DE10004859A1 - Fibrous material lining for reducing noise in motor vehicles, comprises hollow elastic members embedded in it - Google Patents
Fibrous material lining for reducing noise in motor vehicles, comprises hollow elastic members embedded in itInfo
- Publication number
- DE10004859A1 DE10004859A1 DE10004859A DE10004859A DE10004859A1 DE 10004859 A1 DE10004859 A1 DE 10004859A1 DE 10004859 A DE10004859 A DE 10004859A DE 10004859 A DE10004859 A DE 10004859A DE 10004859 A1 DE10004859 A1 DE 10004859A1
- Authority
- DE
- Germany
- Prior art keywords
- composite material
- material according
- hollow body
- layer
- fibrous layer
- 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.)
- Ceased
Links
- 239000002657 fibrous material Substances 0.000 title abstract 3
- 239000002131 composite material Substances 0.000 claims description 23
- 229920000728 polyester Polymers 0.000 claims description 4
- 230000004888 barrier function Effects 0.000 claims description 2
- 239000010410 layer Substances 0.000 description 32
- 239000000835 fiber Substances 0.000 description 24
- 238000010521 absorption reaction Methods 0.000 description 11
- 239000013065 commercial product Substances 0.000 description 8
- 239000004745 nonwoven fabric Substances 0.000 description 8
- 239000000047 product Substances 0.000 description 5
- 239000006260 foam Substances 0.000 description 4
- 238000009413 insulation Methods 0.000 description 3
- 238000013016 damping Methods 0.000 description 2
- 210000003608 fece Anatomy 0.000 description 2
- 238000003475 lamination Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 230000004580 weight loss Effects 0.000 description 2
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 description 1
- 241000566113 Branta sandvicensis Species 0.000 description 1
- 229920000742 Cotton Polymers 0.000 description 1
- 239000010426 asphalt Substances 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000007596 consolidation process Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009408 flooring Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 239000012510 hollow fiber Substances 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 239000012774 insulation material Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 239000002557 mineral fiber Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000005011 phenolic resin Substances 0.000 description 1
- 229920001568 phenolic resin Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000002243 precursor Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 230000035807 sensation Effects 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/54—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by welding together the fibres, e.g. by partially melting or dissolving
- D04H1/542—Adhesive fibres
- D04H1/55—Polyesters
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/54—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by welding together the fibres, e.g. by partially melting or dissolving
- D04H1/541—Composite fibres, e.g. sheath-core, sea-island or side-by-side; Mixed fibres
- D04H1/5412—Composite fibres, e.g. sheath-core, sea-island or side-by-side; Mixed fibres sheath-core
-
- 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
-
- 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
- G10K11/165—Particles in a matrix
-
- 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
- E04B2001/7687—Crumble resistant fibrous blankets or panels using adhesives or meltable fibres
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Textile Engineering (AREA)
- Architecture (AREA)
- Electromagnetism (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Multimedia (AREA)
- Nonwoven Fabrics (AREA)
- Laminated Bodies (AREA)
- Vehicle Interior And Exterior Ornaments, Soundproofing, And Insulation (AREA)
Abstract
Description
Die Erfindung betrifft einen Schichtverbundwerkstoff zur Verwendung als geräuschmindernde Auskleidung in Fahrzeuginnenräumen, beispielsweise zur Verwendung als Bodenbelag, Dachhimmel oder Kofferraumausklei dung.The invention relates to a layered composite material for use as a noise reducing lining in Vehicle interiors, for example for use as flooring, headlining or trunk lining dung.
Um die Übertragung von Fahrgeräuschen ins Fahrzeugin nere zu mindern, werden in der Automobilindustrie seit längerem mehrschichtige Schallisolierungen ver wendet. Diese sind vorwiegend als Masse/Feder-System konzipiert, bei dem die Federschicht aus Faservliesen oder Weichschaum besteht und die Masse durch eine kompakte, meist Bitumen enthaltende Schwerschicht ge bildet wird. Bodenisolierungen und Kofferraumausklei dungen besitzen zumeist noch eine sichtseitige Tep pichkaschierung, die ebenfalls zur Verbesserung der Akustik beitragen kann. Naturgemäß sind derartige Schichtverbundsysteme schwer. Das Flächengewicht ei nes solchen Dämm- und Dämpfungssystems beträgt mehre re Kilogramm je Quadratmeter. Zur Gewichtsreduzierung, möglichst ohne Verlust an akustischer Wirksam keit, wurden Abwandlungen des Feder/Masse/Systems vorgeschlagen. In EP-A-0 334 178 wird beispielsweise offenbart, die Federschicht aus Weichschaum, und die Masseschicht aus demselben Material zu gestalten, wo bei der Masseschichtbereich durch Vlies- oder Schnittschaumeinlagen verfestigt und nahezu luftun durchlässig kompaktiert ist. Wie üblich gehört auch zu diesem System eine Dekorabdeckung wie eine Tep pichschicht. Laut WO 98/18657 kann die Schwerschicht des Schichtverbundes durch eine mikroporöse Verstei fungsschicht geringen Flächengewichtes ersetzt wer den, mit der Folge verbesserter akustischer Eigen schaften.For the transmission of driving noises into the vehicle mitigate others in the automotive industry multilayer sound insulation ver turns. These are primarily a mass / spring system designed in which the spring layer is made of non-woven fabrics or soft foam and the mass by a compact heavy layer containing mostly bitumen is forming. Floor insulation and trunk lining most of the time, the dung has a visible tep lamination, which also improve the Acoustics can contribute. Such are natural Layered composite systems difficult. The basis weight egg Such an insulation and damping system is several re kilograms per square meter. For weight loss, if possible without loss of acoustic effectiveness There have been modifications of the spring / mass / system suggested. For example, in EP-A-0 334 178 discloses the spring layer of soft foam, and the To design the ground layer from the same material where in the mass layer area by fleece or Cut foam inserts solidified and almost air-free is compactly permeable. As usual also belongs for this system a decorative cover like a tep layer. According to WO 98/18657, the heavy layer the layer composite by a microporous reinforcement layer of light basis weight who replaced that, with the consequence of improved acoustic properties create.
In allen beschriebenen akustisch wirksamen Verbundsy stemen ist die Federschicht entweder ein offenporiger Leichtschaum oder ein ebenfalls offenporiges Faser vlies aus Natur-Organo- oder Mineralfasern, ggf. ein Vlies aus Mischungen dieser Fasern. Die Offenporig keit bewirkt zusätzlich, wenn die Dekorabdeckung ebenfalls offenportg ist, eine gewisse Dämpfung der hohen Frequenzen des Störschalles.In all acoustically effective composite systems described The spring layer is either an open-pore one Light foam or an open-pored fiber fleece made of natural organic or mineral fibers, if necessary Fleece made from mixtures of these fibers. The open pore speed also causes if the decorative cover is also open port, a certain damping of the high frequencies of noise.
Hier setzt die Erfindung an, die zur Aufgabe hat eine Faserschicht anzugeben, die in möglichst verschieden artigen Schichtverbundwerkstoffen an sich bekannten Aufbaues und ggf. unterschiedlicher akustischer Wir kung einsetzbar ist, die darüber hinaus als Einzel schicht schon derartig akustisch wirksam ist, daß ein einfacher Schichtverbund möglich wird, der zudem noch dadurch erheblich zur Gewichtsreduzierung beitragen kann, daß wegen der großen akustischen Wirksamkeit der Faserschicht in den meisten Fällen eine Schwer schicht im Verbundwerkstoff entfallen kann. This is where the invention comes in, which has a task Specify fiber layer that is as different as possible like layered composite materials known per se Structure and possibly different acoustic we can also be used as a single layer is so acoustically effective that a simple layered composite is possible, which also thereby contribute significantly to weight loss can that because of the great acoustic effectiveness the fiber layer is heavy in most cases layer in the composite material can be omitted.
Diese Aufgabe wird erfindungsgemäß gelöst durch das im kennzeichnenden Teil des Anspruches 1 angegebene Merkmal. Die Unteransprüche geben vorteilhafte Wei terbildungen der Erfindung an.This object is achieved by the specified in the characterizing part of claim 1 Characteristic. The subclaims give advantageous Wei further developments of the invention.
Bei Schallabsorptionsmessungen an Faserschichten, die auf ihre Eignung als Federschicht in Schallabsorpti ons-Verbundsystemen untersucht wurden, wurde überra schend gefunden, daß Faserschichten, denen geblähte elastische Hohlkörper zugemischt waren (ursprünglich zur Volumenvergrößerung der Faserschicht), ein erheb liches eigenes Schallabsorptionsvermögen aufweisen. Bereits ohne Zusammenwirken mit anderen Verbund schichten wurden Absorptiotiswerte erreicht, die de nen handelsüblicher Produkte erheblich größerer Dicke entsprechen, sie sogar in Frequenzbereichen zwischen 400 Hz und 1 KHz übertreffen konnten. Ein Vergleich einer erfindungsgemäßen Faserschicht mit einem han delsüblichen Fertigprodukt aus phenolharzgebundener Baumwolle, das für den gleichen Zweck eingesetzt wird, zeigt die Vorteile der Erfindung:For sound absorption measurements on fiber layers, the on their suitability as a spring layer in sound absorption ons composite systems were examined, was exceeded schend found that layers of fiber, the blown elastic hollow bodies were mixed in (originally to increase the volume of the fiber layer), a significant increase have their own sound absorption capacity. Already without interaction with other associations layers were reached, the de commercially available products of considerably greater thickness correspond, they even in frequency ranges between 400 Hz and 1 KHz could surpass. A comparison a fiber layer according to the invention with a han commercially available finished product from phenolic resin-bound Cotton that is used for the same purpose shows the advantages of the invention:
Flächengewicht: 1220 g/m2
Basis weight: 1220 g / m 2
Dicke: 15 mmThickness: 15 mm
Flächengewicht: 300 g/m2
Basis weight: 300 g / m 2
Dicke: 4,5 mmThickness: 4.5 mm
Bei vergleichbaren Absorptionswerten beträgt das Flä chengewicht der Faserschicht somit nur etwa ein Vier tel des Flächengewichtes des Handelsproduktes, bei nur etwa einem Drittel von dessen Dicke. With comparable absorption values, the area is weight of the fiber layer is only about a four tel of the basis weight of the commercial product, at only about a third of its thickness.
Weiterhin zeigte sich, daß in dem empfindungserhebli chen Frequenzbereich zwischen 400 Hz und 1 KHz die untersuchte Faserschicht mit Hohlkörpern sogar deut lich bessere Absorptionswerte aufwies als das Han delsprodukt. Da in einem Fahrzeug meist mehrere Qua dratmeter Dämmstoff eingesetzt sind, ergibt der er findungsgemäße Schichtverbundwerkstoff ein erhebli ches Einsparpotential an Gewicht und Raum. Bei ver gleichbarer Dicke mit dem Handelsprodukt ergäbe sich bei ca. 14 mm Dicke für eine entsprechende Faser schicht mit 900 g/m2 immer noch eine Gewichtserspar nis von über 300 g/m2, entsprechend dem bekannten Zu sammenhang zwischen der Dicke der Absorptionsschicht und der Schallabsorption ergäbe sich für diesen Fall eine in allen Frequenzbereichen deutlich verbesserte Schallabsorption gegenüber dem Handelsprodukt.Furthermore, it was found that in the sensation-significant frequency range between 400 Hz and 1 KHz, the examined fiber layer with hollow bodies even had significantly better absorption values than the commercial product. Since several square meters of insulation material are usually used in a vehicle, the layered composite material according to the invention results in considerable weight and space savings potential. At comparable thickness with the commercial product, there would still be a weight saving of over 300 g / m 2 , corresponding to the known relationship between the thickness of the absorption layer and at approx. 14 mm thickness for a corresponding fiber layer with 900 g / m 2 In this case, the sound absorption would result in a significantly improved sound absorption compared to the commercial product in all frequency ranges.
Um die erforderliche akustische Wirksamkeit des Fa servlieses mit eingebetteten Hohlkörpern zu erzielen, ist ein Raumgewicht von höchstens 150 kg/m3 ausrei chend. Die Dicke des Faservlieses kann unter 20 mm liegen, vorzugsweise im Bereich zwischen 5 und 10 mm, und der Volumenanteil der Hohlkörper am Volumen der gesamten Faserstoffschicht sollte 10% nicht unter schreiten. Die Hohlkörper haben vorzugsweise Kugelge stalt. Derartige Kugeln sind als blähfähige Vorpro dukte beispielsweise unter dem Handelsnamen Expancel erhältlich. In Wasser dispergiert, lassen sie sich in ein Vlies aus 2-Komponenten-Polyesterfasern (Biko- Fasern) beispielsweise durch Tränken oder Aufsprühen einbringen. Derartige Faservliese lassen sich ther misch verfestigen, d. h. die äußere Komponente der Biko-Fasern, die einen niedrigeren Schmelzpunkt hat als die Kernfasern, schmilzt beim thermischen Verfe stigen und verklebt die Fasern des Vlieses an deren Kreuzungspunkten. Dieser thermische Prozeß kann auch genutzt werden, das ungeblähte Vorprodukt zu blähen und so die elastischen Hohlkörper im Faservlies zu erzeugen.In order to achieve the required acoustic effectiveness of the Fa servlieses with embedded hollow bodies, a density of at most 150 kg / m 3 is sufficient. The thickness of the nonwoven fabric can be less than 20 mm, preferably in the range between 5 and 10 mm, and the volume fraction of the hollow body in the volume of the entire fiber layer should not be less than 10%. The hollow body preferably have Kugelge shape. Such balls are available as expandable Vorpro products, for example under the trade name Expancel. Dispersed in water, they can be introduced into a fleece made of 2-component polyester fibers (bico fibers), for example by soaking or spraying. Such non-woven fabrics can be thermally solidified, ie the outer component of the bico fibers, which has a lower melting point than the core fibers, melts during thermal Verfe and glues the fibers of the non-woven fabric at their crossing points. This thermal process can also be used to inflate the unexpanded preliminary product and thus produce the elastic hollow bodies in the nonwoven fabric.
Für die akustische Wirksamkeit ist die Kugelgestalt der Hohlkörper jedoch nicht unabdingbar: Langge streckt ausgebildete Hohlkörper, beispielsweise in Form von endseitig verschlossenen Hohlfaserabschnit ten, erfüllen den gleichen Zweck. Die gute akustische Wirksamkeit der Faserstoffschichten mit eingebetteten Hohlkörpern ermöglicht in vielen Fällen einen sehr einfachen Schichtverbund: Ein einheitlicher Kern aus dem Faserstoff ist zwischen zwei Deckschichten ange ordnet, von denen die rückseitige beispielsweise eine Feuchtesperre sein kann, während die sichtseitige Ka schierung nach Beanspruchungs- und/oder ästhetischen Kriterien gewählt ist. In vielen Fällen ist die Sichtseite beispielsweise eine Teppichkaschierung. Doch auch in komplizierter ausgebauten Schallschluck systemen ist eine derartige Faserstoffschicht als Komponente einsetzbar, beispielsweise als Feder schicht in einem Masse/Feder-System. In diesem Fall wird die akustische Wirksamkeit des Verbundsystems zusätzlich verbessert.The spherical shape is for acoustic effectiveness but the hollow body is not essential: Langge stretches hollow bodies, for example in Form of hollow fiber section closed at the end serve the same purpose. The good acoustic Effectiveness of the fibrous layers with embedded In many cases, hollow bodies make it possible simple layer composite: a uniform core the fiber is between two outer layers arranges, of which the back one, for example Moisture barrier can be, while the visible Ka Lubrication according to stress and / or aesthetic Criteria is selected. In many cases it is On the visible side, for example, a carpet lamination. But also in more complicated developed sound absorption systems is such a fibrous layer as Component can be used, for example as a spring layer in a mass / spring system. In this case becomes the acoustic effectiveness of the composite system additionally improved.
Das angeführte Beispiel des thermisch verfestigten Polyestervlieses erläutert ein fertigungstechnisch besonders günstiges Fertigungsverfahren. Andere Fa sern aus dem Organo-Mineral- und Biobereich, mit de nen Vliese gebildet werden können, eignen sich für die Realisierung der Erfindung ebenso, wie Mischfa ser-Vliese. Ggf. ist die thermische Verfestigung ver zichtbar und kann durch Vernadeln ersetzt werden. Auch in solchen Vliesen können blähfähige Vorprodukte durch eine thermische Nachbehandlung des vernadelten Vlieses zu entsprechenden Hohlkörpern entwickelt wer den.The given example of the thermally hardened Polyester fleece explains a manufacturing technology particularly inexpensive manufacturing process. Other company organo-mineral and organic products, with de Nene nonwovens can be used for the implementation of the invention as well as Mischfa fleece. Possibly. is the thermal consolidation ver essential and can be replaced by needling. Expandable precursors can also be used in such nonwovens by thermal post-treatment of the needled Who develops fleece to corresponding hollow bodies the.
Die Erfindung sei nunmehr anhand der Figuren näher erläutert:The invention will now be explained in more detail with reference to the figures explains:
Fig. 1 zeigt eine schematische Darstellung eines Volumenelementes der Faserstoffschicht, und Fig. 1 shows a schematic representation of a volume element of the fibrous layer, and
Fig. 2 zeigt die Absorptionskurven eines Handels produktes und einer Faserstoffschicht mit eingebetteten Hohlkörpern. Fig. 2 shows the absorption curves of a commercial product and a fibrous layer with embedded hollow bodies.
In Fig. 1 ist mit 1 ein Volumenausschnitt eines Fa servlieses bezeichnet. 2 sind die Biko-Polyesterfa sern, die an den Kreuzungspunkten 5 durch thermisches Verfestigen miteinander verklebt sind. Die kugelför migen Hohlräume 3 sind von die Hohlkörper bildenden elastischen Polymerhüllen 4 umschlossen, die sich zwischen den Fasern 2 anlagern und beim thermischen Verfestigen nach dem Blähen punktuell ebenfalls mit der Außenhülle der Fasern 2 verbunden werden. Der Durchmesser der Hohlkörper kann zwischen einigen Hun derstel Millimeter und ca. einigen Millimetern vari ieren; er ist vor allem von der Faserstoffdicke ab hängig, in die die Hohlkörper eingelagert werden sol len. Bevorzugt sind Durchmesser zwischen 0,02 mm und 0,1 mm.In Fig. 1, 1 is a volume section of a Fa servlieses. 2 are the biko-polyester fibers that are glued together at the crossing points 5 by thermal solidification. The kugelför shaped cavities 3 are surrounded by the hollow body-forming elastic polymer sheaths 4 , which accumulate between the fibers 2 and are also selectively connected to the outer shell of the fibers 2 after thermal expansion after expansion. The diameter of the hollow body can vary between a few hundredths of a millimeter and approximately a few millimeters; it is primarily dependent on the fiber thickness in which the hollow bodies are to be stored. Diameters between 0.02 mm and 0.1 mm are preferred.
In Fig. 2 ist mit 6 die flächenbezogene Frequenzkur ve eines Faservlieses mit eingebetteten elastischen Hohlkörpern (Dicke: 4,5 mm, Flächengewicht: 300 g/m2) bzeichnet, die der entsprechenden Kurve für den han delsüblichen Dämmstoff Sommold (Dicke: 15 mm, Flä chengewicht: 1200 g/m2) gegenübergestellt, welche mit 7 bezeichnet ist. In den empfindungsrelevanten Frequenzbereichen zwischen 0,4 KHz und 1 KHz ist das Fa servlies mit Hohlkörpern trotz geringerer Dicke und vor allem trotz geringeren Flächengewichtes dem Han delsprodukt deutlich überlegen, im Bereich zwischen 2 KHz und 5 KHz, in dem Bereich also, der für die Sprachverständlichkeit maßgebend ist, hat das Faserv lies zwar keine so große Absorptionsfähigkeit wie das Handelsprodukt, aber immer noch Werte, die eine gute Sprachverständlichkeit im Innenraum bei ausreichender Absenkung des Störschallpegels garantieren.In Fig. 2, the area-related frequency curve ve of a nonwoven fabric with embedded elastic hollow bodies (thickness: 4.5 mm, weight per unit area: 300 g / m 2 ) is designated by 6, which corresponds to the corresponding curve for the commercially available insulating material Sommold (thickness: 15 mm , Area weight: 1200 g / m 2 ), which is designated by 7. In the frequency ranges between 0.4 KHz and 1 KHz that are relevant to sensation, the fa servlies with hollow bodies is clearly superior to the commercial product, despite its reduced thickness and, above all, its lower basis weight, in the range between 2 KHz and 5 KHz, in the range for the Speech intelligibility is decisive, although the fiber read has not as much absorption capacity as the commercial product, but still values that guarantee good speech intelligibility in the interior with sufficient reduction of the noise level.
Claims (12)
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10004859A DE10004859A1 (en) | 2000-02-03 | 2000-02-03 | Fibrous material lining for reducing noise in motor vehicles, comprises hollow elastic members embedded in it |
PCT/EP2001/001192 WO2001057301A1 (en) | 2000-02-03 | 2001-02-05 | Acoustically effective fibrous material |
AU2001237364A AU2001237364A1 (en) | 2000-02-03 | 2001-02-05 | Acoustically effective fibrous material |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10004859A DE10004859A1 (en) | 2000-02-03 | 2000-02-03 | Fibrous material lining for reducing noise in motor vehicles, comprises hollow elastic members embedded in it |
Publications (1)
Publication Number | Publication Date |
---|---|
DE10004859A1 true DE10004859A1 (en) | 2001-09-27 |
Family
ID=7629773
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE10004859A Ceased DE10004859A1 (en) | 2000-02-03 | 2000-02-03 | Fibrous material lining for reducing noise in motor vehicles, comprises hollow elastic members embedded in it |
Country Status (3)
Country | Link |
---|---|
AU (1) | AU2001237364A1 (en) |
DE (1) | DE10004859A1 (en) |
WO (1) | WO2001057301A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10248191A1 (en) * | 2002-10-16 | 2004-05-06 | Hepp, Rainer, Dr. | Material to absorb mechanical energy, and especially impact forces at pneumatic tire side walls, has layer(s) of intersecting yarns/filaments to form cells filled with pliable plugs |
US6984444B2 (en) | 2000-03-15 | 2006-01-10 | Lear Corporation | Interior lining component |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20030138594A1 (en) * | 2002-01-18 | 2003-07-24 | Honeywell International, Inc., Law Dept. | Non-woven shaped fiber media loaded with expanded polymer microspheres |
DE102010047533A1 (en) * | 2010-09-13 | 2012-03-15 | Eswegee Vliesstoff Gmbh | Nonwoven fabric for acoustic applications with increased sound absorption properties |
DE102016101816A1 (en) * | 2016-02-02 | 2017-08-03 | Claus Schierz | layer material |
CN117107934B (en) * | 2023-10-24 | 2024-01-23 | 中国建筑西南设计研究院有限公司 | Double-pore sound absorption reinforced composite material and preparation method and application thereof |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0334178A2 (en) * | 1988-03-24 | 1989-09-27 | Stankiewicz GmbH | Sound-insulating assembly, its use and method of making it |
WO1998018657A1 (en) * | 1996-10-29 | 1998-05-07 | Rieter Automotive (International ) Ag | Ultralight, multifunctional sound-insulating kit |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3231971A1 (en) * | 1982-08-27 | 1984-03-15 | Helmut 6780 Pirmasens Schaefer | INSOLE FOR SHOES AND METHOD FOR THE PRODUCTION THEREOF |
DE8406900U1 (en) * | 1984-03-07 | 1984-05-30 | J.H. Benecke Gmbh, 3000 Hannover | PLASTIC FIBER FLEECES |
DE3540537A1 (en) * | 1985-11-15 | 1987-05-21 | Klaus Kurt Koelzer | REINFORCEMENT MATERIAL |
DE4103351A1 (en) * | 1991-02-05 | 1992-08-06 | Koelzer Klaus Kurt | LIGHT FILLER MATERIAL AND METHOD FOR THE PRODUCTION THEREOF |
AU7092494A (en) * | 1993-09-21 | 1995-04-10 | W.L. Gore & Associates, Inc. | Puffed insulative material and methods for making such material |
EP0714755A1 (en) * | 1994-11-15 | 1996-06-05 | Klaus Kurt Kölzer | Compressed light filler for thermosets and process for its manufacture |
-
2000
- 2000-02-03 DE DE10004859A patent/DE10004859A1/en not_active Ceased
-
2001
- 2001-02-05 AU AU2001237364A patent/AU2001237364A1/en not_active Abandoned
- 2001-02-05 WO PCT/EP2001/001192 patent/WO2001057301A1/en active Application Filing
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0334178A2 (en) * | 1988-03-24 | 1989-09-27 | Stankiewicz GmbH | Sound-insulating assembly, its use and method of making it |
WO1998018657A1 (en) * | 1996-10-29 | 1998-05-07 | Rieter Automotive (International ) Ag | Ultralight, multifunctional sound-insulating kit |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6984444B2 (en) | 2000-03-15 | 2006-01-10 | Lear Corporation | Interior lining component |
DE10248191A1 (en) * | 2002-10-16 | 2004-05-06 | Hepp, Rainer, Dr. | Material to absorb mechanical energy, and especially impact forces at pneumatic tire side walls, has layer(s) of intersecting yarns/filaments to form cells filled with pliable plugs |
Also Published As
Publication number | Publication date |
---|---|
WO2001057301A1 (en) | 2001-08-09 |
AU2001237364A1 (en) | 2001-08-14 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE60106160T2 (en) | Sound-insulating and sound-insulating structure for vehicles | |
EP2609586B1 (en) | Broadband sound absorber | |
EP1058618B1 (en) | Sound absorbent thin-layer laminate | |
EP0334178B1 (en) | Sound-insulating assembly, its use and method of making it | |
DE60318681T2 (en) | MUFFLER ASSEMBLY AND PART WITH A WALL COVERED WITH THE ASSEMBLY | |
DE2725156C2 (en) | Multi-layer component for sound absorption and insulation | |
EP0934180B2 (en) | Ultralight, multifunctional sound-insulating kit | |
WO1999058833A1 (en) | Heat and sound insulating shroud for the engine compartment of motor vehicles | |
EP1202874A1 (en) | Component with high absorbing effect over a wide frequency range | |
DE3430775A1 (en) | CARPET PART, METHOD FOR ITS PRODUCTION AND USE | |
DE3536379A1 (en) | Air duct, in particular in motor vehicles | |
DE202013012568U1 (en) | Foam-type acoustic element of a vehicle body panel component | |
EP2251858A1 (en) | Material structure for sound insulation | |
DE10004859A1 (en) | Fibrous material lining for reducing noise in motor vehicles, comprises hollow elastic members embedded in it | |
DE102006015498B4 (en) | Energy-saving soundproofing | |
DE4123593A1 (en) | Sound- and heat-insulated bus roof - has polyurethane foam perforated before compression to form inner ceiling | |
DE102005003994A1 (en) | Acoustic absorber for motor vehicle, multiple hollow chamber units connected to flat absorber part and formed from same foil material, where chamber units are filled with air and foil material is formed by flexible plastic foils | |
DE2456916A1 (en) | CLADDING ELEMENT | |
DE10360427A1 (en) | Sound-reducing flat element for lining the cabin of a vehicle comprises a heavy layer having openings filled with a fleece material of a first fleece layer, and a light layer not made from a fleece material | |
EP2275253B1 (en) | Acoustic damping element | |
EP2279859B1 (en) | Acoustic roof reinforcement insulating board and method for producing same | |
DE9408097U1 (en) | Soundproofing component | |
DE102010039619A1 (en) | Lining component for door sill of motor car, has acoustic portion to absorb noise, which is arranged between visible portion and outer side surface of motor car in a state where lining component is attached to motor car | |
EP2732446B1 (en) | Highly absorptive sound insulation component, in particular for the motor vehicle interior | |
DE19722997C2 (en) | Acoustically effective insulation material and covering part and method for its production |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
OP8 | Request for examination as to paragraph 44 patent law | ||
8131 | Rejection |