EP1321554A1 - Insulation material - Google Patents
Insulation material Download PDFInfo
- Publication number
- EP1321554A1 EP1321554A1 EP02022994A EP02022994A EP1321554A1 EP 1321554 A1 EP1321554 A1 EP 1321554A1 EP 02022994 A EP02022994 A EP 02022994A EP 02022994 A EP02022994 A EP 02022994A EP 1321554 A1 EP1321554 A1 EP 1321554A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- nonwoven
- insulation material
- fibers
- material according
- melt adhesive
- 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.)
- Granted
Links
- 239000012774 insulation material Substances 0.000 title claims abstract description 26
- 239000000835 fiber Substances 0.000 claims abstract description 65
- 238000009413 insulation Methods 0.000 claims abstract description 11
- 239000011159 matrix material Substances 0.000 claims abstract description 8
- 229920001169 thermoplastic Polymers 0.000 claims abstract description 8
- 239000004416 thermosoftening plastic Substances 0.000 claims abstract description 8
- 239000004745 nonwoven fabric Substances 0.000 claims description 15
- 238000005452 bending Methods 0.000 claims description 12
- 239000004831 Hot glue Substances 0.000 claims description 10
- 239000000203 mixture Substances 0.000 claims description 6
- 238000000926 separation method Methods 0.000 claims description 6
- 229920000139 polyethylene terephthalate Polymers 0.000 claims description 5
- -1 polyethylene terephthalates Polymers 0.000 claims description 3
- 229920000642 polymer Polymers 0.000 claims description 2
- 229920000098 polyolefin Polymers 0.000 claims 1
- 238000010521 absorption reaction Methods 0.000 abstract description 16
- 239000000853 adhesive Substances 0.000 abstract description 2
- 230000001070 adhesive effect Effects 0.000 abstract description 2
- 238000012360 testing method Methods 0.000 description 12
- 238000004519 manufacturing process Methods 0.000 description 7
- 239000000463 material Substances 0.000 description 7
- 238000007596 consolidation process Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 239000005020 polyethylene terephthalate Substances 0.000 description 4
- 238000005253 cladding Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 239000000047 product Substances 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- 238000007711 solidification Methods 0.000 description 3
- 230000008023 solidification Effects 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 229920005830 Polyurethane Foam Polymers 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 239000006260 foam Substances 0.000 description 2
- 229920000728 polyester Polymers 0.000 description 2
- 239000011496 polyurethane foam Substances 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 239000003381 stabilizer Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 229920001187 thermosetting polymer Polymers 0.000 description 2
- 239000004640 Melamine resin Substances 0.000 description 1
- 229920000877 Melamine resin Polymers 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 150000001412 amines Chemical class 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000000711 cancerogenic effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 231100000315 carcinogenic Toxicity 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 239000011246 composite particle Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 239000002657 fibrous material Substances 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229920001519 homopolymer Polymers 0.000 description 1
- 239000012948 isocyanate Substances 0.000 description 1
- 150000002513 isocyanates Chemical class 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000002557 mineral fiber Substances 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N phenol group Chemical group C1(=CC=CC=C1)O ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000002984 plastic foam Substances 0.000 description 1
- 229920006267 polyester film Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 239000012209 synthetic fiber Substances 0.000 description 1
- 229920002994 synthetic fiber Polymers 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 239000002759 woven fabric Substances 0.000 description 1
Images
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
- D04H1/44—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 the fleeces or layers being consolidated by mechanical means, e.g. by rolling
- D04H1/46—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 the fleeces or layers being consolidated by mechanical means, e.g. by rolling by needling or like operations to cause entanglement of fibres
-
- 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
-
- 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
- E04B1/88—Insulating elements for both heat and sound
-
- 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
Definitions
- Insulation materials for the absorption of sound waves and for thermal Insulation, especially for use in the automotive industry, is in the stand already known in technology.
- WO 97/45581 discloses an insulating fine fiber fleece produced using meltblown technology for damping sound waves for use in vehicle construction, which consists of homo- and copolymeric polypropylene and the one phenolic stabilizer to increase thermal resistance is added.
- the disadvantage is that the mechanical stability is due to low internal consolidation is not too high, so such a fine fiber fleece not easy to assemble, trade and assemble.
- the proportion of the stabilizing agent must be high so that the best possible Internal consolidation is achieved. This means that the variety is no longer guaranteed.
- sound absorbing and heat insulating components from the EP 0683280 known, predominantly from a composite of a nonwoven Plastic fibers - PET and PBT - with a laminated polyester film.
- DE 19821532 describes heat and sound-insulating cladding for covering the end wall of engine compartments or in the area of the transmission tunnel of motor vehicles. These are composed of an engine-side cover layer, which is formed from a fleece made of PES or glass or carbon or ceramic or mineral fibers, a thermosetting foam layer made of melamine resin, and an acoustically insulating layer made of plastic foam, composite particle foam or non-woven fabric made of native or synthetic fibers.
- the different material composition of such cladding enables no economic separation of raw materials and does not offer environmentally friendly Disposal after use.
- DE 4206411 deals with a sound-absorbing molded part for cladding Motor vehicles with a carrier layer made of open-celled flexible polyurethane foam, on which an open top layer of polyester nonwoven is laminated is, the flexible polyurethane foam with a thermosetting dispersion is impregnated.
- a disadvantage is the unpleasant odor nuisance caused by fogging for the occupants when using the parts in the interior of the passenger compartment due to the in the Chemicals contained in products, e.g. due to the contained flame retardants.
- DE 19708188 shows a soundproofing material made from nonwovens thermoplastic fibers, for example made of polyester fibers and in two Stages through a mechanical solidification process as well as one subsequent pressure / heat treatment is compressed. Through this Solidification a defined flow resistance range is reached.
- the soundproofing materials produced in this way have a thickness of only 0.3 to 3 mm and, in addition to having a rigid product character, therefore have a corresponding low thermal insulation.
- the invention has set itself the task, away from the known, rigid Insulation materials for the absorption of sound waves and for thermal Insulation to a flexible, soft sound and heat insulation material to get.
- the 2.2 dtex fiber that is used in the later thermal consolidation Binding fiber acts, has a significantly lower in the jacket area Melting point than the other two blend components that act as matrix fibers are provided.
- the homogeneously prepared mixture is fed to a card in the form of a fiber mat in order to form a fleece therefrom, which is paneled to the desired basis weight of, for example, 300 g / m 2 using a horizontal layer.
- the fleece passes through a needle machine for mechanical consolidation. In this case, needling is carried out on both sides. With the help of the method used and through the special selection of the needles used, which each have only one notch, the fleece is sufficiently internally consolidated, the softness and thickness of the material according to the invention not being adversely affected.
- the mechanical consolidation is followed directly by a thermal one Treatment in a dryer, so that the thus obtained inventive
- the end product has the properties of softness, heat insulation and sound absorption having.
- the fleece runs on a conveyor belt downstream of the needle machine a sieve drum dryer which heated and perforated two on the circumference Has sieve drums. During the dryer passage, hot air flows through a vacuum built up inside the sieve drums.
- the 2.2 dtex fiber softens superficial, becomes bindable and adhesive and forms binding sites on the Crossing points between binding and matrix fibers.
- the decisive factor for the production of the insulation material according to the invention is The fact that neither before nor during the cooling process no additional The nonwoven fabric is compressed or compressed. The fixation of the fleece happens only at the binding sites that are already during the Have trained dryer passage.
- this softness has a positive effect on the acoustic Properties, on the other hand based on the thermal insulation effect.
- the material adapts perfectly to three-dimensional contours, for example tools for the production of vehicle walls or covers on,
- the measured values for the weight-related bending stiffness in the longitudinal and transverse directions from Table 1 show the clear difference when comparing the insulation material according to the invention with a conventional insulation material. So it is much easier with the nonwoven according to the invention, a Contour adjustment to achieve because the nonwoven compared to the state of Technology has a smaller weight-related bending stiffness, less in itself is stiff.
- Table 1 shows the resulting weight-related bending stiffnesses for various basis weights, samples 1 to 3 of a nonwoven fabric produced according to the invention and sample 4 produced according to the prior art, which comprises 55% of a thermally bonded, needled nonwoven fabric made of 0.7 dtex PES matrix fiber and 2.2 dtex CoPES / PES bicomponent melt fiber describes 45%.
- the fleece For the further processing of the fleece according to the invention, it is important that, in addition to the softness, the fleece also has a structural strength. This Property is particularly critical when exposed to mechanical Stress, e.g. B. in handling, assembly and assembly. This is achieved in the nonwoven fabric according to the invention by the combination of needling on both sides and the subsequent thermal solidification by the hot melt adhesive fibers
- the strength measured which is a non-woven fabric split in the middle in its thickness of another Separation movement opposed.
- the sample holder Tear testing machine for example a Zwick 1425, clamped.
- the upper The sample holder is attached to the movable crossbar by means of a load cell appropriate. After the start of the test, the traverse settles at a constant speed Moving upwards, the nonwoven is separated, which on the Load cell applied force increases.
- DIN 54310 the mean measured force during a measuring path of 200 mm in N / 5cm specified.
- An essential factor for the thermal insulation ability of the insulation material according to the invention is the presence of numerous Cavities between the fibers.
- the air in the cavities significantly reduces the transport of Thermal energy from the side with the higher temperature to the side with the low temperature. This is of crucial importance Volume ratio between air and fiber in the nonwoven on the one hand and the Number of pores present, on the other hand, to cause cavitation enable.
- the proportion of air within the nonwoven is also for the insulation effect is important because the more air on the cavities, expressed in Volume ratio air to fiber is distributed, the better the thermal Insulating effect.
- the length and width are 100 mm, the height is the same as the thickness of the test specimen. It is important that the thickness is measured without compressing the test specimen. Depending on the thickness, this is done according to method B or C of EDANA 30.5-99.
- the specimen is dried to constant weight and weighed.
- 100% polyethylene terephthalate fibers were used, so that the density could be assumed to be 1.38 g / cm 3 .
- the acoustic effectiveness of the insulation material according to the invention in Comparison to a conventional insulation material is in the form of a Diagram.
- Airborne sound absorption depends on the angle of incidence, and in practice there is usually sound from all sides, which is also known as statistical sound incidence. In practice, the absorption over the reverberation time or determination of the equivalent absorption areas with and without the inserted insulation material. This results in the degree of absorption "Alpha”.
- the inventive Nonwoven fabric contain many voids, which reflect the sound waves within favor the nonwoven fabric of the invention.
- the sound is broken and optimally absorbed within the nonwoven fabric according to the invention.
Abstract
Description
Isolations-Materialien zur Absorption von Schallwellen und zur thermischen Isolierung, insbesondere für die Verwendung in der Automobilindustrie, sind im Stand der Technik bereits bekannt.Insulation materials for the absorption of sound waves and for thermal Insulation, especially for use in the automotive industry, is in the stand already known in technology.
WO 97/45581 offenbart ein mittels Meltblown-Technologie erzeugtes Isolier-Feinfaservlies zur Dämpfung von Schallwellen für den Einsatz im Fahrzeugbau, welches aus homo- und copolymerem Polypropylen besteht und dem ein phenolisches Stabilisierungsmittel zur Erhöhung der thermischen Resistenz beigemischt ist.WO 97/45581 discloses an insulating fine fiber fleece produced using meltblown technology for damping sound waves for use in vehicle construction, which consists of homo- and copolymeric polypropylene and the one phenolic stabilizer to increase thermal resistance is added.
Nachteilig wirkt sich allerdings aus, dass die mechanische Stabilität aufgrund niedriger Innenverfestigung nicht allzu hoch ist, somit ist ein derartiges Feinfaservlies nicht einfach zu konfektionieren, zu handeln und zu montieren.The disadvantage is that the mechanical stability is due to low internal consolidation is not too high, so such a fine fiber fleece not easy to assemble, trade and assemble.
Der Anteil des Stabilisierungsmittels muss hoch sein, damit eine bestmögliche Innverfestigung erzielt wird. Dadurch ist die Sortenreinheit nicht mehr gegeben. The proportion of the stabilizing agent must be high so that the best possible Internal consolidation is achieved. This means that the variety is no longer guaranteed.
Ferner sind schallabsorbierende und wärmeisolierende Bauteile aus dem EP 0683280 bekannt, die aus einem Verbund von einem Vlies aus vorwiegend Kunststoffasern - PET und PBT - mit einer aufkaschierten Polyesterfolie bestehen.Furthermore, sound absorbing and heat insulating components from the EP 0683280 known, predominantly from a composite of a nonwoven Plastic fibers - PET and PBT - with a laminated polyester film.
Beim Produktionsprozess ist somit ein zusätzlicher Arbeitsgang für das Aufbringen der Folie auf das Vlies erforderlich, wodurch sich das Herstellungsverfahren aufwendiger gestaltet und die Ausgangsstoffe für diese Bauteile höhere Kosten verursachen, außerdem ist die gewünschte Sortenreinheit nicht gegeben.In the production process there is therefore an additional step for the application the film on the fleece is required, which changes the manufacturing process designed more complex and the raw materials for these components higher costs cause, moreover, the desired purity is not given.
DE 19821532 beschreibt wärme- und schalldämmende Verkleidungen für die
Abdeckung der Stirnwand von Motorräumen oder im Bereich des Getriebetunnels
von Kraftfahrzeugen.
Diese sind zusammengesetzt aus einer motorseitigen Deckschicht, die von einem
Vlies aus PES- oder Glas- oder Kohlenstoff- oder Keramik- oder Mineralfasern
gebildet wird, einer duroplastischen Schaumstoffschicht aus Melaminharz, und einer
akustisch isolierenden Schicht aus Kunststoffschaum, Partikelverbundschaum oder
Faservlies aus nativen oder synthetischen Fasern.DE 19821532 describes heat and sound-insulating cladding for covering the end wall of engine compartments or in the area of the transmission tunnel of motor vehicles.
These are composed of an engine-side cover layer, which is formed from a fleece made of PES or glass or carbon or ceramic or mineral fibers, a thermosetting foam layer made of melamine resin, and an acoustically insulating layer made of plastic foam, composite particle foam or non-woven fabric made of native or synthetic fibers.
Die unterschiedliche Materialzusammensetzung solcher Verkleidungen ermöglicht keine wirtschaftliche Trennung der Rohstoffe und bietet keine umweltfreundliche Entsorgung nach dem Gebrauch.The different material composition of such cladding enables no economic separation of raw materials and does not offer environmentally friendly Disposal after use.
Zudem ist ein relativ aufwendiges Herstellungsverfahren zur Erzeugung von mehrschichtigen Verbundstoffen notwendig, welches außerdem gesundheitsbeeinträchtigend für das Produktionspersonal ist aufgrund der Verarbeitung karzinogener Stoffe, zum Beispiel Aminoxide oder Isocyanate.In addition, a relatively complex manufacturing process for the production of multilayer composites necessary, which is also harmful to health for the production staff is due to the processing carcinogenic substances, for example amine oxides or isocyanates.
DE 4206411 handelt von einem schalldämmendem Formteil für Verkleidungen an Kraftfahrzeugen mit einer Trägerschicht aus offenzelligem Polyurethan-Weichschaum, auf welche eine offene Deckschicht aus Polyestervliesstoff kaschiert ist, wobei der Polyurethan-Weichschaum mit einer duroplastischen Dispersion imprägniert ist. DE 4206411 deals with a sound-absorbing molded part for cladding Motor vehicles with a carrier layer made of open-celled flexible polyurethane foam, on which an open top layer of polyester nonwoven is laminated is, the flexible polyurethane foam with a thermosetting dispersion is impregnated.
Nachteilig ist die für die Insassen unangenehme Geruchsbelästigung durch Fogging bei Einsatz der Teile im Innenbereich der Fahrgastzelle bedingt durch die in den Produkten enthaltenen Chemikalien, z.B. durch die enthaltenen Schwerentflammbarkeitshilfsmittel.A disadvantage is the unpleasant odor nuisance caused by fogging for the occupants when using the parts in the interior of the passenger compartment due to the in the Chemicals contained in products, e.g. due to the contained flame retardants.
Aus DE 19708188 geht ein Schallschutzmaterial hervor, das aus Vliesstoffen aus thermoplastischen Fasern, beispielsweise aus Polyesterfasern hergestellt und in zwei Stufen durch einen mechanischen Verfestigungsprozess sowie einer anschliessenden Druck-/Wärmebehandlung verdichtet wird. Durch diese Verfestigung wird ein definierter Strömungswiderstandsbereich erreicht.DE 19708188 shows a soundproofing material made from nonwovens thermoplastic fibers, for example made of polyester fibers and in two Stages through a mechanical solidification process as well as one subsequent pressure / heat treatment is compressed. Through this Solidification a defined flow resistance range is reached.
Die so hergestellten Schallschutzmaterialien besitzen eine Dicke von nur 0,3 bis 3 mm und besitzen neben einem steifen Warencharakter deshalb ein entsprechend geringes thermisches Isolationsvermögen.The soundproofing materials produced in this way have a thickness of only 0.3 to 3 mm and, in addition to having a rigid product character, therefore have a corresponding low thermal insulation.
Der Erfinder hat hier nicht erkannt, dass eine leichte, bauschige Vliesstruktur Vorteile sowohl in Bezug auf Schallabsorption, als auch bezüglich der thermischen Isolation bringt.The inventor did not recognize here that a light, bulky fleece structure has advantages both in terms of sound absorption and in terms of thermal insulation brings.
Die Erfindung hat sich die Aufgabe gestellt, weg von den bekannten, steifen Isolations-Materialien zur Absorption von Schallwellen und zur thermischen Isolierung hin zu einem biegefähigen, weichen Schall- und Wärmeisolationsmaterial zu gelangen.The invention has set itself the task, away from the known, rigid Insulation materials for the absorption of sound waves and for thermal Insulation to a flexible, soft sound and heat insulation material to get.
Die Aufgabe ist erfindungsgemäß durch die Merkmale des Anspruchs 1 gelöst.The object is achieved by the features of
Anhand eines Ausführungsbeispiels wird die Erfindung nachstehend im Detail dargestellt.The invention is described in detail below using an exemplary embodiment shown.
Die verwendete Rohstoff-Mischung besteht zum Beispiel aus PET-Stapelfasern und
bikomponenten CoPET/PET-Schmelzklebefasern in folgendem Verhältnis
Die 2,2 dtex-Faser, die bei der später stattfindenden thermischen Verfestigung als Bindefaser fungiert, besitzt im Mantelbereich einen deutlich niedrigeren Schmelzpunkt als die beiden anderen Mischungskomponenten, die als Matrixfasern vorgesehen sind.The 2.2 dtex fiber that is used in the later thermal consolidation Binding fiber acts, has a significantly lower in the jacket area Melting point than the other two blend components that act as matrix fibers are provided.
Die homogen aufbereitete Mischung wird in Form einer Fasermatte einer Krempel zugeführt, um daraus ein Vlies zu bilden, welches mit Hilfe eines Horizontal-Legers auf das gewünschte Flächengewicht von beispielsweise 300 g/m2 getäfelt wird.The homogeneously prepared mixture is fed to a card in the form of a fiber mat in order to form a fleece therefrom, which is paneled to the desired basis weight of, for example, 300 g / m 2 using a horizontal layer.
Im Anschluss daran wird von einem rechtwinklig zum Legerband angeordneten Abzugsband abgenommen, es entsteht ein Vlies mit Kreuzlagen.Subsequently, one is arranged at right angles to the layer tape Removal tape removed, a fleece with cross layers is created.
Zur mechanischen Verfestigung passiert das Vlies eine Nadelmaschine.
Hierbei erfolgt eine beidseitige Vernadelung. Mit Hilfe des angewandten Verfahrens
und durch die spezielle Auswahl der eingesetzten Nadeln, die jeweils nur eine Kerbe
aufweisen, erhält das Vlies eine ausreichend hohe Innenverfestigung, wobei die
Weichheit und Dicke des erfindungsgemäßen Materials nicht nachteilig beeinträchtigt
wird.The fleece passes through a needle machine for mechanical consolidation.
In this case, needling is carried out on both sides. With the help of the method used and through the special selection of the needles used, which each have only one notch, the fleece is sufficiently internally consolidated, the softness and thickness of the material according to the invention not being adversely affected.
Der mechanischen Verfestigung direkt nachgeschaltet ist eine thermische Behandlung in einem Trockner, sodaß das so erhaltene, erfindungsgemäße Endprodukt die Eigenschaften Weichheit, Wärmeisolation und Schallabsorption aufweist.The mechanical consolidation is followed directly by a thermal one Treatment in a dryer, so that the thus obtained inventive The end product has the properties of softness, heat insulation and sound absorption having.
Dazu läuft das Vlies über ein der Nadelmaschine nachgeschaltetes Transportband in einen Siebtrommeltrockner ein, der zwei am Umfang perforierte und beheizte Siebtrommeln besitzt. Während der Trocknerpassage durchströmt heisse Luft mittels eines im Inneren der Siebtrommeln aufgebauten Unterdrucks das Vlies. For this purpose, the fleece runs on a conveyor belt downstream of the needle machine a sieve drum dryer which heated and perforated two on the circumference Has sieve drums. During the dryer passage, hot air flows through a vacuum built up inside the sieve drums.
Bei einer Siebtrommel-Temperatur von 160 °C erweicht die 2,2 dtex-Faser oberflächlich, wird binde- und klebefähig und bildet Bindungsstellen an den Kreuzungsstellen zwischen Binde- und Matrixfasern.At a sieve drum temperature of 160 ° C, the 2.2 dtex fiber softens superficial, becomes bindable and adhesive and forms binding sites on the Crossing points between binding and matrix fibers.
Entscheidend für das Herstellen des erfindungsgemäßen Isolationsmaterial ist die Tatsache, dass weder vor noch während des Kühlvorgangs kein zusätzliches Verdichten oder Verpressen des Vliesstoffes erfolgt. Die Fixierung des Vlieses geschieht also nur an den Bindungsstellen, die sich bereits während der Trocknerpassage ausgebildet haben.The decisive factor for the production of the insulation material according to the invention is The fact that neither before nor during the cooling process no additional The nonwoven fabric is compressed or compressed. The fixation of the fleece happens only at the binding sites that are already during the Have trained dryer passage.
Aufgrund des geringen Anteils an Schmelzklebefasern besitzt der auf diese Art und Weise hergestellte Vliesstoff eine ausgeprägte Weichheit.Due to the low proportion of hot-melt adhesive fibers, it has and Woven fabric produced in this way has a pronounced softness.
Diese Weichheit wirkt sich erfindungsgemäß zum einen positiv auf die akustischen Eigenschaften, zum anderen auf die thermische Isolationswirkung aus. Darüberhinaus passt sich das Material hervorragend an dreidimensionale Konturen, beispielsweise an Werkzeuge zur Herstellung von Fahrzeugwandungen oder -abdeckungen an,According to the invention, this softness has a positive effect on the acoustic Properties, on the other hand based on the thermal insulation effect. In addition, the material adapts perfectly to three-dimensional contours, for example tools for the production of vehicle walls or covers on,
Die messtechnische Beschreibung dieser Eigenschaft ist am Besten über die
sogenannte Biegesteifigkeit machbar. Für die nachstehenden Vergleichswerte wurde
eine Apparatur ähnlich der Prüfmethode ISO 9073-7 ("Determination of bending
length") verwendet. Abweichend von den dort genannten Vorgaben wurde mit einer
Teststreifenbreite von 50 mm gearbeitet und die überhängende Vlieslänge in mm
bestimmt. Diese wurde dann ins Verhältnis mit dem Flächengewicht des Prüflings
gesetzt, sodaß die gewichtsbezogene Biegesteifigkeit sich als Quotient nach der
unten stehenden Formel ergibt.
Zur messtechnischen Vereinfachung werden bei den obigen Größen, der überhängenden Vlieslänge und dem IST-Flächengewicht in der obigen Formel keine Einheiten verwendet.In order to simplify the measurement, the overhanging fleece length and the actual basis weight in the above formula none Units used.
Die Messwerte für die gewichtsbezogene Biegesteifigkeit in Längs- und Querrichtung aus der Tabelle 1 zeigen den deutlichen Unterschied beim Vergleich des erfindungsgemäßen Isolations-Materials mit einem konventionellem Isolations-Material. So ist es mit dem erfindungsgemäßen Vliesstoff wesentlich einfacher, eine Konturenanpassung zu erreichen, da der Vliesstoff im Vergleich zum Stand der Technik eine kleinere gewichtsbezogene Biegesteifigkeit aufweist, in sich weniger steif ist.The measured values for the weight-related bending stiffness in the longitudinal and transverse directions from Table 1 show the clear difference when comparing the insulation material according to the invention with a conventional insulation material. So it is much easier with the nonwoven according to the invention, a Contour adjustment to achieve because the nonwoven compared to the state of Technology has a smaller weight-related bending stiffness, less in itself is stiff.
Die nachstehende Tabelle 1 zeigt die sich ergebenden gewichtsbezogenen
Biegesteifigkeiten für verschiedene Flächengewichte, Muster 1 bis 3 eines
erfindungsgemäß hergestellten Vliesstoffs und dem nach dem Stand der Technik
hergestellten Muster 4, welches einen thermisch verfestigten, ungenadelten Vliesstoff
aus 0,7 dtex PES Matrixfaser zu 55% und 2,2 dtex CoPES/PES Bikomponenten-Schmelzfaser
zu 45% beschreibt.
Es zeigt sich eine deutlich geringere gewichtsbezogene Biegesteifigkeit gegenüber den bekannten Materialien nach dem Stand der Technik.A significantly lower weight-related bending stiffness is shown the known materials according to the prior art.
Für die Weiterverarbeitung des erfindungsgemäßen Vlieses ist es von Bedeutung, dass, neben der Weichheit, im Vlies auch eine Strukturfestigkeit gegeben ist. Diese Eigenschaft ist besonders entscheidend bei Einwirkung von mechanischer Beanspruchung, z. B. beim Handling, bei der Konfektion und bei der Montage. Erreicht wird dies im erfindungsgemäßen Vliesstoff durch die Kombination der beidseitigen Vernadelung und der anschließenden thermischen Verfestigung durch die SchmelzklebefasernFor the further processing of the fleece according to the invention, it is important that, in addition to the softness, the fleece also has a structural strength. This Property is particularly critical when exposed to mechanical Stress, e.g. B. in handling, assembly and assembly. This is achieved in the nonwoven fabric according to the invention by the combination of needling on both sides and the subsequent thermal solidification by the hot melt adhesive fibers
Um eine Messgröße für die Strukturfestigkeit zu bekommen wurde die Festigkeit gemessen, welche ein in seiner Dicke mittig gespaltener Vliesstoff einer weiteren Trennbewegung entgegensetzt.In order to get a measure of the structural strength, the strength measured, which is a non-woven fabric split in the middle in its thickness of another Separation movement opposed.
Dazu werden die beiden Enden des Prüflings in die Probenhalter einer Reißprüfmaschine, beispielsweise einer Zwick 1425, eingespannt. Der obere Probenhalter ist mittels einer Kraftmessdose an der beweglichen Traverse angebracht. Nach Testbeginn setzt sich die Traverse mit konstanter Geschwindigkeit nach oben in Bewegung, der Vliesstoff wird auseinandergetrennt, die an der Kraftmessdose anliegende Kraft steigt an. Für die Auswertung wird gemäß DIN 54310 die mittlere gemessene Kraft während eines Messweges von 200 mm in N/5cm angegeben.To do this, insert the two ends of the test specimen into the sample holder Tear testing machine, for example a Zwick 1425, clamped. The upper The sample holder is attached to the movable crossbar by means of a load cell appropriate. After the start of the test, the traverse settles at a constant speed Moving upwards, the nonwoven is separated, which on the Load cell applied force increases. For the evaluation according to DIN 54310 the mean measured force during a measuring path of 200 mm in N / 5cm specified.
Die Ergebnisse der Messwerte für die Trennfestigkeit des erfindungsgemäßen
Isolations-Materials aus Tabelle 2 bestätigen, dass der Vliesstoff trotz seiner
ausgeprägten Weichheit eine intensive Innenverfestigung aufweist. Dieses positive
Merkmal ist auf die Kombination der mechanischen mit der thermischen Verfestigung
zurückzuführen.
Ein wesentlicher Faktor für die Fähigkeit der thermischen Isolierung des erfindungsgemäßen Isolations-Materials ist das Vorhandensein von zahlreichen Hohlräumen zwischen den Fasern.An essential factor for the thermal insulation ability of the insulation material according to the invention is the presence of numerous Cavities between the fibers.
Die in den Hohlräumen befindliche Luft reduziert entscheidend den Transport von Wärmeenergie von der Seite mit der höheren Temperatur hin zur Seite mit der niederen Temperatur. Von ausschlaggebender Bedeutung dafür sind dabei das Volumen-Verhältnis zwischen Luft und Faserstoff im Vliesstoff einerseits und die Anzahl von vorhandenen Poren andererseits, um eine Hohlraumbildung zu ermöglichen.The air in the cavities significantly reduces the transport of Thermal energy from the side with the higher temperature to the side with the low temperature. This is of crucial importance Volume ratio between air and fiber in the nonwoven on the one hand and the Number of pores present, on the other hand, to cause cavitation enable.
Um möglichst zahlreiche Hohlräume zu bekommen, ist es bei einer gegebenen Vliesdicke sinnvoll den Titer der eingesetzten Fasern zu verringern. Hintergrund ist dabei die Überlegung, bei gleichem Flächengewicht und gegebener Dicke mittels feinerer Fasern mehr Strukturen innerhalb des Vlieses zu erzeugen, daher Hohlräume zu bilden.In order to get as many cavities as possible, it is a given Fleece thickness sensibly to reduce the titer of the fibers used. background is consider using the same basis weight and given thickness therefore, finer fibers create more structures within the fleece To form cavities.
Um nun eine Messgröße für die Faserfeinheit innerhalb des Vliesstoffes zu
bekommen, wurde der mittlere Fasertiter nach folgender Formel errechnet:
- A,B,C =
- der Prozentanteil einer Faserkompenente in der Mischung ist. Die Summe aus A,B und C ist 100.
Titer 1,2,3 =- Titer der jeweiligen Faserkomponente in dtex
- A, B, C =
- is the percentage of a fiber component in the blend. The sum of A, B and C is 100.
-
Titers 1,2,3 = - Titer of the respective fiber component in dtex
Für das vorgenannte Ausführungsbeispiel ergibt sich daher ein mittlerer Fasertiter von 1,3 dtex.An average fiber titer therefore results for the aforementioned embodiment of 1.3 dtex.
Neben dem mittleren Fasertiter ist auch der Luftanteil innerhalb des Vliesstoffes für die Isolationswirkung wichtig, denn je mehr Luft auf die Hohlräume, ausgedrückt in Volumen-Verhältnis Luft zu Faserstoff verteilt ist, um so besser ist die thermische Isolationswirkung.In addition to the average fiber titer, the proportion of air within the nonwoven is also for the insulation effect is important because the more air on the cavities, expressed in Volume ratio air to fiber is distributed, the better the thermal Insulating effect.
Ermittelt wird das Volumen-Verhältnis Luft zu Faserstoff, indem man das Volumen
eines Prüfkörpers aus dem erfindungsgemäßen Vlies nach der Formel
Im nächsten Schritt wird das Volumen der in dem Prüfkörper enthaltenen Fasern
nach der Formel
Mit dem so errechneten Faservolumen kann nunmehr das Luftvolumen innerhalb des
Prüfkörpers nach der Formel
Für das beschriebene Ausführungsbeispiel ist in Tabelle 3 die Ermittlung des
Verhältnisses von VLuft zu VFaser aufgeführt.
Für das Erreichen einer optimalen akustischen Absorptionswirkung war nun die Kombination der vorgenannten Eigenschaften, nämlich gewichtsbezogene Biegesteifigkeit, mittlerer Fasertiter und Verhältnis von VLuft zu VFaser die Ausgangsbasis.The combination of the aforementioned properties, namely weight-related bending stiffness, average fiber titer and ratio of V air to V fiber, was the starting point for achieving an optimal acoustic absorption effect.
Es zeigte sich, dass nur in der anspruchsgemäßen Kombination eine verbesserte, dem Stand der Technik deutlich überlegene Absorption erzielt wird.It was shown that an improved, absorption which is clearly superior to the prior art is achieved.
Die akustische Wirksamkeit des erfindungsgemäßen Isolations-Materials im Vergleich zu einem konventionellen Isolations-Material ist in Figur 1 in Form eines Diagramms dargestellt.The acoustic effectiveness of the insulation material according to the invention in Comparison to a conventional insulation material is in the form of a Diagram.
Aus dem Verlauf der Kurven für den Absorptionskoeffizienten in Abhängigkeit von der Frequenz ist klar zu erkennen, dass das erfindungsgemäße Isolations-Material mit der Bezeichnung "Sawasorb VP 14/01/65-300g/m2", gegenüber dem konventionellen Isolations-Material mit der Bezeichnung "Sawasorb 4225-300 g/m2" für jede angegebene Frequenz einen höheren Absorbtionskoeffizienten aufweist.From the course of the curves for the absorption coefficient as a function of frequency, it can be clearly seen that the insulation material according to the invention with the designation "Sawasorb VP 14/01 / 65-300g / m 2 ", compared to the conventional insulation material with the Designation "Sawasorb 4225-300 g / m 2 " has a higher absorption coefficient for each specified frequency.
Die in Figur 1 graphisch dargestellten Werte, die aus Tabelle 4 detailiert ersichtlich
sind, wurden im Rahmen einer Absorptionsmessung in der Alpha-Kabine ermittelt.
4225
300g/m2 10 mm Dicke
VP 14/01/65 300g/m2
10 mm Dicke
4225
300g / m 2 10mm thickness
VP 14/01/65 300g / m 2
10 mm thick
Diese Mess-Methode funktioniert nach folgendem Prinzip:
Die Luftschallabsorption ist abhängig vom Schalleinfallswinkel.In der Praxis ist meist
ein Schalleinfall von allen Seiten gegeben.Dies wird auch als statistischer
Schalleinfall bezeichnet.
In der Praxis wird die Absorption über die Nachhallzeit bzw. Bestimmung der
äquivalenten Absorptionsflächen mit und ohne
dem eingebrachten Dämmstoffen ermittelt.Hieraus ergibt sich der Absorptionsgrad "
Alpha". This measuring method works according to the following principle:
Airborne sound absorption depends on the angle of incidence, and in practice there is usually sound from all sides, which is also known as statistical sound incidence.
In practice, the absorption over the reverberation time or determination of the equivalent absorption areas with and without
the inserted insulation material. This results in the degree of absorption "Alpha".
Die Messung erfolgt in kleinvolumigen Kammern. ( kleiner Hallraum Volumen ca. 6 m3) => Alpha - KabineThe measurement takes place in small-volume chambers. (small reverberation room volume approx. 6 m 3 ) => Alpha cabin
Durch die ausgeprägte Weichheit des erfindungsgemäß hergestellten Vliesstoffes, welche durch Verwendung nur geringer Anteile an Schmelzfasern erst ermöglicht wird, ist die Oberfläche dergestalt verfestigt, dass auftreffende Schallwellen nur einem geringen Anteil reflektiert werden, der Großteil kann in die Vliesstruktur eindringen.Due to the pronounced softness of the nonwoven fabric produced according to the invention, which is only made possible by using only a small proportion of melt fibers the surface is solidified in such a way that sound waves only a small proportion can be reflected, the majority can be found in the fleece structure penetration.
Entgegen den Materialien des Stands der Technik sind bei dem erfindungsgemäßen Vliesstoff viele Hohlräume enthalten, welche Reflektion der Schallwellen innerhalb des erfindungsgemäßen Vliesstoffes begünstigen. Der Schall wird gebrochen und innerhalb des erfindungsgemäßen Vliesstoffes optimal absorbiert.Contrary to the materials of the prior art, the inventive Nonwoven fabric contain many voids, which reflect the sound waves within favor the nonwoven fabric of the invention. The sound is broken and optimally absorbed within the nonwoven fabric according to the invention.
Claims (9)
dadurch gekennzeichnet,
characterized,
dadurch gekennzeichnet, dass der mittlere Fasertiter der den Vliesstoff bildenden Fasern zwischen 0,3 und 1,5 dtex liegt. Insulation material according to claim 1,
characterized in that the average fiber titer of the fibers forming the nonwoven is between 0.3 and 1.5 dtex.
dadurch gekennzeichnet, dass
die den Vliesstoff bildenden Stapelfasern und Schmelzklebefasern polymereinheitlich zusammengesetzt sind.Insulation material according to one of claims 1,
characterized in that
the staple fibers and hot-melt adhesive fibers forming the nonwoven are composed of a single polymer.
dadurch gekennzeichnet, dass
die den Vliesstoff bildenden Stapelfasern und Schmelzklebefasern aus der Gruppe der Polyethylenterephthalate bestehen.Insulation material according to one of claims 1,
characterized in that
the staple fibers and hot-melt adhesive fibers forming the nonwoven consist of the group of polyethylene terephthalates.
dadurch gekennzeichnet, dass
die den Vliesstoff bildenden Stapelfasern und Schmelzklebefasern aus der Gruppe der Polyolefine bestehen.Insulation material according to one of claims 1,
characterized in that
the staple fibers and hot-melt adhesive fibers forming the nonwoven consist of the group of polyolefins.
dadurch gekennzeichnet, dass die den Vliesstoff bildenden Stapelfasern als Mischung aus mindestens einer ersten und einer zweiten polymereinheitlichen Komponente vorliegen. Insulation material according to one of claims 1,
characterized in that the staple fibers forming the nonwoven are present as a mixture of at least a first and a second polymer-uniform component.
dadurch gekennzeichnet, dass der Gehalt an thermoplastischen bikomponenten Schmelzklebefasern 15 Gewichtsprozent nicht übersteigt.Insulation material according to claim 1,
characterized in that the content of thermoplastic bicomponent hot-melt adhesive fibers does not exceed 15 percent by weight.
dadurch gekennzeichnet, dass der Vliesstoff ein Flächengewicht von 200 g/m2 bis 800g/m2 aufweist.Insulation material according to claim 1,
characterized in that the nonwoven fabric has a basis weight of 200 g / m 2 to 800g / m 2.
dadurch gekennzeichnet, dass der Vliesstoff mechanisch und thermisch ohne wesentliche Veränderung des Querschnitts verfestigt ist.Insulation material for absorbing sound waves and for thermal insulation, consisting of thermoplastic staple fibers as matrix fibers and mechanically and thermally bonded nonwoven containing thermoplastic hot melt adhesive fibers,
characterized in that the nonwoven fabric is mechanically and thermally bonded without significantly changing the cross-section.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10163576A DE10163576B4 (en) | 2001-12-21 | 2001-12-21 | Insulation material |
| DE10163576 | 2001-12-21 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1321554A1 true EP1321554A1 (en) | 2003-06-25 |
| EP1321554B1 EP1321554B1 (en) | 2011-06-29 |
Family
ID=7710588
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP02022994A Expired - Lifetime EP1321554B1 (en) | 2001-12-21 | 2002-10-15 | Insulation material |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP1321554B1 (en) |
| AT (1) | ATE514808T1 (en) |
| DE (1) | DE10163576B4 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10331085C5 (en) * | 2003-07-09 | 2008-02-28 | Rehau Ag + Co. | Air guide element for a motor vehicle |
| US7500541B2 (en) | 2004-09-30 | 2009-03-10 | Kimberly-Clark Worldwide, Inc. | Acoustic material with liquid repellency |
| EP2910672A1 (en) * | 2014-02-12 | 2015-08-26 | Sandler AG | Sarking board |
| EP4008823A1 (en) * | 2020-12-04 | 2022-06-08 | Carl Freudenberg KG | Embossed nonwoven fabric for vehicle interior |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102017002552A1 (en) | 2017-03-17 | 2018-09-20 | Carl Freudenberg Kg | Sound-absorbing textile composite |
| EP3246442B1 (en) | 2017-03-17 | 2019-11-13 | Carl Freudenberg KG | Sound absorbing textile composite |
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| US4946738A (en) * | 1987-05-22 | 1990-08-07 | Guardian Industries Corp. | Non-woven fibrous product |
| DE4206411A1 (en) | 1992-02-29 | 1993-09-02 | Perstorp Components Gmbh | Noise deadening component - comprises open-cell polyurethane foam impregnated with thermosetting dispersion and covered with outer fibrous layer |
| US5298694A (en) * | 1993-01-21 | 1994-03-29 | Minnesota Mining And Manufacturing Company | Acoustical insulating web |
| EP0606844A1 (en) * | 1993-01-14 | 1994-07-20 | Fritz Doppelmayer | Insulating material |
| EP0683280A1 (en) | 1994-05-17 | 1995-11-22 | M. Faist GmbH & Co. KG | Thermal and acoustic insulating component |
| WO1997045581A1 (en) | 1996-05-29 | 1997-12-04 | Minnesota Mining And Manufacturing Company | Thermally stable acoustical insulation |
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| EP1074653A2 (en) * | 1999-08-06 | 2001-02-07 | Tex Tech Industries, Inc. | High performance insulations and methods of manufacturing the same |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0833973B1 (en) * | 1995-06-23 | 2000-03-15 | Minnesota Mining And Manufacturing Company | Method of attenuating sound, and acoustical insulation therefor |
-
2001
- 2001-12-21 DE DE10163576A patent/DE10163576B4/en not_active Expired - Fee Related
-
2002
- 2002-10-15 EP EP02022994A patent/EP1321554B1/en not_active Expired - Lifetime
- 2002-10-15 AT AT02022994T patent/ATE514808T1/en active
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|---|---|---|---|---|
| US4946738A (en) * | 1987-05-22 | 1990-08-07 | Guardian Industries Corp. | Non-woven fibrous product |
| DE4206411A1 (en) | 1992-02-29 | 1993-09-02 | Perstorp Components Gmbh | Noise deadening component - comprises open-cell polyurethane foam impregnated with thermosetting dispersion and covered with outer fibrous layer |
| EP0606844A1 (en) * | 1993-01-14 | 1994-07-20 | Fritz Doppelmayer | Insulating material |
| US5298694A (en) * | 1993-01-21 | 1994-03-29 | Minnesota Mining And Manufacturing Company | Acoustical insulating web |
| EP0683280A1 (en) | 1994-05-17 | 1995-11-22 | M. Faist GmbH & Co. KG | Thermal and acoustic insulating component |
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| DE19708188A1 (en) | 1997-02-28 | 1998-09-03 | Lohmann Gmbh & Co Kg | Soundproofing material and its use |
| DE19821532A1 (en) | 1998-05-14 | 1999-11-25 | Hp Chemie Pelzer Res & Dev | Lower cost, heat and noise absorbing shroud, manufacturing method and use of shroud in an engine vehicle compartment |
| EP1074653A2 (en) * | 1999-08-06 | 2001-02-07 | Tex Tech Industries, Inc. | High performance insulations and methods of manufacturing the same |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10331085C5 (en) * | 2003-07-09 | 2008-02-28 | Rehau Ag + Co. | Air guide element for a motor vehicle |
| US7500541B2 (en) | 2004-09-30 | 2009-03-10 | Kimberly-Clark Worldwide, Inc. | Acoustic material with liquid repellency |
| EP2910672A1 (en) * | 2014-02-12 | 2015-08-26 | Sandler AG | Sarking board |
| EP4008823A1 (en) * | 2020-12-04 | 2022-06-08 | Carl Freudenberg KG | Embossed nonwoven fabric for vehicle interior |
Also Published As
| Publication number | Publication date |
|---|---|
| EP1321554B1 (en) | 2011-06-29 |
| DE10163576B4 (en) | 2006-07-20 |
| DE10163576A1 (en) | 2003-07-17 |
| ATE514808T1 (en) | 2011-07-15 |
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