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EP2266810B1 - Procédé et fabrication d'une plaque en matière synthétique tridimensionnelle imprimée et incurvée - Google Patents

Procédé et fabrication d'une plaque en matière synthétique tridimensionnelle imprimée et incurvée Download PDF

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Publication number
EP2266810B1
EP2266810B1 EP10006117.5A EP10006117A EP2266810B1 EP 2266810 B1 EP2266810 B1 EP 2266810B1 EP 10006117 A EP10006117 A EP 10006117A EP 2266810 B1 EP2266810 B1 EP 2266810B1
Authority
EP
European Patent Office
Prior art keywords
panel
process according
flat
thermoplastic
printing
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.)
Active
Application number
EP10006117.5A
Other languages
German (de)
English (en)
Other versions
EP2266810A1 (fr
Inventor
Manfred Nawroth
Peter Capellen
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.)
Bayer Intellectual Property GmbH
Original Assignee
Bayer Intellectual Property 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 Bayer Intellectual Property GmbH filed Critical Bayer Intellectual Property GmbH
Publication of EP2266810A1 publication Critical patent/EP2266810A1/fr
Application granted granted Critical
Publication of EP2266810B1 publication Critical patent/EP2266810B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M1/00—Inking and printing with a printer's forme
    • B41M1/40—Printing on bodies of particular shapes, e.g. golf balls, candles, wine corks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M3/00—Printing processes to produce particular kinds of printed work, e.g. patterns
    • B41M3/006—Patterns of chemical products used for a specific purpose, e.g. pesticides, perfumes, adhesive patterns; use of microencapsulated material; Printing on smoking articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M5/00—Duplicating or marking methods; Sheet materials for use therein
    • B41M5/0011—Pre-treatment or treatment during printing of the recording material, e.g. heating, irradiating
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/12—Supports; Mounting means
    • H01Q1/1271—Supports; Mounting means for mounting on windscreens
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M1/00—Inking and printing with a printer's forme
    • B41M1/12—Stencil printing; Silk-screen printing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41P—INDEXING SCHEME RELATING TO PRINTING, LINING MACHINES, TYPEWRITERS, AND TO STAMPS
    • B41P2200/00—Printing processes
    • B41P2200/40—Screen printing

Definitions

  • the invention relates to a method for the production of three-dimensional curved plastic discs, which are provided with printed electrical conductors.
  • the US-A 2006/045120 describes a method and a vehicle window made of plastic, in which an electrically conductive material is applied by means of a nozzle directly on the already shaped disc.
  • the nozzle is attached to a robot and travels the desired structure along the curved surface, the position / distance of the nozzle is determined by sensors exactly.
  • existing patterns show that the optical quality can not compete with existing systems.
  • the applied material forms an unsightly bead and there is a spray around the applied structure - both can not be avoided up to now. Furthermore, this process is very time consuming, the nozzle must drive off the complete structure along the surface.
  • Core element of the method according to the invention is to deform the three-dimensional curved plastic disc for the duration of the printing process by the exercise of pressure or train so that it is flat or approximately flat.
  • the plastic disc can be produced by injection molding or thermoforming.
  • this three-dimensionally curved plastic disk is then coated over the entire surface / part of the area. The coating ensures the scratch resistance and the weather resistance of the plastic disc.
  • step b) the plastic disk, which was optionally previously coated in step a), deformed:
  • the three-dimensionally curved plastic disk circumferentially by means of a frame-shaped element on a flat surface, such as a flat work table, pressed.
  • a frame-shaped element on a flat surface, such as a flat work table, pressed.
  • a partial surface can be pressed.
  • step c The plastic disk now lying flat on a plane is printed in step c), e.g. by screen printing process.
  • the printing inks are preferably electrically conductive screen printing inks, whereby printed circuit traces are printed, which can be used, for example, as heating elements or antennas.
  • step d) the disc is relieved by removing the pressure or the suction and curing the screen printing pattern.
  • step b), c) and d) can be repeated as often as desired in order to print other (screen) printing patterns and / or to print with other (screen) printing inks.
  • a frame-shaped screen print pattern can still be printed around the printed strip conductors, or pressure can still be applied to cover and protect the electrical strip conductors.
  • step a), the coating of the plastic disk, is carried out only after the printing as described in b) - d).
  • the component can be coated over the entire surface or partial area after printing.
  • the plastic disc is made of a thermoplastic material.
  • transparent or translucent thermoplastics can be used.
  • Suitable thermoplastics are, for example, polycarbonates or copolycarbonates based on diphenols, poly- or copolyacrylates and poly- or copolymers of copolymethacrylate, preferably polymethylmethacrylate, poly- or copolymers with styrene, preferably transparent polystyrene or polystyrene-acrylonitrile (SAN), transparent thermoplastic polyurethanes, and also polyolefins.
  • polypropylene types preferably transparent polypropylene types, or polyolefins based on cyclic olefins (for example, TOPAS ®, Ticona), poly- or copolycondensates of terephthalic acid, preferably poly- or copolyethylene terephthalate (PET or CoPET) or glycol-modified PET (PETG).
  • Particularly preferred materials are bisphenol A polycarbonate, copolycarbonates of bisphenol A and 1,1-bis (4-hydroxyphenyl) -3,3,5-trimethylcyclohexane, and poly- and methacrylates, in particular polymethyl methacrylate (PMMA).
  • PMMA polymethyl methacrylate
  • the wall thickness of the plastic disc is between 1 and 10 mm, in particular 2-7 mm.
  • the plastic disk may be both a one-component (1K) and a two-component (2K) component in which the transparent component is partially back-injected with a second plastic.
  • the first component is preferably made from a transparent thermoplastic, in particular from a polycarbonate or polymethyl methacrylate, and the second component is preferably made from a polycarbonate blend.
  • the coating has the task to protect the plastic disc both from environmental influences, such as UV radiation and other weathering caused by weathering, as well as against mechanical stress, for example against abrasion or scratches.
  • Glass-like surfaces for example plasma coatings, or commercially available scratch-resistant coatings, for example based on siloxane, polyurethane or acrylate, or combinations of these paints may be mentioned here.
  • the coatings are systems based on polysiloxane varnish, which can be both single-layered and multilayered (with a merely adhesion-promoting primer layer between substrate and polysiloxane topcoat). These are among others in US-A 4,278,804 . US-A 4,373,061 . US-A 4,410,594 .
  • the marginal fiber elongation determined in accordance with the DIN EN ISO 178 or ASTM-D 790-003 standards, should not exceed 2% in the component, preferably 1% and particularly preferably 0.5%.
  • the printing can be done for example with electrically conductive screen printing inks. These preferably have a sheet resistance that is less than 100 mOhm / sq / mil (determined by the four-point method). Providers of such colors are for example the company DuPont or the company Acheson.
  • the advantages of the method according to the invention are that it is very easy to perform, that no high investment costs for the system are necessary, and that the printing can be done at any time after production and before installation of the plastic disc. This makes the process simple, flexible, fast and cost-effective.
  • Areas of application are also generally in the area of curved 1K or 2K injection molded parts and thermoformed injection molded and extruded parts, e.g. in headlight and lamp covers and architectural glazing.
  • the method was tested on a three-dimensionally curved specimen measuring 1100 mm x 650 mm.
  • the component had a uniform wall thickness of 4.5 mm.
  • test specimen was produced from Makrolon AG2677 from Bayer MaterialScience AG by injection-compression molding and then coated on both sides with a paint system from the company Momentive Performance Materials (primer SHP 401 / paint AS4000).
  • a screen printing machine from the company Europa-Siebdruckmaschinen-Centrum, type ESC-AT-P semi-automatic for lithographic printing, was modified.
  • a frame-shaped steel element was attached to the motor-driven sieve frame lift.
  • the dimensions of the frame-shaped element were adapted to the size of the component, so that during the actual printing process, the specimen was pressed by the frame-shaped element circumferentially flat on the printing table. In this embodiment resulted by holding down an edge fiber elongation of 0.3%.
  • the three-dimensional specimen was placed with the curvature up on the printing table and positioned. Subsequently, the Siebrahmenhebung was moved vertically down and pressed the component by the attached frame-shaped element flat on the printing table. At the same time, vacuum holes in the printing table ensured that the component rests almost level. This was followed by the well-known from the prior art screen printing step. The screen frame elevation with the frame-shaped element was moved vertically after completion of the screen printing and the now free component could be removed. Finally, the component goes through a drying process to dry the screen printing ink.
  • the component was printed with a conductive screen printing ink from DuPont.
  • the printed image corresponded to a standard heating field of vehicle rear windows.
  • the layer thickness of the screen printing in order to increase the layer thickness of the screen printing and to improve the conductivity, printed on the same components in an analogous manner, and the printing step - sometimes even several times - repeated. For some of these samples, the intervening drying step was even omitted, so that the screen printing ink was printed "wet in wet” and finally dried.
  • the layer thicknesses of the screen printing ink could be applied with different thicknesses. In any case, a print sample of very good quality could be easily produced.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Pest Control & Pesticides (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)
  • Printing Methods (AREA)

Claims (13)

  1. Procédé pour la fabrication d'une plaque en matériau synthétique imprimée, incurvée en 3 dimensions en matériau synthétique thermoplastique, caractérisé en ce que la plaque est déformée pendant la durée de l'impression de manière telle qu'elle est plane ou quasiment plane.
  2. Procédé selon la revendication 1, comprenant les étapes suivantes :
    a) revêtement sur tout la surface ou une partie de surface d'une plaque en matériau synthétique incurvée en 3 dimensions en matériau synthétique thermoplastique,
    b) déformation de la surface complète de la plaque en matériau synthétique incurvée en 3 dimensions ou d'une surface partielle de la plaque, de manière telle qu'elle présente une surface plane ou quasiment plane
    c) impression de la plaque en matériau synthétique à plat par un procédé de sérigraphie
    d) relâchement de la plaque et durcissement du motif sérigraphié.
  3. Procédé selon la revendication 2, caractérisé en ce que les étapes b-d) sont répétées plusieurs fois.
  4. Procédé selon la revendication 2 ou 3, caractérisé en ce que l'étape a) n'est réalisée qu'après les étapes b-d) ou qu'après une répétition multiple des étapes b-d).
  5. Procédé selon l'une quelconque des revendications 2 à 4, caractérisé en ce que la déformation a lieu par impression sur une surface plane à l'aide d'un élément en forme de cadre.
  6. Procédé selon l'une quelconque des revendications 2 à 4, caractérisé en ce que la déformation de la plaque a lieu par aspiration par un vide sur la face arrière de la plaque par rapport à l'impression.
  7. Procédé selon l'une quelconque des revendications 2 à 4, caractérisé en ce que la déformation a lieu par aspiration par un vide sur la face arrière de la plaque par rapport à l'impression et par compression sur une surface plane à l'aide d'un élément en forme de cadre.
  8. Procédé selon l'une quelconque des revendications 1 à 7, caractérisé en ce que l'impression a lieu pour l'impression de pistes conductrices électriques et/ou à des fins décoratives.
  9. Procédé selon l'une quelconque des revendications 1 et 2, caractérisé en ce que la plaque en matériau synthétique a été produite par moulage par injection, moulage par injection-compression ou thermoformage.
  10. Procédé selon la revendication 9, caractérisé en ce que la plaque en matériau synthétique thermoplastique est constituée par un thermoplastique transparent, en particulier un polycarbonate ou un poly(méthacrylate de méthyle).
  11. Procédé selon la revendication 9, caractérisé en ce que la plaque en matériau synthétique a été produite par un moulage par injection à deux composants.
  12. Procédé selon la revendication 11, caractérisé en ce que la plaque en matériau synthétique thermoplastique est constituée par un thermoplastique transparent, en particulier un polycarbonate ou un poly(méthacrylate de méthyle) et le deuxième composant est un mélange de polycarbonates.
  13. Procédé selon la revendication 9, caractérisé en ce que la plaque en matériau synthétique présente une épaisseur de 1-10 mm, en particulier de 2-7 mm.
EP10006117.5A 2009-06-25 2010-06-12 Procédé et fabrication d'une plaque en matière synthétique tridimensionnelle imprimée et incurvée Active EP2266810B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102009030341 2009-06-25

Publications (2)

Publication Number Publication Date
EP2266810A1 EP2266810A1 (fr) 2010-12-29
EP2266810B1 true EP2266810B1 (fr) 2013-10-16

Family

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EP10006117.5A Active EP2266810B1 (fr) 2009-06-25 2010-06-12 Procédé et fabrication d'une plaque en matière synthétique tridimensionnelle imprimée et incurvée

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Country Link
EP (1) EP2266810B1 (fr)
JP (1) JP6176644B2 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109591473A (zh) * 2018-12-29 2019-04-09 刘爱军 一种5d立体悬浮打印方法

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019000315A1 (fr) * 2017-06-29 2019-01-03 江苏百特电器有限公司 Procédé d'impression pour plaque d'identification de tondeuse à cheveux
DE102018001208B3 (de) 2018-02-14 2019-07-11 INPRO Innovationsgesellschaft für fortgeschrittene Produktionssysteme in der Fahrzeugindustrie mbH Verfahren zur Herstellung einer funktionsintegrierbaren elektrisch leitenden Kunststoffsubstrat-Struktur

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US4057671A (en) * 1975-06-27 1977-11-08 Ppg Industries, Inc. Heated laminated window and method of assembling same
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US4278804A (en) 1980-05-30 1981-07-14 General Electric Company Ultraviolet light absorbing agents and compositions and articles containing same
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US5090320A (en) * 1990-03-26 1992-02-25 Nave Bart I Shoe printing process and apparatus
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AU2001268631A1 (en) * 2000-06-21 2002-01-02 Thomas V. Cutcher Method and apparatus for printing on a curved substrate
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JP2004165330A (ja) * 2002-11-12 2004-06-10 Sanyo Electric Co Ltd 半導体装置の製造方法
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109591473A (zh) * 2018-12-29 2019-04-09 刘爱军 一种5d立体悬浮打印方法

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Publication number Publication date
JP6176644B2 (ja) 2017-08-09
EP2266810A1 (fr) 2010-12-29
JP2011011547A (ja) 2011-01-20

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