DE29821409U1 - Interior trim part for motor vehicles - Google Patents
Interior trim part for motor vehiclesInfo
- Publication number
- DE29821409U1 DE29821409U1 DE29821409U DE29821409U DE29821409U1 DE 29821409 U1 DE29821409 U1 DE 29821409U1 DE 29821409 U DE29821409 U DE 29821409U DE 29821409 U DE29821409 U DE 29821409U DE 29821409 U1 DE29821409 U1 DE 29821409U1
- Authority
- DE
- Germany
- Prior art keywords
- adhesion
- interior trim
- trim part
- promoting layer
- part according
- 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
Links
- 239000000463 material Substances 0.000 claims description 13
- 239000004014 plasticizer Substances 0.000 claims description 13
- 238000009792 diffusion process Methods 0.000 claims description 12
- 239000006260 foam Substances 0.000 claims description 10
- 238000001465 metallisation Methods 0.000 claims description 5
- 229920002725 thermoplastic elastomer Polymers 0.000 claims description 5
- 238000005187 foaming Methods 0.000 claims description 4
- 238000000034 method Methods 0.000 claims description 4
- 239000000126 substance Substances 0.000 claims description 4
- 239000002131 composite material Substances 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- 239000004814 polyurethane Substances 0.000 claims description 3
- 239000004952 Polyamide Substances 0.000 claims description 2
- 239000006185 dispersion Substances 0.000 claims description 2
- 239000004922 lacquer Substances 0.000 claims description 2
- 238000002844 melting Methods 0.000 claims description 2
- 230000008018 melting Effects 0.000 claims description 2
- 229920002647 polyamide Polymers 0.000 claims description 2
- 229920000728 polyester Polymers 0.000 claims description 2
- 229920000642 polymer Polymers 0.000 claims description 2
- 229920002635 polyurethane Polymers 0.000 claims description 2
- 238000005245 sintering Methods 0.000 claims description 2
- 238000000465 moulding Methods 0.000 claims 1
- 229920000098 polyolefin Polymers 0.000 claims 1
- 150000003440 styrenes Chemical class 0.000 claims 1
- 239000010410 layer Substances 0.000 description 28
- 239000002318 adhesion promoter Substances 0.000 description 4
- 230000003313 weakening effect Effects 0.000 description 4
- 244000309464 bull Species 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 2
- 230000032683 aging Effects 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 2
- 238000003475 lamination Methods 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 239000002344 surface layer Substances 0.000 description 2
- 229920002522 Wood fibre Polymers 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000005253 cladding Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 239000011368 organic material Substances 0.000 description 1
- AHLBNYSZXLDEJQ-FWEHEUNISA-N orlistat Chemical compound CCCCCCCCCCC[C@H](OC(=O)[C@H](CC(C)C)NC=O)C[C@@H]1OC(=O)[C@H]1CCCCCC AHLBNYSZXLDEJQ-FWEHEUNISA-N 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 238000010422 painting Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000007669 thermal treatment Methods 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
- 239000002966 varnish Substances 0.000 description 1
- 239000002025 wood fiber Substances 0.000 description 1
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
- B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
- B29C44/02—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of definite length, i.e. discrete articles
- B29C44/04—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of definite length, i.e. discrete articles consisting of at least two parts of chemically or physically different materials, e.g. having different densities
- B29C44/06—Making multilayered articles
- B29C44/065—Making multilayered articles comprising at least one barrier 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
- B32B5/18—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
- 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
- B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
- B29C44/02—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of definite length, i.e. discrete articles
- B29C44/12—Incorporating or moulding on preformed parts, e.g. inserts or reinforcements
-
- 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
- B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
- B29C44/02—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of definite length, i.e. discrete articles
- B29C44/12—Incorporating or moulding on preformed parts, e.g. inserts or reinforcements
- B29C44/129—Enhancing adhesion to the preformed part using an interlayer
-
- 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
-
- 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
- B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
-
- 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
-
- 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
- B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
- B29C44/02—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of definite length, i.e. discrete articles
- B29C44/12—Incorporating or moulding on preformed parts, e.g. inserts or reinforcements
- B29C44/14—Incorporating or moulding on preformed parts, e.g. inserts or reinforcements the preformed part being a lining
-
- 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)
- Dry Shavers And Clippers (AREA)
Description
Dipl.-lng. J. Pfenning (-1994) Oipl.-Phys. K. H. Meinig (-1995) Dr.-lng. A. Butenschön, München Dipl.-lng. J. Bergmann* Berlin Dipl.-Phys. H. Nöth, München Dipl.-Chem. Dr. H. Reitzle, München Dipl.-lng. U. Grambow, Dresden Dipl.-Phys. HJ. Kraus, MünchenDipl.-lng. J. Pfenning (-1994) Oipl.-Phys. K. H. Meinig (-1995) Dr.-lng. A. Butenschön, Munich Dipl.-lng. J. Bergmann* Berlin Dipl.-Phys. H. Nöth, Munich Dipl.-Chem. Dr. H. Reitzle, Munich Dipl.-lng. U. Grambow, Dresden Dipl.-Phys. HJ. Kraus, Munich
■auch Rechtsanwalt■also lawyer
80336 München, Mozartstraße Telefon: 089/530 93 36-38 Telefax: 089/53 22 29 e-mail: muc@pmp-patent.de80336 Munich, Mozartstrasse Telephone: 089/530 93 36-38 Fax: 089/53 22 29 e-mail: muc@pmp-patent.de
10707 Berlin, Kurfürstendamm Telefon: 030/88 44 810 Telefax: 030/88136 89 e-mail: bln@pmp-patent.de10707 Berlin, Kurfürstendamm Telephone: 030/88 44 810 Fax: 030/88136 89 e-mail: bln@pmp-patent.de
01217 Dresden, Gostritzer Str. 61-63 Telefon: 03 51/8718160 Telefax: 03 51/871816201217 Dresden, Gostritzer Str. 61-63 Telephone: 03 51/8718160 Fax: 03 51/8718162
Berlin,Berlin,
25. November 1998 Be/St-US-SOMMER ALLI25 November 1998 Be/St-US-SUMMER ALLI
SOMMER ALLIBERT-LIGNOTOCK GMBH
Daimlerstrasse 1, 76732 Worth am RheinSOMMER ALLIBERT-LIGNOTOCK GMBH
Daimlerstrasse 1, 76732 Worth am Rhein
Innenverkleidungsteil für KraftfahrzeugeInterior trim part for motor vehicles
SOMMER ALLIBERT-LIGNOTOCK GMBHSOMMER ALLIBERT-LIGNOTOCK GMBH
Die Erfindung betrifft ein Innenverkleidungsteil gemäß dem Oberbegriff des Anspruches 1. 5The invention relates to an interior trim part according to the preamble of claim 1. 5
Es ist bekannt, Innenverkleidungsteile für Kraftfahrzeuge dadurch herzustellen, daß formstabile Trägerteile und vorgeformte Oberflächenschichten in gesonderten Schäumwerkzeugen durch eine sich ausbildende Schaumschicht (Hinterschäumung) miteinander verbunden werden. Vor allem Instrumenttafelverkleidungen und Fahrgastsitze werden zur Zeit auf diese Weise gefertigt. Die formstabilen Trägerteile können dabei aus an sich beliebigen Werkstoffen bestehen (Holzfaserwerkstoff, Blech), bevorzugt werden aber Trägerteile aus spritzgegossenen oder gepreßten Thermoplasten verwendet. Die vorgeformten Oberflächenschichten sind bevorzugt sogenannte "Slush-Häute", das heißt durch Sintern oder Schlickern in 0 gesonderten Werkzeugen hergestellte Formhäute, über-It is known to produce interior trim parts for motor vehicles by connecting dimensionally stable support parts and preformed surface layers in separate foaming tools by a foam layer (back foaming). Instrument panel trims and passenger seats in particular are currently manufactured in this way. The dimensionally stable support parts can be made of any material (wood fiber material, sheet metal), but support parts made of injection-molded or pressed thermoplastics are preferably used. The preformed surface layers are preferably so-called "slush skins", i.e. molded skins produced by sintering or slip in 0 separate tools, over-
wiegend aus PVC-Werkstoffen (siehe beispielsweise DE 39 32 923 Al). Wenn auch die beschriebene Vorgehensweise zum erfolgreich praktizierten Stand der Technik gehört, so gelten vor allem zwei Probleme als noch nicht vollständig gelöst:predominantly made of PVC materials (see for example DE 39 32 923 Al). Although the procedure described is part of the successfully practiced state of the art, two problems in particular are not yet fully resolved:
♦ Die zur Zeit mangelhafte Haftfähigkeit zwischen Hinterschäumung und der Slush-Haut, und♦ The currently poor adhesion between back foam and the slush skin, and
*** die Diffusion von Weichmachern aus Slush-Haut in die Hinterschäumung. *** the diffusion of plasticizers from slush skin into the backfoam.
Um die Haftung zwischen der Hinterschäumung und der Slush-Haut zu verbessern, ist es üblich, dem Schaum einen Haftvermittler beizumischen. Jedoch führt die Abwanderung von Weichmachern in den Schaum zu einer Abnahme der Flexibilität der Slush-Haut im Laufe der Lebensdauer des Innenverkleidungsteiles (Langzeitalterung) und ggf. auch zu einer Beeinträchtigung der Schaumqualität. Man versucht, den Weichmacherverlust der Slush-Haut durch eine Vergrößerung der Wanddicke zu kompensieren, d.h. also insgesamt einen größeren "Vorrat" an Weichmachern bereitzustellen, mit dem Nachteil, daß neben größeren Herstellungskosten der Slush-Haut auch zusätzliches Gewicht erhalten wird, das vermeidbar wäre. Verschärft wird die Problematik der Weichmacherdiffusion noch durch den folgenden Umstand. Zunehmend besitzen Innenverkleidungsteile von Fahrzeugen Bereiche, hinter denen Airbags ange-0 ordnet sind, die jedoch häufig nicht erkennbar sein sollen. Um ein definiertes Aufreißen der Kaschierung, vorzugsweise einer Slush-Haut im Falle einer Auslösung des Airbags, sicherzustellen, ist es üblich, den Umriß des Öffnungsbereiches des Airbags in der Kaschierung mechanisch zu schwächen, z.B. durch Einritzen oder Laserperforieren (ältere Anmeldung DE 198In order to improve the adhesion between the back foam and the slush skin, it is usual to add an adhesion promoter to the foam. However, the migration of plasticizers into the foam leads to a decrease in the flexibility of the slush skin over the life of the interior trim part (long-term aging) and possibly also to a deterioration in the quality of the foam. Attempts are made to compensate for the loss of plasticizer in the slush skin by increasing the wall thickness, i.e. by providing a larger "supply" of plasticizers overall, with the disadvantage that in addition to higher manufacturing costs for the slush skin, additional weight is also gained, which could have been avoided. The problem of plasticizer diffusion is exacerbated by the following circumstance. Increasingly, interior trim parts of vehicles have areas behind which airbags are arranged, but these are often not intended to be visible. In order to ensure a defined tearing of the lamination, preferably a slush skin, in the event of an airbag deployment, it is usual to mechanically weaken the outline of the opening area of the airbag in the lamination, e.g. by scoring or laser perforating (older application DE 198
• · ·4· ·4
815). Derartig exponierte Bereiche sind jedoch bevorzugte Orte für die Weichmacherdiffusion, was beispielsweise
zu unerwünschten Markierungen auf der Sichtseite der Innenverkleidungsteile führen kann.
Der Erfindung liegt daher die Aufgabe zugrunde, die Langzeitalterung von Innenverkleidungsteilen der
beschriebenen Art zu verbessern sowie das Gewicht dieser Teile und deren Herstellungskosten zu reduzieren.
10815). However, such exposed areas are preferred locations for plasticizer diffusion, which can lead, for example, to undesirable markings on the visible side of the interior trim parts. The invention is therefore based on the object of improving the long-term aging of interior trim parts of the type described and of reducing the weight of these parts and their manufacturing costs.
10
Die Erfindungsaufgabe wird durch den kennzeichnenden Teil des Anspruches 1 gelöst, mit vorteilhaften Weiterbildungen durch die Ansprüche 2 bis 13.The object of the invention is solved by the characterizing part of claim 1, with advantageous further developments by claims 2 to 13.
Dadurch, daß zwischen der Oberflächenhaut und der Hinterschäumung eine Haftvermittlungsschicht angeordnet wird, die eine Diffusion niedermolekularer organischer Substanzen (der Weichmacher also) zumindest behindert, werden sowohl die Anwendung von Haftver-0 mittler im Schaum als auch eine Vergrößerung der Dicke der Oberflächenhaut überflüssig, was wiederum eine Kostenreduzierung bei der Herstellung und eine Gewichtsreduzierung beim Fertigteil zur Folge hat. Als Oberflächenhaut wird vorzugsweise eine Slush-Haut verwendet. Vor allem die Diffusion der Weichmacher läßt sich positiv beeinflussen, wenn die multifunktionale Haftvermittlungsschicht aus Polymeren besteht, die ein kleines molekulares Dipolmoment besitzen. Derartige Substanzen zeigen nur geringe 0 Lösungseigenschaften für Weichmacher und sind daher als Diffusionssperren für diese besonders geeignet. Ist die Schmelzpunkt-Temperatur der multifunktionalen Haftvermittlungsschicht niedriger als diejenige der Slush-Haut, so ergibt sich die vorteilhafte Möglich-5 keit, die Haftvermittlungsschicht direkt nach der Herstellung der Slush-Haut mit Haftvermittlungs-By placing an adhesion promoter layer between the surface skin and the backing foam, which at least prevents the diffusion of low molecular weight organic substances (i.e. the plasticizer), both the use of adhesion promoters in the foam and an increase in the thickness of the surface skin become unnecessary, which in turn results in a reduction in production costs and a reduction in the weight of the finished part. A slush skin is preferably used as the surface skin. The diffusion of the plasticizers in particular can be positively influenced if the multifunctional adhesion promoter layer consists of polymers that have a small molecular dipole moment. Such substances only show low dissolving properties for plasticizers and are therefore particularly suitable as diffusion barriers for them. If the melting point temperature of the multifunctional adhesion-promoting layer is lower than that of the slush skin, this offers the advantageous possibility of coating the adhesion-promoting layer with adhesion-promoting agent directly after the slush skin has been produced.
schicht vorzufertigen, im Bereich eines unsichtbaren Airbags vorzuschwächen und die Haftvermittlungsschicht durch nachträgliche thermische Behandlung über den geschwächten Bereichen der Slush-Haut wieder diffusionsdicht zu schließen, ohne diese Schwächung in der Slush-Haut selbst rückgängig zu machen. Diese besonders diffusionsanfälligen Bereich können so sicher abgedichtet werden. Da die Dicke der Haftvermittlungsschicht vernachlässigbar gering gegenüber der Dicke der Slush-Haut ist, wird die gewünschte Schwächung der Slush-Haut nicht beeinträchtigt.layer, pre-weaken it in the area of an invisible airbag and then seal the bonding layer again by subsequent thermal treatment over the weakened areas of the slush skin to make it diffusion-tight, without reversing this weakening in the slush skin itself. These areas that are particularly susceptible to diffusion can thus be safely sealed. Since the thickness of the bonding layer is negligible compared to the thickness of the slush skin, the desired weakening of the slush skin is not affected.
Als Werkstoff für die multifunktionale Haftvermittlungsschicht kommen Polyurethan-Werkstoffe infrage, die vor allem wegen ihrer chemischen Verwandtschaft zum Schaum besonders geeignet sind; aber auch Haftvermittlungsschichten aus thermoplastischen Elastomeren (TPE) auf der Basis von Styrenen und/oder Polyamiden und/oder Polyestern sind gut für den beabsich-0 tigten Einsatz geeignet, wobei auch Mischungen aus mehreren Komponenten zweckmäßig sein können. Alternativ ist es natürlich auch möglich, die Haftvermittlungsschicht aus einem Verbund von mindestens zwei Schichten auszubilden, die unterschiedliche Beschaffenheit aufweisen, um auf diese Weise den unterschiedlichen Anforderungen bezüglich Haftvermittlung und Diffusionssperrung optimal gerecht zu werden.Polyurethane materials can be used as the material for the multifunctional adhesion-promoting layer, which are particularly suitable due to their chemical relationship to foam; but adhesion-promoting layers made of thermoplastic elastomers (TPE) based on styrene and/or polyamides and/or polyesters are also well suited for the intended use, whereby mixtures of several components can also be useful. Alternatively, it is of course also possible to form the adhesion-promoting layer from a composite of at least two layers that have different properties in order to optimally meet the different requirements in terms of adhesion and diffusion barrier.
Eine Metallisierung als Haftvermittlungsschicht hat sowohl hinsichtlich einer Haftvermittlung als auch vor allem hinsichtlich der Unterdrückung einer Weichmacherdiffusion gute Eigenschaften. Die Metallisierung kann dabei mit den zum Stand der Technik gehörenden Aufbringungsverfahren ganzflächig oder in Teilbereichen durchgeführt werden, wobei eine Teilbereichaufbringung bevorzugt für die Abdeckung un-Metallization as an adhesion-promoting layer has good properties both in terms of adhesion and, above all, in terms of suppressing plasticizer diffusion. Metallization can be carried out using state-of-the-art application methods over the entire surface or in partial areas, with partial application being preferred for covering un-
sichtbarer Airbags vorgesehen werden kann. Es ist naturgemäß auch möglich, ganz- oder teilflächige Metallisierungen mit anderen der aufgeführten Werkstoffe in einem Schichtverbund zu kombinieren. 5visible airbags can be provided. It is naturally also possible to combine full or partial metallization with other of the listed materials in a layered composite. 5
Besteht die Haftvermittlungsschicht aus mindestens einem der aufgeführten organischen Werkstoffe, so kann es zweckmäßig sein, sie als Sinterschicht auszubilden, die dann in dem gleichen Werkzeug auf die Slush-Haut aufgebracht werden kann, in dem diese gefertigt wurde, ggf. auch in der gleichen wärme. Es ist aber ebenso gut möglich, die Haftvermittlungsschicht als Lösung und/oder Dispersion mit üblichen Verfahren, wie Spritzen oder Streichen, als Lackschicht auf die Rückseite der Slush-Haut aufzubringen. Damit wird es in einfacher Weise möglich, nur Teilbereich der Slush-Haut mit der Haftvermittlungsschicht zu überdecken, beispielsweise nur den Bereich der Durchtrittsöffnung eines unsichtbaren Airbags mit 0 der entsprechenden VorSchwächung, wo ohne die Haftvermittlungsschicht die erhöhte Gefahr der Weichmacherdiffusion besteht.If the adhesion-promoting layer consists of at least one of the organic materials listed, it may be expedient to form it as a sintered layer, which can then be applied to the slush skin in the same tool in which it was manufactured, possibly also at the same temperature. However, it is equally possible to apply the adhesion-promoting layer as a solution and/or dispersion using conventional methods such as spraying or painting, as a layer of paint to the back of the slush skin. This makes it easy to cover only part of the slush skin with the adhesion-promoting layer, for example only the area of the passage opening of an invisible airbag with the corresponding pre-weakening, where without the adhesion-promoting layer there is an increased risk of plasticizer diffusion.
Wird die Haftvermittlungsschicht wie beschrieben als Lackschicht in einem gesonderten Arbeitsgang aufgebracht, so kann dieses vorteilhafterweise dann geschehen, wenn die Slush-Haut bereits in das Schäumwerkzeug eingebracht ist. Dieses hat den Vorteil, daß eine Beschädigung der Haftvermittlungsschicht bei-0 spielsweise durch Transport, Lagerung oder Positionierung im Werkzeug ausgeschlossen wird, so daß die Haftvermittlungsschicht ggf. dünner ausgebildet sein kann.If the adhesion-promoting layer is applied as a lacquer layer in a separate operation as described, this can advantageously be done when the slush skin has already been introduced into the foaming tool. This has the advantage that damage to the adhesion-promoting layer, for example through transport, storage or positioning in the tool, is excluded, so that the adhesion-promoting layer can be made thinner if necessary.
Je nach Material der Haftvermittlungsschicht kann es dabei zweckmäßig sein, den unmittelbaren Bereich derDepending on the material of the adhesion-promoting layer, it may be appropriate to protect the immediate area of the
mechanischen Schwächung der Slush-Haut mit einer mechanisch nicht belastbaren Abdeckung zu versehen, um ein Verkleben der Schwachstelle durch eindringendes Material der Haftvermittlungsschicht zu vermeiden. mechanical weakening of the slush skin with a mechanically non-load-bearing cover, in order to prevent the weak point from sticking together due to penetrating material from the adhesion-promoting layer.
Die Erfindung wird nunmehr anhand der Figur näher erläutert, die einen schematischen Schnitt durch ein erfindungsgemäßes Innenverkleidungsteil zeigt, und zwar an einer Stelle, an der eine Reißnaht für den Öffnungsbereich eines unsichtbaren Airbags durch Schwachstellen im Trägerteil und in der Slush-Haut vorgegeben ist. Mit 1 ist ein Trägerteil bezeichnet, das eine Sollbruchstelle 6 besitzt. Eine Hinterschäumung 2 verbindet eine die Sichtseite des Verkleidungsteiles V bildende Slush-Haut 4 mit dem Trägerteil 1, wobei eine multifunktionale Haftvermittlungsschicht 3 (in der Figur der Deutlichkeit halber im Vergleich zu den anderen Schichten dicker dargestellt als in der Wirklichkeit) sowohl für gute Haftung zwischen Hinterschäumung 2 und Slush-Haut 4 sorgt als auch eine Diffusion von Weichmacheranteilen aus der Slush-Haut 4 in die Hinterschäumung 2 unterbindet. Eine Schwachstelle 5, die in Form eines ein-5 kerbenden Schnittes in die Slush-Haut 4 eingebracht ist, ist durch eine Überdeckung 5' gegen ein Verkleben durch die multifunktionale Haftvermittlungsschicht 3 geschützt. Diese Überdeckung 51 kann unterschiedlich ausgebildet sein: am einfachsten ist die 0 Ausführung als Schutzlack, der zumindest die Schwachstelle 5 ausfüllt und der dabei nur eine geringe Eigenfestigkeit hat, so daß die Funktion der Schwachstelle 5 nicht beeinträchtigt wird.The invention will now be explained in more detail with reference to the figure, which shows a schematic section through an interior trim part according to the invention, at a point at which a tear seam for the opening area of an invisible airbag is predetermined by weak points in the carrier part and in the slush skin. 1 designates a carrier part which has a predetermined breaking point 6. A backfoam 2 connects a slush skin 4 forming the visible side of the trim part V to the carrier part 1, with a multifunctional adhesion-promoting layer 3 (shown thicker in the figure than in reality in comparison to the other layers for the sake of clarity) ensuring good adhesion between the backfoam 2 and the slush skin 4 and preventing diffusion of plasticizer components from the slush skin 4 into the backfoam 2. A weak point 5, which is introduced into the slush skin 4 in the form of a notched cut, is protected by a covering 5' against sticking by the multifunctional adhesion-promoting layer 3. This covering 5 ' can be designed in different ways: the simplest is the design as a protective varnish, which at least fills the weak point 5 and which has only a low inherent strength, so that the function of the weak point 5 is not impaired.
Claims (13)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE29821409U DE29821409U1 (en) | 1998-11-25 | 1998-11-25 | Interior trim part for motor vehicles |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE29821409U DE29821409U1 (en) | 1998-11-25 | 1998-11-25 | Interior trim part for motor vehicles |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE29821409U1 true DE29821409U1 (en) | 1999-03-18 |
Family
ID=8066040
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE29821409U Expired - Lifetime DE29821409U1 (en) | 1998-11-25 | 1998-11-25 | Interior trim part for motor vehicles |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE29821409U1 (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19926417A1 (en) * | 1999-06-10 | 2000-12-14 | Bayerische Motoren Werke Ag | Sandwich structure has top and bottom covering layers, intermediate core and matrix |
| WO2001023221A1 (en) | 1999-09-30 | 2001-04-05 | Sai Automotive Sal Gmbh | Decorative film with integrated break line |
| DE102005012720A1 (en) * | 2005-03-19 | 2006-09-21 | Volkswagen Ag | Preparation of a multi-layered lining element, useful for e.g. the manufacture of an instrument panel for a motor vehicle, comprises producing a visible slush layer from thermoplastic elastomers; and melting the visible slush layer |
| EP1577166A3 (en) * | 2004-02-18 | 2006-12-06 | Grammer Ag | Skin type lining, in particular for automotive trim parts, and process for manufacturing a skin type lining. |
| FR2887802A1 (en) * | 2005-06-29 | 2007-01-05 | Faurecia Interieur Ind Snc | USE OF A PRINTING INK FOR THE PRODUCTION OF PRE-CUT SKIN PARTS |
| FR2894209A1 (en) * | 2005-12-06 | 2007-06-08 | Faurecia Interieur Ind Snc | CLADDING PIECE, DETAIL FORMING APPARATUS, AND METHOD FOR MANUFACTURING CLADDING PIECE |
| DE10066094B4 (en) * | 2000-02-10 | 2007-09-06 | Möller Plast GmbH | Component for the interior lining of motor vehicles with a soft surface structure |
-
1998
- 1998-11-25 DE DE29821409U patent/DE29821409U1/en not_active Expired - Lifetime
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19926417A1 (en) * | 1999-06-10 | 2000-12-14 | Bayerische Motoren Werke Ag | Sandwich structure has top and bottom covering layers, intermediate core and matrix |
| US7208213B1 (en) | 1999-09-30 | 2007-04-24 | Sai Automotive Sal Gmbh | Decorative film with integrated break line |
| WO2001023221A1 (en) | 1999-09-30 | 2001-04-05 | Sai Automotive Sal Gmbh | Decorative film with integrated break line |
| DE10066094B4 (en) * | 2000-02-10 | 2007-09-06 | Möller Plast GmbH | Component for the interior lining of motor vehicles with a soft surface structure |
| EP1577166A3 (en) * | 2004-02-18 | 2006-12-06 | Grammer Ag | Skin type lining, in particular for automotive trim parts, and process for manufacturing a skin type lining. |
| DE102005012720A1 (en) * | 2005-03-19 | 2006-09-21 | Volkswagen Ag | Preparation of a multi-layered lining element, useful for e.g. the manufacture of an instrument panel for a motor vehicle, comprises producing a visible slush layer from thermoplastic elastomers; and melting the visible slush layer |
| FR2887802A1 (en) * | 2005-06-29 | 2007-01-05 | Faurecia Interieur Ind Snc | USE OF A PRINTING INK FOR THE PRODUCTION OF PRE-CUT SKIN PARTS |
| WO2007003728A1 (en) * | 2005-06-29 | 2007-01-11 | Faurecia Interieur Industrie | Use of a printing ink for the production of parts having a precut skin |
| US8371223B2 (en) | 2005-06-29 | 2013-02-12 | Faurecia Interieur Industrie | Use of printing ink for production of parts having a precut skin |
| FR2894209A1 (en) * | 2005-12-06 | 2007-06-08 | Faurecia Interieur Ind Snc | CLADDING PIECE, DETAIL FORMING APPARATUS, AND METHOD FOR MANUFACTURING CLADDING PIECE |
| WO2007065990A1 (en) * | 2005-12-06 | 2007-06-14 | Faurecia Interieur Industrie | Trim element |
| US8337981B2 (en) | 2005-12-06 | 2012-12-25 | Faurecia Interieur Industrie | Trim element |
| US8852735B2 (en) | 2005-12-06 | 2014-10-07 | Faurecia Interieur Industrie | Trim element |
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