the range from 3 to 8. These compounds are used alone (ethylene oxides or propylene oxides only) or are mixed together in accordance with known techniques. The isocyanate compound is chosen from the group comprising toluene diisocyanate, polymethylene-polyphenyl-isocyanates, and diphenylisocyanates with a molecular weight falling within the range from 200 to 8000, ideally from 200 to 6000.
Compounds A, B, and C are present in the reacting mixture in amounts expressed in percentages by weight, falling within the range from 30 to 75%, from 20 to 65%, and from 5 to 50%, respectively. This first panel has a thickness falling within the range from 5 to 500 mm, and a specific weight falling within the range from 50 to 200 Kg/m3.
Preferably, the micronized material consists of fibreglass, silica, silicates, carbonates, and their mixtures with particle size falling within the range from 10 to 500 μm, preferably from 50 to 200 μm; anyhow, possible particle sizes fall within the range from 10 to 50 μm and from 10 to 30 μm. Preferably, the material used to make said second layer is a felt, mat, or pressed material of natural or artificial textile fibres with a weight falling within the range from 400 to 1500 g/m2 and a thickness falling within the range from 10 to 100 mm. The first and the second layer are coupled directly in the mould or by means of gluing. The preferred version of the final panel comprises a layer of viscoelastic polyurethane foam with a specific weight falling within the range from 85 to 120, preferably from 90 to 105 Kg/m3, and containing the micronized material in amounts expressed in percentages by weight falling within the range from 60 to 80%, preferably from 65 to 75%, the remaining being said second layer having a weight falling within the range from 400 to 900 g/m2, preferably from 500 to 800 g/m2.
In accordance with a preferred version of this invention, said first layer features a free or visible face with impressions having a broadly curvilinear shape (ideally
circular, oval, or elliptical), a maximum transversal dimension falling within the range from 5 to 15 mm, preferably from 7 to 13 mm, a depth falling within the range from 1 to 10 mm, preferably from 2 to 6 mm and a distance between centres from 1.10 to 1.80 times said maximum transversal dimension. The following examples show the technical results obtained by some panels according to present invention, given in an absolutely exemplification way, not limiting objects and scope of the invention itself. Example 1
Panels were made consisting of a first layer of a polyurethane foam material obtained by reacting a mixture consisting of SPECFLEX NS 644 (made by DOW CHEMICAL), S.F. Ns 540 (made by DOW CHEMICAL), and textile fibre (polyester) in proportions of 40%, 50%, and 10%, respectively. The panels were made in three thicknesses (20, 30, and 45 mm) with a specific weight equal to 100 Kg/m3 and were coupled with a second layer consisting of a 20-mm thick mixed textile fibres mat with a weight of 1000 g/m2. The obtained products underwent sound absorption tests in compliance with ASTM E1050-90 and ASTM C384-95. The results are summarized in Table 1 in terms of % of sound absorption.
TABLE 1
Example 2
A 20-mm thick first layer of material made as described in Example 1 was coupled to a second layer consisting of 100% PES; then, the resulting product underwent the sound absorption test referred to in the previous example. The panel was as it is and compressed as to reduce the thickness by 75%. The obtained results are shown in Table 2.
TABLE 2
FREQUENCY (Hz)
PANEL
Claims
1. A multilayer soundproofing and sound-absorbing panel made of plastics coupled to a second suitable material, characterised in that it comprises a first layer consisting of a plastics foam containing an uniformly dispersed inert filler material and a second layer consisting of a material chosen from the group of textile fibre mat, 100% PES, and polyethylene foam.
2. A panel as claimed in claim 1 wherein said first layer consists of a viscoelastic polyurethane foam made in compliance with state-of-the-art techniques by reacting together (i) at least one compound chosen from ethylene oxides and propylene oxides, (compound A) with (ii) an isocyanate compound, (compound
B), in said polyurethane foam being uniformly dispersed a micronized inert material chosen from fibreglass, calcium carbonate, artificial and natural textile fibres, silica, and similar in combination or alone, (compound C).
3. A panel as claimed in claim 2 wherein said ethylene and propylene oxides have a molecular weight falling within the range from 200 to 10,000, an hydroxyl number falling within the range from 20 to 1000, and functionality falling within the range from 2 to 8.
4. A panel as claimed in claim 3 wherein said ethylene and propylene oxides have a molecular weight falling within the range from 200 to 6000.
5. A panel as claimed in claim 3 wherein said ethylene and propylene oxides have a molecular weight falling within the range from 4000 to 6000.
6. A panel as claimed in claim 2 wherein said isocyanate compound is chosen from the group consisting of toluene diisocyanate, polymethylene-polyphenyl- isocyanates, and diphenylisocyanates.
7. A panel as claimed in claim 2 wherein said micronized material has a particle size falling within the range from 10 to 500 μm.
8. A panel as claimed in claim 7 wherein said particle size falls within the range from 50 to 200 μm.
9. A panel as claimed in claim 2 wherein said micronized material is present in said first layer in amounts expressed in percentages by weight falling within the range from 5 to 50.
10. A panel as claimed in claim 9 wherein said micronized material is present in
said first layer in amounts expressed in percentages by weight falling within the range from 10 to 30.
11. A panel as claimed in claim 1 wherein said first layer features a free or visible face with impressions having a broadly curvilinear shape, ideally circular or oval or elliptical.
12. A panel as claimed in claim 11 wherein said impressions have a maximum transversal dimension falling within the range from 5 to 15 mm, a depth falling within the range from 2 to 6 mm, and a distance between centres from 1.10 to
1.80 times said maximum transversal dimension.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE60317217T DE60317217T2 (en) | 2002-09-24 | 2003-09-24 | SOUND ABSORBING AND SOUNDPROOFING PLATE |
| AU2003277894A AU2003277894A1 (en) | 2002-09-24 | 2003-09-24 | A sound-absorbing and soundproofing panel |
| US10/528,741 US20060040099A1 (en) | 2002-09-24 | 2003-09-24 | Sound-absorbing and soundproofing panel |
| EP03769310A EP1542863B1 (en) | 2002-09-24 | 2003-09-24 | A sound-absorbing and soundproofing panel |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ITRM2002A000472 | 2002-09-24 | ||
| IT000472A ITRM20020472A1 (en) | 2002-09-24 | 2002-09-24 | SOUND ABSORBING AND SOUND INSULATING PANEL. |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| WO2004028796A2 true WO2004028796A2 (en) | 2004-04-08 |
| WO2004028796A3 WO2004028796A3 (en) | 2004-10-21 |
Family
ID=11456487
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/EP2003/010612 WO2004028796A2 (en) | 2002-09-24 | 2003-09-24 | A sound-absorbing and soundproofing panel |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US20060040099A1 (en) |
| EP (1) | EP1542863B1 (en) |
| AT (1) | ATE376926T1 (en) |
| AU (1) | AU2003277894A1 (en) |
| DE (1) | DE60317217T2 (en) |
| IT (1) | ITRM20020472A1 (en) |
| WO (1) | WO2004028796A2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015011241A1 (en) * | 2013-07-24 | 2015-01-29 | Geko Innovations Limited | Acoustic panel |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2009626A1 (en) * | 2007-06-29 | 2008-12-31 | Deutsche Thomson OHG | Apparatus comprising a pickup unit providing three beams for reading data from or writing data to an optical storage medium, and respective optical storage medium |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3919444A (en) * | 1974-04-29 | 1975-11-11 | Harry I Shayman | Acoustical fire-retardant wall and ceiling tile |
| WO1981001816A1 (en) * | 1979-12-27 | 1981-07-09 | L Parker | Composite polyisocyanurate foam board |
| US4283457A (en) * | 1979-11-05 | 1981-08-11 | Huyck Corporation | Laminate structures for acoustical applications and method of making them |
| EP0245636A1 (en) * | 1986-05-13 | 1987-11-19 | Odenwald Chemie GmbH | Sound damping panel |
| EP1031594A1 (en) * | 1999-02-26 | 2000-08-30 | Wacker Polymer Systems GmbH & Co. KG | Process for laminating textiles upon expanded particle foams or foamed articles |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3833259A (en) * | 1972-05-30 | 1974-09-03 | Deere & Co | Vehicle seat comprising three foam layers |
| GB1434618A (en) * | 1973-05-24 | 1976-05-05 | Ici Ltd | Polymer foams |
| US4237238A (en) * | 1979-10-03 | 1980-12-02 | The Upjohn Company | Polyisocyanurate foams based on esterified DMI oxidation residue additive |
| DE59912249D1 (en) * | 1998-10-21 | 2005-08-11 | Arvinmeritor Gmbh | Composite component for vehicle bodies |
-
2002
- 2002-09-24 IT IT000472A patent/ITRM20020472A1/en unknown
-
2003
- 2003-09-24 AU AU2003277894A patent/AU2003277894A1/en not_active Abandoned
- 2003-09-24 DE DE60317217T patent/DE60317217T2/en not_active Expired - Lifetime
- 2003-09-24 US US10/528,741 patent/US20060040099A1/en not_active Abandoned
- 2003-09-24 WO PCT/EP2003/010612 patent/WO2004028796A2/en active IP Right Grant
- 2003-09-24 EP EP03769310A patent/EP1542863B1/en not_active Expired - Lifetime
- 2003-09-24 AT AT03769310T patent/ATE376926T1/en not_active IP Right Cessation
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3919444A (en) * | 1974-04-29 | 1975-11-11 | Harry I Shayman | Acoustical fire-retardant wall and ceiling tile |
| US4283457A (en) * | 1979-11-05 | 1981-08-11 | Huyck Corporation | Laminate structures for acoustical applications and method of making them |
| WO1981001816A1 (en) * | 1979-12-27 | 1981-07-09 | L Parker | Composite polyisocyanurate foam board |
| EP0245636A1 (en) * | 1986-05-13 | 1987-11-19 | Odenwald Chemie GmbH | Sound damping panel |
| EP1031594A1 (en) * | 1999-02-26 | 2000-08-30 | Wacker Polymer Systems GmbH & Co. KG | Process for laminating textiles upon expanded particle foams or foamed articles |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015011241A1 (en) * | 2013-07-24 | 2015-01-29 | Geko Innovations Limited | Acoustic panel |
| US9617728B2 (en) | 2013-07-24 | 2017-04-11 | Geko Innovations Limited | Acoustic panel |
Also Published As
| Publication number | Publication date |
|---|---|
| ITRM20020472A0 (en) | 2002-09-24 |
| AU2003277894A1 (en) | 2004-04-19 |
| ITRM20020472A1 (en) | 2004-03-25 |
| EP1542863B1 (en) | 2007-10-31 |
| DE60317217D1 (en) | 2007-12-13 |
| DE60317217T2 (en) | 2008-08-14 |
| WO2004028796A3 (en) | 2004-10-21 |
| US20060040099A1 (en) | 2006-02-23 |
| EP1542863A2 (en) | 2005-06-22 |
| ATE376926T1 (en) | 2007-11-15 |
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