WO1999055520A1 - Procede pour produire un element d'amenagement interieur de vehicule, et element d'amenagement interieur ainsi obtenu - Google Patents

Procede pour produire un element d'amenagement interieur de vehicule, et element d'amenagement interieur ainsi obtenu Download PDF

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Publication number
WO1999055520A1
WO1999055520A1 PCT/EP1999/001142 EP9901142W WO9955520A1 WO 1999055520 A1 WO1999055520 A1 WO 1999055520A1 EP 9901142 W EP9901142 W EP 9901142W WO 9955520 A1 WO9955520 A1 WO 9955520A1
Authority
WO
WIPO (PCT)
Prior art keywords
plastic material
molded
wood
fiber
pressing tool
Prior art date
Application number
PCT/EP1999/001142
Other languages
German (de)
English (en)
Inventor
Matthias Berg
Thomas Hempel
Original Assignee
Erwin Behr Gmbh & Co. Kg
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 Erwin Behr Gmbh & Co. Kg filed Critical Erwin Behr Gmbh & Co. Kg
Priority to EP99910255A priority Critical patent/EP1075380A1/fr
Priority to HU0101325A priority patent/HUP0101325A3/hu
Publication of WO1999055520A1 publication Critical patent/WO1999055520A1/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
    • B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
    • B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
    • B29C70/06—Fibrous reinforcements only
    • B29C70/08—Fibrous reinforcements only comprising combinations of different forms of fibrous reinforcements incorporated in matrix material, forming one or more layers, and with or without non-reinforced layers
    • B29C70/088—Fibrous reinforcements only comprising combinations of different forms of fibrous reinforcements incorporated in matrix material, forming one or more layers, and with or without non-reinforced layers and with one or more layers of non-plastics material or non-specified material, e.g. supports
    • 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
    • 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
    • B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
    • B29C70/68—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts by incorporating or moulding on preformed parts, e.g. inserts or layers, e.g. foam blocks
    • B29C70/78—Moulding material on one side only of the preformed part
    • 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
    • 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
    • B29K2105/0854—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 in the form of a non-woven mat
    • 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
    • B29K2711/00—Use of natural products or their composites, not provided for in groups B29K2601/00 - B29K2709/00, for preformed parts, e.g. for inserts
    • B29K2711/14—Wood, e.g. woodboard or fibreboard

Definitions

  • the present invention relates to a method for producing an interior fitting for vehicles, in which a molded wooden part having a visible side and a rear side is provided with a reinforcing layer on its rear side.
  • Wood veneer parts are usually used as molded wood parts, with a cover veneer and several blind veneers usually being glued together.
  • An aluminum carrier film is usually arranged between the veneer layers in order to give the wood veneer part a certain stability and in particular to ensure that it does not splinter and does not form any sharp edges under mechanical stress, for example in an impact test.
  • Such molded wooden parts usually already have their final shape in the unloaded state, but they are not independently dimensionally stable. Rather, in order to achieve dimensional stability, it is necessary to provide the wooden molded parts with a reinforcing layer on their back. Reinforced molded wood parts are then usually painted on their visible side. - 2 -
  • the molded wood part is usually back-injected, as is known, for example, from the publication by S. Anders et al .: "Injection molding of decorative materials by low-pressure injection molding", Kunststoffe 80 (1990), page 997 ff .
  • the object of the present invention is to provide a generic method which enables a particularly inexpensive manufacture of an interior fitting. - 3 -
  • This object is achieved according to the invention in a method of the type described at the outset by inserting the molded wooden part into a pressing tool, the pressing tool having a bearing surface which essentially corresponds to the visible surface contour of the molded wooden part and the visible side of the wooden molded part is brought into contact with the supporting surface, and that one heats a fiber-reinforced plastic material to a processing temperature at which it is plastically deformable, and places it on the back of the molded wood part and connects it positively to the molded wood part under pressure.
  • the reinforcement layer is quasi pressed onto the molded wooden part, while moving away from the previously customary injection molding process.
  • a fiber-reinforced plastic material is used, which is heated to a processing temperature in order to achieve plastic deformability.
  • the plastically deformable plastic material is positively connected to the molded wood part by means of the pressing tool.
  • a pressure load is exerted on the plastically deformable, fiber-reinforced plastic material in the press tool.
  • the plastic material cools below its processing temperature and forms a rigid reinforcement layer, which gives the molded wood part good dimensional stability.
  • a wood veneer part is preferably used as the molded wood part, which in its unloaded state has its final shape, but is not independently dimensionally stable.
  • the exposed wooden part is placed flat on the contact surface of the pressing tool.
  • the molded wood part is reliably supported during the pressure load exerted by the pressing tool, so that damage is avoided.
  • the fiber-reinforced plastic material can be heated within the pressing tool if the plastic material already lies on the wood molding.
  • the heating is carried out simultaneously with the increase in pressure within the pressing tool. This has the advantage that a reinforcing layer can be applied to the molded wooden part within a very short time.
  • a wood veneer part having several veneer layers is used as the molded wood part, the individual veneer layers being glued to one another.
  • a preferred embodiment of the method according to the invention provides that the plastic material is first heated to its processing temperature and then placed on the back of the molded wood part. In this way it can be avoided that the wood molding is exposed to an undesirable heat load during the heating of the fiber-reinforced plastic material.
  • a particularly low thermal load on the molded wood part can be achieved by cooling the pressing tool during the pressure load. On the one hand, this has the consequence that the molded wood part is not heated to an unacceptable degree. On the other hand, cooling the molded wooden part can cause the heated plastic material to cool and solidify within a short time after the pressure load. The molded wooden part can thus be provided with a reinforcement layer within a very short time.
  • Glass fibers are suitable for reinforcing the plastic material.
  • mat or mesh-like natural fibers in particular sisal or flax fibers, have proven to be particularly advantageous.
  • sisal fibers can be mixed with fibers made of thermoplastic and processed into a mat or a nonwoven so that the fiber-reinforced plastic material is in the form of a nonwoven with natural and synthetic fibers, in particular thermoplastic fibers. If such a thermoplastic reinforced with natural fibers is heated, it can be adapted to the prefabricated shape of the back of the molded wood part and can be pressed and compressed in a simple manner on it.
  • thermosetting material instead of using a thermoplastic, it is provided that a material that changes into a thermosetting state after heating and pressure loading is used as the plastic material.
  • the chain molecules of the plastic are closely networked with the heating and pressure load.
  • fiber-reinforced thermosetting reinforcement layers for molded wood parts is particularly advantageous if these are intended for the interior cladding of motor vehicles, because they are distinguished in the event of a fire in that they do not melt and generally have a higher fire resistance.
  • Interior fittings with a molded wooden part and a reinforcing layer can be produced particularly cost-effectively if the pressing tool is equipped with a cutting element and the wooden molded part and / or the fiber-reinforced plastic material is cut to a predetermined contour during the pressure load.
  • Such a manufacturing process is particularly economical.
  • Functional elements are preferably introduced into the fiber-reinforced plastic material, in particular fastening elements for fastening the interior fitting part in a motor vehicle. - 7 -
  • the described invention naturally extends not only to the method explained above, but also to interior fittings, in particular wood veneer parts reinforced on the back, which are produced using this method.
  • Fig. 1 A schematic sectional view through a
  • FIG. 1 schematically shows a pressing tool 10 with a lower part 12 and an upper part which can be pressed onto it in the form of a press ram 14.
  • the lower part 12 has on its upper side 16 facing the press ram 14 a preformed wooden molded part in the form of a wood veneer part 18 on.
  • This forms a support surface 22, which corresponds to the visible surface contour of the wood veneer part 18, so that the wood veneer part 18 can lie flat on the support surface 22 of the lower part 12.
  • the lower part 12 can be lowered in the direction of the press ram 14 and raised in the opposite direction. This is symbolized by the double part 24.
  • the press ram 14 On its underside 26 facing the lower part 12, the press ram 14 carries a cutting edge 28 corresponding to the outer contour of the wood veneer part 18.
  • a plastic mat 32 is placed in the form of a fleece made of a mixture of plastic and sisal fibers on the back 30 of the wood veneer part 18 facing the press die 14.
  • the plastic mat 32 has previously been heated to a temperature above a processing temperature at which the plastic mat is plastically deformable.
  • the course of the plastic mat 32 therefore corresponds to the shape of the wood veneer part 18.
  • the plastic mat 32 completely covers the rear side 30 of the wood veneer part 18 and projects beyond the outer contour of the wood veneer part 18.
  • the wood veneer part 18 is first inserted into the depression 20 of the lower part 12 with the press ram 14 lifted off the lower part 12.
  • the plastic mat 32 is then heated with embedded sisal fibers and placed in the plastically deformable state on the back 30 of the wood veneer part 18. Due to its plastic deformability, the fiber-reinforced plastic mat 32 lies flat against the rear 30 of the wood veneer part 18.
  • the size of the plastic mat was chosen so - 9 -
  • the press ram 14 is lowered onto the lower part 12 and, due to the pressure load thereby exerted, the plastic mat 32 is compressed and positively connected to the wood veneer part 18.
  • a cooling water line 35 or 37 is provided, so that the wood veneer part 18 and the fiber-reinforced plastic mat 32 are cooled during the pressing process. This cooling has the consequence that the plastic mat 32 solidifies after a short time and by means of the cutting edge 28 protruding from the underside 26 of the press ram 14, the plastic mat 32 is simultaneously cut to the outer contour of the wood veneer part 18.
  • the ram 14 is now raised again from the lower part 12 so that the wood veneer part 18 provided with a reinforcement layer made of fiber-reinforced plastic can be removed from the depression 20 of the lower part 12.
  • FIG. 2 shows the interior fitting part produced using the method explained above in the form of the wood veneer part 18 with a reinforcement layer made of fiber-reinforced plastic arranged on the rear.
  • the fiber-reinforced plastic mat 32 is, on the one hand, positively connected to the wood veneer part 18 due to the pressure load exerted by the press ram 14 and, on the other hand, additionally compressed. This is indicated in Fig. 2 by the smaller thickness of the pressed-on fiber-reinforced plastic mat 32.

Abstract

'invention concerne un procédé pour produire un élément d'aménagement intérieur de véhicule. Selon ce procédé, un élément moulé en bois (18) présentant un côté visible (22) et un côté postérieur (30) est pourvu d'une couche de renforcement (32) en matière plastique sur son côté postérieur (30). L'invention vise à optimiser ledit procédé de manière à permettre la production particulièrement économique de cet élément d'aménagement intérieur. A cet effet, on introduit l'élément moulé en bois (18) dans une presse (10) présentant une surface d'appui correspondant pratiquement au contour de la surface, côté visible, de l'élément moulé en bois, et le côté visible de ce dernier est placé contre la surface d'appui. On porte ensuite un matériau en plastique (32), renforcé par des fibres, à une température de mise en oeuvre à laquelle il est déformable plastiquement, et on l'applique sur le côté postérieur de l'élément moulé en bois avant de l'assembler à ce dernier par liaison de forme en le soumettant à une compression. L'invention concerne en outre un élément d'aménagement intérieur de véhicule, notamment un élément de placage en bois renforcé sur le côté postérieur, produit au moyen dudit procédé.
PCT/EP1999/001142 1998-04-29 1999-02-23 Procede pour produire un element d'amenagement interieur de vehicule, et element d'amenagement interieur ainsi obtenu WO1999055520A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP99910255A EP1075380A1 (fr) 1998-04-29 1999-02-23 Procede pour produire un element d'amenagement interieur de vehicule, et element d'amenagement interieur ainsi obtenu
HU0101325A HUP0101325A3 (en) 1998-04-29 1999-02-23 Method for producing an interior fitting for vehicles and corresponding interior fitting

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19819134A DE19819134A1 (de) 1998-04-29 1998-04-29 Verfahren zur Herstellung eines Innenausbauteiles für Fahrzeuge sowie danach hergestelltes Innenausbauteil
DE19819134.0 1998-04-29

Publications (1)

Publication Number Publication Date
WO1999055520A1 true WO1999055520A1 (fr) 1999-11-04

Family

ID=7866157

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP1999/001142 WO1999055520A1 (fr) 1998-04-29 1999-02-23 Procede pour produire un element d'amenagement interieur de vehicule, et element d'amenagement interieur ainsi obtenu

Country Status (4)

Country Link
EP (1) EP1075380A1 (fr)
DE (1) DE19819134A1 (fr)
HU (1) HUP0101325A3 (fr)
WO (1) WO1999055520A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1184168A2 (fr) * 2000-08-30 2002-03-06 Magna Emfisint Automotive S.A. Produit multicouche, son procédé de fabrication et son utilisation

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19961989A1 (de) * 1999-12-22 2001-10-18 Behr Automotive Gmbh Innenausbauteil für Kraftfahrzeuge
DE10244709A1 (de) * 2002-09-24 2004-04-01 Johnson Controls Interiors Gmbh & Co. Kg Ausstattungsteil, insbesondere für den Innenraum eines Kraftfahrzeugs
DE102004062646B4 (de) * 2004-12-21 2009-04-16 Takata-Petri Ag Lenkraddekorschalen und Interieurzierelemente sowie Verfahren zu deren Herstellung
DE102015007936A1 (de) 2015-06-19 2015-12-17 Daimler Ag Verfahren zum Herstellen eines Verstauelements für den Innenraum eines Fahrzeugs

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1994005480A1 (fr) * 1992-08-26 1994-03-17 Automotive Fascia Systems Limited Procede de fabrication d'articles avec un revetement de bois mince
JPH08112882A (ja) * 1994-10-17 1996-05-07 Takiron Co Ltd 木質化粧パネル及びその製造方法
EP0744261A1 (fr) * 1995-05-21 1996-11-27 Möller Plast GmbH Elément de structure composite, en particulier panneau avec revêtement et son procédé de fabrication

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DE4110640A1 (de) * 1990-04-05 1991-10-10 Richard Pott Formkoerper
DE4419908C2 (de) * 1994-06-07 1997-03-20 Lignotock Gmbh Verfahren zum Herstellen eines kaschierten Formteiles
DE4447645C2 (de) * 1994-09-27 1997-05-22 Pelz Ernst Empe Werke Verfahren zum Herstellen eines Formteils, insbesondere einer Innenverkleidung oder dergleichen für Kraftfahrzeuge
AT404690B (de) * 1995-03-08 1999-01-25 Magna Eybl Gmbh Verfahren zur herstellung von verkleidungsteilen aus faserverbundmatten sowie nach dem verfahren hergestellte verkleidungsteile
DE19622499A1 (de) * 1996-06-05 1997-12-11 Otto Deuschle Modell Und Forme Kunststoff-Formteil mit mehreren Feldern sowie Verfahren und Vorrichtung zu dessen Herstellung

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1994005480A1 (fr) * 1992-08-26 1994-03-17 Automotive Fascia Systems Limited Procede de fabrication d'articles avec un revetement de bois mince
JPH08112882A (ja) * 1994-10-17 1996-05-07 Takiron Co Ltd 木質化粧パネル及びその製造方法
EP0744261A1 (fr) * 1995-05-21 1996-11-27 Möller Plast GmbH Elément de structure composite, en particulier panneau avec revêtement et son procédé de fabrication

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 096, no. 009 30 September 1996 (1996-09-30) *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1184168A2 (fr) * 2000-08-30 2002-03-06 Magna Emfisint Automotive S.A. Produit multicouche, son procédé de fabrication et son utilisation
EP1184168A3 (fr) * 2000-08-30 2002-04-17 Magna Emfisint Automotive S.A. Produit multicouche, son procédé de fabrication et son utilisation
ES2172423A1 (es) * 2000-08-30 2002-09-16 Magna Emfisint Automotive S A Material laminar y procedimiento para su fabricacion y utilizacion correspondientes.

Also Published As

Publication number Publication date
EP1075380A1 (fr) 2001-02-14
DE19819134A1 (de) 1999-11-11
HUP0101325A2 (hu) 2001-08-28
HUP0101325A3 (en) 2001-09-28

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