EP0849379A2 - Amélioration d'un procédé de finissage de surface pour des parties constituantes esthéthiques des moyens de transport - Google Patents

Amélioration d'un procédé de finissage de surface pour des parties constituantes esthéthiques des moyens de transport Download PDF

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Publication number
EP0849379A2
EP0849379A2 EP97119529A EP97119529A EP0849379A2 EP 0849379 A2 EP0849379 A2 EP 0849379A2 EP 97119529 A EP97119529 A EP 97119529A EP 97119529 A EP97119529 A EP 97119529A EP 0849379 A2 EP0849379 A2 EP 0849379A2
Authority
EP
European Patent Office
Prior art keywords
layer
corrosion
phases
finish
phase
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.)
Granted
Application number
EP97119529A
Other languages
German (de)
English (en)
Other versions
EP0849379A3 (fr
EP0849379B1 (fr
Inventor
Giorgio De Meis
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.)
Sapa Autoplastics SpA
Original Assignee
Plastal ZCP SpA
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 Plastal ZCP SpA filed Critical Plastal ZCP SpA
Publication of EP0849379A2 publication Critical patent/EP0849379A2/fr
Publication of EP0849379A3 publication Critical patent/EP0849379A3/fr
Application granted granted Critical
Publication of EP0849379B1 publication Critical patent/EP0849379B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • CCHEMISTRY; METALLURGY
    • C25ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25DPROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D5/00Electroplating characterised by the process; Pretreatment or after-treatment of workpieces
    • C25D5/10Electroplating with more than one layer of the same or of different metals
    • C25D5/12Electroplating with more than one layer of the same or of different metals at least one layer being of nickel or chromium
    • CCHEMISTRY; METALLURGY
    • C25ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25DPROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D5/00Electroplating characterised by the process; Pretreatment or after-treatment of workpieces
    • C25D5/48After-treatment of electroplated surfaces
    • CCHEMISTRY; METALLURGY
    • C25ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25DPROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D5/00Electroplating characterised by the process; Pretreatment or after-treatment of workpieces
    • C25D5/54Electroplating of non-metallic surfaces
    • C25D5/56Electroplating of non-metallic surfaces of plastics
    • CCHEMISTRY; METALLURGY
    • C25ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25DPROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D5/00Electroplating characterised by the process; Pretreatment or after-treatment of workpieces
    • C25D5/627Electroplating characterised by the visual appearance of the layers, e.g. colour, brightness or mat appearance

Definitions

  • the present invention refers to the methods that are used to apply a "metallized" finish to component parts made of plastic material, which are adapted to be mounted on outer decorative surfaces of transportation means, incl. not only motor vehicles such as cars, but also motor cycles, boats and aircraft.
  • Plastic material are largely known to be by now widely used to manufacture component parts of the above cited kind, even those that are quite complicated in their shape or design, which require a land of surface finish which must not only be particularly attractive, especially in connection with their use in top-of-range models, but must also be capable of ensuring long-term durability by appropriately withstanding the most critical and severe ambient conditions (high temperatures, marine ambient, corrosion due to salt and/or sand strewn over the road surface in winter to limit the effects of ice formation).
  • polymer alloys such as for instance an ABS-PC alloy (Acrylonitrile-Butadiene-Styrene and Polycarbonates).
  • Such component parts are caused to undergo a finishing process consisting in applying layers of metal materials that are capable of conferring a special combination of colour and brightness (ie. the so-called "metallization") to the decorative surfaces thereof.
  • metal materials that are capable of conferring a special combination of colour and brightness (ie. the so-called "metallization"
  • gun barrel that calls for the application by galvanic methods, onto the surfaces of such a kind of parts, of at least a layer of metal material to impart said "metallization" effect, the need arising then to protect said layer by means of successive layers of a clear lacquer in view of conferring long-term resistance to the afore mentioned most severe ambient conditions.
  • a largely known surface finish process for radiator grilles of motor vehicles includes following sequence of phases that are carried out after the phase(a) in which the part is injection-moulded:
  • the invention has essentially the advantage of enhancing the uniformity of the subsequent deposit of the layer that brings about the "metallization" of the part (ie. the 60%-40% nickel-tin alloy) when said deposit is made on an industrial scale.
  • the present invention has the advantage of reducing production rejects and scraps, ensures that the chromatic, ie. decorative effects of the "metallization” do not undergo any alteration or change in the course of time, and finally improves the durability characteristics of the so finished parts.
  • This particular advantage of an improved durability is demonstrated by the fact that automotive grilles produced by the Applicant in accordance with the present invention unfailingly pass the 72-hour Cass Test, the Florida Test and the test in the humidostatic chamber.
  • the method according to the present invention has been described with reference to a "gun-barrel metallization" finishing application, it will be readily appreciated that further applications may be developed by those skilled in the art without departing from the scope of the present invention.
  • the "metallizing" layer may be constituted by other metals, such as for instance ruthenium. It will be also appreciated that the invention is valid and applies regardless of the manner in which the traditional phases of the finishing process are carried out, eg. the final painting or lacquering phases (i) and (j) may be carried out with an electrophoretic method instead of an electrostatic one.

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Engineering & Computer Science (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Laminated Bodies (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
  • Coating By Spraying Or Casting (AREA)
  • Road Repair (AREA)
  • Other Surface Treatments For Metallic Materials (AREA)
  • Electroplating Methods And Accessories (AREA)
  • Coating With Molten Metal (AREA)
EP97119529A 1996-12-20 1997-11-07 Amélioration d'un procédé de finissage de surface pour des parties constituantes esthéthiques des moyens de transport Expired - Lifetime EP0849379B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITPN960067 1996-12-20
IT96PN000067A IT1289401B1 (it) 1996-12-20 1996-12-20 Procedimento migliorato per la finitura superficiale di componenti estetici di mezzi di trasporto

Publications (3)

Publication Number Publication Date
EP0849379A2 true EP0849379A2 (fr) 1998-06-24
EP0849379A3 EP0849379A3 (fr) 1998-08-12
EP0849379B1 EP0849379B1 (fr) 2002-02-20

Family

ID=11395203

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97119529A Expired - Lifetime EP0849379B1 (fr) 1996-12-20 1997-11-07 Amélioration d'un procédé de finissage de surface pour des parties constituantes esthéthiques des moyens de transport

Country Status (4)

Country Link
EP (1) EP0849379B1 (fr)
DE (1) DE69710567T2 (fr)
ES (1) ES2172728T3 (fr)
IT (1) IT1289401B1 (fr)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4429020A (en) * 1980-05-22 1984-01-31 Daniel Luch Metal-polymer composite and method of making said composite

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5483638A (en) * 1977-12-16 1979-07-03 Kawasaki Heavy Ind Ltd Chromium plating method for cylinder of cast aluminum alloy

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4429020A (en) * 1980-05-22 1984-01-31 Daniel Luch Metal-polymer composite and method of making said composite

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
DATABASE WPI Section Ch, Week 7933 Derwent Publications Ltd., London, GB; Class M11, AN 79-60411B XP002068651 & JP 54 083 638 A (KAWASAKI HEAVY IND LTD) *

Also Published As

Publication number Publication date
DE69710567D1 (de) 2002-03-28
EP0849379A3 (fr) 1998-08-12
ES2172728T3 (es) 2002-10-01
DE69710567T2 (de) 2002-07-11
IT1289401B1 (it) 1998-10-02
EP0849379B1 (fr) 2002-02-20
ITPN960067A1 (it) 1998-06-20

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