EP1534505A1 - Element isolant acoustique et thermique multicouche - Google Patents

Element isolant acoustique et thermique multicouche

Info

Publication number
EP1534505A1
EP1534505A1 EP03793613A EP03793613A EP1534505A1 EP 1534505 A1 EP1534505 A1 EP 1534505A1 EP 03793613 A EP03793613 A EP 03793613A EP 03793613 A EP03793613 A EP 03793613A EP 1534505 A1 EP1534505 A1 EP 1534505A1
Authority
EP
European Patent Office
Prior art keywords
layer
foam
insulation part
sound
elevations
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP03793613A
Other languages
German (de)
English (en)
Inventor
Christian GNÄDIG
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Carcoustics Techconsult GmbH
Original Assignee
Carcoustics Tech Center GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Carcoustics Tech Center GmbH filed Critical Carcoustics Tech Center GmbH
Publication of EP1534505A1 publication Critical patent/EP1534505A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/22—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed
    • B32B5/24—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer
    • B32B5/245—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer another layer next to it being a foam layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
    • B32B3/26—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
    • B32B5/06—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer characterised by a fibrous or filamentary layer mechanically connected, e.g. by needling to another layer, e.g. of fibres, of paper
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/22—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed
    • B32B5/24—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2266/00—Composition of foam
    • B32B2266/02—Organic
    • B32B2266/0214—Materials belonging to B32B27/00
    • B32B2266/0285—Condensation resins of aldehydes, e.g. with phenols, ureas, melamines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2266/00—Composition of foam
    • B32B2266/06—Open cell foam
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/10—Properties of the layers or laminate having particular acoustical properties
    • B32B2307/102—Insulating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/30—Properties of the layers or laminate having particular thermal properties
    • B32B2307/304—Insulating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2605/00—Vehicles
    • B32B2605/003—Interior finishings

Definitions

  • the invention relates to a multilayer sound and heat insulation part, in particular for motor vehicles, with at least one three-dimensionally structured foam layer and at least one non-woven layer lying thereon, the foam layer having a multiplicity of elevations and / or depressions.
  • Such a sound and heat insulation part is known for example from WO 00/34943 AI.
  • the foam layer of the known insulation part consists of polyimide foam and runs zigzag-för ig, wherein in the gussets of the zigzag shape in cross-section approximately V-shaped cavities are present between the foam and the nonwoven layer.
  • the nonwoven layer is placed on the foam sheet without gluing, lamination or the like. The two layers are held together by an edge-welded wrapping film.
  • DE 198 21 532 AI describes a heat and sound-insulating covering for the engine compartment of motor vehicles.
  • This cladding consists of an engine-side cover layer, an acoustically insulating thermoplastic foam layer that is in contact with it and permanently temperature-resistant up to 180 ° C, an insulating layer of plastic foam or nonwoven fabric that is in contact with it, and one
  • the foam layer and the insulating layer made of plastic foam or nonwoven fabric in contact with it can have a raster-shaped profile, which consists for example of convex bulges.
  • the layers of the cladding are connected to each other by glue.
  • DE 198 21 532 AI does not contain a drawing of the cladding described.
  • the present invention had for its object to provide a multi-layer sound and heat insulation part of the type mentioned, which is particularly easy and inexpensive to manufacture.
  • this object is achieved in that the nonwoven layer is needled onto the foam layer in such a way that the nonwoven layer rests against the foam layer parallel to the contour and the elevations and / or depressions of the foam layer are also pronounced in the surface of the nonwoven layer facing away from it.
  • the composite of fleece layer and foam layer of the insulation part according to the invention is thus produced without adhesive, so that costs for adhesive are saved and the weight of the insulation part is reduced accordingly.
  • By avoiding the use of adhesive emissions caused by the adhesive and possibly polluting the environment can be avoided.
  • Dispensing with adhesive also simplifies the recycling of corresponding insulation parts.
  • the insulating part according to the invention has a relatively large nonwoven layer surface, since the nonwoven layer rests against the three-dimensionally structured foam layer and thus essentially does so
  • MY / sb 0_0S_5WO has the same profile as the foam bed with a large acoustically effective surface.
  • the shape of the surface profile of the foam layer in the nonwoven layer can also be advantageous with regard to the optical effect of the insulating part if the nonwoven layer represents the visible side of the insulating part.
  • the insulation part according to the invention can thus in particular also have a design function.
  • the needling of the nonwoven layer to the foam layer can be done mechanically or by means of water jet technology.
  • the elevations and / or depressions of the foam layer can be arranged regularly or irregularly. However, they are preferably arranged essentially uniformly, in particular in the form of a grid.
  • the grid can be square, rectangular or route-shaped.
  • the foam layer preferably consists of open-cell foam.
  • the foam layer can preferably be made of melamine resin foam.
  • the nonwoven layer can consist of a spunbonded web or a needle punched web.
  • the fibers of the nonwoven layer can in particular be synthetic fibers.
  • the nonwoven layer can also be formed from an aluminum fiber fleece.
  • An advantageous embodiment of the insulation part according to the invention consists in the fact that the nonwoven layer is needled in the area of depressions on the foam layer and in the area of elevations it lies without needling on the foam area. On the one hand, this prevents perforation of the nonwoven layer in the region of the elevations, which may be desirable for the visual appearance of the nonwoven layer, and on the other hand facilitates separation of the nonwoven layer and foam layer when the insulation part is recycled later.
  • Figure 1 is a perspective view of a portion of an insulation part according to the invention.
  • FIG. 2 shows a cross-sectional view of the insulation part according to FIG. 1;
  • FIG. 3 shows a cross-sectional view of an insulation part according to a second exemplary embodiment of the invention.
  • Fig. 4 is a schematic representation of a system for producing an insulation part according to the invention.
  • the insulation part 1 shows the visible side of a portion of an insulation part 1 according to the invention.
  • the insulation part 1 is essentially plate-shaped. It is made of a three-dimensionally structured foam layer 2
  • the foam layer 2 has a plurality of nub-shaped elevations 4 or trough-shaped depressions 5, which are arranged in a grid.
  • the elevations 4 and depressions 5 were produced in the foam layer 2, for example by profile cutting and / or compression molding before the nonwoven covering.
  • the layer thickness of the foam layer 2, including the elevations 4, is in the range of approximately 5 to 20 mm.
  • the layer thickness of the nonwoven layer 3 can be, for example, 1 to 5 mm.
  • the foam layer 2 is only structured on one side, i.e. the opposite side of the foam layer 2 is essentially flat. If necessary, however, the foam layer 2 can also be profiled on both sides and can also be provided on the underside with a further plastic or textile layer (see FIG. 3) and / or a plastic or metal foil (not shown).
  • the nonwoven layer 3 is needled on the foam layer 2, so that it lies against the foam layer 2 in parallel with the contour.
  • the elevations 4 and depressions 5 of the foam material 2 are thus also pronounced in the surface of the nonwoven layer 3.
  • the bond between the nonwoven layer 3 and the foam layer 2 is thus carried out without adhesive.
  • the needling of the nonwoven layer 3 on the foam layer 2 can be carried out by means of a lifting and lowering needle bar, which has a plurality of needles aligned parallel to one another.
  • the needling of the nonwoven layer 3 can also be done using water
  • MY / sb 0-06-5WO Blasting technology ie with a variety of fine high pressure water jets.
  • the needles or water jets pull a large number of fibers 6 of the nonwoven layer 3 into the foam material 2, so that sections of these fibers 6 are sufficiently firmly anchored or clawed in the foam material layer.
  • a large number of fibers 6 extend to the underside of the foam layer. 2
  • sections of these fibers 6 remain anchored or clawed in the nonwoven layer 3.
  • the nonwoven layer 3 is needled to the foam layer 2 essentially uniformly and over the entire surface.
  • the needling can also take place in such a way that the nonwoven layer 3 is needled only in the area of the depressions 5 and lies in the area of the elevations 4 without needling on the foam layer 2.
  • the foam layer 2 preferably consists of open-cell foam, for example of melamine resin foam. However, it is also possible to use an essentially closed-cell foam for the foam layer 2.
  • the exemplary embodiment shown in FIG. 3 initially differs from that in FIG. 2 in that the foam layer 2 is structured three-dimensionally on both sides.
  • the structuring consists on both sides of the foam layer 2 from a multiplicity of knob-shaped elevations 4 or trough-shaped depressions 5, which in turn are arranged in a grid. It can be seen that an elevation 4 on one side of the foam layer 2 is opposite a depression 5 on the opposite side, and vice versa.
  • the exemplary embodiment in FIG. 3 differs from that in FIG. 2 in that the profiled foam layer 2 is provided on both sides with a nonwoven layer 3, 3 '.
  • the second nonwoven layer 3 ' is also needled to the foam layer 2 in such a way that it rests on the foam layer 2 parallel to the contour. Accordingly, the elevations 4 and depressions 5 of the foam layer 2 facing it are clearly pronounced in their surface.
  • the two fleece layers 3, 3 ' can be formed from different fleece material.
  • the insulation part 1 according to the invention is particularly suitable for soundproofing and heat-insulating cladding of interior surfaces in motor vehicles.
  • the nonwoven layers 3, 3 ' are preferably formed from a spunbond, needle punch and / or aluminum fiber fleece.
  • the use of an aluminum fiber fleece is particularly advantageous when the insulation part 1 according to the invention is to be used as an acoustically effective heat shield.
  • the aluminum fiber fleece in particular has a heat-reflecting effect.
  • the foam layer 2 can in this case advantageously consist of melamine resin foam, which is known to have a relatively high temperature resistance.
  • the foam layer denoted by 2 is in the form of a material web which is first conveyed to a station 7, in which the foam layer 2 at least
  • MY / sb 020635WO is profiled on one side by contour cutting and / or compression molding.
  • a nonwoven layer 3, 3 ' is then applied to the profiled surface of the foam layer 2.
  • the fleece layer 3, 3 ' can also be present as a material web and can be fed from a supply roll.
  • the merged material webs 2, 3, 3 'then pass through a needling station, which is formed here by way of example from two needle bars 8, 9 that can be raised and lowered.
  • the opposing needle bars 8, 9 are prestressed by means of springs (not shown) or the like, so that they maintain a certain distance orthogonally to the material webs 2, 3, 3 'brought together.
  • the needle bars 8, 9 are each assigned a cam drive 10, 11, which moves the respective needle bar against the action of the spring on the material webs, so that the needles of the respective needle bar 8, 9 are intermittently inserted into the fleece layer 3 or 3 'and the foam layer Pierce 2 and connect the respective fleece layer 3, 3 'to the foam layer 2.
  • a needle bar instead of mechanical needling using a needle bar, hydraulic needling using water jets or the like can also be used.
  • the composite of foam layer 2 and nonwoven layer 3 or nonwoven layers 3, 3 'produced by the needling is finally wound up in roll form for transport to a further processing station, for example a cutting station for producing certain blanks. It goes without saying that the composite can also be further processed, in particular tailored, directly behind the needling station.

Landscapes

  • Laminated Bodies (AREA)
  • Vehicle Interior And Exterior Ornaments, Soundproofing, And Insulation (AREA)
  • Nonwoven Fabrics (AREA)
  • Thermal Insulation (AREA)

Abstract

L'invention concerne un élément isolant acoustique et thermique multicouche (1), destiné notamment à des véhicules automobiles et comprenant au moins une couche de matériau mousse (2) à structure tridimensionnelle et au moins une couche de non-tissé (3) adjacente, la couche de matériau mousse présentant une multitude de bosses (4) ou de creux (5). L'invention vise à produire de manière économique un élément isolant léger de ce type. A cet effet, la couche de non-tissé (3) est épinglée à la couche de matériau mousse (2) de sorte que la couche de non-tissé suit les contours de la couche de matériau mousse et que les bosses (4) ou les creux (5) de la couche de matériau mousse (2) apparaissent également dans la surface de la couche de non-tissé, opposée à la couche de matériau mousse. Le composite formé par la couche de non-tissé et la couche de matériau mousse de l'élément isolant est ainsi produit sans adhésif, ce qui économise les coûts en adhésif et réduit en conséquence le poids de l'élément isolant.
EP03793613A 2002-08-23 2003-06-27 Element isolant acoustique et thermique multicouche Withdrawn EP1534505A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE20213228U 2002-08-23
DE20213228U DE20213228U1 (de) 2002-08-23 2002-08-23 Mehrlagiges Schall- und Wärmeisolationsteil
PCT/EP2003/006825 WO2004022329A1 (fr) 2002-08-23 2003-06-27 Element isolant acoustique et thermique multicouche

Publications (1)

Publication Number Publication Date
EP1534505A1 true EP1534505A1 (fr) 2005-06-01

Family

ID=7974509

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03793613A Withdrawn EP1534505A1 (fr) 2002-08-23 2003-06-27 Element isolant acoustique et thermique multicouche

Country Status (8)

Country Link
US (1) US20040256175A1 (fr)
EP (1) EP1534505A1 (fr)
JP (1) JP2005536663A (fr)
CN (1) CN1610611A (fr)
AU (1) AU2003249892A1 (fr)
DE (1) DE20213228U1 (fr)
MX (1) MXPA04003895A (fr)
WO (1) WO2004022329A1 (fr)

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EP2782752A4 (fr) * 2011-11-18 2015-07-08 Thermal Systems Holding Llc Procédé et appareil d'isolation améliorés
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DE102014220119A1 (de) * 2014-10-02 2016-04-07 Röchling Automotive SE & Co. KG Funktionsraum mit, vorzugsweise thermo-akustisch, isolierender Einfassung und mit dieser zusammenwirkender Luftklappenanordnung
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EP3141721B1 (fr) * 2015-09-10 2019-05-29 ISOLITE GmbH Système d'isolation réfléchissant
JP6614450B2 (ja) * 2016-05-11 2019-12-04 パナソニックＩｐマネジメント株式会社 不織布及び吸音材
CN107962847B (zh) * 2016-10-19 2020-06-26 泽费罗斯股份有限公司 声学吸收体复合隔板组件
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Also Published As

Publication number Publication date
US20040256175A1 (en) 2004-12-23
WO2004022329A1 (fr) 2004-03-18
MXPA04003895A (es) 2004-07-16
AU2003249892A1 (en) 2004-03-29
CN1610611A (zh) 2005-04-27
JP2005536663A (ja) 2005-12-02
DE20213228U1 (de) 2002-10-31

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