EP2087943A1 - Method for providing a patterned coating - Google Patents

Method for providing a patterned coating Download PDF

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Publication number
EP2087943A1
EP2087943A1 EP08002095A EP08002095A EP2087943A1 EP 2087943 A1 EP2087943 A1 EP 2087943A1 EP 08002095 A EP08002095 A EP 08002095A EP 08002095 A EP08002095 A EP 08002095A EP 2087943 A1 EP2087943 A1 EP 2087943A1
Authority
EP
European Patent Office
Prior art keywords
substrate
patterned
coating
magnetic field
coating composition
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Withdrawn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
EP08002095A
Other languages
German (de)
French (fr)
Inventor
Joergen Lindberg
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.)
GM Global Technology Operations LLC
Original Assignee
GM Global Technology Operations LLC
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 GM Global Technology Operations LLC filed Critical GM Global Technology Operations LLC
Priority to EP08002095A priority Critical patent/EP2087943A1/en
Publication of EP2087943A1 publication Critical patent/EP2087943A1/en
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
    • B05D3/20—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by magnetic fields
    • B05D3/203—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by magnetic fields pre-treatment by magnetic fields
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D5/00—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures
    • B05D5/06—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures to obtain multicolour or other optical effects
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
    • B05D3/20—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by magnetic fields
    • B05D3/207—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by magnetic fields post-treatment by magnetic fields

Definitions

  • the present invention relates to a method for providing a patterned coating on a substrate, such as an automotive part.
  • Automotive parts are often coated, painted, lacquered or the like.
  • the coating preferably have protecting properties, but also give a nice visible appearance of the automotive part.
  • Advanced patterns on coated articles give a nice appearance to the article, and also to products comprising the articles.
  • handcraft is typically needed, which is both time demanding and very expensive.
  • the pattern and the precision depend on the skills of the person performing the pattern.
  • Another general object is to provide a method, which provides the possibility to reduce pressed surface geometries of automotive articles, which reduces the risk for corrosion and/or which results in articles which can easily be washed.
  • the present invention relates to a method for providing a patterned coating on a substrate, said method comprising:
  • a patterned coating on a surface of a at least partly magnetizable substrate is provided, wherein a pattern, which is advanced; which has new exciting looks; or which provides a three dimensional effect easily can be achieved. Further, it is possible to produce a pattern over a large surface area efficiently, less expensive and with improved results compared to the existing alternatives.
  • the method is beneficial for large production volumes and can easily be standardized.
  • a patterned painting on an automotive part an impression of e.g. a shadow can be produced on the part.
  • the automotive parts such as on the car body
  • press lines can many times be replaced by a patterned painting, which gives the illusion of the fold.
  • the car body part can be more planar, reducing the pressing of the automotive part and providing a more easily washed part. This reduces the corrosion problematic.
  • the magnetic field is arranged in the substrate by at least partly magnetizing the substrate by an external patterned magnetic field; and removing the external field when the substrate is at least partly magnetized.
  • the magnetizable material of the substrate comprises a ferromagnetic material.
  • a patterned magnetic filed is readily arranged.
  • the magnetic component of the coating composition comprises a ferromagnetic material.
  • the magnetic component of the coating composition can for example be small flakes or needles, which readily aligns to the patterned magnetic field of the substrate.
  • the method may also comprise fixating said coating composition on said substrate.
  • the method may also comprise the step of demagnetizing the substrate, since it in subsequent steps of the processing of the substrate may be disadvantageous to have a magnetized substrate.
  • the method of the present invention is used for coating an automotive part, such as carriage body part, with a patterned coating.
  • Fig. 1a illustrates a method for arranging a patterned magnetic field in a substrate.
  • Fig. 1b illustrates a method for applying a coating composition onto a substrate.
  • Fig. 1c illustrates a third step of the coating method.
  • FIG.1a where a method according to the invention for arranging a patterned magnetic field in a magnetizable substrate 1 is schematically illustrated.
  • a magnetizing device 2 producing a patterned magnetic field is applied to the substrate 1, for obtaining an at least partly magnetized substrate.
  • the magnetizing device 2 is removed.
  • the patterned magnetic field of the magnetizing device is essentially reproduced in the obtained magnetic field of the magnetizable substrate 1.
  • the field strength of the magnetic field of the magnetizing device, as well as the time sufficient to produce the magnetic field in the substrate, depends on the material properties of the substrate. However, these conditions are obvious to the skilled person trying to utilize the present invention.
  • the magnetic field can be generate by any technology providing magnetic fields, such as using electrically producing magnetic fields or using a magnetic material, such as ferromagnetic materials.
  • patterned magnetic field arranged in a substrate refers to a magnetic field that exhibits a varying field strength, direction and/or polarity over the surface of the substrate that is to be coated.
  • the magnetizable substrate is a ferromagnetic material, such as iron steel, or any other ferromagnetic material commonly used in automotive parts.
  • the substrate may be a non-ferromagnetic carrier material that comprises ferromagnetic material held by, such as dispersed or distributed in, the non-ferromagnetic carrier.
  • the coating composition can be applied by any method commonly known coating method, such as for example spraying the coating composition onto the substrate 1.
  • the coating composition is typically a liquid coating composition, such as a lacquer or a paint, which comprises a magnetic component, for example in the form of metal flakes or needles dispersed therein.
  • the coating can have any chemical state such as a liquid, solid, dispersion or a suspension as long as a patterned coating can be obtained.
  • the magnetic component may have a desired colour, for example a different colour tone of or a contrast colour to that of the coating composition, or may be metallic, black, etc.
  • the magnetic component of the coating composition is allowed to align to the patterned magnetic field of the substrate.
  • a coated substrate comprising a pattern, which has formed using the method according to the invention, is shown.
  • the coating is preferably fixated, e.g. cured, hardened or dried, to fixate the pattern.
  • the substrate When the pattern has been fixated onto the substrate, it may be advantageous to demagnetize the substrate. This can be done by any demagnetizing procedures known to those skilled in the art.
  • patterned magnetic field different patterns can be used, such as a line, a dot, circles, symbols, and schematics of objects and images.
  • the method of the present invention can be used for producing a pattern which has any geometrical shape or shapes and/of for producing visible effects such as shadows and 3D effects.
  • the substrate does not need to be planar. Instead, the means for arranging the magnetic field in the substrate can have a shape adapted to fit any curvature of the substrate. Further, the coating can refer to a continuous or discontinuous layer or film, which is formed on the substrate.
  • the coating method can be repeated on the substrate surface in order to create multi layer effects.
  • the coating method can be a paint or screen printing technology. In addition, it can be combined with additional processes, such as laser etching.

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  • Application Of Or Painting With Fluid Materials (AREA)

Abstract

A method for providing a patterned coating on a substrate is provided. The method comprises: providing a substrate comprising a magnetizable material; arranging a patterned magnetic field in said substrate; applying a coating composition onto said substrate, wherein said coating composition comprises at least one magnetic component; and allowing said at least one magnetic component to align to said patterned magnetic field.
By the method of the invention, a patterned coating, for example having the impression of a 3D-pattern can easily be obtained.

Description

    Field of the Invention
  • The present invention relates to a method for providing a patterned coating on a substrate, such as an automotive part.
    • Technical Background
  • Automotive parts are often coated, painted, lacquered or the like. The coating preferably have protecting properties, but also give a nice visible appearance of the automotive part.
  • Advanced patterns on coated articles give a nice appearance to the article, and also to products comprising the articles. For creating advanced patterns, handcraft is typically needed, which is both time demanding and very expensive. In addition, the pattern and the precision depend on the skills of the person performing the pattern.
  • Hence, there is a need in the art for an efficient and less expensive coating method for producing advanced patterned layers on automotive parts, especially a method that is applicable on conventional iron steel material.
  • Especially, it is desirable to find a method for providing a patterned coating on a surface of a substrate, which can provide new exciting advanced patterns, which can provide a three dimensional effect, which efficiently can produce a pattern over a large surface area, which is less expensive than the existing alternatives, which can be used for large production volumes and/or which can easily be standardized.
    • Summary of the Invention
  • It is an object of the present invention to at least partly overcome the above-mentioned problems of the prior art and to at least partly meet the needs in the art, and thus to provide a method for obtaining a patterned coating on a surface of an at least partly magnetizable substrate.
  • Another general object is to provide a method, which provides the possibility to reduce pressed surface geometries of automotive articles, which reduces the risk for corrosion and/or which results in articles which can easily be washed.
  • These and other objects are achieved by methods and products according to the present invention.
  • Thus, in a first aspect, the present invention relates to a method for providing a patterned coating on a substrate, said method comprising:
    • providing a substrate, comprising a magnetizable material;
    • arranging a patterned magnetic field in said substrate;
    • applying a coating composition onto said substrate, wherein said coating composition comprises at least one magnetic component; and
    • allowing said at least one magnetic component to align to said patterned magnetic field.
  • By the method of the present invention, a patterned coating on a surface of a at least partly magnetizable substrate is provided, wherein a pattern, which is advanced; which has new exciting looks; or which provides a three dimensional effect easily can be achieved. Further, it is possible to produce a pattern over a large surface area efficiently, less expensive and with improved results compared to the existing alternatives. Advantageously, the method is beneficial for large production volumes and can easily be standardized.
  • For example, by a patterned painting on an automotive part, an impression of e.g. a shadow can be produced on the part. Conventionally, the automotive parts, such as on the car body, is provided with press lines to give it the desired appearance. These press lines can many times be replaced by a patterned painting, which gives the illusion of the fold. As a result, the car body part can be more planar, reducing the pressing of the automotive part and providing a more easily washed part. This reduces the corrosion problematic.
  • In embodiments of the invention, the magnetic field is arranged in the substrate by at least partly magnetizing the substrate by an external patterned magnetic field; and removing the external field when the substrate is at least partly magnetized.
  • Typically, the magnetizable material of the substrate comprises a ferromagnetic material. In such a material, a patterned magnetic filed is readily arranged.
  • In embodiments of the present invention, the magnetic component of the coating composition comprises a ferromagnetic material.
  • The magnetic component of the coating composition can for example be small flakes or needles, which readily aligns to the patterned magnetic field of the substrate.
  • In embodiments of the present invention, the method may also comprise fixating said coating composition on said substrate.
  • This is typically done by curing, hardening, drying or the like of the coating composition.
  • In embodiments of the present invention, the method may also comprise the step of demagnetizing the substrate, since it in subsequent steps of the processing of the substrate may be disadvantageous to have a magnetized substrate.
  • In a second aspect of the present invention, the method of the present invention is used for coating an automotive part, such as carriage body part, with a patterned coating.
  • These and other objects of the present invention will be apparent from the following detailed description of the present invention.
    • Brief Description of the Drawings
  • The invention will now be described in more detail with reference to the accompanying schematic drawing, which by way of example illustrates an currently preferred embodiment of the invention.
  • Fig. 1a illustrates a method for arranging a patterned magnetic field in a substrate.
  • Fig. 1b illustrates a method for applying a coating composition onto a substrate.
  • Fig. 1c illustrates a third step of the coating method.
    • Detailed Description of Preferred Embodiments
  • An embodiment of the invention related to a coating method for providing a coating, such as a film, layer or the like, on a surface of a magnetizable substrate, wherein the coating method provides an advanced pattern will be described in more detail in the following with reference to the accompanying drawing.
  • Referring now to Fig.1a, where a method according to the invention for arranging a patterned magnetic field in a magnetizable substrate 1 is schematically illustrated. A magnetizing device 2 producing a patterned magnetic field is applied to the substrate 1, for obtaining an at least partly magnetized substrate. When the substrate has obtained a sufficient magnetic field, the magnetizing device 2 is removed. As a result, the patterned magnetic field of the magnetizing device is essentially reproduced in the obtained magnetic field of the magnetizable substrate 1.
  • The field strength of the magnetic field of the magnetizing device, as well as the time sufficient to produce the magnetic field in the substrate, depends on the material properties of the substrate. However, these conditions are obvious to the skilled person trying to utilize the present invention.
  • The magnetic field can be generate by any technology providing magnetic fields, such as using electrically producing magnetic fields or using a magnetic material, such as ferromagnetic materials.
  • The term "patterned magnetic field arranged in a substrate" as is used herein, refers to a magnetic field that exhibits a varying field strength, direction and/or polarity over the surface of the substrate that is to be coated.
  • Typically, the magnetizable substrate is a ferromagnetic material, such as iron steel, or any other ferromagnetic material commonly used in automotive parts. Alternatively, the substrate may be a non-ferromagnetic carrier material that comprises ferromagnetic material held by, such as dispersed or distributed in, the non-ferromagnetic carrier.
  • Referring now to Fig.1b, where a method according to the invention for applying a coating composition 4 onto the substrate 1 is disclosed. The coating composition can be applied by any method commonly known coating method, such as for example spraying the coating composition onto the substrate 1.
  • The coating composition is typically a liquid coating composition, such as a lacquer or a paint, which comprises a magnetic component, for example in the form of metal flakes or needles dispersed therein.
  • However, the coating can have any chemical state such as a liquid, solid, dispersion or a suspension as long as a patterned coating can be obtained.
  • The magnetic component may have a desired colour, for example a different colour tone of or a contrast colour to that of the coating composition, or may be metallic, black, etc.
  • After the coating composition is applied to the surface according to Fig. 1b, the magnetic component of the coating composition is allowed to align to the patterned magnetic field of the substrate.
  • Referring now to Fig.1c, a coated substrate comprising a pattern, which has formed using the method according to the invention, is shown.
  • After the pattern has been obtained in the coating, the coating is preferably fixated, e.g. cured, hardened or dried, to fixate the pattern.
  • When the pattern has been fixated onto the substrate, it may be advantageous to demagnetize the substrate. This can be done by any demagnetizing procedures known to those skilled in the art.
  • Although the present invention has been described in connection with particular embodiments thereof, it is to be understood that various modifications, alterations and adaptations may be made by those skilled in the art without departing from the claimed scope.
  • For example regarding the patterned magnetic field, different patterns can be used, such as a line, a dot, circles, symbols, and schematics of objects and images. The method of the present invention can be used for producing a pattern which has any geometrical shape or shapes and/of for producing visible effects such as shadows and 3D effects.
  • The substrate does not need to be planar. Instead, the means for arranging the magnetic field in the substrate can have a shape adapted to fit any curvature of the substrate. Further, the coating can refer to a continuous or discontinuous layer or film, which is formed on the substrate.
  • The coating method can be repeated on the substrate surface in order to create multi layer effects. The coating method can be a paint or screen printing technology. In addition, it can be combined with additional processes, such as laser etching.

Claims (8)

  1. A method for providing a patterned coating on a substrate, said method comprising:
    a) providing a substrate, comprising a magnetizable material;
    b) arranging a patterned magnetic field in said substrate;
    c) applying a coating composition onto said substrate, wherein said coating composition comprises at least one magnetic component; and
    d) allowing said at least one magnetic component to align to said patterned magnetic field.
  2. A method according to claim 1, wherein arranging a patterned magnetic field in said substrate comprises:
    at least partly magnetizing said substrate by an external patterned magnetic field; and
    removing said external magnetic field when the substrate is at least partly magnetized.
  3. A method according to claim 1 or 2, wherein said magnetizable material of the substrate comprises a ferromagnetic material.
  4. A method according to any of the preceding claims, wherein said magnetic component of the coating composition comprises a ferromagnetic material.
  5. A method according to any of the preceding claims, further comprising
    e) fixating said coating composition on said substrate.
  6. A method according to claim 5, further comprising
    f) demagnetizing said substrate.
  7. Use of method according to claim 1 for arranging a patterned coating on automotive parts.
  8. An article having a coating obtainable by the method of claim 1.
EP08002095A 2008-02-05 2008-02-05 Method for providing a patterned coating Withdrawn EP2087943A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP08002095A EP2087943A1 (en) 2008-02-05 2008-02-05 Method for providing a patterned coating

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP08002095A EP2087943A1 (en) 2008-02-05 2008-02-05 Method for providing a patterned coating

Publications (1)

Publication Number Publication Date
EP2087943A1 true EP2087943A1 (en) 2009-08-12

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EP08002095A Withdrawn EP2087943A1 (en) 2008-02-05 2008-02-05 Method for providing a patterned coating

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010055008A1 (en) * 2008-11-11 2010-05-20 Crown Packaging Technology, Inc. Magnetised coating effect
US20130089733A1 (en) * 2011-10-06 2013-04-11 GM Global Technology Operations LLC Structural panels stiffened by magnetically-assisted application of thick polymer coatings
CN103521410A (en) * 2013-10-14 2014-01-22 大连理工大学 Automatic printing method of three-dimensional pattern on vehicle body surface
WO2014108303A1 (en) * 2013-01-09 2014-07-17 Sicpa Holding Sa Optical effect layers showing a viewing angle dependent optical effect, processes and devices for their production, items carrying an optical effect layer, and uses thereof
WO2014108404A3 (en) * 2013-01-09 2014-12-04 Sicpa Holding Sa Optical effect layers showing a viewing angle dependent optical effect; processes and devices for their production; items carrying an optical effect layer; and uses thereof
WO2018054819A1 (en) * 2016-09-22 2018-03-29 Sicpa Holding Sa Apparatuses and processes for producing optical effect layers comprising oriented non-spherical magnetic or magnetizable pigment particles

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2006848A1 (en) * 1970-02-14 1971-09-02 Magnetfabrik Bonn GmbH, vormals Gewerkschaft Windhorst, 5300 Bonn Bad Godesberg, Weilburger Lackfabrik, J Grebe, 6290 Weilburg Magnetic loaded varnish for prodn of pat-terns
WO2007065998A1 (en) * 2005-12-08 2007-06-14 Pivaudran Techniques Et Innovations Method for producing an object from a magnetisable moulded synthetic material and object thus produced
WO2007107549A1 (en) * 2006-03-21 2007-09-27 Akzo Nobel Coatings International B.V. Method of applying a pattern to a substrate

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2006848A1 (en) * 1970-02-14 1971-09-02 Magnetfabrik Bonn GmbH, vormals Gewerkschaft Windhorst, 5300 Bonn Bad Godesberg, Weilburger Lackfabrik, J Grebe, 6290 Weilburg Magnetic loaded varnish for prodn of pat-terns
WO2007065998A1 (en) * 2005-12-08 2007-06-14 Pivaudran Techniques Et Innovations Method for producing an object from a magnetisable moulded synthetic material and object thus produced
WO2007107549A1 (en) * 2006-03-21 2007-09-27 Akzo Nobel Coatings International B.V. Method of applying a pattern to a substrate

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010055008A1 (en) * 2008-11-11 2010-05-20 Crown Packaging Technology, Inc. Magnetised coating effect
US20130089733A1 (en) * 2011-10-06 2013-04-11 GM Global Technology Operations LLC Structural panels stiffened by magnetically-assisted application of thick polymer coatings
CN104903009A (en) * 2013-01-09 2015-09-09 锡克拜控股有限公司 Optical effect layers showing a viewing angle dependent optical effect processes and devices for their production items carrying an optical effect layer and uses thereof
WO2014108303A1 (en) * 2013-01-09 2014-07-17 Sicpa Holding Sa Optical effect layers showing a viewing angle dependent optical effect, processes and devices for their production, items carrying an optical effect layer, and uses thereof
WO2014108404A3 (en) * 2013-01-09 2014-12-04 Sicpa Holding Sa Optical effect layers showing a viewing angle dependent optical effect; processes and devices for their production; items carrying an optical effect layer; and uses thereof
US9724956B2 (en) 2013-01-09 2017-08-08 Sicpa Holding Sa Optical effect layers showing a viewing angle dependent optical effect; processes and devices for their production; items carrying an optical effect layer; and uses thereof
AU2014204887B2 (en) * 2013-01-09 2017-08-24 Sicpa Holding Sa Optical effect layers showing a viewing angle dependent optical effect; processes and devices for their production; items carrying an optical effect layer; and uses thereof
AU2013372261B2 (en) * 2013-01-09 2017-08-24 Sicpa Holding Sa Optical effect layers showing a viewing angle dependent optical effect, processes and devices for their production, items carrying an optical effect layer, and uses thereof
US9849713B2 (en) 2013-01-09 2017-12-26 Sicpa Holding Sa Optical effect layers showing a viewing angle dependent optical effect, processes and devices for their production, items carrying an optical effect layer, and uses thereof
US10682877B2 (en) 2013-01-09 2020-06-16 Sicpa Holding Sa Optical effect layers showing a viewing angle dependent optical effect, processes and devices for their production, items carrying an optical effect layer, and uses thereof
CN103521410B (en) * 2013-10-14 2014-10-22 大连理工大学 Automatic printing method of three-dimensional pattern on vehicle body surface
CN103521410A (en) * 2013-10-14 2014-01-22 大连理工大学 Automatic printing method of three-dimensional pattern on vehicle body surface
WO2018054819A1 (en) * 2016-09-22 2018-03-29 Sicpa Holding Sa Apparatuses and processes for producing optical effect layers comprising oriented non-spherical magnetic or magnetizable pigment particles
JP2019536652A (en) * 2016-09-22 2019-12-19 シクパ ホルディング ソシエテ アノニムＳｉｃｐａ Ｈｏｌｄｉｎｇ Ｓａ Apparatus and method for producing an optical effect layer comprising oriented non-spherical magnetic pigment particles or magnetizable pigment particles
US10737526B2 (en) 2016-09-22 2020-08-11 Sicpa Holding Sa Apparatuses and processes for producing optical effect layers comprising oriented non-spherical magnetic or magnetizable pigment particles

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