DE10143883A1 - Multi-layer vehicle interior panel manufacture involves molding a skin onto a prefabricated carrier layer without adhesives - Google Patents

Multi-layer vehicle interior panel manufacture involves molding a skin onto a prefabricated carrier layer without adhesives

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Publication number
DE10143883A1
DE10143883A1 DE10143883A DE10143883A DE10143883A1 DE 10143883 A1 DE10143883 A1 DE 10143883A1 DE 10143883 A DE10143883 A DE 10143883A DE 10143883 A DE10143883 A DE 10143883A DE 10143883 A1 DE10143883 A1 DE 10143883A1
Authority
DE
Germany
Prior art keywords
layer
mold
decorative skin
connecting layer
skin
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
DE10143883A
Other languages
German (de)
Inventor
Richard Hahnekamp
Peter Walter
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.)
Intier Automotive Eybl GmbH Ebergassing and Co OHG
Original Assignee
Magna Eybl 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 Magna Eybl GmbH filed Critical Magna Eybl GmbH
Priority to DE10143883A priority Critical patent/DE10143883A1/en
Publication of DE10143883A1 publication Critical patent/DE10143883A1/en
Ceased legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/02—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles
    • B29C43/14—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles in several steps
    • B29C43/146—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles in several steps for making multilayered articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/02—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles
    • B29C43/18—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles incorporating preformed parts or layers, e.g. compression moulding around inserts or for coating articles
    • B29C43/183—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles incorporating preformed parts or layers, e.g. compression moulding around inserts or for coating articles the preformed layer being a lining, e.g. shaped in the mould before compression moulding, or a preformed shell adapted to the shape of the mould
    • B29C43/184—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles incorporating preformed parts or layers, e.g. compression moulding around inserts or for coating articles the preformed layer being a lining, e.g. shaped in the mould before compression moulding, or a preformed shell adapted to the shape of the mould shaped by the compression of the material during moulding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
    • B29C45/14778—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles the article consisting of a material with particular properties, e.g. porous, brittle
    • B29C45/14811—Multilayered articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C51/00—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor
    • B29C51/16—Lining or labelling
    • 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
    • B32B27/12—Layered products comprising a layer of synthetic resin next to a fibrous or filamentary layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2791/00—Shaping characteristics in general
    • B29C2791/001—Shaping in several steps
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
    • B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C51/00—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor
    • B29C51/08—Deep drawing or matched-mould forming, i.e. using mechanical means only
    • B29C51/082—Deep drawing or matched-mould forming, i.e. using mechanical means only by shaping between complementary mould parts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C51/00—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor
    • B29C51/26—Component parts, details or accessories; Auxiliary operations
    • B29C51/42—Heating or cooling
    • B29C51/428—Heating or cooling of moulds or mould parts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2023/00—Use of polyalkenes or derivatives thereof as moulding material
    • B29K2023/10—Polymers of propylene
    • B29K2023/12—PP, i.e. polypropylene
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2075/00—Use of PU, i.e. polyureas or polyurethanes or derivatives thereof, as moulding material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
    • B29K2105/04—Condition, form or state of moulded material or of the material to be shaped cellular or porous
    • B29K2105/045—Condition, form or state of moulded material or of the material to be shaped cellular or porous with open cells
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
    • B29K2105/06—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts
    • B29K2105/08—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts of continuous length, e.g. cords, rovings, mats, fabrics, strands or yarns
    • B29K2105/0809—Fabrics
    • B29K2105/0818—Fleece
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
    • B29K2105/06—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts
    • B29K2105/12—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts of short lengths, e.g. chopped filaments, staple fibres or bristles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2713/00—Use of textile products or fabrics for preformed parts, e.g. for inserts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2009/00—Layered products
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/30—Vehicles, e.g. ships or aircraft, or body parts thereof
    • B29L2031/3005—Body finishings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/30—Vehicles, e.g. ships or aircraft, or body parts thereof
    • B29L2031/3005—Body finishings
    • B29L2031/3014—Door linings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/30—Vehicles, e.g. ships or aircraft, or body parts thereof
    • B29L2031/3005—Body finishings
    • B29L2031/3041—Trim panels
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)

Abstract

A composite part comprising an intermediate connecting layer(12) and a rigid carrier layer(10) are prefabricated. A decorative plastic skin(14) is then molded directly onto the free surface of the connecting layer in a molding tool(20). An Independent claim is also included for an vehicle interior panel manufactured by the claimed method in which a decorative layer is applied onto a prefabricated base without using adhesives. Preferred Features: A grained surface is impressed into the visible side of the decorative skin by a tool wall. The skin may be formed directly onto a prefabricated part by placing a thermoformable skin preform in one half of the molding tool and closing the tool. Alternatively a skin may be cast or injected onto an intermediate layer in a closed tool. In the injection method plastic may be injected via a sprue through the composite part.

Description

Die Erfindung betrifft ein Verfahren zur Herstellung eines mehrschichtigen Fahrzeuginnenteils bei welchem ein mit einer porösen Verbindungsschicht versehenes formsteifes Trägerteil als Verbundformteil vorgefertigt wird und in einem weiteren Verfahrensschritt eine Dekorhaut aus Kunststoff auf die Verbindungsschicht aufgebracht wird. Die Erfindung betrifft weiter ein entsprechendes Fahrzeuginnenteil. The invention relates to a method for manufacturing of a multi-layer vehicle interior in which one with a porous connecting layer Rigid support part prefabricated as a composite molded part is and in a further process step Decorative skin made of plastic on the connection layer is applied. The invention further relates to a corresponding vehicle interior.

Bei der Herstellung von Innenteilen für Kraftfahrzeuge, beispielsweise Türverkleidungen ist es bekannt, eine vorgefertigte dekorative Formhaut aus Kunststoff auf einer als Vliesschicht ausgebildeten Verbindungsschicht aufzukleben. Die mit dem Trägerteil fest verbundene Vliesschicht dient dabei als Haftvermittler, da die eingesetzten Materialien wegen ihrer Oberflächeneigenschaften nur schwer direkt verklebt werden können. Das erforderliche Auftragen der Klebstoffschicht bedingt aber einen zusätzlichen Arbeitsschritt und wirft auch sonst Probleme im Arbeitsablauf wie etwaige sichtseitige Beschädigungen der Dekorhaut und zusätzliche Schadstoffemission auf. In the manufacture of interior parts for motor vehicles, for example door panels are known to be a prefabricated decorative molded skin made of plastic a connecting layer formed as a fleece layer to stick. The firmly connected to the support part Fleece layer serves as an adhesion promoter, since the used materials because of their Surface properties are difficult to glue directly. The necessary application of the adhesive layer conditionally but an additional step and also throws otherwise problems in the workflow such as any visible damage to the decorative skin and additional Emission of pollutants.

Ausgehend hiervon liegt der Erfindung die Aufgabe zugrunde, das eingangs angegebene Herstellungsverfahren und ein entsprechendes Erzeugnis dahingehend zu verbessern, daß die genannten Nachteile vermieden werden und eine einfache und wirtschaftliche Fertigung unter Berücksichtigung der Qualitäts- und Funktionsanforderungen ermöglicht wird. Proceeding from this, the object of the invention based on the manufacturing process specified at the beginning and a corresponding product to that effect improve that the disadvantages mentioned are avoided and a simple and economical production under Taking into account the quality and Functional requirements is made possible.

Zur Lösung dieser Aufgabe wird die im Patentanspruch 1 bzw. 14 angegebene Merkmalskombination vorgeschlagen. Vorteilhafte Ausgestaltungen und Weiterbildungen der Erfindung ergeben sich aus den abhängigen Ansprüchen. To solve this problem, that in claim 1 or 14 specified combination of features proposed. Advantageous refinements and developments of Invention result from the dependent claims.

Die Erfindung geht von dem Gedanken aus, durch einen Formprozeß zugleich die endgültige Formgebung der Dekorhaut wie auch deren Verbindung mit dem tragenden Verbundformteil zu erreichen. Dementsprechend wird erfindungsgemäß vorgeschlagen, daß die Dekorhaut in einem Formwerkzeug direkt an der freien Oberfläche der Verbindungsschicht des Verbundformteils angeformt und dabei klebstofffrei verankert wird. Auf diese Weise wird ein formschlüssiges Verkrallen der beim Anformen in die Verbindungsschicht eindringenden Dekorhaut erreicht. The invention is based on the idea of one Form process at the same time the final shaping of the Decorative skin as well as its connection with the load-bearing To achieve composite molding. Accordingly proposed according to the invention that the decorative skin in one Forming tool directly on the free surface of the Formed connection layer of the composite molding and is anchored adhesive-free. That way a positive clawing when molding into the Connection layer penetrating decorative skin reached.

Damit kann eine dauerhafte und auch bei hoher Klimabeanspruchung vollflächig haltbare Verbindung gewährleistet werden, ohne daß ein auch im Hinblick auf das Recycling nachteiliger Klebstoffauftrag erforderlich wäre. It can be permanent and even at high Climatic stress all-over durable connection can be guaranteed without a with regard to the Recycling of disadvantageous adhesive application required would.

Gemäß einer besonders bevorzugten Ausgestaltung der Erfindung wird durch eine Formwand des Formwerkzeugs eine Narbung in die Dekorhaut sichtseitig eingeformt. Durch diese Maßnahme wird gewährleistet, daß die dekorative Oberfläche beim Verbindungsprozeß keinen Belastungen ausgesetzt ist, wie dies bei vollständig vorgefertigten Formhäuten der Fall wäre. According to a particularly preferred embodiment of the Invention is through a mold wall of the mold Graining molded into the decorative skin on the visible side. By this measure ensures that the decorative No stress on the surface during the connection process is exposed, as is the case with fully prefabricated Form skins would be the case.

Eine vorteilhafte Variante der Erfindung sieht vor, daß die Dekorhaut durch Umformen aus einem in das Formwerkzeug eingelegten Vorformling gebildet wird. Dabei kann die Dekorhaut als warmformbares Halbzeug in eine Formhälfte des geöffneten Formwerkzeugs eingelegt, durch Schließen des erwärmten Formwerkzeugs in die Verbindungsschicht des in der anderen Formhälfte befindlichen Verbundformteils eingepreßt und sodann endverfestigt werden. An advantageous variant of the invention provides that the decorative skin by reshaping into one Forming tool inserted preform is formed. It can the decorative skin as a thermoformable semi-finished product in one Mold half of the opened mold inserted, through Closing the heated mold in the Connection layer of that in the other half of the mold Pressed composite molded part and then finally solidified become.

Alternativ dazu wird erfindungsgemäß vorgeschlagen, daß die Dekorhaut durch Urformen aus einem bei geschlossenem Formwerkzeug an die Verbindungsschicht angegossenen Gießmaterial erzeugt wird. Hierbei ist es vorgesehen, daß das Verbundformteil als Einlegeteil in das Formwerkzeug eingelegt wird, und daß ein flüssiges Gießmaterial bei geschlossenem Formwerkzeug in einen im Bereich der freien Oberfläche der Verbindungsschicht freigehaltenen Formspalt zur Bildung der Dekorhaut eingespritzt wird. Um Angußstellen auf der Sichtseite zu vermeiden, ist es von Vorteil, wenn das Gießmaterial über einen durch das Verbundformteil hindurchgeführten Angußkanal eingespritzt wird. Vorteilhafterweise wird die Dekorhaut aus einem mehrkomponentigen Reaktionskunststoff auf Polyurethanbasis gebildet. Alternatively, the invention proposes that the decorative skin through original forms from one closed mold cast on the connection layer Casting material is generated. Here it is provided that the composite molding as an insert in the Molding tool is inserted, and that a liquid Pouring material into a closed mold Area of the free surface of the connection layer free form gap to form the decorative skin is injected. To gate points on the visible side too avoid it is beneficial if the casting material via a led through the composite molding Sprue is injected. Advantageously the decorative skin from a multi-component Reaction plastic made of polyurethane.

Eine weitere Verbesserung im Herstellungsablauf sieht vor, daß das Verbundformteil in einem einstufigen Prozess durch Hinterspritzen, Hinterpressen oder Preßformen der Verbindungsschicht mit einer vorzugsweise thermoplastischen Formmasse vorgefertigt wird. Another improvement in the manufacturing process looks before that the composite molding in a one-step Process by back injection, back pressing or Press molding the connecting layer with a preferably thermoplastic molding compound is prefabricated.

In ökonomischer und ökologischer Hinsicht ist es von Vorteil, wenn das Trägerteil aus Polypropylen geformt wird. In economic and ecological terms, it is from Advantage if the carrier part is molded from polypropylene becomes.

Vorteilhafterweise ist die Verbindungsschicht als Vliesschicht und insbesondere als textiler Faservlies, vorzugsweise einem Polyesterfaservlies ausgebildet. Denkbar ist es auch, daß die Verbindungsschicht aus einem offenporigen Schaumstoff, vorzugsweise einem Polyurethanschaum besteht. The connection layer is advantageously as Fleece layer and in particular as a textile fiber fleece, preferably a polyester fiber fleece. It is also conceivable that the connection layer is made of an open-cell foam, preferably one There is polyurethane foam.

Im Hinblick auf ein Verfahrenserzeugnis wird die eingangs genannte Aufgabe dadurch gelöst, daß die Dekorhaut direkt an der Verbindungsschicht des Verbundformteils angeformt und daran klebstofffrei verankert ist. With regard to a process product, the initially mentioned object achieved in that the Decorative skin directly on the connection layer of the Composite molded part is molded and anchored to it free of adhesive.

Im folgenden wird die Erfindung anhand der in der Zeichnung in schematischer Weise dargestellten Ausführungsbeispiele näher erläutert. Es zeigen The invention is based on the in the Drawing shown in a schematic manner Exemplary embodiments explained in more detail. Show it

Fig. 1 ein mehrschichtiges Innenverkleidungsteil für ein Kraftfahrzeug in geschnittener Darstellung; Figure 1 is a multi-layer interior trim part for a motor vehicle in a sectional view.

Fig. 2 ein die Basis des Innenverkleidungsteils bildendes Vliesformteil in einem Gießwerkzeug im Schnitt; Figure 2 is a the base of the interior trim part forming nonwoven molding in a molding tool in section.

Fig. 3 das Angießen einer Dekorhaut an die Vliesschicht des Vliesformteils in einer Fig. 2 entsprechenden Darstellung; . FIG. 3 shows the casting of a decorative skin on the nonwoven layer of the nonwoven molding in a representation corresponding to Figure 2;

Fig. 4 ein Vliesformteil und ein daran anformbares Halbzeug in einem geöffneten Warmformwerkzeug im Schnitt; und Fig. 4 is a nonwoven mold member and a semi-finished anformbares thereto in an open thermoforming tool in section; and

Fig. 5 das Warmformwerkzeug im geschlossenen Zustand zur Bildung der Dekorhaut aus dem Halbzeug in einer Fig. 4 entsprechenden Darstellung. Fig. 5 corresponding to the hot mold in the closed condition for forming the decorative skin from the semi-finished product in a Fig. 4 representation.

Das in der Zeichnung dargestellte Verkleidungsteil 1, beispielsweise eine Türinnenverkleidung für ein Kraftfahrzeug besteht aus einem formsteifen Trägerteil 10, einer Vliesschicht 12 und einer sichtseitigen, im Einbauzustand zum Fahrzeuginnenraum weisenden Dekorhaut 14. Die Vliesschicht 12 bildet dabei eine Verbindungsschicht, die eine klebstofffreie Verbindung des Trägerteils 10 und der Dekorhaut 14 ermöglicht. The trim part 1 shown in the drawing, for example a door interior trim for a motor vehicle, consists of a dimensionally stable support part 10 , a fleece layer 12 and a visible skin 14 facing the vehicle interior when installed. The fleece layer 12 forms a connection layer that enables a glue-free connection of the carrier part 10 and the decorative skin 14 .

Zur Herstellung eines solchen Verkleidungsteils 10 wird zunächst in einem Direktverfahren ein Verbundformteil bzw. Vliesformteil 16 aus dem Trägerteil 10 und der Vliesschicht 12 gebildet. Dies kann dadurch erfolgen, daß ein Polyesterfaservlies als Flächengebilde in ein Spritzgußwerkzeug eingelegt und mit einem thermoplastischen Kunststoff, vorzugsweise Polypropylen hinterspritzt wird. Alternativ ist es auch möglich, ein solches Vliesformteil durch Hinterpressen einer Vliesschicht mit strangförmig aufgetragenem Trägermaterial oder durch Preßformen eines geeigneten Halbzeugs gegen eine Vliesschicht zu fertigen. In jedem Fall wird dabei ein Formteil mit einer festgebundenen Vliesoberfläche entsprechend dem Formnest des Werkzeugs erhalten. To produce such a trim part 10 , a composite molded part or non-woven molded part 16 is first formed from the carrier part 10 and the fleece layer 12 in a direct process. This can be done in that a polyester fiber fleece is placed as a flat structure in an injection molding tool and back-injected with a thermoplastic, preferably polypropylene. Alternatively, it is also possible to manufacture such a nonwoven molded part by pressing a nonwoven layer with a support material applied in the form of a strand or by pressing a suitable semi-finished product against a nonwoven layer. In any case, a molded part with a firmly bonded fleece surface corresponding to the mold cavity of the tool is obtained.

Auf das vorgefertige Vliesformteil 16 wird in einem weiteren Verfahrensschritt die Dekorhaut 14 aufgebracht. Dies erfolgt dadurch, daß die Dekorhaut direkt an der freien Oberfläche 18 der Vliesschicht 12 angeformt und dabei klebstofffrei verankert wird, wobei das Hautmaterial bei dem Formgebungsprozeß in die grobe Vliesoberfläche eindringt und sich formschlüssig darin verkrallt. The decorative skin 14 is applied to the prefabricated nonwoven molded part 16 in a further process step. This takes place in that the decorative skin is molded directly onto the free surface 18 of the nonwoven layer 12 and anchored free of adhesive in the process, the skin material penetrating into the rough nonwoven surface during the shaping process and clawing into it in a form-fitting manner.

Gemäß dem in Fig. 2 und 3 veranschaulichten Ausführungsbeispiel wird die Dekorhaut 14 in einem Gießwerkzeug 20 an das Vliesformteil 16 angegossen. Hierzu wird das Vliesformteil 16 in die komplementär geformte Werkzeughälfte 22 eingelegt und das Werkzeug 20 geschlossen, wobei in der anderen Werkzeughälfte 24 gegenüber der freien Oberfläche 18 der Vliesschicht 12 ein Formspalt 26 entsprechend der gewünschten Wandstärke (ca. 0,5 bis 1,5 mm) der zu formenden Dekorhaut 14 freigehalten bleibt. Die den Formspalt 26 begrenzende Formwand 28 ist mit einer nicht gezeigten Oberflächenstruktur versehen, um eine lederähnliche Narbung auf der Dekorhaut 14 sichtseitig auszubilden. According to the exemplary embodiment illustrated in FIGS . 2 and 3, the decorative skin 14 is cast onto the nonwoven molded part 16 in a casting tool 20 . For this purpose, the non-woven molded part is inserted into the complementary shaped tool half 22 16 and the tool 20 is closed, wherein in the other half-mold 24 with respect to the free surface 18 of the fabric layer 12, a mold gap 26 corresponding to the desired wall thickness (about 0.5 to 1.5 mm ) the decorative skin 14 to be molded is kept free. The mold wall 28 delimiting the mold gap 26 is provided with a surface structure, not shown, in order to form a leather-like grain on the decorative skin 14 on the visible side.

In das geschlossene Werkzeug 20 wird ein flüssiges Gießmaterial, beispielsweise ein mehrkomponentiger Reaktionskunststoff auf Polyurethanbasis, über den Angußkanal 30 in den Formspalt 26 eingespritzt, unter Bildung der Dekorhaut 14 ausgehärtet und danach das Fertigteil 10 aus dem Werkzeug 20 entnommen. Um Angußstellen auf der Sichtseite 32 der Dekorhaut 14 zu vermeiden, kann der Angußkanal 28 über die Werkzeughälfte 22 durch einen geeigneten Durchbruch des Vliesformteils 16 hindurchgeführt werden. In the closed mold 20, a liquid casting material, for example a multi-component reaction plastic based on polyurethane, is injected via the runner 30 into the mold gap 26 is cured to form the decorative skin 14 and then removed the finished part 10 from the tool 20th In order to avoid sprue points on the visible side 32 of the decorative skin 14 , the sprue channel 28 can be passed over the mold half 22 through a suitable opening in the nonwoven molded part 16 .

Wie in Fig. 3 und 4 veranschaulicht, ist es auch möglich, die Dekorhaut 14 durch Umformen aus einem in das geöffnete Formwerkzeug 20 eingelegten Vorformling oder Halbzeug 34 zu bilden. Als Halbzeug 34 wäre auch der Einsatz einer unter Erwärmung plastifizierbaren PVC-, PP- oder TPU-Folie denkbar, die durch Schließen des zugleich als Arbeits- bzw. Preßwerkzeug dienenden erwärmten Formwerkzeugs 22 in die Vliesschicht 12 des Vliesformteils 16 eingepreßt und sodann unter Abkühlung endverfestigt wird. As illustrated in FIGS . 3 and 4, it is also possible to form the decorative skin 14 by shaping from a preform or semi-finished product 34 inserted into the opened mold 20 . The semi-finished product 34 would also be conceivable to use a PVC, PP or TPU film which can be plasticized under heating, which is pressed into the nonwoven layer 12 of the nonwoven molded part 16 by closing the heated mold 22 , which also serves as a working or pressing tool, and then solidified with cooling becomes.

Zusammenfassend ist folgendes festzuhalten: Die Erfindung betrifft ein Verfahren zur Herstellung eines mehrschichtigen Fahrzeuginnenteils 1 bei welchem ein mit einer Vliesschicht 12 versehenes formsteifes Trägerteil 10 als Vliesformteil 16 vorgefertigt wird und in einem weiteren Verfahrensschritt eine Dekorhaut 14 aus Kunststoff auf die Vliesschicht 12 aufgebracht wird. Um die Herstellung weiter zu vereinfachen, wird vorgeschlagen, daß die Dekorhaut 14 in einem Formwerkzeug 20 direkt an der freien Oberfläche 18 der Vliesschicht 12 des Vliesformteils 16 angeformt und dabei klebstofffrei verankert wird. In summary, the following can be stated: The invention relates to a method for producing a multilayer vehicle interior part 1, in which a rigid support part 10 provided with a fleece layer 12 is prefabricated as a fleece molded part 16 and a decorative skin 14 made of plastic is applied to the fleece layer 12 in a further method step. In order to further simplify production, it is proposed that the decorative skin 14 be molded in a molding tool 20 directly on the free surface 18 of the nonwoven layer 12 of the nonwoven molded part 16 and anchored free of adhesive in the process.

Claims (14)

1. Verfahren zur Herstellung eines mehrschichtigen Fahrzeuginnenteils (1) bei welchem ein mit einer porösen Verbindungsschicht (12) versehenes formsteifes Trägerteil (10) als Verbundformteil (16) vorgefertigt wird und in einem weiteren Verfahrensschritt eine Dekorhaut (14) aus Kunststoff auf die Verbindungsschicht (12) aufgebracht wird, dadurch gekennzeichnet, daß die Dekorhaut (14) in einem Formwerkzeug (20) direkt an der freien Oberfläche (18) der Verbindungsschicht (12) des Verbundformteils (16) angeformt und dabei klebstofffrei verankert wird. 1. A method for producing a multi-layer vehicle interior part ( 1 ) in which a dimensionally stable support part ( 10 ) provided with a porous connecting layer ( 12 ) is prefabricated as a composite molded part ( 16 ) and in a further process step a decorative skin ( 14 ) made of plastic on the connecting layer ( 12 ) is applied, characterized in that the decorative skin ( 14 ) is molded in a molding tool ( 20 ) directly on the free surface ( 18 ) of the connecting layer ( 12 ) of the composite molding ( 16 ) and anchored without adhesive. 2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß durch eine Formwand (28) des Formwerkzeugs (20) eine Narbung in die Dekorhaut (14) sichtseitig eingeformt wird. 2. The method according to claim 1, characterized in that a grain in the decorative skin ( 14 ) is formed on the visible side by a mold wall ( 28 ) of the mold ( 20 ). 3. Verfahren nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die Dekorhaut (14) durch Umformen aus einem in das Formwerkzeug (20) eingelegten Vorformling (34) gebildet wird. 3. The method according to claim 1 or 2, characterized in that the decorative skin ( 14 ) is formed by shaping from a preform ( 34 ) inserted into the mold ( 20 ). 4. Verfahren nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß die Dekorhaut (14) als warmformbares Halbzeug (34) in eine Formhälfte (24) des geöffneten Formwerkzeugs (20) eingelegt, durch Schließen des erwärmten Formwerkzeugs (20) in die Verbindungsschicht (12) des in der anderen Formhälfte (22) befindlichen Verbundformteils (16) eingepreßt und sodann endverfestigt wird. 4. The method according to any one of claims 1 to 3, characterized in that the decorative skin ( 14 ) as a thermoformable semi-finished product ( 34 ) in a mold half ( 24 ) of the opened mold ( 20 ) inserted by closing the heated mold ( 20 ) in the Connection layer ( 12 ) of the composite molded part ( 16 ) located in the other mold half ( 22 ) is pressed in and then finally solidified. 5. Verfahren nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die Dekorhaut (14) durch Urformen aus einem bei geschlossenem Formwerkzeug (20) an die Verbindungsschicht (12) angegossenen Gießmaterial erzeugt wird. 5. The method according to claim 1 or 2, characterized in that the decorative skin ( 14 ) by primary molding from a closed mold ( 20 ) to the connecting layer ( 12 ) cast material is produced. 6. Verfahren nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß das Verbundformteil (16) in das Formwerkzeug (20) eingelegt wird, und daß ein flüssiges Gießmaterial bei geschlossenem Formwerkzeug (20) in einen im Bereich der freien Oberfläche der Verbindungsschicht (12) freigehaltenen Formspalt (26) zur Bildung der Dekorhaut (14) eingespritzt wird. 6. The method according to claim 1 or 2, characterized in that the composite molding ( 16 ) is inserted into the mold ( 20 ), and that a liquid casting material with the mold ( 20 ) closed in a in the region of the free surface of the connecting layer ( 12 ) free molded gap ( 26 ) is injected to form the decorative skin ( 14 ). 7. Verfahren nach Anspruch 5 oder 6, dadurch gekennzeichnet, daß das Gießmaterial über einen durch das Verbundformteil (16) hindurchgeführten Angußkanal eingespritzt wird. 7. The method according to claim 5 or 6, characterized in that the casting material is injected via a runner through the composite molded part ( 16 ). 8. Verfahren nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, daß die Dekorhaut (14) aus einem mehrkomponentigen Reaktionskunststoff auf Polyurethanbasis gebildet wird. 8. The method according to any one of claims 1 to 7, characterized in that the decorative skin ( 14 ) is formed from a multi-component reaction plastic based on polyurethane. 9. Verfahren nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, daß das Verbundformteil (16) in einem einstufigen Prozess durch Hinterspritzen, Hinterpressen oder Preßformen der Verbindungsschicht (12) mit einer vorzugsweise thermoplastischen Formmasse vorgefertigt wird. 9. The method according to any one of claims 1 to 8, characterized in that the composite molding ( 16 ) is prefabricated in a one-step process by back injection, back pressing or compression molding of the connecting layer ( 12 ) with a preferably thermoplastic molding compound. 10. Verfahren nach einem der Ansprüche 1 bis 9, dadurch gekennzeichnet, daß das Trägerteil (10) aus Polypropylen geformt wird. 10. The method according to any one of claims 1 to 9, characterized in that the carrier part ( 10 ) is molded from polypropylene. 11. Verfahren nach einem der Ansprüche 1 bis 10, dadurch gekennzeichnet, daß die Verbindungsschicht als Vliesschicht ausgebildet ist. 11. The method according to any one of claims 1 to 10, characterized in that the tie layer is designed as a fleece layer. 12. Verfahren nach einem der Ansprüche 1 bis 11, dadurch gekennzeichnet, daß die Verbindungsschicht (12) aus einem textilen Faservlies, vorzugsweise einem Polyesterfaservlies besteht. 12. The method according to any one of claims 1 to 11, characterized in that the connecting layer ( 12 ) consists of a textile fiber fleece, preferably a polyester fiber fleece. 13. Verfahren nach einem der Ansprüche 1 bis 10, dadurch gekennzeichnet, daß die Verbindungsschicht (12) aus einem offenporigen Schaumstoff, vorzugsweise einem Polyurethanschaum besteht. 13. The method according to any one of claims 1 to 10, characterized in that the connecting layer ( 12 ) consists of an open-cell foam, preferably a polyurethane foam. 14. Innenteil für ein Fahrzeug mit einem ein flächiges formsteifes Trägerteil (10) und eine poröse Verbindungsschicht (12) aufweisenden vorgefertigten Verbundformteil (16) und einer auf die Verbindungsschicht (12) aufgebrachten Dekorhaut (14) aus Kunststoff, dadurch gekennzeichnet, daß die Dekorhaut (14) direkt an der Verbindungsschicht (12) des Verbundformteils (16) angeformt und daran klebstofffrei verankert ist. 14. A trim for a vehicle having a flat dimensionally stable carrier part (10) and a porous bonding layer (12) having pre-molded composite part (16) and a force applied to the connecting layer (12), the decorative skin (14) made of plastic, characterized in that the decorative skin ( 14 ) is formed directly on the connecting layer ( 12 ) of the composite molding ( 16 ) and anchored to it without adhesive.
DE10143883A 2001-09-07 2001-09-07 Multi-layer vehicle interior panel manufacture involves molding a skin onto a prefabricated carrier layer without adhesives Ceased DE10143883A1 (en)

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DE10320683A1 (en) * 2003-04-30 2004-11-18 Volkswagen Ag Back injecting a decorative material, comprises applying a barrier layer to the decorative material, and back injecting a plastic material
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US8119725B2 (en) 2005-05-17 2012-02-21 Exxonmobil Chemical Patents Inc. Fiber reinforced polypropylene composite interior trim cover panels
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Effective date: 20120411