EP1349996B1 - Sound insulation mat for floor coverings, and method for the production thereof - Google Patents

Sound insulation mat for floor coverings, and method for the production thereof Download PDF

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Publication number
EP1349996B1
EP1349996B1 EP02708268A EP02708268A EP1349996B1 EP 1349996 B1 EP1349996 B1 EP 1349996B1 EP 02708268 A EP02708268 A EP 02708268A EP 02708268 A EP02708268 A EP 02708268A EP 1349996 B1 EP1349996 B1 EP 1349996B1
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EP
European Patent Office
Prior art keywords
mat
fibers
sound insulation
binder
density
Prior art date
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Expired - Lifetime
Application number
EP02708268A
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German (de)
French (fr)
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EP1349996A1 (en
Inventor
Martin Steinwender
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Fritz Egger GmbH and Co OG
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Fritz Egger GmbH and Co OG
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Publication of EP1349996A1 publication Critical patent/EP1349996A1/en
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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
    • D04H1/541—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
    • 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
    • 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
    • D04H1/5418—Mixed fibres, e.g. at least two chemically different fibres or fibre blends
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F15/00—Flooring
    • E04F15/18—Separately-laid insulating layers; Other additional insulating measures; Floating floors
    • E04F15/20—Separately-laid insulating layers; Other additional insulating measures; Floating floors for sound insulation
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F15/00—Flooring
    • E04F15/18—Separately-laid insulating layers; Other additional insulating measures; Floating floors
    • E04F15/20—Separately-laid insulating layers; Other additional insulating measures; Floating floors for sound insulation
    • E04F15/203—Separately-laid layers for sound insulation
    • 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

Definitions

  • the invention relates to a sound insulation mat for floor coverings, especially hard floors such as parquet floors or laminate flooring, which is both impact sound insulation as well as room sound insulation.
  • EP 1 001 111 A2 discloses a mat for sound insulation with a thickness of 3-5 mm, a basis weight of 2-3.5 kg / m 2 , the mat consisting of an adhesive based on polyurethane (PU) and small rubber parts.
  • PU polyurethane
  • PE Polyethylene
  • EP 0 864 712 A2 describes a mat consisting of a flexible, thermoplastic material with viscoelastic behavior with a thickness of 1-3 mm and a minimum density of 2 g / cm 3 .
  • EVA ethylene vinyl acetate
  • Fillers with a density greater than 2.5 g / cm 3 are provided to adjust the mat density.
  • the mat consists of adhesive and fillers. Mineral components such as lime, heavy spar and barium sulfate are disclosed as fillers.
  • the adhesive can be, for example, polyethylene (PE).
  • the impact sound insulation is said to be one Sound transmission to the underlying substructure, e.g. Screed, and subsequently on the reduce the space below. That's the way it is understandable that for this purpose flexible mats with a low density are advantageous.
  • polyethylene cushioning film e.g. with a thickness of 2 to 5 mm
  • cork mats wood fiber insulation boards
  • the Impact sound insulation is intended to prevent the flooring has direct contact with the substructure, thus forms a sound bridge.
  • bumps should of the subsurface.
  • Room sound is understood to be the emission or reverberation of sound energy into the room located above the floor covering.
  • energy is transferred to the floor by walking on it, which can be passed on in the floor and can thus be radiated as sound from the entire floor area into the room.
  • Energy can also act on the floor in the form of sound waves, such as music or conversations, which can be reflected back into the room by reflection.
  • the damping effect of the floor covering determines the ratio of incident energy to sound energy.
  • the aim of room sound insulation is now to influence this damping effect in a suitable combination of flooring and insulation mat.
  • the density and the viscoelastic behavior of both are the main influencing factors.
  • Hard floor coverings, such as a laminate floor have a density of approx. 1000 kg / m 3 and a covering thickness between 5 and 14 mm.
  • the sound insulation mat should now have a density that is well above 1000 kg / m 3 and also has a low modulus of elasticity.
  • the invention is therefore based on the technical problem a sound insulation mat and a process for its manufacture specify with which both the impact sound as room sound insulation can also be improved.
  • the sound insulation mat has a mat layer, which has a mat top and a mat bottom, the mat layer of natural raw material fibers, at least has a binder and high density particles.
  • the high-density particles are inside the mat layer arranged inhomogeneously distributed and generate one from the bottom of the mat to the top of the mat increasing density distribution. Because of the strongly inhomogeneous On the one hand, the density profile is good impact sound insulation and on the other hand achieves good room sound insulation.
  • the mat can be a simple thermal or material disposal after their use. This ideally applies even to a common one Disposal with the floor covering even in the event that this is a wood-based floor covering, e.g. Parquet flooring or laminate flooring.
  • the inhomogeneous density profile preferably corresponds to one continuous function, d. H. there are no leaps in density and the density increases with the exception of the edge areas steadily from the underside of the mat to the top of the mat.
  • the inhomogeneous density profile is preferably characterized by the following values.
  • the density of the mat layer is greater than 300 kg / m 3 on the underside of the mat and greater than 1500 kg / m 3 on the underside of the mat.
  • a high material density suitable for room sound insulation is thus present on the top of the mat facing the floor covering.
  • the sound insulation mat has a lower material density in the area of the underside of the mat, which faces the substructure, for example the screed, so that the impact sound insulation is improved.
  • the natural raw material fibers consist of wood fibers, flax fibers, Hemp fibers, sisal fibers, coconut fibers or fibers from other natural raw materials.
  • the properties of the wood fibers correspond to those such as those used in the manufacture of MDF boards (medium density fibreboard) or HDF boards (Hardboard) are known.
  • the fibers can e.g. obtained from a thermo-mechanical digestion from wood become.
  • a production from waste materials such as Chipboard, fiberboard, OSB (Oriented Strand Board) or other wood-based materials is also conceivable and a thermo-mechanical digestion for the Manufacturing the fibers is not mandatory.
  • wood fiber can also be other natural fibers, e.g. of annual plants like Flax, hemp, sisal or coconut can be used.
  • Flax, hemp, sisal or coconut can be used.
  • the defibration for this is much easier, it is usually a purely mechanical one Process.
  • Wood fibers are due to their fiber diameter and their The length of the fiber is only suitable to a limited extent Form soundproofing mat.
  • the wood fibers after their production as a binder so-called binding fibers mixed in, which is a good one To ensure matting of the wood fibers.
  • the binding fibers can e.g. made of synthetic fibers (e.g. polyester fibers), from natural fibers (e.g. cellulose fibers) or from natural fibers (cotton, sisal, hemp, flax, coconut) consist.
  • the proportion of binding fibers is dependent on their fiber length and fiber diameter between 1 and 20 percent by weight based on dry wood pulp.
  • the binding fiber length Depending on the fiber properties, the Finished mat thickness and the possibilities of the mat forming system are in the range between 0.5 and 10 cm, the Binding fiber diameter can be between 2 and 10 dtex. However, longer or shorter, thicker ones can also be used or thinner binder fibers may be suitable.
  • the unit 1 dtex corresponds to an average inside diameter, which adjusts itself when the fiber is weighing of 1 gram has a length of 10,000 meters.
  • Adhesives are suitable as adhesives with thermosetting properties, e.g. amino resins, Phenoplasts, acrylates, with thermoplastic Properties such as Polyethylene, polyvinyl acetate, polypropylene, or with elastomeric properties, such as e.g. based on polyurethane, rubber, silicone. Natural adhesives, e.g. based on starch equally conceivable. A mixture of different adhesives to optimize the mat properties is also possible.
  • the proportion of adhesive based on the dry wood mass is between 0.5 depending on the adhesive and 30 weight percent.
  • Binding fibers adhesives or a combination thereof can be used. For example, adding an adhesive the wood fibers are completely dispensed with, if the required binding is made via the binding fiber.
  • the high-density particles have a specific weight of greater than 2000 kg / m 3 .
  • the particles can consist of a mineral substance such as chalk, quartz sand, barium sulfate, heavy spar, wood ash or the like.
  • the high-density particles made of metals e.g. Aluminum, iron or the like exist.
  • metals e.g. Aluminum, iron or the like.
  • the high density particles are said to be during manufacture the sound insulation mat penetrate into it and, if at all, only to a small extent directly on the Mat surface come to rest.
  • the ideal diameter or the grain size spectrum depends on the used Natural raw material fibers (wood fibers, natural fibers, binding fibers), the binding fibers used and / or the used Adhesives or the mixture of adhesives used from.
  • the penetration behavior of the high-density particles in the mat can also be coordinated with a specific one Grain size spectrum or also over the elongated or spherical geometry of the small particles influenced become.
  • quartz sand as a high density fabric e.g. an average grain size between 0.1 and 0.5, in particular 0.2 to 0.4 mm, was found to be particularly favorable.
  • Weight fraction in the range between 30 to 300 weight percent based on the dry matter of the natural raw material fibers.
  • the wood fibers and binding fibers are therefore in one first processing step into a, preferably homogeneous, Mix in the desired ratio and add a loose mat.
  • the mat laying can either mechanically or in the Airlay process. The the latter procedure is used also for mat formation of non-woven mats and has also been used for Proven production of the mat according to the invention.
  • the supply of the adhesive - if necessary - can be done during mat production. application techniques depending on the nature of the adhesive (solid or liquid) spray systems, litter box systems, Disc systems etc.
  • the mat can then be solidified mechanically (for example by needling) or, if a thermoplastic adhesive is used, by the action of heat to a predetermined degree, with or without prior needling.
  • the mat flows through an oven in which hot air flows through the mat between wire grids and is passed through pairs of calibration rollers.
  • the mat is cooled with cold air under the melting area of the thermoplastic adhesive in order to bring the mat into a dimensionally stable state.
  • the mat can also be heated, for example, by infrared radiation, microwave energy or high-frequency energy.
  • ionizing radiation eg electron radiation
  • Mats produced in this way have a density between 70 and 200 kg / m 3 and a basis weight between 500 and 3000 g / m 2 .
  • the high density is sprinkled in Particle. These are sprinkled on the mat surface and e.g. by shaking from the top into the Depth of the mat introduced. Remaining on the surface Excess particles can, if necessary, e.g. removed by suction or other mechanisms become.
  • the mat is actually solidified through the action of heat and pressure.
  • it is advantageous to acting temperature clearly on the mat top to choose higher than on the mat underside.
  • the press plate on the underside of the mat can also be advantageous, the press plate on the underside of the mat to cool.
  • the acting temperature and the Press time must be chosen so that the used Adhesives can react.
  • the acting temperature on the mat top is usually between 100 and 200 ° C, usually on the underside of the mat below 100 ° C.
  • the individual manufacturing steps can be carried out immediately in a row. But it is also conceivable that separate manufacturing steps, temporally and locally, perform.
  • the production of an endless mat up to the pressing is certainly to be aimed for, but one cyclical production is also possible.
  • the pressing can either be cyclical for given mat formats or in a continuous manufacturing process e.g. with a double belt press or a calender system.
  • the inhomogeneous density profile is therefore on the one hand by the one-sided scattering of high-density fabrics achieved.
  • the last step in the process solidification taking place due to the unequal action from warmth to the top and bottom of the mat even the inhomogeneous distribution of the high-density particles can be achieved.
  • the natural raw material fibers especially the wood fibers, can already during the fiber production with an adhesive in the blow-line process.
  • An afterthought Application of adhesives after fiber drying is also conceivable and can be in front of or in In the course of mat formation.
  • a required application of adhesives in particular glueing of the flax fibers, hemp fibers, Sisal fibers, coconut fibers or fibers from other natural raw materials can also during mat formation or beforehand in suitable gluing units.
  • the adhesives can be in solid form, e.g. as a powder, or in liquid form, e.g. as a solution, dispersion or Emulsion applied to the fibers to be loaded become.
  • Binding fibers and adhesive is an application of the adhesive on the binding fiber itself before the mat is formed possible.
  • the adhesive can also be used in the course of mat formation either on the wood fiber and / or on the binding fiber be applied.
  • the overall task of the adhesive is the fiber composite to solidify in such a way that a defined thickness of the sound insulation mat and the particles of high density embedded in the fibers are thus fixed are that during further processing and Laying the mat or during use Can’t remove particles from the mat.
  • Fig. 1 shows a schematic representation of the Structural structure of a sound insulation mat according to the invention 2.
  • This has a mat layer 4, which represents the actual material of the sound insulation mat 2.
  • the Mat layer 4 has a mat top 6 and a Mat underside 8 on.
  • When used as a sound insulation mat 2 is on the mat top 6 of the flooring (not shown) and on the mat bottom 8 the substructure of the floor (not shown).
  • the mat layer 4 essentially has components Natural raw material fibers 10, a binder 12 (not shown structured) and high-density particles 14.
  • the particles 14 are within the mat layer 4 arranged inhomogeneously distributed and generate one rising from the mat bottom 8 to the mat top 6 Density distribution on. 1 shows that the frequency distribution of the occurrence of the particles 14 in the area of the mat top 6 significantly larger than in middle area of the mat layer 4 and as in the area the underside of the mat 8. Otherwise the natural raw material fibers 10 and the binder 12 substantially homogeneous are distributed, results within the mat layer 4 the inhomogeneous density distribution.
  • Fig. 2 shows an example of such a density profile of such an insulation mat.
  • the density in the area of the underside of the mat - i.e. the side facing the substructure when installed - is around 300 kg / m 3 .
  • Wood fibers or natural fibers with such a density are hardly consolidated with each other, so that the function of impact sound insulation can be very well fulfilled.
  • the mat can still be deformed to a certain extent, which compensates for unevenness in the substructure.
  • the density of the mat then increases steadily towards the top of the mat - in the exemplary case up to a density of approx. 2400 kg / m 3 just below the top of the mat.
  • the increase in density is achieved on the one hand by the one-sided incorporation of high-density substances in the fiber matrix, and on the other hand by the production parameters of pressure and temperature.
  • Example 1 The production of such an insulation mat is described in Example 1 below.
  • 100 parts by weight of unglued wood fibers are mixed homogeneously with 1.0 part by weight of polyester fiber.
  • the polyester fiber consists of a core fiber with a melting point above 160 ° C and a sheathing made of polyester with a melting range between 110 and 130 ° C.
  • the polyester fiber has a staple length of approx. 50mm and a fiber diameter of approx. 5 dtex.
  • the fiber mixture of wood fiber and binder fiber is formed into an endless mat in the airlay process and then needled to stabilize it.
  • the intermediate product thus obtained has a weight per unit area of approx. 1500 g / m 2 and a thickness of approx. 12 mm.
  • a soundproofing mat with a thickness of approx. 3 mm is obtained is very flexible and has a density profile corresponding to that Figure 1 has.
  • the mat results in the full area on the Glued underside of a laminate floor board effective reduction of impact and room noise levels.
  • a sound insulation mat is produced as in example 1.
  • the mat is thermally consolidated, so-called thermobonding.
  • Hot air at a temperature of around 180 ° C is passed through the mat in an oven and the thickness is set using calibration roller pairs.
  • the result is an intermediate product with a basis weight of approx. 2500 g / m 2 .
  • quartz sand is sprinkled in as described in Example 1 and the mat is compacted with analog press parameters.
  • the density profile of the mat is almost identical, as are the acoustic properties.
  • Example 3 describes the production of a sound insulation mat consisting of glued wood fibers and unglued Binding fibers based on cellulose fibers.
  • 100 parts by weight the glued wood fibers are with 10 parts by weight Cellulose fibers mixed homogeneously and in the air-lay process shaped into a mat.
  • the cellulose fibers have one Stack length of approx. 60 mm and have a fiber diameter of approx. 7 dtex.
  • the mat becomes a solidification needled.
  • Example 4 describes the production of a mat without the use of an adhesive.
  • 30 parts by weight of hemp fibers (average length approx. 20 mm) are mixed with 70 parts by weight of wood fibers and 10 parts by weight of a binding fiber (cellulose fiber, length approx. 50 mm, fiber diameter approx. 7 dtex) and a loose mat is produced using the airlay process with a basis weight of 3000 g / m 2 100 parts by weight of quartz sand with a grain diameter between 0.2 and 0.4 mm are evenly distributed on the top of the mat and introduced into the depth of the mat by shaking.
  • a fine fiber fleece based on cellulose fiber is placed on the top side, which prevents the quartz particles from loosening too much when needling.
  • the mat produced in this way is then solidified by intensive needling.
  • the thickness of the mat is approx. 8 mm.
  • the density in the upper area of the mat is approx. 1600 kg / m 3 .

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Multimedia (AREA)
  • Acoustics & Sound (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Floor Finish (AREA)
  • Laminated Bodies (AREA)
  • Building Environments (AREA)
  • Dry Formation Of Fiberboard And The Like (AREA)
  • Soundproofing, Sound Blocking, And Sound Damping (AREA)

Abstract

The high-density particles (14) are not distributed homogeneously inside the mat layer (4). The density of the distribution increases from the mat underside (8) to the top side (6). The density of the mat layer exceeds 300 g/m3> on the underside and 1500 kg/m3> on the top side.

Description

Die Erfindung betrifft eine Schalldämmmatte für Bodenbeläge, insbesondere harte Fußböden wie z.B. Parkettböden oder Laminatfußböden, die sowohl eine Trittschalldämmung als auch eine Raumschalldämmung bewirkt.The invention relates to a sound insulation mat for floor coverings, especially hard floors such as parquet floors or laminate flooring, which is both impact sound insulation as well as room sound insulation.

Schalldämmmatten für harte Bodenbeläge sind hinreichlich bekannt. So beschreibt die CH 245 004 eine Holzfasermatte als schall- und wärmedämmendes Element. Ebenso werden auch Kautschuk, Kork, Gewebe aus organischen und anorganischen Stoffen als geeignete Stoffe zur Dämmung erwähnt.Soundproof mats for hard floor coverings are sufficient known. This is how CH 245 004 describes a wood fiber mat as a sound and heat insulating element. Likewise also rubber, cork, fabrics made of organic and inorganic Substances mentioned as suitable substances for insulation.

Die EP 1 001 111 A2 offenbart eine Matte zur Schalldämmung mit einer Dicke von 3 - 5mm, einem Flächengewicht von 2 - 3,5 kg/m2 , wobei die Matte aus einem Kleber auf Polyurethanbasis (PU) und Gummikleinteilen besteht. Als Klebemittel der Gummikleinteile ist Polyethylen (PE) angeführt.EP 1 001 111 A2 discloses a mat for sound insulation with a thickness of 3-5 mm, a basis weight of 2-3.5 kg / m 2 , the mat consisting of an adhesive based on polyurethane (PU) and small rubber parts. Polyethylene (PE) is listed as an adhesive for the small rubber parts.

Eine Matte bestehend aus einem flexiblen, thermoplastischen Kunststoff mit viskoelastischem Verhalten mit einer Dicke von 1 - 3 mm und einer Mindestdichte von 2 g/cm3 beschreibt die EP 0 864 712 A2. Als thermoplastischer Kunststoff kann z.B. EVA (Ethylenvinylacetat) verwendet werden. Zum Einstellen der Mattendichte sind Füllstoffe mit einer Dichte größer als 2,5 g/cm3 vorgesehen. EP 0 864 712 A2 describes a mat consisting of a flexible, thermoplastic material with viscoelastic behavior with a thickness of 1-3 mm and a minimum density of 2 g / cm 3 . For example, EVA (ethylene vinyl acetate) can be used as the thermoplastic. Fillers with a density greater than 2.5 g / cm 3 are provided to adjust the mat density.

Die DE 299 08 733 Ul beschreibt eine Matte mit einer Dicke von 1 - 6mm und einem Flächengewicht zwischen 0,8 - 1,95 kg/m2 je mm Schichtstärke. Die Matte besteht aus Klebemittel und Füllstoffen. Als Füllstoffe werden mineralische Komponenten wie Kalk, Schwerspat und Bariumsulfat offenbart. Das Klebemittel kann z.B. Polyethylen (PE) sein.DE 299 08 733 U1 describes a mat with a thickness of 1-6 mm and a weight per unit area between 0.8 and 1.95 kg / m 2 per mm of layer thickness. The mat consists of adhesive and fillers. Mineral components such as lime, heavy spar and barium sulfate are disclosed as fillers. The adhesive can be, for example, polyethylene (PE).

Weitere Schalldämmatten sind aus DE-A-100 17202 oder US-A-5 684 278 bekannt.Further sound insulation mats are from DE-A-100 17202 or US-A-5,684,278.

Prinzipiell gibt es 2 unterschiedliche Wirkungsprinzipien der Schalldämmung. Die Trittschalldämmung soll eine Schallübertragung auf die darunter befindliche Unterkonstruktion, z.B. Estrich, und in weiterer Folge auf die darunter liegenden Räumlichkeiten vermindern. So ist es verständlich, dass für diesen Zweck biegeweiche Matten mit einer geringen Dichte vorteilhaft sind. In der Praxis werden dafür z.B. extrudierte, Polyethylen-Polsterfolien, z.B. mit einer Dicke von 2 bis 5 mm, Korkmatten, Holzfaserdämmplatten, Matten bestehend aus Textilien, Wellkartonmatten oder aus Kombinationen daraus verwendet. Die Trittschalldämmung soll verhindern, dass der Bodenbelag einen direkten Kontakt zur Unterkonstruktion aufweist, also eine Schallbrücke bildet. Zudem sollen Unebenheiten des Untergrundes ausgeglichen werden.In principle there are 2 different principles of action the sound insulation. The impact sound insulation is said to be one Sound transmission to the underlying substructure, e.g. Screed, and subsequently on the reduce the space below. That's the way it is understandable that for this purpose flexible mats with a low density are advantageous. In practice are e.g. extruded, polyethylene cushioning film, e.g. with a thickness of 2 to 5 mm, cork mats, wood fiber insulation boards, Mats consisting of textiles, corrugated cardboard mats or combinations thereof. The Impact sound insulation is intended to prevent the flooring has direct contact with the substructure, thus forms a sound bridge. In addition, bumps should of the subsurface.

Unter Raumschall wird das Ab- bzw. Rückstrahlen von Schallenergie in den über dem Bodenbelag befindlichen Raum verstanden. Einerseits wird Energie durch das Begehen des Bodens auf diesen übertragen, welche im Boden weitergeleitet werden kann und so von der gesamten Bodenfläche in den Raum als Schall gestrahlt werden kann. Energie kann auf den Boden aber auch in Form von auftreffenden Schallwellen einwirken, z.B. Musik oder Gespräche, die durch Reflexion in den Raum zurückgestrahlt werden kann. Die Dämpfwirkung des Bodenbelages bestimmt das Verhältnis von auftreffender Energie und abgegebener Schallenergie. Ziel einer Raumschalldämmung ist es nun, diese Dämpfwirkung in einer geeigneten Kombination von Bodenbelag und Dämmmatte günstig zu beeinflussen. Die Dichte und das viskoelastische Verhalten beider sind die wesentlichen Einflussgrößen. Harte Bodenbeläge, wie z.B. ein Laminatfußboden, weisen eine Dichte von ca. 1000 kg/m3 und einer Belagsdicke zwischen 5 und 14 mm auf. Die Schalldämmmatte soll nun eine Dichte aufweisen, die deutlich über 1000 kg/m3 liegt und zudem aber über einen geringen Elastizitätsmodul verfügt.Room sound is understood to be the emission or reverberation of sound energy into the room located above the floor covering. On the one hand, energy is transferred to the floor by walking on it, which can be passed on in the floor and can thus be radiated as sound from the entire floor area into the room. Energy can also act on the floor in the form of sound waves, such as music or conversations, which can be reflected back into the room by reflection. The damping effect of the floor covering determines the ratio of incident energy to sound energy. The aim of room sound insulation is now to influence this damping effect in a suitable combination of flooring and insulation mat. The density and the viscoelastic behavior of both are the main influencing factors. Hard floor coverings, such as a laminate floor, have a density of approx. 1000 kg / m 3 and a covering thickness between 5 and 14 mm. The sound insulation mat should now have a density that is well above 1000 kg / m 3 and also has a low modulus of elasticity.

Hinsichtlich des Tritt- und Raumschalls hat sich gezeigt, dass eine vom Menschen subjektiv spürbare Verbesserung dann erreicht wird, wenn eine wirkungsvolle Verringerung des Schallpegels im Frequenzbereich des Resonanzbereichs des menschlichen Ohrs erfolgt. Dieser liegt etwa zwischen 1000 und 3500 Hz.Regarding the impact and room sound, it has been shown that a subjectively noticeable improvement is achieved when there is an effective reduction of the sound level in the frequency range of the resonance range of the human ear. This lies between 1000 and 3500 Hz.

Der Erfindung liegt daher das technische Problem zugrunde, eine Schalldämmmatte und ein Verfahren zu deren Herstellung anzugeben, mit denen sowohl die Trittschall- als auch die Raumschalldämmung verbessert werden. The invention is therefore based on the technical problem a sound insulation mat and a process for its manufacture specify with which both the impact sound as room sound insulation can also be improved.

Das zuvor aufgezeigte technische Problem wird erfindungsgemäß durch eine Schalldämmmatte für Bodenbeläge, insbesondere für Parkettböden und Laminatfußböden mit den Merkmalen des Anspruches 1. Weitere Ausgestaltungen der Erfindung sind in den Unteransprüchen angegeben.The technical problem outlined above is according to the invention through a sound insulation mat for flooring, in particular for parquet floors and laminate floors with the Features of claim 1. Further refinements of Invention are specified in the subclaims.

Die Schalldämmmatte weist dazu eine Mattenschicht auf, die eine Mattenoberseite und eine Mattenunterseite aufweist, wobei die Mattenschicht Naturrohstofffasern, mindestens ein Bindemittel und hochdichte Partikel aufweist. Die hochdichten Partikel sind erfindungsgemäß innerhalb der Mattenschicht inhomogen verteilt angeordnet und erzeugen eine von der Mattenunterseite zur Mattenoberseite ansteigende Dichteverteilung. Durch das stark inhomogene Dichteprofil wird einerseits eine gute Trittschalldämmung und andererseits eine gute Raumschalldämmung erreicht. Zudem kann die Matte einer einfachen thermischen bzw. stofflichen Entsorgung nach deren Gebrauch zugeführt werden. Dieses gilt idealer Weise sogar für eine gemeinsame Entsorgung mit dem Fußbodenbelag selbst für den Fall, dass dieser einem Bodenbelag auf Holzbasis, also bspw. Parkettboden oder Laminatfußboden, entspricht.For this purpose, the sound insulation mat has a mat layer, which has a mat top and a mat bottom, the mat layer of natural raw material fibers, at least has a binder and high density particles. According to the invention, the high-density particles are inside the mat layer arranged inhomogeneously distributed and generate one from the bottom of the mat to the top of the mat increasing density distribution. Because of the strongly inhomogeneous On the one hand, the density profile is good impact sound insulation and on the other hand achieves good room sound insulation. In addition, the mat can be a simple thermal or material disposal after their use. This ideally applies even to a common one Disposal with the floor covering even in the event that this is a wood-based floor covering, e.g. Parquet flooring or laminate flooring.

Vorzugsweise entspricht das inhomogene Dichteprofil einer stetigen Funktion, d. h. es treten keine Dichtesprünge auf und die Dichte nimmt mit Ausnahme der Randbereiche stetig von der Mattenunterseite zur Mattenoberseite zu.The inhomogeneous density profile preferably corresponds to one continuous function, d. H. there are no leaps in density and the density increases with the exception of the edge areas steadily from the underside of the mat to the top of the mat.

In bevorzugter Weise ist das inhomogene Dichteprofil durch die folgende Werte charakterisiert. Die Dichte der Mattenschicht ist an der Mattenunterseite größer als 300 kg/m3 und an der Mattenoberseite größer als 1500 kg/m3 ist. Somit liegt an der dem Bodenbelag zugewandten Mattenoberseite eine für die Raumschalldämmung geeignete hohe Materialdichte vor. Dagegen weist die Schalldämmmatte eine geringere Materialdichte im Bereich der Mattenunterseite auf, die der Unterkonstruktion, bspw. dem Estrich, zugewandt ist, so daß die Trittschalldämmung verbessert wird.The inhomogeneous density profile is preferably characterized by the following values. The density of the mat layer is greater than 300 kg / m 3 on the underside of the mat and greater than 1500 kg / m 3 on the underside of the mat. A high material density suitable for room sound insulation is thus present on the top of the mat facing the floor covering. In contrast, the sound insulation mat has a lower material density in the area of the underside of the mat, which faces the substructure, for example the screed, so that the impact sound insulation is improved.

Die Naturrohstofffasern bestehen aus Holzfasern, Flachsfasern, Hanffasern, Sisalfasern, Kokosfasern oder Fasern aus anderen Naturrohstoffen.The natural raw material fibers consist of wood fibers, flax fibers, Hemp fibers, sisal fibers, coconut fibers or fibers from other natural raw materials.

Die Eigenschaften der Holzfasern entsprechen dabei jenen, wie sie beispielsweise aus der Herstellung für MDF-Platten (mitteldichte Faserplatte) oder HDF-Platten (Hartfaserplatten) bekannt sind. Die Fasern können z.B. aus einem thermo-mechanischen Aufschluss aus Holz gewonnen werden. Eine Herstellung aus Altstoffen wie z.B. Spanplatten, Faserplatten, OSB-Platten (OSB - Oriented Strand Board) oder anderen Holzwerkstoffen ist aber ebenso denkbar und ein thermo-mechanischer Aufschluss für die Herstellung der Fasern ist nicht zwingen erforderlich.The properties of the wood fibers correspond to those such as those used in the manufacture of MDF boards (medium density fibreboard) or HDF boards (Hardboard) are known. The fibers can e.g. obtained from a thermo-mechanical digestion from wood become. A production from waste materials such as Chipboard, fiberboard, OSB (Oriented Strand Board) or other wood-based materials is also conceivable and a thermo-mechanical digestion for the Manufacturing the fibers is not mandatory.

Als Alternative zur Holzfaser können - wie erwähnt - auch andere natürliche Fasern, z.B. von Einjahrespflanzen wie Flachs, Hanf, Sisal oder auch Kokos, eingesetzt werden. Die Zerfaserung dafür gestaltet sich deutlich einfacher, es handelt es sich in der Regel dabei um einen reinen mechanischen Prozess.As mentioned, an alternative to wood fiber can also be other natural fibers, e.g. of annual plants like Flax, hemp, sisal or coconut can be used. The defibration for this is much easier, it is usually a purely mechanical one Process.

Holzfasern sind auf Grund ihres Faserdurchmessers und ihrer Faserlänge nur bedingt geeignet, eine in sich formstabile Schalldämmmatte zu bilden. Zu diesem Zweck werden bei einer weiteren Ausgestaltung der vorliegenden Erfindung den Holzfasern nach deren Herstellung als ein Bindemittel sogenannte Bindefasern zugemischt, die eine gute Verfilzung der Holzfasern gewährleisten sollen.Wood fibers are due to their fiber diameter and their The length of the fiber is only suitable to a limited extent Form soundproofing mat. For this purpose in a further embodiment of the present invention the wood fibers after their production as a binder so-called binding fibers mixed in, which is a good one To ensure matting of the wood fibers.

Die Bindefasern können z.B. aus Kunstfasern (z.B. Polyesterfasern), aus naturnahen Fasern (z.B. Zellulosefasern) oder aus Naturfasern (Baumwolle, Sisal, Hanf, Flachs, Kokos) bestehen.The binding fibers can e.g. made of synthetic fibers (e.g. polyester fibers), from natural fibers (e.g. cellulose fibers) or from natural fibers (cotton, sisal, hemp, flax, coconut) consist.

Der Anteil an Bindefasern beträgt je nach deren Faserlänge und Faserdurchmesser zwischen 1 und 20 Gewichtsprozent bezogen auf die Holzfasertrockenmasse. Die Bindefaserlänge kann in Abhängigkeit von den Fasereigenschaften, der Fertigmattendicke und den Möglichkeiten der Mattenbildeanlage im Bereich zwischen 0,5 und 10 cm liegen, der Bindefaserdurchmesser kann zwischen 2 und 10 dtex betragen. Es können aber auch längere bzw. kürzere, dickere bzw. dünnere Bindefasern durchaus geeignet sein. Die Einheit 1 dtex entspricht dabei einem mittleren Innendurchmesser, der sich einstellt, wenn die Faser mit einem Gewicht von 1 Gramm eine Länge von 10.000 Metern aufweist. The proportion of binding fibers is dependent on their fiber length and fiber diameter between 1 and 20 percent by weight based on dry wood pulp. The binding fiber length Depending on the fiber properties, the Finished mat thickness and the possibilities of the mat forming system are in the range between 0.5 and 10 cm, the Binding fiber diameter can be between 2 and 10 dtex. However, longer or shorter, thicker ones can also be used or thinner binder fibers may be suitable. The unit 1 dtex corresponds to an average inside diameter, which adjusts itself when the fiber is weighing of 1 gram has a length of 10,000 meters.

Insbesondere für die Verfestigung der Matte kann im Zuge der Herstellung, die weiter unten beschrieben wird, die Zugabe eines Bindemittels in Form eines Klebemittels erforderlich sein. Als Klebemittel eignen sich dabei Klebemittel mit duroplastischen Eigenschaften, wie z.B. Aminoplaste, Phenoplaste, Acrylate, mit thermoplastischen Eigenschaften, wie z.B. Polyethylen, Polyvinylacetat, Polypropylen, oder auch mit elastomeren Eigenschaften, wie z.B. auf Polyurethanbasis, auf Kautschukbasis, Silikonbasis. Natürliche Klebemittel, z.B. auf Stärkebasis, sind ebenso denkbar. Eine Mischung aus verschiedenen Klebemitteln zur Optimierung der Matteneigenschaften ist ebenso möglich.In particular for the consolidation of the mat can in the course the manufacture described below, the Addition of a binder in the form of an adhesive is required his. Adhesives are suitable as adhesives with thermosetting properties, e.g. amino resins, Phenoplasts, acrylates, with thermoplastic Properties such as Polyethylene, polyvinyl acetate, polypropylene, or with elastomeric properties, such as e.g. based on polyurethane, rubber, silicone. Natural adhesives, e.g. based on starch equally conceivable. A mixture of different adhesives to optimize the mat properties is also possible.

Der Anteil an Klebemittel bezogen auf die Holztrockenmasse beträgt in Abhängigkeit vom Klebemittel zwischen 0,5 und 30 Gewichtsprozent.The proportion of adhesive based on the dry wood mass is between 0.5 depending on the adhesive and 30 weight percent.

Es wird dabei hervorgehoben, daß als Bindemittel entweder Bindefasern, Klebemittel oder eine Kombination daraus verwendet werden kann. So kann bspw. auf eine Klebemittelzugabe auf die Holzfasern gänzlich verzichtet werden, wenn die erforderliche Bindung über die Bindefaser erfolgt.It is emphasized that either Binding fibers, adhesives or a combination thereof can be used. For example, adding an adhesive the wood fibers are completely dispensed with, if the required binding is made via the binding fiber.

Bei einer weiteren Ausgestaltung der Erfindung weisen die hochdichten Partikel ein spezifisches Gewicht von größer als 2000 kg/m3 auf. Dabei können die Partikel aus einem mineralischen Stoff, wie z.B. Kreide, Quarzsand, Bariumsulfat, Schwerspat, Holzasche oder ähnliches, bestehen. In a further embodiment of the invention, the high-density particles have a specific weight of greater than 2000 kg / m 3 . The particles can consist of a mineral substance such as chalk, quartz sand, barium sulfate, heavy spar, wood ash or the like.

Des weiteren können die hochdichten Partikel aus Metalle, z.B. Aluminium, Eisen oder dergleichen, bestehen. Ebenso ist eine Mischung von verschiedenen Stoffen hoher Dichte einsetzbar.Furthermore, the high-density particles made of metals, e.g. Aluminum, iron or the like exist. As well is a mixture of different substances of high density used.

Um die hochdichten Partikel in die Matte einbringen zu können, liegen diese vorzugsweise in kleinstückiger Form vor. Die Partikel hoher Dichte sollen während der Herstellung der Schalldämmmatte in diese eindringen und, wenn überhaupt, nur zu einem geringen Teil direkt auf der Mattenoberfläche zu liegen kommen. Der ideale Durchmesser bzw. das Korngrößenspektrum hängt von den eingesetzten Naturrohstofffasern (Holzfasern, natürliche Fasern, Bindefasern), den verwendeten Bindefasern und/oder dem verwendeten Klebemittel bzw. dem verwendeten Klebemittelgemisch ab. Das Eindringverhalten der hochdichten Partikel in die Matte kann auch über ein gezielt drauf abgestimmtes Korngrößenspektrum bzw. auch über die längliche oder kugelige Geometrie der kleinstückigen Partikel beeinflusst werden. Für Quarzsand als Stoff hoher Dichte hat sich z.B. eine mittlere Korngröße zwischen 0,1 und 0,5, insbesondere 0,2 bis 0,4mm, als besonders günstig herausgestellt.To bring the high density particles into the mat too can, these are preferably in small pieces in front. The high density particles are said to be during manufacture the sound insulation mat penetrate into it and, if at all, only to a small extent directly on the Mat surface come to rest. The ideal diameter or the grain size spectrum depends on the used Natural raw material fibers (wood fibers, natural fibers, binding fibers), the binding fibers used and / or the used Adhesives or the mixture of adhesives used from. The penetration behavior of the high-density particles in the mat can also be coordinated with a specific one Grain size spectrum or also over the elongated or spherical geometry of the small particles influenced become. For quartz sand as a high density fabric e.g. an average grain size between 0.1 and 0.5, in particular 0.2 to 0.4 mm, was found to be particularly favorable.

In Abhängigkeit von der Dichte und dem Eindringverhalten der hochdichten Partikel in die Matte selbst liegt der Gewichtsanteil im Bereich zwischen 30 bis 300 Gewichtsprozent bezogen auf die Trockenmasse der Naturrohstofffasern. Depending on the density and penetration behavior of the high-density particles in the mat itself Weight fraction in the range between 30 to 300 weight percent based on the dry matter of the natural raw material fibers.

Das oben aufgezeigte Problem wird weiterhin erfindungsgemäß durch ein Verfahren zur Herstellung einer zuvor erläuterten Schalldämmmatte gelöst, bei dem ein Gemisch aus Naturrohstofffasern und mindestens einem Bindemittel erzeugt wird, bei dem aus dem Gemisch eine lockere Matte geformt wird, bei dem hochdichte Partikel auf die Mattenoberseite verteilt angeordnet werden, die anschließend in die Matte eindringen, und bei dem die Matte anschließend die Matte verfestigt wird. Weitere Merkmale der Ausgestaltungen des erfindungsgemäßen Verfahrens sind Gegenstand der Unteransprüche.The problem outlined above is still according to the invention by a method for producing a previously explained Sound insulation mat solved, in which a mixture of Natural raw material fibers and at least one binder with a loose mat from the mixture is formed with the high-density particles on the top of the mat distributed, which are then in penetrate the mat, and then the mat the mat is solidified. Other features of the configurations the method of the invention are the subject of subclaims.

Im folgenden wird das Verfahren in seinem Ablauf mit allen weiteren über das erfindungsgemäße Verfahren hinausgehenden Merkmalen in seiner logischen Reihenfolge beschrieben.The following is the procedure in its sequence with everyone further going beyond the inventive method Features described in its logical order.

Die Holzfasern und Bindefasern werden demnach in einem ersten Verarbeitungsschritt zu einer, vorzugsweise homogenen, Mischung im gewünschten Verhältnis vereint und zu einer lockeren Matte geformt. Die Mattenlegung kann entweder mechanisch oder im Airlay-Verfahren erfolgen. Das letztere Verfahren wird u.a. auch für die Mattenbildung von non-woven Matten verwendet und hat sich auch für die Herstellung der erfindungsgemäßen Matte bewährt.The wood fibers and binding fibers are therefore in one first processing step into a, preferably homogeneous, Mix in the desired ratio and add a loose mat. The mat laying can either mechanically or in the Airlay process. The the latter procedure is used also for mat formation of non-woven mats and has also been used for Proven production of the mat according to the invention.

Die Zuführung des Klebemittels - falls erforderlich - kann während der Mattenherstellung erfolgen. Auftragstechniken dafür sind je nach Beschaffenheit des Klebemittels (fest oder flüssig) Spritzsysteme, Streukastensysteme, Disksysteme u.s.w.. The supply of the adhesive - if necessary - can be done during mat production. application techniques depending on the nature of the adhesive (solid or liquid) spray systems, litter box systems, Disc systems etc.

Bei einem Teil der Ausgestaltungen der vorliegenden erfinderischen Verfahren kann die Matte danach mechanisch (z.B. durch Vernadelung) oder im Falle der Verwendung eines thermoplastischen Klebemittels auch durch die Einwirkung von Wärme bis zu einem vorgegebenen Grad verfestigt werden, mit oder ohne vorheriger Vernadelung. Für die Verfestigung mittels Zufuhr von Wärmeenergie durchströmt die Matte einen Ofen, in dem die Matte zwischen Drahtgittern geführt von heißer Luft durchströmt und durch Kalibrierwalzenpaare geführt wird. Am Auslauf des Ofens wird die Matte mit kalter Luft unter den Schmelzbereich des thermoplastischen Klebemittels gekühlt, um die Matte in einen formstabilen Zustand zu bringen. Die Erwärmung der Matte kann aber auch z.B. durch Infrarotstrahlung, Mikrowellenenergie oder Hochfrequenzenergie erfolgen. Bei der Verwendung von geeigneten Klebemitteln ist die Härtung auch durch die Einwirkung von ionisierender Strahlung (z.B. Elektronenstrahlung) denkbar. Solcher Art hergestellte Matten haben eine Dichte zwischen 70 und 200 kg/m3 und ein Flächengewicht zwischen 500 und 3000 g/m2.In some of the configurations of the present inventive method, the mat can then be solidified mechanically (for example by needling) or, if a thermoplastic adhesive is used, by the action of heat to a predetermined degree, with or without prior needling. For solidification by supplying thermal energy, the mat flows through an oven in which hot air flows through the mat between wire grids and is passed through pairs of calibration rollers. At the outlet of the oven, the mat is cooled with cold air under the melting area of the thermoplastic adhesive in order to bring the mat into a dimensionally stable state. The mat can also be heated, for example, by infrared radiation, microwave energy or high-frequency energy. When using suitable adhesives, curing by the action of ionizing radiation (eg electron radiation) is also conceivable. Mats produced in this way have a density between 70 and 200 kg / m 3 and a basis weight between 500 and 3000 g / m 2 .

Im Anschluss daran, ob mit oder ohne die zuvor erläuterte erste Verfestigung, erfolgt das Einstreuen der hochdichten Partikel. Diese werden auf die Mattenoberfläche aufgestreut und z.B. durch Rütteln von der Oberseite in die Tiefe der Matte eingebracht. Auf der Oberfläche zurückbleibende überschüssige Partikel können, sofern erforderlich, z.B. durch Absaugen oder andere Mechanismen entfernt werden. After that, with or without the previously explained first solidification, the high density is sprinkled in Particle. These are sprinkled on the mat surface and e.g. by shaking from the top into the Depth of the mat introduced. Remaining on the surface Excess particles can, if necessary, e.g. removed by suction or other mechanisms become.

Danach erfolgt die eigentliche Verfestigung der Matte durch die Einwirkung von Wärme und Druck. Zur Erzielung des gewünschten Dichteprofils ist es vorteilhaft, die einwirkende Temperatur auf der Mattenoberseite deutlich höher zu wählen als auf der Mattenunterseite. Es kann auch vorteilhaft sein, die Pressplatte der Mattenunterseite zu kühlen. Die einwirkende Temperatur und die Presszeit müssen so gewählt werden, dass das verwendete Klebemittel reagieren kann. Die einwirkende Temperatur auf die Mattenoberseite wird in der Regel zwischen 100 und 200°C betragen, auf der Mattenunterseite in der Regel unter 100°C.Then the mat is actually solidified through the action of heat and pressure. To achieve of the desired density profile, it is advantageous to acting temperature clearly on the mat top to choose higher than on the mat underside. It can also be advantageous, the press plate on the underside of the mat to cool. The acting temperature and the Press time must be chosen so that the used Adhesives can react. The acting temperature on the mat top is usually between 100 and 200 ° C, usually on the underside of the mat below 100 ° C.

Die einzelnen Herstellungsschritte können unmittelbar hintereinander erfolgen. Es ist aber auch denkbar, die einzelnen Fertigungsschritte getrennt, zeitlich wie örtlich, durchzuführen. Die Herstellung einer Endlosmatte bis zur Verpressung ist sicherlich anzustreben, aber eine taktweise Herstellung ist ebenso möglich. Die Verpressung kann entweder taktweise für vorgegebene Mattenformate erfolgen oder aber in einem kontinuierlichen Fertigungsverfahren z.B. mit einer Doppelbandpresse bzw. einer Kalanderanlage.The individual manufacturing steps can be carried out immediately in a row. But it is also conceivable that separate manufacturing steps, temporally and locally, perform. The production of an endless mat up to the pressing is certainly to be aimed for, but one cyclical production is also possible. The pressing can either be cyclical for given mat formats or in a continuous manufacturing process e.g. with a double belt press or a calender system.

Das inhomogene Dichteprofil wird also zum einen durch die einseitige Einstreuung der Stoffe hoher Dichte erzielt. Daneben kann auch bei der im letzten Verfahrensschritt erfolgenden Verfestigung durch die ungleiche Einwirkung von Wärme auf die Mattenoberseite und die Mattenunterseite selbst die inhomogene Verteilung der hochdichten Partikel erreicht werden.The inhomogeneous density profile is therefore on the one hand by the one-sided scattering of high-density fabrics achieved. In addition, the last step in the process solidification taking place due to the unequal action from warmth to the top and bottom of the mat even the inhomogeneous distribution of the high-density particles can be achieved.

Die Naturrohstofffasern, insbesondere die Holzfasern können bereits während der Faserherstellung mit einem Klebemittel im Blow-Line-Verfahren versehen werden. Eine nachträgliche Beaufschlagung mit Klebemitteln nach der Fasertrocknung ist aber ebenso denkbar und kann vor oder im Zuge der Mattenbildung erfolgen.The natural raw material fibers, especially the wood fibers, can already during the fiber production with an adhesive in the blow-line process. An afterthought Application of adhesives after fiber drying is also conceivable and can be in front of or in In the course of mat formation.

Eine erforderliche Beaufschlagung mit Klebemitteln, insbesondere eine Beleimung der Flachsfasern, Hanffasern, Sisalfasern, Kokosfasern oder Fasern aus anderen Naturrohstoffen kann ebenfalls während der Mattenbildung oder zuvor in geeigneten Beleimaggregaten erfolgen.A required application of adhesives, in particular glueing of the flax fibers, hemp fibers, Sisal fibers, coconut fibers or fibers from other natural raw materials can also during mat formation or beforehand in suitable gluing units.

Die Klebemittel können in fester Form, z.B. als Pulver, oder in flüssiger Form, z.B. als Lösung, Dispersion oder Emulsion, auf die zu beaufschlagenden Fasern aufgebracht werden.The adhesives can be in solid form, e.g. as a powder, or in liquid form, e.g. as a solution, dispersion or Emulsion applied to the fibers to be loaded become.

Für die Herstellung der Schalldämmmatte aus Holzfasern, Bindefasern und Klebemittel ist eine Aufbringung des Klebemittels auf die Bindefaser selbst vor der Mattenbildung möglich. Auch im Zuge der Mattenbildung kann das Klebemittel entweder auf die Holzfaser und/oder auf die Bindefaser aufgebracht werden.For the production of the sound insulation mat from wood fibers, Binding fibers and adhesive is an application of the adhesive on the binding fiber itself before the mat is formed possible. The adhesive can also be used in the course of mat formation either on the wood fiber and / or on the binding fiber be applied.

Das Klebemittel hat insgesamt die Aufgabe den Faserverbund so zu verfestigen, dass nach dem Herstellprozess eine definierte Dicke der Schalldämmmatte vorliegt und die in den Fasern eingebetteten Partikel hoher Dichte so fixiert sind, dass während der weiteren Verarbeitung und Verlegung der Matte bzw. während ihres Gebrauchs sich die Partikel nicht aus der Matte herauslösen können.The overall task of the adhesive is the fiber composite to solidify in such a way that a defined thickness of the sound insulation mat and the particles of high density embedded in the fibers are thus fixed are that during further processing and Laying the mat or during use Can’t remove particles from the mat.

Im folgenden wird die Erfindung im Rahmen der Patentansprüche anhand von Ausführungsbeispielen näher erläutert, wobei auf die beigefügte Zeichnung Bezug genommen wird. In der Zeichnung zeigen

Fig. 1
ein Ausführungsbeispiel einer erfindungsgemäßen Schalldämmatte,
Fig. 2
eine graphische Darstellung des Dichteprofils der in Fig. 1 dargestellten Schalldämmmatte.
The invention is explained in more detail below with reference to exemplary embodiments, reference being made to the accompanying drawing. Show in the drawing
Fig. 1
an embodiment of a sound insulation mat according to the invention,
Fig. 2
a graphical representation of the density profile of the soundproofing mat shown in FIG. 1.

Fig. 1 zeigt in einer schematischen Darstellung den strukturellen Aufbau einer erfindungsgemäßen Schalldämmmatte 2. Diese weist eine Mattenschicht 4 auf, die das eigentliche Material der Schalldämmmatte 2 darstellt. Die Mattenschicht 4 weist eine Mattenoberseite 6 und eine Mattenunterseite 8 auf. Bei einer Verwendung als Schalldämmmatte 2 liegt an der Mattenoberseite 6 der Bodenbelag (nicht dargestellt) und an der Mattenunterseite 8 die Unterkonstruktion des Bodens (nicht dargestellt) an.Fig. 1 shows a schematic representation of the Structural structure of a sound insulation mat according to the invention 2. This has a mat layer 4, which represents the actual material of the sound insulation mat 2. The Mat layer 4 has a mat top 6 and a Mat underside 8 on. When used as a sound insulation mat 2 is on the mat top 6 of the flooring (not shown) and on the mat bottom 8 the substructure of the floor (not shown).

Die Mattenschicht 4 weist im wesentlichen als Bestandteile Naturrohstofffasern 10, ein Bindemittel 12 (nicht strukturiert dargestellt) und hochdichte Partikel 14 auf. Erfindungsgemäß sind die Partikel 14 innerhalb der Mattenschicht 4 inhomogen verteilt angeordnet und erzeugen eine von der Mattenunterseite 8 zur Mattenoberseite 6 ansteigende Dichteverteilung auf. Dazu zeigt Fig. 1, daß die Häufigkeitsverteilung des Auftretens der Partikel 14 im Bereich der Mattenoberseite 6 deutlich größer als im mittleren Bereich der Mattenschicht 4 und als im Bereich der Mattenunterseite 8. Da ansonsten die Naturrohstofffasern 10 und das Bindemittel 12 im wesentlichen homogen verteilt angeordnet sind, ergibt sich innerhalb der Mattenschicht 4 die inhomogene Dichteverteilung.The mat layer 4 essentially has components Natural raw material fibers 10, a binder 12 (not shown structured) and high-density particles 14. According to the invention, the particles 14 are within the mat layer 4 arranged inhomogeneously distributed and generate one rising from the mat bottom 8 to the mat top 6 Density distribution on. 1 shows that the frequency distribution of the occurrence of the particles 14 in the area of the mat top 6 significantly larger than in middle area of the mat layer 4 and as in the area the underside of the mat 8. Otherwise the natural raw material fibers 10 and the binder 12 substantially homogeneous are distributed, results within the mat layer 4 the inhomogeneous density distribution.

Fig. 2 zeigt exemplarisch ein solches Dichteprofil einer solchen Dämmmatte. Wie zu erkennen ist, liegt die Dichte im Bereich der Mattenunterseite - also jener Seite, die im verlegten Zustand der Unterkonstruktion zugewandt ist - um 300 kg/m3. Holzfasern bzw. natürliche Fasern mit einer solchen Dichte sind miteinander wenig verfestigt, sodass die Funktion der Trittschalldämmung sehr gut erfüllt werden kann. Die Matte ist noch in bestimmtem Ausmaß punktuell deformierbar, was dem Ausgleich von Unebenheiten der Unterkonstruktion entgegen kommt.Fig. 2 shows an example of such a density profile of such an insulation mat. As can be seen, the density in the area of the underside of the mat - i.e. the side facing the substructure when installed - is around 300 kg / m 3 . Wood fibers or natural fibers with such a density are hardly consolidated with each other, so that the function of impact sound insulation can be very well fulfilled. The mat can still be deformed to a certain extent, which compensates for unevenness in the substructure.

Die Dichte der Matte nimmt dann stetig zur Mattenoberseite hin zu - im exemplarischen Fall bis zu einer Dichte von ca. 2400 kg/m3 knapp unterhalb der Mattenoberseite. Die Dichtezunahme wird einerseits durch das einseitige Einbinden von Stoffen hoher Dichte in die Fasermatrix erreicht, und zum anderen durch die Produktionsparameter Druck und Temperatur. Aus dem Vergleich der beiden in Figur 1 dargestellten Dichteprofile (Schalldämmmatte = mit Einstreuung von Stoffen hoher Dichte; Referenzmatte = ohne Einstreuung) kann man erkennen, welchen Einfluss die Prozessparameter und welchen Einfluss die Einstreuung auf die Dichte darstellen. Zudem ist ersichtlich, dass im exemplarischen Fall die Einstreuung bis ca. 70% der Mattendicke von der Oberseite aus gesehen eindringt.The density of the mat then increases steadily towards the top of the mat - in the exemplary case up to a density of approx. 2400 kg / m 3 just below the top of the mat. The increase in density is achieved on the one hand by the one-sided incorporation of high-density substances in the fiber matrix, and on the other hand by the production parameters of pressure and temperature. By comparing the two density profiles shown in Figure 1 (sound insulation mat = with scattering of high density substances; reference mat = without scattering) one can see which influence the process parameters and what influence the scattering have on the density. It can also be seen that in the exemplary case the litter penetrates up to approx. 70% of the mat thickness as seen from the top.

Im nachfolgenden Beispiel 1 wird die Herstellung einer solchen Dämmmatte beschrieben. 100 Gewichtsteile unbeleimte Holzfasern werden mit 1.0 Gewichtsteilen Polyesterfaser homogen vermischt. Die Polyesterfaser besteht aus einer Kernfaser mit einem Schmelzpunkt über 160°C und einer Ummantelung aus einem Polyester mit einem Schmelzbereich zwischen 110 und 130°C. Die Polyesterfaser hat eine Stapellänge von ca. 50mm und einen Faserdurchmesser von ca. 5 dtex. Das Fasergemisch aus Holzfaser und Bindefaser wird im Airlayverfahren zu einer endlosen Matte geformt und anschließend zur Stabilisierung leicht vernadelt. Das so erhaltene Zwischenprodukt hat eine Flächengewicht von ca. 1500g/m2 und eine Dicke von ca. 12 mm.The production of such an insulation mat is described in Example 1 below. 100 parts by weight of unglued wood fibers are mixed homogeneously with 1.0 part by weight of polyester fiber. The polyester fiber consists of a core fiber with a melting point above 160 ° C and a sheathing made of polyester with a melting range between 110 and 130 ° C. The polyester fiber has a staple length of approx. 50mm and a fiber diameter of approx. 5 dtex. The fiber mixture of wood fiber and binder fiber is formed into an endless mat in the airlay process and then needled to stabilize it. The intermediate product thus obtained has a weight per unit area of approx. 1500 g / m 2 and a thickness of approx. 12 mm.

Anschließend werden ca. 90 Gewichtsteile Quarzsand mit einem Korndurchmesser zwischen 0,2 und 0,4mm auf die Matte verteilt und durch Vibration der Matte in die Tiefe der Matte eingerüttelt. Anschließend wird die so erhaltene Matte in einer Plattenpresse mit folgenden Prozessparametern verpresst:

  • Heizplattentemperatur oben/unten: 180°C/55°C
  • Presszeit: 60 Sekunden
  • Dickengesteuerte Fahrweise (Solldicke 3 mm)
Then approx. 90 parts by weight of quartz sand with a grain diameter between 0.2 and 0.4 mm are distributed on the mat and vibrated into the depth of the mat by vibration of the mat. The mat thus obtained is then pressed in a plate press with the following process parameters:
  • Hotplate temperature top / bottom: 180 ° C / 55 ° C
  • Press time: 60 seconds
  • Thickness-controlled driving style (target thickness 3 mm)

Man erhält eine Schalldämmmatte mit ca. 3 mm Stärke, die sehr biegeweich ist und ein Dichteprofil entsprechend der Figur 1 aufweist. Die Matte ergibt vollflächig auf die Unterseite einer Laminatfußbodendiele aufgeklebt eine wirkungsvolle Reduzierung des Tritt- und Raumschallpegels.A soundproofing mat with a thickness of approx. 3 mm is obtained is very flexible and has a density profile corresponding to that Figure 1 has. The mat results in the full area on the Glued underside of a laminate floor board effective reduction of impact and room noise levels.

Im Beispiel 2 wird eine Schalldämmmatte wie in Beispiel 1 hergestellt. Anstelle des Vernadelns der Holzfaser/Bindefasermatte wird eine thermische Verfestigung der Matte durchgeführt, ein sogenanntes Thermobonding. Dabei wird in einem Ofen Heißluft mit einer Temperatur um 180°C durch die Matte geführt und die Dicke über Kalibrierwalzenpaare eingestellt. Das Resultat ist ein Zwischenprodukt mit einem Flächengewicht von ca. 2500g/m2. Nachfolgend wird wie in Beispiel 1 beschrieben Quarzsand eingestreut und die Matte mit analogen Pressparametern verdichtet. Das Dichteprofil der Matte ist nahezu identisch, ebenso die schalltechnischen Eigenschaften.In example 2, a sound insulation mat is produced as in example 1. Instead of needling the wood fiber / binding fiber mat, the mat is thermally consolidated, so-called thermobonding. Hot air at a temperature of around 180 ° C is passed through the mat in an oven and the thickness is set using calibration roller pairs. The result is an intermediate product with a basis weight of approx. 2500 g / m 2 . Subsequently, quartz sand is sprinkled in as described in Example 1 and the mat is compacted with analog press parameters. The density profile of the mat is almost identical, as are the acoustic properties.

Das Beispiel 3 beschreibt die Herstellung einer Schalldämmmatte bestehend aus beleimten Holzfasern und unbeleimten Bindefasern auf Zellulosefaserbasis. Dazu wird im Zuge der Holzfaserherstellung ein Klebemittel auf Acrylatbasis im Ausmaß von ca. 10 Gewichtsteilen bezogen auf Holzmasse auf die Holzfaser aufgebracht. 100 Gewichtsteile der beleimten Holzfasern werden mit 10 Gewichtsteilen Zellulosefasern homogen vermischt und im Airlayverfahren zu einer Matte geformt . Die Zellulosefasern weisen eine Stapellänge von ca. 60 mm auf und verfügen über einen Faserdurchmesser von ca. 7 dtex. Die Matte wird zur Verfestigung vernadelt.Example 3 describes the production of a sound insulation mat consisting of glued wood fibers and unglued Binding fibers based on cellulose fibers. For this, in In the course of wood fiber production an adhesive based on acrylate to the extent of about 10 parts by weight Wood mass applied to the wood fiber. 100 parts by weight the glued wood fibers are with 10 parts by weight Cellulose fibers mixed homogeneously and in the air-lay process shaped into a mat. The cellulose fibers have one Stack length of approx. 60 mm and have a fiber diameter of approx. 7 dtex. The mat becomes a solidification needled.

Anschließend werden ca. 90 Gewichtsteile Quarzsand mit einem Korndurchmesser zwischen 0,2 und 0,4 mm auf die Matte verteilt und durch Vibration der Matte in die Tiefe der Matte eingerüttelt. Anschließend wird die so erhaltene Matte in einer Plattenpresse mit folgenden Prozessparametern verpresst:

  • Heizplattentemperatur oben/unten: 180°C/70°C
  • Presszeit: 60 Sekunden
  • Dickengesteuerte Fahrweise (Solldicke 5 mm)
Then approx. 90 parts by weight of quartz sand with a grain diameter between 0.2 and 0.4 mm are distributed on the mat and vibrated into the depth of the mat by vibration of the mat. The mat thus obtained is then pressed in a plate press with the following process parameters:
  • Hotplate temperature top / bottom: 180 ° C / 70 ° C
  • Press time: 60 seconds
  • Thickness-controlled driving style (target thickness 5 mm)

Man erhält eine Dämmmatte mit ca. 5 mm Stärke, die sehr biegeweich ist und ein Dichteprofil ähnlich der Figur 1 aufweist. Die Matte ergibt vollflächig auf die Unterseite einer Laminatfußbodendiele eine wirkungsvolle subjektive Reduktion des Tritt- und Raumschallpegels.You get an insulation mat with about 5 mm thickness, which is very is flexible and has a density profile similar to FIG. 1 having. The mat results in full area on the underside a laminate flooring is an effective subjective Reduction of the impact and room noise level.

Das Beispiel 4 beschreibt die Herstellung einer Matte ohne Verwendung eines Klebemittels. 30 Gewichtsteile Hanffasern (mittlere Länge ca. 20mm) werden mit 70 Gewichtsteilen Holzfasern und 10 Gewichtsteilen einer Bindefaser (Zellulosefaser, Länge ca. 50mm, Faserdurchmesser ca. 7 dtex) vermischt und eine lockere Matte im Airlayverfahren mit einem Flächengewicht von 3000g/m2 hergestellt Auf die Mattenoberseite werden 100 Gewichtsteile Quarzsand mit einem Korndurchmesser zwischen 0,2 und 0,4 mm gleichmäßig verteilt und durch Rütteln in die Tiefe der Matte eingebracht. Zudem wird ein feines Faservlies auf Zellulosefaserbasis oberseitig platziert, das ein zu starkes herauslösen der Quarzpartikel beim Vernadeln verhindert. Die so hergestellte Matte wird im Anschluss daran durch intensives Vernadeln verfestigt. Die Dicke der Matte beträgt ca. 8 mm. Die im oberen Bereich der Matte vorhandene Dichte beträgt ca. 1600 kg/m3.Example 4 describes the production of a mat without the use of an adhesive. 30 parts by weight of hemp fibers (average length approx. 20 mm) are mixed with 70 parts by weight of wood fibers and 10 parts by weight of a binding fiber (cellulose fiber, length approx. 50 mm, fiber diameter approx. 7 dtex) and a loose mat is produced using the airlay process with a basis weight of 3000 g / m 2 100 parts by weight of quartz sand with a grain diameter between 0.2 and 0.4 mm are evenly distributed on the top of the mat and introduced into the depth of the mat by shaking. In addition, a fine fiber fleece based on cellulose fiber is placed on the top side, which prevents the quartz particles from loosening too much when needling. The mat produced in this way is then solidified by intensive needling. The thickness of the mat is approx. 8 mm. The density in the upper area of the mat is approx. 1600 kg / m 3 .

Claims (28)

  1. A sound insulation mat for floor coverings, particularly for parquet floors and laminate floors,
    having a mat layer (4), which has a mat top (6) and a mat bottom (8),
    the mat layer (4) having natural raw material fibers (10), at least one binder (12), and high-density particles (14),
       characterized in that
    the high-density particles (14) are positioned distributed inhomogeneously within the mat layer (4) and produce a density distribution increasing from the mat bottom (8) to the mat top (6).
  2. The sound insulation mat according to Claim 1,
    characterized in that the density distribution increases continuously from the mat bottom (8) to the mat top (6).
  3. The sound insulation mat according to Claim 1 or 2,
    characterized in that the density of the mat layer is greater than 300 kg/m3 on the mat bottom (8) and greater than 1500 kg/m3 on the mat top (6).
  4. The sound insulation mat according to one of Claims 1 to 3,
    characterized in that the natural raw material fibers (10) include fibers made of wood, flax, hemp, sisal, or coconut.
  5. The sound insulation mat according to one of Claims 1 to 4,
    characterized in that the binder (12) at least partially includes binder fibers which are made of artificial fibers, partially natural fibers, or natural fibers, or a mixture thereof.
  6. The sound insulation mat according to Claim 5,
    characterized in that the weight proportion of the binder fibers in relation to the dry mass of the natural raw material fibers (10) is 1 to 20 weight-percent.
  7. The sound insulation mat according to Claim 5 or 6,
    characterized in that the length of the binder fibers is in the range from 0.5 to 10 cm.
  8. The sound insulation mat according to one of Claims 5 to 7,
    characterized in that the thickness of the binder fibers is in the range from 2 to 10 dtex.
  9. The sound insulation mat according to one of Claims 1 to 8,
    characterized in that the binder (12) is at least partially made of a duroplastic, thermoplastic, elastomeric, or natural adhesive or a mixture thereof.
  10. The sound insulation mat according to Claim 9,
    characterized in that the weight proportion of the adhesive in relation to the dry mass of the natural raw material fibers (10) is 0.5 to 30 weight-percent.
  11. The sound insulation mat according to one of Claims 1 to 10,
    characterized in that the high-density particles (14) have a specific weight of greater than 2000 kg/m3.
  12. The sound insulation mat according to Claim 11,
    characterized in that the high-density particles (14) are made of a mineral material or a metallic material or a mixture thereof.
  13. The sound insulation mat according to Claim 11 or 12,
    characterized in that the grain size of the high-density particles (14) is in the range between 0.1 and 0.5, particularly between 0.2 and 0.4 mm.
  14. The sound insulation mat according to one of Claims 11 to 13,
    characterized in that the weight proportion of the high-density particles (14) in relation to the dry mass of the natural raw material fibers (10) is 30 to 300 weight-percent.
  15. A method for manufacturing a sound insulation mat according to one of Claims 1 through 14,
    wherein a mixture made of natural raw material fibers and at least one binder is produced,
    a loose mat is shaped from the mixture,
    high-density particles, which subsequently penetrate into the mat, are positioned distributed on the mat top, and
    the mat is subsequently compacted.
  16. The method according to Claim 15,
    wherein binder fibers are added to the mixture as the binder.
  17. The method according to Claim 16,
    wherein adhesive is added to the mixture as the binder.
  18. The method according to one of Claims 15 to 17,
    wherein adhesive is applied to the natural raw material fibers and/or to the binder fibers.
  19. The method according to Claim 18,
    wherein adhesive is applied before the shaping of the loose mat.
  20. The method according to Claim 18,
    wherein the adhesive is applied during the shaping of the loose mat.
  21. The method according to one of Claims 15 to 20,
    wherein the mat is applied mechanically or in the airlay method.
  22. The method according to one of Claims 15 to 21,
    wherein the mat is compacted mechanically, particularly through needling.
  23. The method according to one of Claims 15 to 22,
    wherein the mat is compacted through the effect of pressure and/or curing energy, preferably heat energy.
  24. The method according to one of Claims 15 to 23,
    wherein the high-density particles are distributed on the mat top through uniform spreading.
  25. The method according to one of Claims 15 to 24,
    wherein the penetration of the high-density particles into the mat is accelerated through shaking.
  26. The method according to one of Claims 15 to 25,
    wherein, during the compaction, the temperature acting on the mat top is set greater than the temperature acting on the mat bottom.
  27. The method according to Claim 26,
    wherein the temperature on the mat top is set in the range from 100 to 200 °C.
  28. The method according to Claim 26 or 27,
    wherein the temperature on the mat bottom is set below 100 °C.
EP02708268A 2001-01-12 2002-01-09 Sound insulation mat for floor coverings, and method for the production thereof Expired - Lifetime EP1349996B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE20100632U DE20100632U1 (en) 2001-01-12 2001-01-12 sound barrier
DE20100632U 2001-01-12
PCT/EP2002/000143 WO2002055811A1 (en) 2001-01-12 2002-01-09 Sound insulation mat for floor coverings, and method for the production thereof

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EP1349996A1 EP1349996A1 (en) 2003-10-08
EP1349996B1 true EP1349996B1 (en) 2004-09-22

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AT (1) ATE277247T1 (en)
DE (3) DE20100632U1 (en)
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Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2870160A1 (en) * 2004-05-13 2005-11-18 Cera Acoustic protection system for motor vehicle, has fiber-like material layer presenting progressive density variation so that layer has high and low average density zones for presenting mass and spring behaviors
DE102004056131B4 (en) * 2004-11-16 2006-08-31 Kronotec Ag Soundproofing
DE202005007293U1 (en) * 2005-05-07 2006-09-07 Kronospan Technical Co. Ltd., Engomi Panels with three-layer impact sound absorption
FR2889617B1 (en) * 2005-08-03 2008-03-14 Mecaplast Sa SOUNDPROOFING LAYER AND SOUND COMPRESSOR INCORPORATING SAME
DE202007018098U1 (en) * 2007-12-21 2009-05-14 Witex Flooring Products Gmbh Underlay mat
EP2338928B1 (en) 2009-12-17 2011-11-02 Ems-Patent Ag Binding fibre for fixing flat materials containing natural fibres
FR3078040B1 (en) 2018-02-22 2020-03-13 Faurecia Automotive Industrie MOTOR VEHICLE SOUNDPROOFING PART AND MANUFACTURING METHOD THEREOF

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10017202A1 (en) * 2000-04-06 2000-09-21 Fasa Gmbh Heat and/or sound insulating construction element, e.g. board, mat, block or cavity filling, comprises seaweed, binder and aggregate

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH245004A (en) * 1943-09-22 1946-10-31 Gmbh Parkettfabrik Goldbach Sound-absorbing and heat-insulating parquet board.
DE3322375A1 (en) * 1983-06-22 1985-01-03 Karl 5249 Hamm Rische Sound-proofing and heat-insulating panel and process for the manufacture thereof
DE4307550A1 (en) * 1993-03-10 1994-09-15 Gefinex Jackon Gmbh Footstep-sound insulation
DE4428613A1 (en) * 1994-08-12 1996-02-15 Kinkel Werner Helmut Multilayer heat and sound-insulating material
US5684278A (en) * 1994-11-18 1997-11-04 Lockheed Missiles & Space Co., Inc. Acoustical ceramic panel and method
DE59802115D1 (en) * 1997-03-11 2001-12-20 Akustik Ag Wallisellen Flooring with soundproofing mat
DE19711992A1 (en) 1997-03-14 1998-09-17 Ikon Praezisionstechnik Locking cylinder
JP3180065B2 (en) * 1997-09-29 2001-06-25 株式会社江田組 Floor material and flooring construction method using this floor material
DE19813543C2 (en) * 1998-03-27 2001-05-17 Karl Goesele Structure-borne sound-absorbing insulation board and double-shell component containing such an insulation board
DE19851656C2 (en) * 1998-11-10 2002-12-05 Johannes Schulte floorboard
DE29908733U1 (en) * 1999-05-18 1999-08-12 Witex AG, 32832 Augustdorf Sound insulation device for floor coverings

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10017202A1 (en) * 2000-04-06 2000-09-21 Fasa Gmbh Heat and/or sound insulating construction element, e.g. board, mat, block or cavity filling, comprises seaweed, binder and aggregate

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DE10200559C2 (en) 2003-04-10
WO2002055811A1 (en) 2002-07-18
DE50201097D1 (en) 2004-10-28
EP1349996A1 (en) 2003-10-08
DE10200559A1 (en) 2002-08-14
ATE277247T1 (en) 2004-10-15
DE20100632U1 (en) 2002-02-28

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