DE20102194U1 - Automotive headlining - Google Patents

Automotive headlining

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Publication number
DE20102194U1
DE20102194U1 DE20102194U DE20102194U DE20102194U1 DE 20102194 U1 DE20102194 U1 DE 20102194U1 DE 20102194 U DE20102194 U DE 20102194U DE 20102194 U DE20102194 U DE 20102194U DE 20102194 U1 DE20102194 U1 DE 20102194U1
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DE
Germany
Prior art keywords
roof liner
layer
liner according
layers
foam
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.)
Expired - Lifetime
Application number
DE20102194U
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German (de)
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Quadrant Plastic Composites AG
Original Assignee
Symalit AG
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Filing date
Publication date
Application filed by Symalit AG filed Critical Symalit AG
Priority to DE20102194U priority Critical patent/DE20102194U1/en
Publication of DE20102194U1 publication Critical patent/DE20102194U1/en
Priority to DE10160442A priority patent/DE10160442B4/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • 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
    • B32B3/28—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 characterised by a layer comprising a deformed thin sheet, i.e. the layer having its entire thickness deformed out of the plane, e.g. corrugated, crumpled
    • 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
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B27/065—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of 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
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
    • 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
    • B32B5/18—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 features of a layer of foamed material
    • 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
    • B32B5/32—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 at least two layers being foamed and next to each other
    • 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
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • B32B7/05—Interconnection of layers the layers not being connected over the whole surface, e.g. discontinuous connection or patterned connection
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R13/00—Elements for body-finishing, identifying, or decorating; Arrangements or adaptations for advertising purposes
    • B60R13/02—Internal Trim mouldings ; Internal Ledges; Wall liners for passenger compartments; Roof liners
    • B60R13/0212—Roof or head liners
    • B60R13/0225—Roof or head liners self supporting head liners
    • 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
    • B32B2266/025—Polyolefin
    • 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
    • B32B2323/00—Polyalkenes
    • B32B2323/10—Polypropylene
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Vehicle Interior And Exterior Ornaments, Soundproofing, And Insulation (AREA)
  • Laminated Bodies (AREA)

Description

Automobil-DachhimmelAutomotive headliner

Die Erfindung betrifft einen Dachhimmel aus zwei miteinander verbundenen Schichten aus faserverstärkten Thermoplast-Lagen und Kunststoff-Schaumfolien, zwischen denen sich Bereiche mit Luftpolstern befinden.The invention relates to a roof liner made of two interconnected layers of fiber-reinforced thermoplastic layers and plastic foam films, between which there are areas with air cushions.

Kraftfahrzeug-Innenteile werden in zunehmendem Maße aus Kunststoffen hergestellt. Für Dachhimmel werden dabei vor allem Schaumstoffbahnen, insbesondere aus Polyurethan oder Polyolefinen verwendet, die an ihrer Unterseite mit einer Kunststoffolie abgedeckt sind. Die genannten Schaumstoffe können zwar schwache Stöße abfedern, bei einem starken Aufprall, z.B. bei einem Unfall oder beim Fahren über ein tiefes Schlagloch, werden sie aber so stark zusammengedrückt, daß der Kopf des Fahrgasts praktisch direkt an das harte Metallblech des Automobildachs anschlägt.Interior parts of motor vehicles are increasingly being made of plastic. For roof liners, foam sheets are used, particularly those made of polyurethane or polyolefins, which are covered with a plastic film on the underside. Although these foams can absorb light impacts, in the event of a strong impact, e.g. in an accident or when driving over a deep pothole, they are compressed so much that the passenger's head practically hits the hard metal sheet of the car roof.

Die EP-A 657 281 beschreibt ein Bauelement als Aufprallschutz und zur Schalldämmung im Automobilinnenraum, bestehend aus einer Kunststoff-Schaumschicht, z.B. aus Polyurethan, und einem damit kraftschlüssig verbundenen Tragkörper aus einem naturfaserverstärkten Thermoplasten.EP-A 657 281 describes a component for impact protection and sound insulation in the interior of a car, consisting of a plastic foam layer, e.g. made of polyurethane, and a supporting body made of a natural fiber-reinforced thermoplastic that is force-fitted to it.

In der DE-A 43 11 592 sind Kraftfahrzeug-Innenverkleidungsteile beschrieben, die sich durch eine hohe Steifigkeit auszeichnen. Eine spezielle Ausführungsform besteht aus zwei flächig miteinander verbundenen Lagen aus naturfaserverstärkten thermoplastischen Kunststoffen, wobei eine Lage Hohlkammern aufweist. Die Verkleidungsteile werden hergestellt, indem man auf ein mit Vertiefungen versehenes Unterwerkzeug zunächst ein vorerhitztes, flächiges Vlies aus Thermoplastfasern und Naturfasern auflegt und dieses Vlies durch Verpressen mittels eines mit entsprechenden Erhebungen versehenen ersten Oberwerkzeugs formt und zu einer kompakten Lage konsolidiert. Dann wird das erste Oberwerkzeug entfernt, ein zweites vorerhitzes Vlies wird auf die erste Lage aufgelegt und mittelsDE-A 43 11 592 describes motor vehicle interior trim parts that are characterized by high rigidity. A special embodiment consists of two layers of natural fiber-reinforced thermoplastics that are connected to one another in a flat manner, with one layer having hollow chambers. The trim parts are manufactured by first placing a preheated, flat fleece made of thermoplastic fibers and natural fibers on a lower tool provided with depressions and then shaping this fleece by pressing it using a first upper tool provided with corresponding elevations and consolidating it into a compact layer. The first upper tool is then removed, a second preheated fleece is placed on the first layer and

• ··

• ··

eines zweiten, nicht mit Erhebungen versehenen Oberwerkzeugs wieder durch Verpressen konsolidiert und an den erhabenen Stellen der ersten Lage mit dieser verbunden. Auf diese Weise bilden sich an den vertieften Stellen der unteren Lage Hohlkammern aus. Um ein Einfallen der Lagen zu verhindern, muß während der Herstellung des Verbundteils durch Düsennadeln Luft unter Druck in die Hohlkammern eingepreßt werden. Hierbei handelt es sich ersichtlich um ein recht kompliziertes Verfahren.a second upper tool, which is not provided with raised areas, is again consolidated by pressing and connected to the raised areas of the first layer. In this way, hollow chambers are formed in the recessed areas of the lower layer. In order to prevent the layers from collapsing, air under pressure must be pressed into the hollow chambers by means of nozzle needles during the manufacture of the composite part. This is obviously a very complicated process.

Der Erfindung lag nun die Aufgabe zugrunde, einen Automobil-Dachhimmel zu entwickeln, der nicht nur schwache Stöße abfedert, sondern zwar steif, aber doch so verformbar ist, daß er auch bei einem stärkeren Aufprall dem Fahrgast noch Schutz bietet. Ferner sollte der Dachhimmel schallschluckend sein, so daß er zur Lärmdämpfung geeignet ist. Der Dachhimmel sollte ferner einfach herstellbar sein. Diese Aufgaben sind bei dem erfindungsgemäßen Automobil- Dachhimmel gelöst.The invention was based on the task of developing an automobile roof liner that not only absorbs light impacts, but is also stiff but still deformable enough to protect the passenger even in the event of a strong impact. The roof liner should also be sound-absorbing so that it is suitable for noise reduction. The roof liner should also be easy to manufacture. These tasks are solved by the automobile roof liner according to the invention.

Der Dachhimmel besteht aus zwei Schichten, die beide eine faserverstärkte Thermoplastlage und, mit dieser haftend verbunden, eine geschlossenzellige Schaumfolie enthalten. Die Schaumfolien sind dabei einander gegenüberliegend angeordnet und miteinander verschweißt. Die Thermoplastlage kann alle üblichen faserbildenen Thermoplasten enthalten, vorzugsweise Polyolefine und insbesondere Polypropylen, weiterhin enthält sie nicht thermoplastische Fasern als Verstärkung. Geeignet sind bevorzugt solche aus Naturfasern, wie Flachs, Jute, Hanf, Sisal, Kenaf und Baumwolle, aber auch mineralische Fasern z.B. Glasfasern. Die Schaumfolie besteht aus einem vernetzten Polyolefin, vorzugsweise aus Polypropylen oder Polyethylen. Sie sollte möglichst geschlossenzellig sein, ihre Dichte liegt vorzugsweise zwischen 30 und 100 g/cm3. Die Dicke der Thermoplastlage beträgt vorzugsweise 2 bis 10 mm, die der Schaumfolie 1 bis 2 mm. Beide Schichten haben zusammen ein Flächengewicht von vorzugsweise 200 bis 2000, insbesondere von 400 bis 1500 g/m2.The headliner consists of two layers, both of which contain a fiber-reinforced thermoplastic layer and, adhesively bonded to this, a closed-cell foam film. The foam films are arranged opposite one another and welded together. The thermoplastic layer can contain all conventional fiber-forming thermoplastics, preferably polyolefins and in particular polypropylene, and it also contains non-thermoplastic fibers as reinforcement. Preferably suitable are those made from natural fibers such as flax, jute, hemp, sisal, kenaf and cotton, but also mineral fibers such as glass fibers. The foam film consists of a cross-linked polyolefin, preferably polypropylene or polyethylene. It should be as closed-cell as possible, and its density is preferably between 30 and 100 g/cm 3 . The thickness of the thermoplastic layer is preferably 2 to 10 mm, that of the foam film 1 to 2 mm. Both layers together have a basis weight of preferably 200 to 2000, in particular 400 to 1500 g/m 2 .

Erfindungswesentlich ist, daß die beiden Schichten nur an einer Vielzahl von Teilbereichen miteinander verschweißt sind, so daß sich zwischen den Schichten nicht verschweißte, Luftpolster enthaltende Bereiche befinden, an denen die obere Schicht aufgewölbt ist. Die verschweißten Bereiche können verschiedenartige Gestalt haben, sie können z.B. rund, oval oder rechteckig sein. Sie machen vorzugsweise 10 bis 80 % der Fläche des Dachhimmels aus, die Höhe der Aufwölbung kann 50 bis 300 %, bezogen auf die Dicke der oberen Schicht, betragen. Die ein Luftpolster enthaltende Aufwölbung ist bei einem starken Stoß nach innen verformbar und kann dadurch einen Aufprall abpuffem.What is essential to the invention is that the two layers are only welded together in a large number of partial areas, so that there are non-welded areas between the layers containing air cushions, where the upper layer is curved. The welded areas can have various shapes, for example they can be round, oval or rectangular. They preferably make up 10 to 80% of the surface area of the roof liner, and the height of the curvature can be 50 to 300%, based on the thickness of the upper layer. The curvature containing an air cushion can be deformed inwards in the event of a strong impact and can therefore cushion an impact.

Auf die obere, dem Blechdach zugewandte Schicht des Dachhimmels kann ein Abdeckvlies, z.B. aus Polyesterfasern oder eine Aluminiumfolie aufgebracht sein; an der unteren, dem Fahrgastraum zugewandten Seite kann eine 1 bis 3 mm dicke Polsterschicht aus Kunststoffschaum, z.B. auf Basis von Polyurethan oder Polypropylen, sowie eine Dekorschicht, z.B. ein Vlies oder eine Folie, angebracht sein.A covering fleece, e.g. made of polyester fibres or aluminium foil, can be applied to the upper layer of the headliner facing the metal roof; a 1 to 3 mm thick padding layer made of plastic foam, e.g. based on polyurethane or polypropylene, and a decorative layer, e.g. a fleece or foil, can be applied to the lower side facing the passenger compartment.

Fig. 1 zeigt einen Querschnitt durch einen Dachhimmel. Mit 1 bzw. 2 sind die Thermoplastlage bzw. die Schaumfolie der oberen Schicht bezeichnet, mit 1'bzw. 2' die Thermoplastlage der unteren Schicht. Die beiden Schichten sind nur an den Teilbereichen 3 miteinander verschweißt, wodurch sich die Hohlräume 4 ergeben.Fig. 1 shows a cross-section through a roof liner. The thermoplastic layer and the foam film of the upper layer are designated 1 and 2, respectively, and the thermoplastic layer of the lower layer is designated 1' and 2'. The two layers are only welded together at the partial areas 3, which creates the cavities 4.

Fig. 2 zeigt den Dachhimmel der Fig. 1 von oben gesehen. Mit 3 sind wieder die verschweißten Teilbereiche bezeichnet, mit 4 die nach oben aufgewölbten Hohlräume. Man sieht, daß diese miteinander verbunden sind. Dadurch ergibt sich die Möglichkeit, Kabelkanäle oder Röhren, z.B. für die Klimaanlage, einzulegen und dadurch unsichtbar in dem Dachhimmel zu integrieren.Fig. 2 shows the roof liner of Fig. 1 seen from above. 3 again indicates the welded sections, 4 the hollow spaces that are curved upwards. You can see that these are connected to each other. This makes it possible to insert cable ducts or tubes, e.g. for the air conditioning system, and thus integrate them invisibly into the roof liner.

Figur 3 zeigt einen Querschnitt durch einen Dachhimmel, der Einfachheit halber an einer Stelle, an der sich kein Hohlraum befindet. Hier sind das in einer bevor-Figure 3 shows a cross-section through a roof liner, for the sake of simplicity at a point where there is no cavity. Here, the

so·&ugr;.·.:.so·&ugr;.·.:.

zugten Ausführungsform angebrachte Abdeckvlies 5 und die Polsterschicht 6 sowie die Dekorschicht 7, eingezeichnet.The cover fleece 5 attached in the preferred embodiment and the cushioning layer 6 as well as the decorative layer 7 are shown.

Bei der Herstellung des erfindungsgemäßen Dachhimmels werden zunächst die Ausgangsmaterialien für die beiden Schichten hergestellt. Dazu werden kontinuierlich Bahnen der Schaumfolie und eines Mischvlieses aus Thermoplastfasern und Naturfasern oder Mineralfasern zusammengeführt. Dabei werden die jeweiligen einander zugewandten Oberflächen der Bahnen auf Temperaturen oberhalb des Erweichungspunktes des Thermoplasten, z.B. durch Anblasen mit Heißluft, erwärmt; dann werden die beiden Bahnen, vorzugsweise mittels Walzen, miteinander verpreßt. Dadurch ergibt sich eine gute Verbindung von Vlies und Schaumfolie und es wird eine Verbundbahn erhalten, die noch flexibel ist.When producing the roof liner according to the invention, the starting materials for the two layers are first produced. To do this, strips of foam film and a mixed fleece made of thermoplastic fibers and natural fibers or mineral fibers are continuously brought together. The surfaces of the strips facing each other are heated to temperatures above the softening point of the thermoplastic, e.g. by blowing hot air; then the two strips are pressed together, preferably using rollers. This results in a good bond between the fleece and foam film and a composite strip is obtained that is still flexible.

Von dieser Verbundbahn werden passende Zuschnitte abgeschnitten. Ein über den Schmelzpunkt des Thermoplasten vorgewärmter Zuschnitt, der im fertigen Dachhimmel die Oberschicht bildet, wird dann, mit der Schaumfolienseite nach oben, in das mit noppenförmigen Erhebungen versehene Unterwerkzeug einer Presse eingelegt. Auf diesen Zuschnitt wird ein weiterer vorgewärmter Zuschnitt, der in dem fertigen Dachhimmel die Unterschicht bildet, mit der Schaumfolienseite nach unten aufgelegt. Gleichzeitig wird die Presse mit einem glatten Oberwerkzeug luftdicht abgeschlossen und durch seitlich angebrachte Düsen wird Luft zwischen die Zuschnitte eingeblasen. Durch die beiden geschlossenzelligen Schaumfolien kann die Luft nicht entweichen, so daß durch den sich aufbauenden Luftdruck der untere Zuschnitt auf das Unterwerkzeug gepreßt wird und sich dort um die Noppen herum dicht anlegt. Die Zuschnitte berühren sich nur an den Auflagestellen der erhöhten Noppen, dazwischen bildet sich ein zusammenhängender Hohlraum mit einem Luftpolster aus. Die - im Fall von Polypropylen als Thermoplast - 180 bis 200 0C heißen Zuschnitte werden dann miteinander verpreßt. Dabei schmelzen die Thermoplastfasern vollständig auf, während das vernetzte Polyolefin der Schaumfolie nicht aufschmilzt, sondern nur erweicht, so daß dasSuitable blanks are cut from this composite sheet. A blank that has been preheated above the melting point of the thermoplastic and forms the upper layer in the finished headliner is then placed, with the foam foil side facing upwards, into the lower tool of a press that has raised bumps. Another preheated blank, which forms the lower layer in the finished headliner, is placed on top of this blank, with the foam foil side facing downwards. At the same time, the press is sealed airtight with a smooth upper tool and air is blown in between the blanks through nozzles attached to the side. The air cannot escape through the two closed-cell foam films, so that the lower blank is pressed onto the lower tool by the building up air pressure, where it fits tightly around the bumps. The blanks only touch each other at the contact points of the raised bumps; a continuous hollow space with an air cushion forms between them. The cut pieces - in the case of polypropylene as a thermoplastic - at 180 to 200 0 C are then pressed together. The thermoplastic fibers melt completely, while the cross-linked polyolefin of the foam film does not melt, but only softens, so that the

Luftpolster formstabil erhalten bleibt. An den Berührungsstellen der beiden Schichten verschweißen die erweichten Schaumfolien miteinander. In der kalten Presse erstarrt dann der Thermoplast wieder, das Vlies konsolidiert und bildet die naturfaserverstärkte Thermoplastlage.The air cushion keeps its shape. The softened foam foils fuse together at the contact points between the two layers. The thermoplastic then solidifies again in the cold press, the fleece consolidates and forms the natural fiber-reinforced thermoplastic layer.

Vor dem Verpressen können an der Oberseite des oberen Zuschnitts die Polsterschicht 6 und die Dekorschicht 7 und an der Unterseite des unteren Zuschnitts das Abdeckvlies 5 angelegt werden. Diese Schichten werden mitverpreßt und werden über die aufschmelzenden Thermoplastfasern des Faservlieses mit den Grundschichten verbunden. Es versteht sich, daß der bei der beschriebenen Herstellung oben liegende Zuschnitt (mit Polster- und Dekorschicht) im eingebauten Zustand die Unterseite des Dachhimmels zum Fahrgastraum hin bildet.Before pressing, the upholstery layer 6 and the decorative layer 7 can be placed on the top of the upper cut and the covering fleece 5 on the underside of the lower cut. These layers are pressed together and are connected to the base layers via the melting thermoplastic fibers of the fiber fleece. It goes without saying that the cut on top in the described production process (with upholstery and decorative layer) forms the underside of the roof liner facing the passenger compartment when installed.

Claims (8)

1. Automobil-Dachhimmel, bestehend aus einer oberen Schicht und einer unteren Schicht, wobei beide Schichten eine faserverstärkte Thermoplastlage (1, 1') und, mit dieser haftend verbunden, eine geschlossenzellige Schaumfolie (2, 2') aus einem vernetzten Polyolefin enthalten, und wobei die Schaumfolien einander gegenüberliegend angeordnet und miteinander verschweißt sind, dadurch gekennzeichnet, daß die beiden Schichten nur an einer Vielzahl von Teilbereichen (3) verschweißt sind, und daß sich zwischen den Schichten nicht verschweißte, Luftpolster enthaltende Bereiche (4) befinden, an denen die obere Schicht aufgewölbt ist. 1. Automobile roof liner, consisting of an upper layer and a lower layer, both layers containing a fiber-reinforced thermoplastic layer ( 1 , 1 ') and, adhesively connected to this, a closed-cell foam film ( 2 , 2 ') made of a cross-linked polyolefin, and the foam films being arranged opposite one another and welded to one another, characterized in that the two layers are welded only in a plurality of partial areas ( 3 ), and that between the layers there are non-welded areas ( 4 ) containing air cushions, where the upper layer is curved. 2. Dachhimmel nach Anspruch 1, dadurch gekennzeichnet, daß das Flächengewicht der beiden Schichten zusammen zwischen 200 und 2000 g/m2, vorzugsweise zwischen 400 und 1500 g/m2 liegt. 2. Roof liner according to claim 1, characterized in that the weight per unit area of the two layers together is between 200 and 2000 g/m 2 , preferably between 400 and 1500 g/m 2 . 3. Dachhimmel nach Anspruch 1, dadurch gekennzeichnet, daß die Dicke der Schaumfolien (2 bzw. 2') zwischen 1 und 2 mm liegt. 3. Roof liner according to claim 1, characterized in that the thickness of the foam foils ( 2 or 2 ') is between 1 and 2 mm. 4. Dachhimmel nach Anspruch 1, dadurch gekennzeichnet, daß auf die obere Schicht noch ein Abdeckvlies (5) oder eine Aluminiumfolie aufgebracht ist. 4. Roof liner according to claim 1, characterized in that a covering fleece ( 5 ) or an aluminum foil is applied to the upper layer. 5. Dachhimmel nach Anspruch 1, dadurch gekennzeichnet, daß an der unteren Schicht noch eine 1 bis 2,5 mm dicke Schicht (6) aus Kunststoffschaum und eine Dekorschicht (7) angebracht sind. 5. Roof liner according to claim 1, characterized in that a 1 to 2.5 mm thick layer ( 6 ) of plastic foam and a decorative layer ( 7 ) are attached to the lower layer. 6. Dachhimmel nach Anspruch 1, dadurch gekennzeichnet, daß die verschweißten Bereiche (3) 10 bis 80% der Fläche des Dachhimmels ausmachen. 6. Roof liner according to claim 1, characterized in that the welded areas ( 3 ) make up 10 to 80% of the area of the roof liner. 7. Dachhimmel nach Anspruch 1, dadurch gekennzeichnet, daß der Thermoplast der Thermoplastlage (1, 1') Polypropylen und das Polyolefin der Schaumfolie (2, 2') Polypropylen oder Polyethylen sind. 7. Roof liner according to claim 1, characterized in that the thermoplastic of the thermoplastic layer ( 1 , 1 ') is polypropylene and the polyolefin of the foam film ( 2 , 2 ') is polypropylene or polyethylene. 8. Dachhimmel nach Anspruch 1, dadurch gekennzeichnet, daß die Luftpolster enthaltenden Bereiche (4) untereinander verbunden sind und Kabelkanäle und Röhren enthalten können. 8. Roof liner according to claim 1, characterized in that the air cushion-containing regions ( 4 ) are interconnected and can contain cable ducts and tubes.
DE20102194U 2001-02-08 2001-02-08 Automotive headlining Expired - Lifetime DE20102194U1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
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DE10227406A1 (en) * 2002-06-20 2004-01-08 Volkswagen Ag Shaped inner element of a roof, in particular, for a motor vehicle comprises an energy absorption layer which faces the external roof shell and constitutes an integral part of the inner element
US6984444B2 (en) 2000-03-15 2006-01-10 Lear Corporation Interior lining component
DE102004048504A1 (en) * 2004-10-05 2006-04-13 Rehau Ag + Co Bodywork element comprises an absorber body which serves for dissipation of impact energy and consists of a plurality of plastic buckling elements with support walls
USRE44893E1 (en) 2004-03-26 2014-05-13 Hanwha Azdel, Inc. Fiber reinforced thermoplastic sheets with surface coverings
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DE202004006337U1 (en) * 2004-04-19 2004-07-29 Carcoustics Tech Center Gmbh Air guiding element for an instrument panel of a motor vehicle
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US6984444B2 (en) 2000-03-15 2006-01-10 Lear Corporation Interior lining component
DE10132192B4 (en) 2001-07-03 2021-10-07 Volkswagen Ag Side wall cladding in a vehicle
DE10254488A1 (en) * 2002-04-01 2003-10-16 Matthias Trautmann Air bag component for automobile passenger compartment has pressurized air chamber on side facing passenger compartment for providing cushioning in accident situation
DE10227406A1 (en) * 2002-06-20 2004-01-08 Volkswagen Ag Shaped inner element of a roof, in particular, for a motor vehicle comprises an energy absorption layer which faces the external roof shell and constitutes an integral part of the inner element
USRE44893E1 (en) 2004-03-26 2014-05-13 Hanwha Azdel, Inc. Fiber reinforced thermoplastic sheets with surface coverings
DE102004048504A1 (en) * 2004-10-05 2006-04-13 Rehau Ag + Co Bodywork element comprises an absorber body which serves for dissipation of impact energy and consists of a plurality of plastic buckling elements with support walls

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DE10160442B4 (en) 2007-09-27

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