WO2008064921A1 - Procédé de fabrication d'une peau pour l'habillage intérieur de l'habitacle d'un véhicule - Google Patents

Procédé de fabrication d'une peau pour l'habillage intérieur de l'habitacle d'un véhicule Download PDF

Info

Publication number
WO2008064921A1
WO2008064921A1 PCT/EP2007/010732 EP2007010732W WO2008064921A1 WO 2008064921 A1 WO2008064921 A1 WO 2008064921A1 EP 2007010732 W EP2007010732 W EP 2007010732W WO 2008064921 A1 WO2008064921 A1 WO 2008064921A1
Authority
WO
WIPO (PCT)
Prior art keywords
skin
thermoplastic
cavity
temperature
thermoplastic material
Prior art date
Application number
PCT/EP2007/010732
Other languages
German (de)
English (en)
Inventor
Rudolf Einsiedel
Original Assignee
Faurecia Innenraum Systeme 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 Faurecia Innenraum Systeme Gmbh filed Critical Faurecia Innenraum Systeme Gmbh
Publication of WO2008064921A1 publication Critical patent/WO2008064921A1/fr

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
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/16—Making multilayered or multicoloured articles
    • B29C45/1676—Making multilayered or multicoloured articles using a soft material and a rigid material, e.g. making articles with a sealing part
    • 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
    • B29C45/0001—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor characterised by the choice of 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
    • B29K2021/00—Use of unspecified rubbers 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
    • B29K2105/0094—Condition, form or state of moulded material or of the material to be shaped having particular viscosity
    • 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
    • B29K2221/00—Use of unspecified rubbers as reinforcement
    • B29K2221/003—Thermoplastic elastomers
    • 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

Definitions

  • the invention relates to a method for producing a skin, which in particular as the visible side
  • Top layer of interior trim parts of vehicles is used, a method for producing a molding having such a skin, and an interior trim.
  • Interior trim parts of vehicles which have a carrier which determines the mechanical properties and a cover layer which visually covers the carrier and thus determines the appearance of the lining part. It is customary to produce the carrier from a thermoplastic, in particular polypropylene. Thin-walled cast skins, for example of PUR, slush skins and foils, for example of PVC, are used as cover layer.
  • DE 699 05 745 T2 discloses a method for producing such a cladding part, in which in a first step a thermoset elastomeric skin is produced by a RIM (reaction injection molding) method, and then in a next step with a thermoplastic material for Forming a support is injected behind.
  • RIM reaction injection molding
  • DD 296 636 A5 discloses a method for producing a trim part, in which a carrier is over-injected with a thermoplastic material to form a face-side cover layer in a closed cavity.
  • the carrier is heated to a temperature of 120 - preheated 180 0 C and applied the visible side thermoplastic material on the thus-heated carrier.
  • the carrier must be preheated to a very high temperature, so that during the overmolding of the thermoplastic material of the thermoplastic material has a sufficiently low viscosity in order to be able to spread completely.
  • the object of the present invention is thus a method for producing a skin by a
  • Another object of the invention is to provide a method of manufacturing a molded article and an interior trim.
  • the invention provides a method for producing a skin for an interior trim part of a vehicle by injecting a thermoplastic into a cavity corresponding to the shape of the skin to be generated, wherein according to the invention the thermoplastic is a thermoplastic elastomer and when it enters the cavity flowability of at least 500mm with a gap width in the range of lmm to 1.3mm and a temperature in a temperature range of 190 0 C to 260 0 C.
  • thermoplastic elastomers are understood as meaning amorphous or partially crystalline hard segments (the domains) or ion clusters of thermally reversibly crosslinked macromolecules with low crosslinking density and blends of thermoplastics with fractions of crosslinked or undiluted elastomer phase.
  • TPEs combine the rubber-elastic properties of crosslinked elastomers with the advantage of thermoplastic processability.
  • two general groups are polymer blends consisting of a "hard” thermoplastic polymer matrix in which unblackened or crosslinked elastomer particles are incorporated as "soft fibers".
  • graft or copolymers which contain thermoplastic sequences A and elastomeric sequences B in their polymer molecule.
  • the two components A and B are incompatible with each other and mix locally so that the hard A sequences form the physical crosslinks in the continuous matrix of the soft B sequences.
  • thermoplastic elastomers have flowability according to the invention. While this fluidity may be common or possible with other prior art plastics (for example, polyacetals), these other plastics have completely inadequate properties for use as haptically pleasing skin.
  • the thermoplastic elastomers according to the invention on the other hand, on the one hand have a satisfactory processability and couple this advantage with a pleasant feel of the end product.
  • the thermoplastic material has a flowability of at least 500mm at a gap width in the range of lmm to 1.2mm and a temperature in a temperature range of 190 0 C to 260 0 C (the ratio of flowability to
  • Slit width can also be summarized as fluid keits: wall thickness ratio are called).
  • the thermoplastic material has a flowability of at least 500mm at a gap width in the range of 1.0mm to 1.3mm or 1.0mm to 1.2mm and a temperature in a temperature range of 200 0 C to 230 0 C.
  • thermoplastic elastomers from the groups TPV (thermoplastic vulcanizates), in particular a PP / EPDM (crosslinked) blend system, TPO, in particular a PP / EPDM (uncrosslinked) blend system, SEBS or TPU, are particularly suitable as thermoplastic plastics for the production of the skin , or mixtures of plastics of these groups.
  • thermoplastic material is injected into a cavity whose entire surface is formed by a metal surface of a tool.
  • An advantageous development of the invention provides that the surface of the cavity immediately before the injection of the plastic has a temperature of at most 80 0 C.
  • the surface of the cavity is heated to a temperature in the range of 20 0 C to 80 0 C immediately before the injection of the plastic.
  • the specific injection pressure of the thermoplastic material into the tool in this respect is preferably at least 150 bar, preferably at least 200 bar.
  • an advantageous development of the invention provides that the skin is produced with a layer thickness of a maximum of 1.5 mm, preferably a maximum of 1.2 mm.
  • the invention provides a method for producing a molded part, in particular an interior lining, wherein a skin according to one of claims 1 to 6 is back-injected in a further step with a further plastic, or embossed behind.
  • the skin can be used for this purpose in a second tool and injected back there, be embossed or pressed behind.
  • thermoplastics in particular PP, POM or ABS / PC, are suitable. Additives such as reinforcing fibers or minerals can be added to the plastic. These plastics can be used to create mechanically stable carriers on the back of the skin. Preferably, the plastics are matched to one another by the skin and the carrier, so that they form a firm, cohesive connection with one another during back injection.
  • the invention provides an interior trim part for a vehicle whose visible surface is at least partially formed by a skin according to one of claims 1 to 6 made of a thermoplastic material, wherein the plastic of the skin has a flowability of at least 500 mm with a gap width in the range from lmm to 1.3mm at a temperature in the temperature range of 190 to 260 0 C.
  • the back of the skin is arranged as described above carrier.
  • a foam layer can be arranged on the back of the skin, which can be produced, for example, by back-foaming the skin in a foaming tool.
  • a three layered structure with a skin as a cover layer, a foam layer as an intermediate layer and a carrier as a base is also possible.
  • an interior trim part for a vehicle interior here an instrument panel, is produced.
  • a skin is formed by injecting a thermoplastic in a closed cavity.
  • the cavity is formed according to the shape of the skin to be generated.
  • the cavity has a gap width of 1.0 mm, whereby the skin produced in this cavity has a corresponding layer thickness of 1.0 mm.
  • thermoplastic material As thermoplastic material, a TPV is used which has a melt flow rate of at least 500 mm with a gap width of lmm at a temperature of 210 0 C. This is injected at a temperature of 210 0 C, measured at the location of entry into the cavity, and a pressure of 500 bar in the cavity. At the injection temperature, the plastic has a flowability of 500 mm and a gap width of 1 mm. This creates internal cavity pressures in the range of 200 to 800 bar.
  • the cavity is formed by the surfaces of two metal tool halves of a two-part, temperature-controlled tool. Immediately before entering spraying of the plastic, the surface of the cavity was heated to a temperature of 50 0 C (alternatively, temperatures up to and including 80 0 C are possible). The temperature of the tool surface is maintained during the injection and after the termination of the injection process.
  • the tool is opened and the skin removed.
  • the skin is now placed in one half of a second, two-part tool.
  • the surface of the first mold half is formed according to the contour of the skin, so that it rests against the tool surface over a large area.
  • Tool surface is applied a negative pressure, which fixes the skin in its position on the tool surface.
  • the tool is closed.
  • another plastic here a PP with a glass fiber content
  • a mechanically stable carrier In this case, the second cavity is designed such that a support with a wall thickness of 2.5 mm is produced.
  • the second tool is opened and the molded part, here an instrument panel removed.
  • the surface of the tool half of the second tool, in which the skin is inserted be provided with a grain. This is during the back injection due to the pressure and the temperature imprinted into the skin. This makes it possible to produce optical effects on the surface of the skin.
  • a surface structure can also be generated during the manufacturing process of the skin by appropriate formation of the cavity used for this purpose.
  • the skin can be back-injection-molded or back-injected. Furthermore, backfoaming is also possible.
  • the skin produced can remain in a mold half of the first injection molding tool, with only the second mold half being replaced by another mold half to form the second cavity. This is followed by the second injection molding process as described above.
  • Such a method can be realized in particular by means of insert technology.
  • mold halves are used, two identical for the component surface, ie the surface of the skin, and two different for the impression of the back of the skin and the impression of the component back, so the back of the carrier.
  • four tool halves can be the

Landscapes

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

Abstract

L'invention concerne un procédé de fabrication d'une peau en matériau thermoplastique par un procédé de moulage par injection, un procédé de fabrication d'une pièce moulée ainsi qu'un habillage intérieur pour habitacle d'un véhicule. Selon l'invention, la peau prévue pour la pièce d'habillage intérieur d'un véhicule est formée par injection d'une matière synthétique thermoplastique dans une cavité dont la configuration correspond à la forme de la peau à former. La matière synthétique thermoplastique est un élastomère thermoplastique et, lorsqu'elle pénètre dans la cavité, elle présente une capacité d'écoulement d'au moins 500 mm dans un interstice dont la largeur est comprise entre 1 mm et 1,3 mm et une température comprise dans la plage de 190°C à 260°C.
PCT/EP2007/010732 2006-11-30 2007-11-30 Procédé de fabrication d'une peau pour l'habillage intérieur de l'habitacle d'un véhicule WO2008064921A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200610057126 DE102006057126A1 (de) 2006-11-30 2006-11-30 Verfahren zur Herstellung einer Haut für eine Innenverkleidung eines Fahrzeuginnenraums
DE102006057126.6 2006-11-30

Publications (1)

Publication Number Publication Date
WO2008064921A1 true WO2008064921A1 (fr) 2008-06-05

Family

ID=39124592

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2007/010732 WO2008064921A1 (fr) 2006-11-30 2007-11-30 Procédé de fabrication d'une peau pour l'habillage intérieur de l'habitacle d'un véhicule

Country Status (2)

Country Link
DE (1) DE102006057126A1 (fr)
WO (1) WO2008064921A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009036678A1 (de) 2009-08-07 2011-02-10 Daimler Ag Verfahren zur Bereitstellung eines vorbestimmten Fugenbilds einer Formhaut, Formhautwerkzeug und Kraftfahrzeug-Innenverkleidungsteil mit einem in eine Formhaut integrierten Dekorfolienabschnitt

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0856390A1 (fr) * 1997-01-22 1998-08-05 Chisso Corporation Procédé de fabrication d'un objet composite moulé de résine thermoplastique
FR2774623A1 (fr) * 1998-02-09 1999-08-13 Allibert Ind Procede pour realiser une feuille souple en matiere plastique de faible epaisseur, la feuille et une piece comprenant la feuille
US20050121818A1 (en) * 2003-12-09 2005-06-09 Cowelchuk Glenn A. Method of manufacturing an airbag assembly and vehicle trim component
US20050274452A1 (en) * 2004-06-11 2005-12-15 Schoemann Michael P Method of forming a vehicle component

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4023209C2 (de) * 1989-07-26 1998-10-08 Lignotock Gmbh Kaschiertes Formteil und Verfahren zu dessen Herstellung
KR920009637A (ko) * 1990-11-13 1992-06-25 다카다 쥬우이찌로오 에어백장치의 모듈커버의 성형방법
US6174488B1 (en) * 1992-10-26 2001-01-16 Kasai Kogyo Co., Ltd. Method for fabricating a laminated molded assembly
EP0995568A1 (fr) * 1998-10-21 2000-04-26 Recticel Procédé pour la fabrication d'un pièce multicouche en matière synthétique moulée et pièce ainsi obtenue
DE10242186B4 (de) * 2002-09-10 2013-05-29 Ticona Gmbh Formkörper umfassend Polyacetale, Verfahren zur Herstellung dieser Formkörper sowie deren Verwendung
DE102005021183A1 (de) * 2005-05-03 2006-11-16 Johnson Controls Interiors Gmbh & Co. Kg Dekorhaut und Fahrzeuginnenverkleidung mit einer Ausnehmung
DE102005039124B4 (de) * 2005-08-15 2009-11-26 Faurecia Innenraum Systeme Gmbh Verfahren zur Herstellung eines zweischichtigen Verbundteils

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0856390A1 (fr) * 1997-01-22 1998-08-05 Chisso Corporation Procédé de fabrication d'un objet composite moulé de résine thermoplastique
FR2774623A1 (fr) * 1998-02-09 1999-08-13 Allibert Ind Procede pour realiser une feuille souple en matiere plastique de faible epaisseur, la feuille et une piece comprenant la feuille
US20050121818A1 (en) * 2003-12-09 2005-06-09 Cowelchuk Glenn A. Method of manufacturing an airbag assembly and vehicle trim component
US20050274452A1 (en) * 2004-06-11 2005-12-15 Schoemann Michael P Method of forming a vehicle component

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
OUHADI T ET AL: "HIGH-FLOW THERMOPLASTIC VULCANIZATES", PLASTICS ENGINEERING, SOCIETY OF PLASTICS ENGINEERS,INC. GREENWICH, CONN, US, vol. 52, no. 8, 1 August 1996 (1996-08-01), pages 37 - 39, XP000636011, ISSN: 0091-9578 *

Also Published As

Publication number Publication date
DE102006057126A1 (de) 2008-06-05

Similar Documents

Publication Publication Date Title
EP0946347A1 (fr) Procede et dispositif de production d'un element en matiere plastique multicouche
EP2027982B1 (fr) Collage et revêtement de couches de matière première
DE102010063751A1 (de) Verfahren zur Herstellung von oberflächendbearbeiteten Leichtbauteilen mit hohem Naturfaseranteil und integrierten Befestigungselementen
DE102005039124B4 (de) Verfahren zur Herstellung eines zweischichtigen Verbundteils
EP3107706B1 (fr) Corps moulé multicouche pour équipement d'intérieur de véhicule et procédé pour la fabrication d'un tel corps
DE102010020039A1 (de) Verfahren zur Herstellung eines Verkleidungsteils aus Kunststoff sowie Verkleidungsteil aus Kunststoff
DE10019605A1 (de) Mehrschichtiger Verbundkörper von Leder und thermoplastischen Elastomeren
DE102006013857B4 (de) Verfahren zur Herstellung eines dekorierten Kunststoffformteils mit einer teilweisen Polsterung
DE102005062078B4 (de) Verfahren zur Herstellung von Kunststoffteilen mit einer Oberflächenstruktur, verfahrensgemäß hergestellte Kunststoffteile sowie Formwerkzeuge zu ihrer Herstellung
EP0773096A2 (fr) Procédé de fabrication d'un article moulé en matière plastique
WO2010051866A1 (fr) Procédé et dispositif de fabrication d'une pièce de forme avec surface décorée
DE102005028355A1 (de) Innenverkleidungsteil für Kraftfahrzeuge sowie Verfahren zur Herstellung eines Innenverkleidungsteils
DE102014011135A1 (de) Verfahren und Vorrichtung zur Herstellung eines Dekorteils
DE102007009384B4 (de) Verfahren zum Hinterspritzen einer Folie
WO2021074004A1 (fr) Procédé de production d'un élément composite doté d'une surface sans défaut
WO2003097323A1 (fr) Dispositif de fabrication d'un corps moule, profile, coude, decore au moyen d'une feuille estampee
EP1136219A1 (fr) Corps moulé à structure sandwich souple/souple, procédé pour sa fabrication et son utilisation
WO2008064921A1 (fr) Procédé de fabrication d'une peau pour l'habillage intérieur de l'habitacle d'un véhicule
DE102004033139B4 (de) Kunststoffverbundformteil sowie Verfahren zu dessen Herstellung
DE102008046840A1 (de) Verfahren zum Herstellen von mehrkomponentigen Kunststoffformenteilen, Spritzgusswerkzeug sowie nach diesem Verfahren hergestelltes Kunststoffformenteil
WO2012126907A1 (fr) Procédé de fabrication d'un élément composite
DE102014225944A1 (de) Formteil, Fahrzeuginnenverkleidungsteil sowie Vorrichtung und Verfahren zur Herstellung des Formteils bzw. des Fahrzeuginnenverkleidungsteils
DE19736063C2 (de) Chipkarte
EP0590748A2 (fr) Procédé de pressage pour fabriquer des objets moulés et revêtus
EP3023214B1 (fr) Outil de moulage par injection et procede de fabrication d'un composant d'outil de moulage par injection

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 07856507

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 07856507

Country of ref document: EP

Kind code of ref document: A1