EP1672609A2 - Elément plastique multicouche - Google Patents

Elément plastique multicouche Download PDF

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Publication number
EP1672609A2
EP1672609A2 EP05024677A EP05024677A EP1672609A2 EP 1672609 A2 EP1672609 A2 EP 1672609A2 EP 05024677 A EP05024677 A EP 05024677A EP 05024677 A EP05024677 A EP 05024677A EP 1672609 A2 EP1672609 A2 EP 1672609A2
Authority
EP
European Patent Office
Prior art keywords
plastic part
multilayer plastic
optically active
active layer
layer
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.)
Withdrawn
Application number
EP05024677A
Other languages
German (de)
English (en)
Other versions
EP1672609A3 (fr
Inventor
Thomas Schettler
Peter Oehring
Bernd Hangleiter
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.)
Rehau Automotive SE and Co KG
Original Assignee
Rehau AG and Co
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 Rehau AG and Co filed Critical Rehau AG and Co
Publication of EP1672609A2 publication Critical patent/EP1672609A2/fr
Publication of EP1672609A3 publication Critical patent/EP1672609A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F13/00—Illuminated signs; Luminous advertising
    • G09F13/04—Signs, boards or panels, illuminated from behind the insignia

Definitions

  • the invention relates to a multilayer plastic sheet-like part for decorative elements and / or display and functional elements, such as, for example, application in the automotive industry, in particular at manhole covers, trim panels and function displays found.
  • a backlit plastic part for display and / or functional elements This consists of a transparent polymer material, which is vapor-deposited on the visible side with a thin metal layer. For protection, for example against mechanical damage, a scratch-resistant paint is usually applied to the metal layer.
  • lighting fixtures one or more spotlights illuminating spot or surfaces are provided behind or in the plastic part, so that diffuse light emerges on the visible side at least in the region of the illuminated field through the metal layer.
  • display symbols or decorative elements can be introduced into the surface, for example by means of laser structuring, so that the light can pass through unhindered there.
  • a disadvantage of this embodiment is in particular the fact that the optically and / or functionally relevant layers are on the surface (visible side) of the component and therefore must be protected by a transparent cover layer against chemical and mechanical influences. Furthermore, due to the overhead metal layer results in a surface without depth effect and with reduced brilliance. Finally, the metal layer of the backlightable plastic part is protected only on the surface, but not laterally, so that a corrosive infiltration of the metal layer can easily occur.
  • the object is to provide a functional part and / or trim part in the form of a plastic part, which has an easy-to-clean, smooth and resistant surface, shows a brilliant, metallic gloss with depth effect and in the built-in state, even in chemically aggressive environment has a long service life.
  • Another object is to provide a variety of optical effects on the functional part and / or trim part available.
  • the object could be achieved by a multilayer plastic part with the features of claim 1.
  • Preferred embodiments and further developments can be found in the subclaims.
  • the method for producing the multilayer plastic part is carried out according to the features of claim 15.
  • the optically effective, but scratch-sensitive layer for example in the form of a thin metal layer, is applied to the sheet-like plastic part, which comprises two sides, on the first side.
  • This side is the side of the part opposite the visible side in the installed state.
  • the two sides of the sheet-like plastic part face each other.
  • the transparent plastic part not only serves as a carrier for the applied coatings, but also functions as its protective layer.
  • the scratch-resistant coating of the optically active layer can be dispensed with.
  • the inventive design of the plastic part allows structuring of the first side of the part. As a result, a variety of optical effects can be realized.
  • the thickness of the transparent plastic part which is generally about 1 to 5 mm, optically results in the desired depth effect of the multilayer structure according to the invention in the form of a particularly brilliant image of the optically active layer and the introduced structures.
  • the plastic part has decorative elements and functional elements.
  • the following structure is proposed, wherein the layer sequence is described as follows:
  • the plastic part consists of a carrier part made of a polymer, on the sides of which layers are applied.
  • the support member is designed substantially flat, here for the inventive idea relevant sides of the support member are opposite.
  • the transparent support member itself is made of polycarbonate or polystyrene or polyethylene terephthalate or polymethylmethacrylate or their mixed compositions and compounds.
  • the polymer material is preferably colorless, highly transparent and clear.
  • a colored, less transparent, in particular an opaque material can also be used.
  • special light scattering effects can be achieved.
  • a metal or plastic film can be applied, which can partially or completely cover the transparent support part.
  • This layer is preferably attached to the outer boundary of the plastic part, wherein the part is preferably a piece covered in the edge region and so forms a frame assembly that can hold the plastic part, for example, in the installed position.
  • This layer can be provided with decors and thereby be upgraded in a special way visually.
  • the first side of the carrier part is provided according to the invention with the optically active layer.
  • the first side of the carrier part is structured.
  • the structure may be defined macroscopically - for example by a groove structure - or by surface fine structures such as satin-like textures, brush textures, stochastic or directional groove textures.
  • Such structures can be very easily introduced into the carrier part by a corresponding design of the injection molding tool, as far as the carrier part is produced by injection molding.
  • the corresponding surface which is intended to image a structure on the carrier part to be produced by injection molding on its first side, is designed in accordance with the negative shape of the structure.
  • Other techniques for introducing structures onto the first surface include e.g. As laser techniques, beam techniques, milling techniques, engraving techniques, and others.
  • the second side of the carrier part is preferably formed smooth, but it can also be provided there the introduction of structures in the surface.
  • the further layer structure of the plastic part according to the invention is as follows.
  • An optically active layer is applied to the optionally provided with structures first side of the support member.
  • layers of metals such as aluminum (Al) or chromium (Cr), but also of metal alloys consisting of chromium and aluminum or nickel and chromium, or of metal compounds, such as titanium nitride (TiN) or titanium carbide (TiC) or other colored translucent layers, such as paint, color or foil layers serve.
  • metals such as aluminum (Al) or chromium (Cr)
  • metal alloys consisting of chromium and aluminum or nickel and chromium
  • metal compounds such as titanium nitride (TiN) or titanium carbide (TiC) or other colored translucent layers, such as paint, color or foil layers serve.
  • the layer thickness is preferably chosen such that the light transmission of the layer is in the range between 0 and 70%, preferably in the range between 10 and 30%.
  • the optically active layer can be completely or partially removed again in desired regions, in particular by the action of laser radiation, it being possible to produce, for example, dot arrangements, close-meshed line screens or other - in particular very finely structured - geometric patterns and markings. As a result, in particular zones of higher light transmission can be produced.
  • the laser beam strikes the optically active layer, which is arranged on the first side and dissolves the metal layer by heating and Absprengreae. This can also be done on the second side of the plastic part.
  • Partial ablation of the optically active layer results in contrast effects.
  • the following contrast situations can be generated at adjacent locations on the surface of the plastic part: "Semi-translucent to opaque” or “Semi-translucent to completely translucent", which additional designerische opportunities for highlighting example of fonts, marks or symbols on the surface of the component are possible.
  • light transmissions can thus be produced which are freely selectable from completely translucent to partially translucent to substantially opaque.
  • the optically active layer is flat, but only partially covered by a panel.
  • the aperture function results advantageously by a print.
  • a suitable application method of a coating composition for example the printing of a printing ink or a covering lacquer, which can be adjusted in black, white or color, a covering-agent-covering covering agent layer is applied.
  • This layer is chosen in its thickness so that it does not allow light to pass through and therefore acts as a diaphragm.
  • a design effect can be achieved by the choice of color by the coloring made visible in the thus produced screen from the visible side.
  • the layer composite of optically active layer and aperture can additionally be provided with a transparent protective lacquer.
  • the coating and the printing is not applied to the edges of the transparent plastic part, so that the layer composite, covered by the resist, a chemical attack is not accessible. As a result, particular advantages in terms of the durability of the composite layer are achieved.
  • the plastic part according to the invention can furthermore be combined with a light source.
  • the light source is preferably arranged so that it radiates through the plastic part according to the invention by directing light onto the first side of the carrier part, and - after passage of the light through the carrier part - this emerges on the second side of the carrier part.
  • the light source can also be arranged laterally of the carrier part or directly in the carrier part.
  • the light source may consist of a thin, current-fed luminous film (eg an electroluminescent film), but are, depending on the application, also versions with a so-called.
  • light can also be guided by means of optical fibers which are arranged between the light source and the carrier part, the optical fibers having a conductive and / or focusing and / or scattering effect on the guided light.
  • a self-illuminating foil display can be arranged as a "backlighting source".
  • the plastic part according to the invention serves as a metallic display cover. This version can be used for displays. If one uses a plastic part according to the invention as a trim panel and couples it with a stored display, the system functions as a visually particularly high-quality display unit.
  • a so-called night design can be generated - for example, in conjunction with a suitable metallization and / or structuring and / or printing - which also serves the lighting simultaneously.
  • the optional metal or plastic film on the second side which represents the visible side, can additionally - over the entire surface or optionally partially - with a scratch-resistant coating be provided that is colorless or colored transparent or colored semi-transparent.
  • FIG. 1 shows the layer structure according to the invention in cross section.
  • the multilayer flat plastic part (1) consists of a carrier part (2).
  • the support part (2) of a transparent polymer material has a wall thickness of about 3.0 mm, it is on the second side (2b) partially covered with a foil (3) made of stainless steel, on the first side (2a) are structures applied in a section (2c). It is vapor-deposited on the first side (2a) with an optically active layer (4) of aluminum in a thickness of about 50 nm, wherein parts of the aluminum layer (4) were removed by laser ablation in the section (2d).
  • the aluminum layer (4) is partially covered with a diaphragm (5) of black ink of a thickness of about 15 microns.
  • the sealing takes place with a transparent lacquer (6).
  • This layer composite is finally partially laminated on the first side with a light-emitting electroluminescent film (7).
  • the multilayer plastic part is produced by the following method:
  • the metal and / or plastic film (3) is first preformed, for example, by pressing it over a negative mold.
  • the preformed film (3) is then punched in a device and / or trimmed by means of a laser.
  • the trimmed film (3) is placed in an injection mold, which can be done by means of a robot, as this high positioning accuracy is achieved.
  • the layer composite can be provided with a protective lacquer (6).
  • a protective lacquer (6) This protects the metal layer (4) from external influences, in particular from corrosion.
  • the selection of a suitable protective lacquer (6) makes special demands, since it is in contact with both the polymer material of the support part (2), as well as the metal layer (4) and the diaphragm (5).
  • the protective lacquer (6) ensures the adhesion and is formulated such that in particular the metal layer (4) is not dissolved or attacked.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Laminated Bodies (AREA)
EP05024677A 2004-12-16 2005-11-11 Elément plastique multicouche Withdrawn EP1672609A3 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE200410060453 DE102004060453A1 (de) 2004-12-16 2004-12-16 Mehrschichtiges Kunststoffteil

Publications (2)

Publication Number Publication Date
EP1672609A2 true EP1672609A2 (fr) 2006-06-21
EP1672609A3 EP1672609A3 (fr) 2008-07-23

Family

ID=36121474

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05024677A Withdrawn EP1672609A3 (fr) 2004-12-16 2005-11-11 Elément plastique multicouche

Country Status (2)

Country Link
EP (1) EP1672609A3 (fr)
DE (1) DE102004060453A1 (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202007018495U1 (de) 2007-02-26 2008-09-18 Foliotec Gmbh Verbundformteil
DE202013006187U1 (de) 2013-07-10 2013-08-23 Gerhardi Kunststofftechnik Gmbh Dekoriertes Anbauteil aus Kunststoff
DE102014010255A1 (de) 2014-10-10 2016-04-14 Gerhardi Kunststofftechnik Gmbh Dekoriertes Anbauteil aus Kunststoff
DE102017003036A1 (de) 2017-03-29 2018-10-04 Singulus Technologies Ag Leuchtkörper
DE102017206875A1 (de) * 2017-04-24 2018-10-25 Faurecia Innenraum Systeme Gmbh Verfahren zur Herstellung einer Abdeckung für ein Leuchtelement und Abdeckung
DE102017218626A1 (de) * 2017-10-18 2019-04-18 Bayerische Motoren Werke Aktiengesellschaft Instrumententafel mit einer Luftauslassvorrichtung sowie hiermit ausgestattetes Kraftfahrzeug
DE102019131521A1 (de) 2019-11-21 2021-05-27 Rehau Ag + Co Verfahren zum Beschichten eines Kunststoffbauteils und Kunststoffbauteil
DE102021134367A1 (de) 2021-12-22 2023-06-22 Rehau Automotive Se & Co. Kg Verfahren zur Herstellung eines durchleuchtbaren Außenverkleidungsteils eines Kraftfahrzeugs

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3694945A (en) * 1969-11-07 1972-10-03 Jakob Detiker Optical element for illumination
DE4015170A1 (de) * 1989-05-15 1990-11-22 Yazaki Corp Kraftfahrzeug-messgeraet
GB2290651A (en) * 1994-06-23 1996-01-03 Porsche Ag Illuminable vehicle display
WO2002089101A1 (fr) * 2001-04-26 2002-11-07 Packer Innovations Limited Enseigne eclairee

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4373283A (en) * 1981-07-06 1983-02-15 Embosograph Display Mfg. Co. Advertising simulated neon sign display
EP1058227B1 (fr) * 1999-06-01 2006-07-05 Artlite Limited Panneau d'affichage et enseigne lumineuse
DE19951404B4 (de) * 1999-10-26 2006-06-14 Westiform Gmbh & Co. Kg Verfahren zur Herstellung der Deckplatte einer Leuchtreklame
DE20105140U1 (de) * 2001-03-24 2001-07-05 Schneider Franz Kunststoffwerk Hinterleuchtetes Kunststoffteil für Anzeige- und/oder Funktionseinstellelemente
DE10320467B4 (de) * 2003-05-08 2006-02-16 Bayerische Motoren Werke Ag Beleuchtbares Bauteil mit Leuchtfolie und integriertem Spannungswandler

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3694945A (en) * 1969-11-07 1972-10-03 Jakob Detiker Optical element for illumination
DE4015170A1 (de) * 1989-05-15 1990-11-22 Yazaki Corp Kraftfahrzeug-messgeraet
GB2290651A (en) * 1994-06-23 1996-01-03 Porsche Ag Illuminable vehicle display
WO2002089101A1 (fr) * 2001-04-26 2002-11-07 Packer Innovations Limited Enseigne eclairee

Also Published As

Publication number Publication date
DE102004060453A1 (de) 2006-06-29
EP1672609A3 (fr) 2008-07-23

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