EP1745163B1 - Method for producing electroplated plastic sanitary articles - Google Patents

Method for producing electroplated plastic sanitary articles Download PDF

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Publication number
EP1745163B1
EP1745163B1 EP06743085A EP06743085A EP1745163B1 EP 1745163 B1 EP1745163 B1 EP 1745163B1 EP 06743085 A EP06743085 A EP 06743085A EP 06743085 A EP06743085 A EP 06743085A EP 1745163 B1 EP1745163 B1 EP 1745163B1
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EP
European Patent Office
Prior art keywords
component
sanitary article
sanitary
water
shower
Prior art date
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Not-in-force
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EP06743085A
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German (de)
French (fr)
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EP1745163A1 (en
Inventor
Andreas Fath
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Hansgrohe SE
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Hansgrohe SE
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    • 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
    • C25D5/02Electroplating of selected surface areas
    • C25D5/022Electroplating of selected surface areas using masking means
    • CCHEMISTRY; METALLURGY
    • C23COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23CCOATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C18/00Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating
    • C23C18/16Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating by reduction or substitution, e.g. electroless plating
    • C23C18/1601Process or apparatus
    • C23C18/1603Process or apparatus coating on selected surface areas
    • C23C18/1605Process or apparatus coating on selected surface areas by masking
    • CCHEMISTRY; METALLURGY
    • C23COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23CCOATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C18/00Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating
    • C23C18/16Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating by reduction or substitution, e.g. electroless plating
    • C23C18/1601Process or apparatus
    • C23C18/1633Process of electroless plating
    • C23C18/1646Characteristics of the product obtained
    • C23C18/165Multilayered product
    • C23C18/1653Two or more layers with at least one layer obtained by electroless plating and one layer obtained by electroplating
    • CCHEMISTRY; METALLURGY
    • C25ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25DPROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D17/00Constructional parts, or assemblies thereof, of cells for electrolytic coating
    • C25D17/06Suspending or supporting devices for articles to be coated
    • 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
    • C25D7/00Electroplating characterised by the article coated
    • C25D7/04Tubes; Rings; Hollow bodies
    • CCHEMISTRY; METALLURGY
    • C23COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23CCOATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C18/00Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating
    • C23C18/16Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating by reduction or substitution, e.g. electroless plating
    • C23C18/18Pretreatment of the material to be coated
    • C23C18/1803Pretreatment of the material to be coated of metallic material surfaces or of a non-specific material surfaces
    • C23C18/1824Pretreatment of the material to be coated of metallic material surfaces or of a non-specific material surfaces by chemical pretreatment
    • CCHEMISTRY; METALLURGY
    • C23COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23CCOATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C18/00Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating
    • C23C18/16Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating by reduction or substitution, e.g. electroless plating
    • C23C18/18Pretreatment of the material to be coated
    • C23C18/20Pretreatment of the material to be coated of organic surfaces, e.g. resins
    • C23C18/2006Pretreatment of the material to be coated of organic surfaces, e.g. resins by other methods than those of C23C18/22 - C23C18/30
    • C23C18/2046Pretreatment of the material to be coated of organic surfaces, e.g. resins by other methods than those of C23C18/22 - C23C18/30 by chemical pretreatment
    • C23C18/2073Multistep pretreatment
    • C23C18/2086Multistep pretreatment with use of organic or inorganic compounds other than metals, first
    • CCHEMISTRY; METALLURGY
    • C23COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23CCOATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C18/00Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating
    • C23C18/16Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating by reduction or substitution, e.g. electroless plating
    • C23C18/18Pretreatment of the material to be coated
    • C23C18/20Pretreatment of the material to be coated of organic surfaces, e.g. resins
    • C23C18/28Sensitising or activating
    • C23C18/285Sensitising or activating with tin based compound or composition
    • CCHEMISTRY; METALLURGY
    • C23COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23CCOATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C18/00Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating
    • C23C18/16Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating by reduction or substitution, e.g. electroless plating
    • C23C18/18Pretreatment of the material to be coated
    • C23C18/20Pretreatment of the material to be coated of organic surfaces, e.g. resins
    • C23C18/28Sensitising or activating
    • C23C18/30Activating or accelerating or sensitising with palladium or other noble metal
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00Metal working
    • Y10T29/49Method of mechanical manufacture
    • Y10T29/49428Gas and water specific plumbing component making
    • Y10T29/49432Nozzle making
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00Metal working
    • Y10T29/49Method of mechanical manufacture
    • Y10T29/49428Gas and water specific plumbing component making
    • Y10T29/49432Nozzle making
    • Y10T29/49433Sprayer

Definitions

  • the invention relates in the first place to a method for producing sanitary articles made of plastic with galvanically metallized surfaces, a component which can be used in this method and sanitary articles provided with this component.
  • Galvanized plastics d. H. Plastic materials with metallic coatings have become indispensable in the manufacture of sanitary items.
  • the preferred plastic material here is, for example, ABS (acrylonitrile-butadiene-styrene copolymer), which is especially galvanized with chromium as the outermost surface layer.
  • ABS acrylonitrile-butadiene-styrene copolymer
  • the production of galvanized plastic sanitary items is rational and inexpensive to carry out in particular because of unnecessary grinding and polishing effort, as it is necessary for metal bodies. Added to this are the favorable design options resulting from the use of plastic injection technology and a significant reduction in weight compared with sanitary articles with metal bodies.
  • the said galvanized plastic sanitary articles are produced in process steps which are basically known to the person skilled in the art.
  • a pretreatment process is usually necessary in order to render the plastic surface electrically conductive in order to ensure adequate adhesion of the metal layers applied galvanically with current (ie with external current source) to the plastic.
  • all surface areas of the treated article are rendered electrically conductive. This is mainly due to the fact that the treatment solutions used for the electroless pre-treatment have free access to all external and internal surfaces of the article. In the case of sanitary articles, this means that even the water-bearing areas with their corresponding surfaces at least partially become electrically conductive during this pretreatment.
  • the WO 01/31094 A1 proposes to use in the metal coating sealing elements, for example in the form of spherical elements to prevent metal deposition at certain points of the article to be coated, in particular provided there holes or depressions.
  • the sealing elements are intended to prevent the electrolyte used for metal deposition from coming into contact with the corresponding points of the article.
  • WO 03/096859 A2 already proposed to apply a covering or protective layer on at least a part of the surfaces of the sanitary object to the water-carrying areas of the sanitary object in the galvanic metallization with external Disconnect power source from current flow.
  • the corresponding layers consist of a lacquer which is applied in a suitable manner, in particular by printing in the so-called tampon printing process.
  • the preferred tampon printing process is a comparatively sophisticated technique that can only be mastered by qualified personnel.
  • the cover / protective layer must be applied to sanitary objects to relatively complicated geometries, which in turn requires qualified personnel and a lot of time.
  • the paints used for the corresponding layers are complicated to use and sometimes physiologically questionable, so that appropriate precautions must be taken in production.
  • the object of the invention is to make it possible for plastic plumbing articles to have a targeted galvanic metallization (with current flow) only in certain surface areas.
  • the deposition of metals in the water-bearing areas of the sanitary object should be reliably prevented.
  • the process should be as seamless as possible in existing production processes and not affect the quality of the metallization on the decorative surfaces of the sanitary object.
  • the sanitary object before the galvanic metallization with an external power source at least one electrically non-conductive component, which at least partially the water-bearing areas of the sanitary object in the galvanic metallization with the external power source , preferably completely, decoupled from the current flow.
  • said component is designed as a separate component which can be connected to the sanitary article or can interact with it in a comparable manner.
  • the component is in particular designed so that it is reversibly connectable to the sanitary object, d. H. after fulfilling its function in a simple manner can be removed from the sanitary object again.
  • the separate component with the sanitary object is preferably plugged together, in particular in this plugged. This makes it possible to realize the aforementioned reversible connectivity with the sanitary object in a simple manner.
  • the separate component is formed either in the manner of a sleeve. In this way, it can interact with the corresponding water-bearing parts of a sanitary object, which usually have circular cross-sectional areas.
  • the necessary seal between the sleeve-like component and the sanitary object is z. B. achieved by the outer surface of the component or by a section or projection provided there together with the inner surface of the article or there provided (circumferential) notch or groove.
  • at least one sealing element is located in the aforementioned sleeve-like components on the outer circumference of the component, wherein these sealing elements are, in particular, conventional sealing rings.
  • the separate component is preferably at least partially introduced into the sanitary object. This can be realized, for example, by placing the component in a recess or recess provided on the sanitary object, in particular in the manner of a (preferably circumferential) groove.
  • the separate component is annular, which may also be in particular conventional sealing rings here.
  • recesses or openings are provided in the invention in the described component, which can serve different purposes.
  • such recesses or openings serve to receive holding elements for the component, ie. H. those holding elements that are necessary or useful for the function of the component in the galvanic metallization.
  • sanitary articles can be galvanically metallized.
  • Preferred sanitary items are sanitary outlet devices such as fittings, showers, hand showers and the like.
  • these are sanitary items, during their production, the water-carrying parts or areas are injected with the same.
  • the sanitary article which is galvanically metallized according to the invention is a shower or a shower head, preferably a hand shower.
  • the described component is provided at the so-called water inlet and / or at the so-called water outlet.
  • the exact arrangement of the component on the sanitary object will also be explained later in connection with the drawings.
  • the component is preferably formed as a sleeve-like component and then provided on or in the water inlet.
  • the component can also be designed as a sealing ring and then be provided on or preferably in the water inlet.
  • the component is preferably designed as a sealing ring and then provided at the water outlet, or the component is preferably designed as a sleeve-like component and then provided at the water outlet.
  • the component described in connection with the invention is preferably made of plastic.
  • plastic In particular, here PVDF (Polyvinylydenfluorid) or PTFE (polytetrafluoroethylene) come as a plastic used.
  • the sanitary object itself in particular the shower or shower head, made of plastic, wherein preferably a so-called thermoplastic material is used.
  • the sanitary article is made of ABS in these cases.
  • the invention also includes sanitary articles made of plastic, in particular showers or shower heads, which are connected to at least one separate component, which at least partially decouples the water-carrying areas of the sanitary object from the current flow during a galvanic metallization with an external current source.
  • the component can be reversibly connectable to the sanitary object.
  • the component with the sanitary object can be plugged together or inserted into this.
  • sleeve-like components or the described annular components wherein recesses or openings may be provided in the component.
  • the component is, as mentioned, preferably made of plastic, in particular PVDF or PTFE.
  • the sanitary article according to the invention is preferably a hand shower.
  • the sanitary article is preferably made of a thermoplastic material, in particular of ABS.
  • the invention also comprises a goods carrier in the form of a galvanic frame, which is provided according to the invention with at least one of the described sleeve-shaped components.
  • these components can be applied to the goods carrier, ie the electroplating rack, before the sanitary articles to be electroplated are applied.
  • the components can be fastened via the recesses and openings preferably provided there to corresponding holding elements of the goods carrier. In this way, then the sanitary objects directly to the components on the goods carrier attached, for example, inserted into the corresponding openings of a hand shower and also contacted. This facilitates the work processes in the production.
  • the components can then optionally remain on the goods carrier and also be used for the galvanization of other sanitary items.
  • the invention has a number of advantages over the initially described prior art.
  • the decoupling of the water-bearing areas or parts of the sanitary object in the invention is carried out with a component which is either formed on the object or in a simple manner connectable to this.
  • in the invention must not be handled with chemical substances such as paints or the like, so that no corresponding regulations for occupational safety must be complied with.
  • the components described can optionally be removed again in a simple manner from the sanitary object, which is either not possible at all or only with great effort in the application of covering or protective layers. With appropriate design, the components can even be reused after their removal from the sanitary object.
  • a holder of the sanitary object in the galvanic metallization can be provided over the component (see the optionally existing recesses or openings).
  • the invention can be integrated in a special way in processes in which the plastic objects are made conductive by the so-called direct metallization process (see later).
  • the method according to the invention is preferably configured such that the surfaces of the sanitary object are pretreated with external current source prior to the galvanic metallization. This is preferably true for all surfaces.
  • pretreatment steps can be applied, as they are known from the prior art.
  • the pretreatment preferably comprises at least one degreasing or pickling step, in which case in particular a pretreatment with an oxidizing agent should be mentioned.
  • oxidizing agents can be used here, for example potassium permanganate solution, it being possible for different agents to be selected depending on the plastic material used for the sanitary object.
  • Preferred oxidizing agents are acids, in which case a treatment with chromic acid-containing solutions (with or without sulfuric acid) is to be emphasized.
  • the pretreatment with chromic acid-containing solutions is particularly suitable for plastic articles made of ABS.
  • the pretreatment in the inventive method preferably comprises at least one activation step, which usually follows the degreasing or pickling step.
  • the activation can take place in several steps, with activation in two steps being preferred.
  • Activation is carried out according to the invention, in particular a so-called electroless chemical metallization.
  • metals are deposited without external power source of suitable solutions.
  • various procedures are known, which are separated from each other or in combination with each other.
  • solutions for chemical metallization can be used which contain tin or palladium.
  • the solutions preferably contain tin ions, while the palladium may be contained in the solutions in ionic form or else in metallic form (preferably colloidal).
  • the chemical metallization can be carried out with the aid of solutions containing cobalt ions. These cobalt ions are then converted to cobalt sulfide in a second step.
  • Direct metallization means that after pretreatment and activation, an electrolytic layer (under current flow) can be built directly. This reduces the number of production steps and simplifies the process as a whole. Especially when using such direct metallizations method of the invention brings with its component according to the invention additional advantages, since then a total metallization of the water-bearing parts of a sanitary object can be reliably prevented and the process is further simplified on the whole.
  • layers, and in particular outermost cover layers of at least one noble metal or of binary, ternary or quaternary alloys of such metals are applied.
  • noble metals are gold and the metals of the group of the so-called platinum metals.
  • a layer sequence is applied in which this layer sequence terminates with an outermost covering layer of chromium.
  • the advantages of a chromium plating as the outermost cover layer also need not be emphasized and are known in the art. In these embodiments, those are still preferred in which layers of nickel and / or copper are located below the covering layer of chromium.
  • the method according to the invention can be configured in such a way that after the galvanic metallization with external current source, a post-treatment takes place.
  • This aftertreatment preferably relates to all surfaces of the sanitary article.
  • the aftertreatment consists, in particular, of a so-called stripping, in which a conductive layer (metal layers), which is optionally applied by electroless chemical deposition, is removed again.
  • This stripping is preferably carried out by treating the corresponding surfaces with an oxidizing agent, in particular an oxidizing acid.
  • the oxidizing agent may be, in particular, nitric acid or solutions which are, in particular, persulfate or hydrogen peroxide. Stripping preferably removes all metal layers that have not been current deposited.
  • the water-bearing parts of the sanitary object are completely metal-free, so that the disadvantages listed above can not occur.
  • Fig. 1 shows the component 1 in a sectional view.
  • This component is made of PVDF in a conventional manner known to those skilled in the art.
  • the component 1 is designed in the manner of a sleeve with a circular cross-sectional area and has a first section 2, to which a second section 3 immediately adjoins.
  • Section 3 has a circumferential on the outer circumference of the component 1 projection 4, which together with another Projection 5 forms a groove-like recess 6.
  • a sealing element 7 is inserted in the form of a sealing ring, which projects beyond the projections 4 and 5 and thus provides a corresponding sealing surface for the component 1 to the outside.
  • the interaction of the sealing element 7 with the corresponding surfaces of a sanitary object will be described in the following, in connection with Fig. 3 , explained in more detail.
  • section 2 of the component 1 there are two, mutually opposite openings 8 a and 8 b, which can accommodate at least one holding element for the component 1. Again this will be related to the Fig. 3 explained in more detail.
  • the walls of the component 1 are reduced. As a result, the introduction and removal of the component from the corresponding openings of the sanitary article is facilitated by the increased elasticity of the corresponding regions.
  • the component 1 is a separate component. It can be found in the Fig. 3 manner shown cooperate with a sanitary object and take over its function in the galvanic metallization.
  • Fig. 2 shows a further component 1 'in sectional view. Since its structure is similar to the structure of the component 1, reference can be made to the description of the component 1. For reasons of clarity, the same reference numerals have also been used to a large extent.
  • the component 1 ' is also configured in the manner of a sleeve with a circular cross-sectional area.
  • the component 1 ' has a circumferential projection 4 on the outer circumference, which can cooperate sealingly with a corresponding recess on a sanitary object.
  • the sealing function is in spite of dispensing with an additional sealing element 7 against the execution of the component according to Fig. 1 guaranteed. This simplifies the construction and production of the component 1 'relative to the component 1.
  • the component 1 has two, mutually opposite openings 8a and 8b, which can accommodate at least one holding element for the component 1. This can also be explained in the description in connection with the Fig. 3 to get expelled.
  • the wall thickness is also reduced in order to facilitate an increased elasticity for the introduction and removal of the component from the corresponding openings of the sanitary object.
  • Fig. 3 shows a sanitary object according to the invention in the form of a hand shower 11, which in the usual manner known in the art by injection molding, preferably made of ABS. It can be clearly seen the merging water-bearing areas 12a (water chamber) and 12b (water supply channel) with their associated (inner) surfaces. These water-bearing areas are in the functional state of the sanitary object flows through the water / drinking water, in the direction of the water inlet area (water inlet 13) to the water outlet area (water outlet 14).
  • the section 2 of the component 1 with its openings 8a and 8b is according to Fig. 3 out of the water inlet 13 and on the one hand supports the decoupling of the current flow and on the other hand, via the openings 8a and 8b, provides a possibility for holding the component 1 or the hand shower 11 in the galvanic coating itself.
  • This holder is accomplished, for example, by passing one or two support rods through the two opposite openings 8a and 8b, wherein the support rods are preferably provided on a product support for the galvanic coating of the hand shower 11.
  • other support rods in the region of the water outlet 14 can act on the hand shower 11.
  • the hand shower 11, preferably at the water inlet 13 and the water outlet 14, only to be contacted, and the galvanic deposition can begin.
  • Fig. 3 also shows that other constructions of a component for the inventive method are possible.
  • a corresponding Seal be provided in a groove attached there. Then the sealing ring takes over the function of the current decoupling in this groove.
  • Comparable versions can also be realized at the water outlet 14.
  • a hand shower, as in Fig. 3 is shown, made of ABS, z. B. Novodur P2MC (Bayer AG, Germany) or Ronvalin TP55 (BASF AG, Germany) is prior to the entire galvanic treatment with a component, as in Fig. 1 is shown provided.
  • a component as in Fig. 1 is shown provided.
  • the hand shower is fixed on a galvanic frame.

Abstract

In a method for producing plastic sanitary articles having surfaces metallized by electroplating, the sanitary article has at least one electrically nonconductive component, before said article is metallized by electroplating using an external current source. This component at least partially decouples the water-bearing regions of the sanitary article from the current flow during metallization by electroplating using the external current source. The component is preferably a separate component which can be reversibly connected to the sanitary article. The invention also includes the component for decoupling the current itself, and a sanitary article which is provided with the component.

Description

Die Erfindung betrifft in erster Linie ein Verfahren zur Herstellung von Sanitärgegenständen aus Kunststoff mit galvanisch metallisierten Oberflächen, ein bei diesem Verfahren verwendbares Bauteil sowie mit diesem Bauteil versehene Sanitärgegenstände.The invention relates in the first place to a method for producing sanitary articles made of plastic with galvanically metallized surfaces, a component which can be used in this method and sanitary articles provided with this component.

Galvanisierte Kunststoffe, d. h. Kunststoffmaterialien mit metallischen Überzügen, sind bei der Herstellung von Sanitärgegenständen nicht mehr wegzudenken. Als bevorzugtes Kunststoffmaterial ist hier beispielsweise ABS (Acrylnitril-Butadien-Styrol-Copolymer) zu nennen, das insbesondere mit Chrom als äußerster Deckschicht galvanisiert ist. Die Herstellung von galvanisierten Kunststoff-Sanitärgegenständen ist insbesondere wegen nicht notwendigem Schleif- und Polieraufwand, wie er bei Metallkörpern notwendig ist, rationell und kostengünstig durchzuführen. Hinzu kommen die durch den Einsatz der Kunststoff-Spritztechnik günstigen Gestaltungsmöglichkeiten sowie eine erhebliche Gewichtsreduzierung gegenüber Sanitärgegenständen mit Metallkörpern.Galvanized plastics, d. H. Plastic materials with metallic coatings have become indispensable in the manufacture of sanitary items. The preferred plastic material here is, for example, ABS (acrylonitrile-butadiene-styrene copolymer), which is especially galvanized with chromium as the outermost surface layer. The production of galvanized plastic sanitary items is rational and inexpensive to carry out in particular because of unnecessary grinding and polishing effort, as it is necessary for metal bodies. Added to this are the favorable design options resulting from the use of plastic injection technology and a significant reduction in weight compared with sanitary articles with metal bodies.

Die genannten galvanisierten Kunststoff-Sanitärgegenstände werden in Verfahrensschritten hergestellt, die dem Fachmann grundsätzlich bekannt sind. So ist üblicherweise ein Vorbehandlungsverfahren notwendig, um die Kunststoffoberfläche elektrisch leitfähig zu machen, damit eine ausreichende Haftung der galvanisch mit Strom (d. h. mit äußerer Stromquelle) aufgebrachten Metallschichten auf dem Kunststoff gewährleistet ist. Mit der üblicherweise stromlos durchgeführten Vorbehandlung werden im Normalfall alle Oberflächenbereiche des behandelten Gegenstands gleichmäßig elektrisch leitfähig gemacht. Dies liegt hauptsächlich daran, dass die für die stromlose Vorbehandlung verwendeten Behandlungslösungen zu allen äußeren und inneren Oberflächen des Gegenstands freien Zugang haben. Im Falle von Sanitärgegenständen bedeutet dies, dass auch die wasserführenden Bereiche mit ihren entsprechenden Oberflächen bei dieser Vorbehandlung mindestens teilweise elektrisch leitfähig werden. Dies wiederum hat zur Folge, dass auch die bei der sich anschließenden galvanischen Metallisierung mit äußerer Stromquelle abgeschiedenen Metalle, wie Chrom, auf den entsprechenden Oberflächen der wasserführenden Bereiche zu finden sind. In diesem Zusammenhang spricht man auch davon, dass die bei der stromlosen Vorbehandlung und bei der galvanischen Metallisierung mit äußerer Stromquelle verwendeten Metalle in die wasserführenden Bereiche des Sanitärgegenstands "einstreuen". Je nach verwendetem Metall kann diese Einstreuung unterschiedlich weit bzw. tief gehen.The said galvanized plastic sanitary articles are produced in process steps which are basically known to the person skilled in the art. Thus, a pretreatment process is usually necessary in order to render the plastic surface electrically conductive in order to ensure adequate adhesion of the metal layers applied galvanically with current (ie with external current source) to the plastic. Normally, with the normally currentless pretreatment, all surface areas of the treated article are rendered electrically conductive. This is mainly due to the fact that the treatment solutions used for the electroless pre-treatment have free access to all external and internal surfaces of the article. In the case of sanitary articles, this means that even the water-bearing areas with their corresponding surfaces at least partially become electrically conductive during this pretreatment. This in turn has the consequence that also in the subsequent galvanic metallization deposited with external power source metals, such as chromium, can be found on the corresponding surfaces of the water-bearing areas. In this context, it is also said that the metals used in the electroless pre-treatment and in the galvanic metallization with external power source "litter" in the water-bearing areas of the sanitary object. Depending on the metal used, this scattering can go differently far or deep.

Bei derartigen Sanitärgegenständen mit Metallabscheidungen in den wasserführenden Bereichen besteht grundsätzlich die Gefahr, dass die entsprechenden Metalle in das Wasser übertreten oder die entsprechenden Metallschichten sich sogar ablösen. Dies gilt insbesondere dann, wenn die Sanitärgegenstände in geographischen Gebieten eingesetzt werden, in denen nur ein vergleichsweise aggressives Trinkwasser zur Verfügung steht, beispielsweise Trinkwasser mit hohem Sulfatgehalt, hohem Sauerstoffgehalt und/oder vergleichsweise niedrigem pH-Wert von < 7. Es können Funktionsstörungen dadurch auftreten, dass die abgeschiedenen Metallschichten, z. B. Kupfer- und/oder Nickelschichten, unterwandert werden und sich flitterförmig ablösen. Bei vielen Sanitärgegenständen, beispielsweise Handbrausen mit eingespritztem Wasserführungskanal sowie in der Wasserverteilungskammer im Brausekopf, führt dies zum Verstopfen der Strahlscheibe. Bei Mischarmaturen mit entsprechenden Konstruktionsmerkmalen können die Perlatoren usw. verstopfen. Darüber hinaus besteht bei allen Sanitärgegenständen die Möglichkeit, dass das die wasserführenden Bereiche durchströmende Wasser/Trinkwasser durch chemische Auflösung der abgeschiedenen Metalle mit den verschiedensten Metallen kontaminiert wird.In the case of such sanitary articles with metal deposits in the water-bearing areas, there is in principle the danger that the corresponding metals will migrate into the water or the corresponding metal layers even become detached. This applies in particular if the sanitary objects are used in geographical areas in which only a comparatively aggressive drinking water is available, for example drinking water with a high sulphate content, high oxygen content and / or comparatively low pH of <7. Dysfunction can thereby occur in that the deposited metal layers, e.g. B. copper and / or nickel layers, are infiltrated and peel off in a bauble. In many sanitary items, such as hand showers with injected water channel and in the water distribution chamber in the shower head, this leads to clogging of the jet disk. In mixing valves with corresponding design features, the perlators etc. can become clogged. In addition, there is the possibility that all the sanitary objects flowing through the water-bearing areas Water / drinking water is contaminated by chemical dissolution of the deposited metals with a variety of metals.

Zumindest in den wasserführenden Bereichen sollte also bei der galvanischen Metallisierung mit äußerer Stromquelle kein metallischer Überzug abgeschieden werden. Dieses Problem ist auch aus anderen technischen Gebieten bekannt, bei denen elektrisch nicht leitende Gegenstände örtlich begrenzt mit Metallen überzogen werden sollen. So beschreibt die deutsche Patentschrift DE-C3-1801819 ein Verfahren, bei dem Gegenstände (dort Bedienungsknöpfe für Rundfunkgeräte) nur teilweise galvanisch beschichtet werden sollen. Dies wird dort dadurch erreicht, dass auf der Oberfläche des Gegenstandes schmale Einkerbungen/Nuten eingebracht werden. Dadurch soll die Leitfähigkeit für bestimmte Oberflächenbereiche so herabgesetzt werden, dass in diesen Bereichen bei galvanischer Metallisierung mit äußerer Stromquelle kein Metall abgeschieden wird. Bereits die Tatsache, dass nach diesem Patent die Tiefe und der Einschnittwinkel der Einkerbung auf die angewandte Stromdichte abgestimmt sein muss, macht das beschriebene Verfahren nicht ausreichend produktionssicher. Außerdem können nicht auf jeder Oberfläche die erforderlichen Einkerbungen/Nuten angebracht werden, da diese nachträglich nicht mehr entfernt werden können.At least in the water-bearing areas so no metallic coating should be deposited in the galvanic metallization with external power source. This problem is also known from other technical fields, in which electrically non-conductive objects are to be coated locally with metals. This is how the German patent specification describes DE-C3-1801819 a method in which objects (there control buttons for radios) are only partially galvanic coated. This is achieved there by the fact that on the surface of the article narrow indentations / grooves are introduced. Thereby, the conductivity for certain surface areas should be reduced so that no metal is deposited in these areas in galvanic metallization with external power source. Even the fact that according to this patent, the depth and the incision angle of the notch must be matched to the applied current density, makes the described method not sufficiently reliable production. In addition, the required notches / grooves can not be mounted on each surface, as these can not be removed later.

Die WO 01/31094 A1 schlägt vor, bei der Metallbeschichtung Abdichtelemente einzusetzen, beispielsweise in Form von kugelförmigen Elementen, um eine Metallabscheidung an bestimmten Stellen der zu beschichtenden Artikel, insbesondere in dort vorgesehenen Bohrungen oder Vertiefungen zu verhindern. Gemäß dieser Druckschrift sollen die Abdichtelemente verhindern, dass der zur Metallabscheidung verwendete Elektrolyt mit den entsprechenden Stellen des Artikels in Berührung kommt.The WO 01/31094 A1 proposes to use in the metal coating sealing elements, for example in the form of spherical elements to prevent metal deposition at certain points of the article to be coated, in particular provided there holes or depressions. According to this document, the sealing elements are intended to prevent the electrolyte used for metal deposition from coming into contact with the corresponding points of the article.

Zur Lösung dieses Problems auf dem Gebiet der Sanitärtechnik wurde von der Anmelderin selbst in der WO 03/096859 A2 bereits vorgeschlagen, eine Abdeckschicht oder Schutzschicht auf zumindest einen Teil der Oberflächen des Sanitärgegenstands aufzubringen, um die wasserführenden Bereiche des Sanitärgegenstands bei der galvanischen Metallisierung mit äußerer Stromquelle vom Stromfluss abzukoppeln. Die entsprechenden Schichten bestehen dabei aus einem Lack, der in geeigneter Weise, insbesondere durch Aufdrucken im sogenannten Tampon-Druckverfahren, aufgebracht wird.To solve this problem in the field of sanitary engineering was by the applicant itself in the WO 03/096859 A2 already proposed to apply a covering or protective layer on at least a part of the surfaces of the sanitary object to the water-carrying areas of the sanitary object in the galvanic metallization with external Disconnect power source from current flow. The corresponding layers consist of a lacquer which is applied in a suitable manner, in particular by printing in the so-called tampon printing process.

Diese Vorgehensweise kann jedoch in der praktischen Anwendung zu Schwierigkeiten führen. Zum einen handelt es sich bei dem bevorzugten Tampon-Druckverfahren um eine vergleichsweise anspruchsvolle Technik, die nur von qualifiziertem Personal beherrscht werden kann. Weiter muss die Abdeck-/Schutzschicht bei Sanitärgegenständen auf vergleichsweise komplizierte Geometrien aufgebracht werden, was wiederum qualifiziertes Personal und einen hohen Zeitaufwand erfordert. Schließlich sind die für die entsprechenden Schichten verwendeten Lacke kompliziert in der Anwendung und teilweise physiologisch bedenklich, so dass in der Produktion entsprechende Vorkehrungen getroffen werden müssen.However, this approach can lead to difficulties in practical use. On the one hand, the preferred tampon printing process is a comparatively sophisticated technique that can only be mastered by qualified personnel. Furthermore, the cover / protective layer must be applied to sanitary objects to relatively complicated geometries, which in turn requires qualified personnel and a lot of time. Finally, the paints used for the corresponding layers are complicated to use and sometimes physiologically questionable, so that appropriate precautions must be taken in production.

Alle die genannten Schwierigkeiten haben in der Praxis dazu geführt, dass das Problem von verschiedenen Herstellern von vorneherein umgangen wird, beispielsweise dadurch, dass nach einer galvanischen Beschichtung nachträglich ein separates Schlauchteil in den wasserführenden Teil des Sanitärgegenstands, beispielsweise der Brause, eingelegt wird. Dadurch fließt das Wasser durch diesen zusätzlich eingelegten Schlauch und kommt mit den inneren Wandungen des Sanitärgegenstands nicht in Berührung. Es versteht sich jedoch, dass durch diese Vorgehensweise ein weiterer Verfahrensschritt in die Herstellung des entsprechenden Sanitärgegenstands eingebaut werden muss.All the difficulties mentioned have in practice meant that the problem is circumvented by different manufacturers from the outset, for example by the fact that after a galvanic coating subsequently a separate hose part in the water-bearing part of the sanitary object, such as the shower head is inserted. As a result, the water flows through this additionally inserted hose and does not come into contact with the inner walls of the sanitary object. It is understood, however, that by this procedure, a further process step must be incorporated into the production of the corresponding sanitary object.

Die Erfindung stellt sich dementsprechend die Aufgabe, bei Sanitärgegenständen aus Kunststoff eine gezielte galvanische Metallisierung (unter Stromfluss) nur in bestimmten Oberflächenbereichen zu ermöglichen. Insbesondere soll die Abscheidung von Metallen in den wasserführenden Bereichen des Sanitärgegenstands zuverlässig verhindert werden. Dabei soll das entsprechende Verfahren sich möglichst nahtlos in bestehende Produktionsprozesse einfügen lassen und die Qualität der Metallisierung auf den dekorativen Oberflächen des Sanitärgegenstands nicht beeinträchtigen.Accordingly, the object of the invention is to make it possible for plastic plumbing articles to have a targeted galvanic metallization (with current flow) only in certain surface areas. In particular, the deposition of metals in the water-bearing areas of the sanitary object should be reliably prevented. The process should be as seamless as possible in existing production processes and not affect the quality of the metallization on the decorative surfaces of the sanitary object.

Diese Aufgabe wird gelöst durch das Verfahren mit den Merkmalen des Anspruchs 1. Bevorzugte Ausführungsformen dieses Verfahrens sind in den abhängigen Ansprüchen 2 bis 15 dargestellt. Anspruch 16 beschreibt den mit dem Bauteil versehenen Sanitärgegenstand, wobei bevorzugte Ausführungen dieses Sanitärgegenstands Inhalt der abhängigen Ansprüche 17 bis 25 sind. Ein erfindungsgemäßer Warenträger für die Galvanik ist in den Ansprüchen 26 bis 29 offenbart. Der Wortlaut sämtlicher Ansprüche wird hiermit durch Bezugnahme zum Inhalt dieser Beschreibung gemacht.This object is achieved by the method with the features of claim 1. Preferred embodiments of this method are shown in the dependent claims 2 to 15. Claim 16 describes the sanitary article provided with the component, preferred embodiments of this sanitary article being content of the dependent claims 17 to 25. An inventive product carrier for electroplating is disclosed in claims 26 to 29. The wording of all claims is hereby incorporated by reference into the content of this specification.

Bei dem erfindungsgemäßen Verfahren zur Herstellung von Sanitärgegenständen aus Kunststoff mit galvanisch metallisierten Oberflächen weist der Sanitärgegenstand vor der galvanischen Metallisierung mit einer äußeren Stromquelle mindestens ein elektrisch nicht-leitendes Bauteil auf, das die wasserführenden Bereiche des Sanitärgegenstands bei der galvanischen Metallisierung mit der äußeren Stromquelle mindestens teilweise, vorzugsweise vollständig, vom Stromfluss abkoppelt.In the method according to the invention for the production of sanitary articles made of plastic with galvanically metallized surfaces, the sanitary object before the galvanic metallization with an external power source at least one electrically non-conductive component, which at least partially the water-bearing areas of the sanitary object in the galvanic metallization with the external power source , preferably completely, decoupled from the current flow.

Für die Abkopplung der wasserführenden Bereiche des Sanitärgegenstands wird also im Gegensatz zu der Ausführung in der WO 03/096859 ein Bauteil verwendet und keine Abdeck- oder Schutzschicht. Dies führt zu einigen entscheidenden Vorteilen, die im folgenden noch näher erläutert werden.For the decoupling of water-bearing areas of the sanitary object is thus in contrast to the execution in the WO 03/096859 a component used and no covering or protective layer. This leads to some decisive advantages, which will be explained in more detail below.

Erfindungsgemäß ist das genannte Bauteil als separates Bauteil ausgebildet, das mit dem Sanitärgegenstand verbunden werden kann oder in vergleichbarer Weise mit ihm zusammenwirken kann. Das Bauteil ist insbesondere so ausgebildet, dass es mit dem Sanitärgegenstand reversibel verbindbar ist, d. h. nach Erfüllung seiner Funktion in einfacher Weise vom Sanitärgegenstand wieder entfernt werden kann.According to the invention, said component is designed as a separate component which can be connected to the sanitary article or can interact with it in a comparable manner. The component is in particular designed so that it is reversibly connectable to the sanitary object, d. H. after fulfilling its function in a simple manner can be removed from the sanitary object again.

Erfindungsgemäß ist das separate Bauteil mit dem Sanitärgegenstand vorzugsweise zusammensteckbar, insbesondere in diesen einsteckbar. Dadurch lässt sich in einfacher Weise die erwähnte reversible Verbindbarkeit mit dem Sanitärgegenstand realisieren.According to the invention, the separate component with the sanitary object is preferably plugged together, in particular in this plugged. This makes it possible to realize the aforementioned reversible connectivity with the sanitary object in a simple manner.

Bei der Erfindung ist das separate Bauteil entweder nach Art einer Hülse ausgebildet. Auf diese Weise kann es mit den entsprechenden wasserführenden Teilen eines Sanitärgegenstands, die üblicherweise kreisförmige Querschnittsflächen besitzen, zusammenwirken. Die notwendige Abdichtung zwischen dem hülsenartigen Bauteil und dem Sanitärgegenstand wird dabei z. B. durch die Außenfläche des Bauteils oder auch durch einen dort vorgesehenen Abschnitt oder Vorsprung zusammen mit der Innenfläche des Gegenstands oder eine dort vorgesehene (umlaufende) Einkerbung oder Nut erreicht. Um einen dichtenden Formschluss zwischen dem Bauteil und dem Sanitärgegenstand zu erreichen, befindet sich bei den genannten hülsenartigen Bauteilen am Außenumfang des Bauteils vorzugsweise mindestens ein Dichtelement, wobei es sich bei diesen Dichtelementen insbesondere um übliche Dichtringe handelt.In the invention, the separate component is formed either in the manner of a sleeve. In this way, it can interact with the corresponding water-bearing parts of a sanitary object, which usually have circular cross-sectional areas. The necessary seal between the sleeve-like component and the sanitary object is z. B. achieved by the outer surface of the component or by a section or projection provided there together with the inner surface of the article or there provided (circumferential) notch or groove. In order to achieve a sealing positive connection between the component and the sanitary object, preferably at least one sealing element is located in the aforementioned sleeve-like components on the outer circumference of the component, wherein these sealing elements are, in particular, conventional sealing rings.

Bei einer anderen Ausgestaltung der Erfindung ist das separate Bauteil vorzugsweise in den Sanitärgegenstand mindestens teilweise einbringbar. Dies lässt sich beispielsweise dadurch realisieren, dass das Bauteil in eine am Sanitärgegenstand vorgesehene Vertiefung oder Ausnehmung, insbesondere nach Art einer (vorzugsweise umlaufenden) Nut, eingelegt ist. In diesen Fällen ist das separate Bauteil ringförmig ausgebildet, wobei es sich auch hier insbesondere um übliche Dichtringe handeln kann.In another embodiment of the invention, the separate component is preferably at least partially introduced into the sanitary object. This can be realized, for example, by placing the component in a recess or recess provided on the sanitary object, in particular in the manner of a (preferably circumferential) groove. In these cases, the separate component is annular, which may also be in particular conventional sealing rings here.

In Weiterbildung sind bei der Erfindung in dem beschriebenen Bauteil Ausnehmungen oder Öffnungen vorgesehen, die unterschiedlichen Zwecken dienen können. Insbesondere dienen solche Ausnehmungen oder Öffnungen der Aufnahme von Halteelementen für das Bauteil, d. h. solchen Halteelementen, die für die Funktion des Bauteils bei der galvanischen Metallisierung erforderlich oder nützlich sind.In a further development recesses or openings are provided in the invention in the described component, which can serve different purposes. In particular, such recesses or openings serve to receive holding elements for the component, ie. H. those holding elements that are necessary or useful for the function of the component in the galvanic metallization.

Bei dem erfindungsgemäßen Verfahren können grundsätzlich verschiedene Sanitärgegenstände galvanisch metallisiert werden. Bevorzugte Sanitärgegenstände sind sanitäre Auslaufvorrichtungen wie Armaturen, Brausen, Handbrausen und dergleichen. Vorzugsweise handelt es sich hier um Sanitärgegenstände, bei deren Herstellung die wasserführenden Teile oder Bereiche gleich mit eingespritzt werden.In the method according to the invention, fundamentally different sanitary articles can be galvanically metallized. Preferred sanitary items are sanitary outlet devices such as fittings, showers, hand showers and the like. Preferably, these are sanitary items, during their production, the water-carrying parts or areas are injected with the same.

Insbesondere handelt es sich bei dem Sanitärgegenstand, der erfindungsgemäß galvanisch metallisiert wird, um eine Brause oder um einen Brausenkopf, vorzugsweise um eine Handbrause.In particular, the sanitary article which is galvanically metallized according to the invention is a shower or a shower head, preferably a hand shower.

Bei einem solchen Sanitärgegenstand ist das beschriebene Bauteil am sogenannten Wassereintritt und/oder am sogenannten Wasseraustritt vorgesehen. Die genaue Anordnung des Bauteils am Sanitärgegenstand wird auch später im Zusammenhang mit den Zeichnungen noch näher erläutert.In such a sanitary object, the described component is provided at the so-called water inlet and / or at the so-called water outlet. The exact arrangement of the component on the sanitary object will also be explained later in connection with the drawings.

Bei den zuletzt genannten Ausführungen ist das Bauteil vorzugsweise als hülsenartiges Bauteil ausgebildet und dann am oder im Wassereintritt vorgesehen. In ebenfalls bevorzugter Weise kann das Bauteil auch als Dichtring ausgebildet sein und dann am oder vorzugsweise im Wassereintritt vorgesehen sein.In the latter embodiments, the component is preferably formed as a sleeve-like component and then provided on or in the water inlet. In a likewise preferred manner, the component can also be designed as a sealing ring and then be provided on or preferably in the water inlet.

In vergleichbarer Weise ist bei solchen Ausführungen vorzugsweise das Bauteil als Dichtring ausgebildet und dann am Wasseraustritt vorgesehen, oder das Bauteil ist vorzugsweise als hülsenartiges Bauteil ausgebildet und dann am Wasseraustritt vorgesehen.In a comparable manner, in such embodiments, the component is preferably designed as a sealing ring and then provided at the water outlet, or the component is preferably designed as a sleeve-like component and then provided at the water outlet.

Das im Zusammenhang mit der Erfindung beschriebene Bauteil ist vorzugsweise aus Kunststoff gefertigt. Insbesondere kann hier PVDF (Polyvinylydenfluorid) oder PTFE (Polytetrafluorethylen) als Kunststoff zum Einsatz kommen.The component described in connection with the invention is preferably made of plastic. In particular, here PVDF (Polyvinylydenfluorid) or PTFE (polytetrafluoroethylene) come as a plastic used.

Bei der Erfindung ist der Sanitärgegenstand selbst, insbesondere die Brause oder der Brausekopf, aus Kunststoff gefertigt, wobei vorzugsweise ein sogenannter thermoplastischer Kunststoff zum Einsatz kommt. Insbesondere ist der Sanitärgegenstand in diesen Fällen aus ABS gefertigt.In the invention, the sanitary object itself, in particular the shower or shower head, made of plastic, wherein preferably a so-called thermoplastic material is used. In particular, the sanitary article is made of ABS in these cases.

Schließlich umfasst die Erfindung auch Sanitärgegenstände aus Kunststoff, insbesondere Brausen oder Brauseköpfe, die mit mindestens einem separaten Bauteil verbunden sind, das die wasserführenden Bereiche des Sanitärgegenstands bei einer galvanischen Metallisierung mit äußerer Stromquelle mindestens teilweise vom Stromfluss abkoppelt.Finally, the invention also includes sanitary articles made of plastic, in particular showers or shower heads, which are connected to at least one separate component, which at least partially decouples the water-carrying areas of the sanitary object from the current flow during a galvanic metallization with an external current source.

Bezüglich der detaillierten Ausgestaltung der erfindungsgemäßen Sanitärgegenstände kann auf die obige Beschreibung im Zusammenhang mit dem erfindungsgemäßen Verfahren Bezug genommen werden. Die entsprechenden Ausführungen sollen hiermit ausdrücklich auch für die Beschreibung des erfindungsgemäßen Sanitärgegenstandes gelten.With regard to the detailed configuration of the sanitary articles according to the invention, reference may be made to the above description in connection with the method according to the invention. The corresponding statements are hereby expressly also valid for the description of the sanitary article according to the invention.

Bei den Ausführungen, wie sie bereits dargestellt wurden, kann das Bauteil mit dem Sanitärgegenstand reversibel verbindbar sein. Hier wurde ebenfalls bereits dargelegt, dass dann vorzugsweise das Bauteil mit dem Sanitärgegenstand zusammensteckbar oder in diesen einsteckbar ist. Als konstruktive Alternativen sind hier die genannten hülsenartigen Bauteile bzw. die geschilderten ringförmigen Bauteile zu nennen, wobei Ausnehmungen oder Öffnungen im Bauteil vorgesehen sein können. Das Bauteil ist, wie erwähnt, vorzugsweise aus Kunststoff, insbesondere aus PVDF oder PTFE, gefertigt.In the embodiments as they have already been presented, the component can be reversibly connectable to the sanitary object. Here it has also been stated that then preferably the component with the sanitary object can be plugged together or inserted into this. As a constructive alternatives here are mentioned sleeve-like components or the described annular components, wherein recesses or openings may be provided in the component. The component is, as mentioned, preferably made of plastic, in particular PVDF or PTFE.

Bei dem erfindungsgemäßen Sanitärgegenstand handelt es sich vorzugsweise um eine Handbrause. Der Sanitärgegenstand ist vorzugsweise aus einem thermoplastischen Kunststoff, insbesondere aus ABS, gefertigt.The sanitary article according to the invention is preferably a hand shower. The sanitary article is preferably made of a thermoplastic material, in particular of ABS.

Schließlich umfasst die Erfindung noch einen Warenträger in Form eines Galvanikgestells, der erfindungsgemäß mit mindestens einem der beschriebenen hülsenförmigen Bauteile versehen ist. Wie später noch erläutert werden wird, lassen sich diese Bauteile bereits vor dem Aufbringen der zu galvanisierenden Sanitärgegenstände auf den Warenträger, d. h. das Galvanikgestell, aufbringen. Insbesondere lassen sich dabei die Bauteile über die dort vorzugsweise vorgesehenen Ausnehmungen und Öffnungen an entsprechenden Halteelementen des Warenträgers befestigen. Auf diese Weise können dann die Sanitärgegenstände direkt an den Bauteilen auf dem Warenträger befestigt, beispielsweise in die entsprechenden Öffnungen einer Handbrause eingesteckt und zusätzlich kontaktiert werden. Dies erleichtert die Arbeitsabläufe in der Produktion. Die Bauteile können dann gegebenenfalls am Warenträger verbleiben und auch für die Galvanisierung weiterer Sanitärgegenstände verwendet werden.Finally, the invention also comprises a goods carrier in the form of a galvanic frame, which is provided according to the invention with at least one of the described sleeve-shaped components. As will be explained later, these components can be applied to the goods carrier, ie the electroplating rack, before the sanitary articles to be electroplated are applied. In particular, the components can be fastened via the recesses and openings preferably provided there to corresponding holding elements of the goods carrier. In this way, then the sanitary objects directly to the components on the goods carrier attached, for example, inserted into the corresponding openings of a hand shower and also contacted. This facilitates the work processes in the production. The components can then optionally remain on the goods carrier and also be used for the galvanization of other sanitary items.

Die Erfindung besitzt gegenüber dem eingangs geschilderten Stand der Technik eine ganze Reihe von Vorteilen.The invention has a number of advantages over the initially described prior art.

So erfolgt die Abkopplung der wasserführenden Bereiche oder Teile des Sanitärgegenstands bei der Erfindung mit einem Bauteil, das entweder an den Gegenstand angeformt oder auf einfache Weise mit diesem verbindbar ist. Damit entfällt das nachträgliche Aufbringen einer Abdeck- oder Schutzschicht, die, wie eingangs erwähnt, vergleichsweise kompliziert und zeitaufwendig ist. Außerdem muss bei der Erfindung nicht mit chemischen Substanzen wie Lacken oder dergleichen umgegangen werden, so dass keine entsprechenden Vorschriften zur Arbeitssicherheit eingehalten werden müssen. Schließlich lassen sich bei der Erfindung die beschriebenen Bauteile gegebenenfalls in einfacher Weise wieder vom Sanitärgegenstand entfernen, was bei der Aufbringung von Abdeck- oder Schutzschichten entweder gar nicht oder nur mit großem Aufwand möglich ist. Bei entsprechender Ausführung lassen sich die Bauteile nach ihrer Entfernung vom Sanitärgegenstand sogar wiederverwenden. Schließlich lassen sich bei der Erfindung in das Bauteil weitere Funktionen integrieren, beispielsweise kann über das Bauteil eine Halterung des Sanitärgegenstand bei der galvanischen Metallisierung vorgesehen sein (siehe die gegebenenfalls vorhandenen Ausnehmungen oder Öffnungen). Darüber hinaus lässt sich die Erfindung in besonderer Weise in Verfahren integrieren, bei dem die Kunststoffgegenstände nach dem sogenannten Verfahren der Direktmetallisierung leitfähig gemacht werden (siehe später).Thus, the decoupling of the water-bearing areas or parts of the sanitary object in the invention is carried out with a component which is either formed on the object or in a simple manner connectable to this. This eliminates the subsequent application of a cover or protective layer, which, as mentioned above, is relatively complicated and time consuming. In addition, in the invention must not be handled with chemical substances such as paints or the like, so that no corresponding regulations for occupational safety must be complied with. Finally, in the case of the invention, the components described can optionally be removed again in a simple manner from the sanitary object, which is either not possible at all or only with great effort in the application of covering or protective layers. With appropriate design, the components can even be reused after their removal from the sanitary object. Finally, in the invention, further functions can be integrated into the component, for example a holder of the sanitary object in the galvanic metallization can be provided over the component (see the optionally existing recesses or openings). In addition, the invention can be integrated in a special way in processes in which the plastic objects are made conductive by the so-called direct metallization process (see later).

All dies macht die Erfindung gegenüber den geschilderten Ausführungen im Stand der Technik überlegen.All this makes the invention superior to the described embodiments in the prior art.

Bevor nun im einzelnen Bauteile und ein erfindungsgemäßer Sanitärgegenstand beschrieben wird, soll noch kurz auf eine übliche Verfahrensführung bei der metallischen Galvanisierung von Sanitärgegenständen eingegangen werden. Diese lediglich beispielhafteBefore describing components and a sanitary article according to the invention in detail, a brief discussion will be given on a common procedure for the metallic galvanization of sanitary articles. These only exemplary

Beschreibung soll zum besseren Verständnis des erfindungsgemäßen Verfahrens dienen.Description is intended to better understand the process of the invention.

In Weiterbildung ist das erfindungsgemäße Verfahren vorzugsweise so ausgestaltet, dass die Oberflächen des Sanitärgegenstands vor der galvanischen Metallisierung mit äußerer Stromquelle vorbehandelt werden. Dies gilt vorzugsweise für alle Oberflächen. Hier können Vorbehandlungsschritte angewandt werden, wie sie aus dem Stand der Technik bekannt sind.In a further development, the method according to the invention is preferably configured such that the surfaces of the sanitary object are pretreated with external current source prior to the galvanic metallization. This is preferably true for all surfaces. Here pretreatment steps can be applied, as they are known from the prior art.

Vorzugsweise umfasst die Vorbehandlung mindestens einen Entfettungs- oder Beizschritt, wobei hier insbesondere eine Vorbehandlung mit einem oxidierend wirkenden Agens zu nennen ist. Grundsätzlich können hier die unterschiedlichsten oxidierenden Agenzien verwendet werden, beispielsweise Kaliumpermanganat-Lösung, wobei je nach verwendetem Kunststoffmaterial des Sanitärgegenstands unterschiedliche Agenzien ausgewählt sein können. Bevorzugte oxidierende Agenzien sind Säuren, wobei hier eine Behandlung mit Chromsäure-enthaltenden Lösungen (mit oder ohne Schwefelsäure) hervorzuheben ist. Die Vorbehandlung mit Chromsäure-haltigen Lösungen bietet sich insbesondere bei Kunststoffgegenständen aus ABS an.The pretreatment preferably comprises at least one degreasing or pickling step, in which case in particular a pretreatment with an oxidizing agent should be mentioned. In principle, a wide variety of oxidizing agents can be used here, for example potassium permanganate solution, it being possible for different agents to be selected depending on the plastic material used for the sanitary object. Preferred oxidizing agents are acids, in which case a treatment with chromic acid-containing solutions (with or without sulfuric acid) is to be emphasized. The pretreatment with chromic acid-containing solutions is particularly suitable for plastic articles made of ABS.

Weiter umfasst die Vorbehandlung bei den erfindungsgemäßen Verfahren vorzugsweise mindestens einen Aktivierungsschritt, der sich üblicherweise an den Entfettungs- oder Beizschritt anschließt. Die Aktivierung kann dabei in mehreren Schritten erfolgen, wobei eine Aktivierung in zwei Schritten bevorzugt ist.Further, the pretreatment in the inventive method preferably comprises at least one activation step, which usually follows the degreasing or pickling step. The activation can take place in several steps, with activation in two steps being preferred.

Als Aktivierung wird nach der Erfindung insbesondere eine sogenannte stromlose chemische Metallisierung durchgeführt. Dabei werden Metalle ohne äußere Stromquelle aus geeigneten Lösungen abgeschieden. Hierbei sind verschiedene Vorgehensweisen bekannt, die getrennt voneinander oder auch in Kombination miteinander angewendet werden können.Activation is carried out according to the invention, in particular a so-called electroless chemical metallization. In this case, metals are deposited without external power source of suitable solutions. Here, various procedures are known, which are separated from each other or in combination with each other.

Zum einen können Lösungen zur chemischen Metallisierung eingesetzt werden, die Zinn oder Palladium enthalten. Im Falle von Zinn enthalten die Lösungen vorzugsweise Zinnionen, während das Palladium in ionischer Form oder auch in metallischer Form (vorzugsweise kolloidal) in den Lösungen enthalten sein kann.On the one hand, solutions for chemical metallization can be used which contain tin or palladium. In the case of tin, the solutions preferably contain tin ions, while the palladium may be contained in the solutions in ionic form or else in metallic form (preferably colloidal).

Zum anderen kann die chemische Metallisierung mit Hilfe von Lösungen erfolgen, die Kobaltionen enthalten. Diese Kobaltionen werden dann in einem zweiten Schritt zu Kobaltsulfid umgesetzt.On the other hand, the chemical metallization can be carried out with the aid of solutions containing cobalt ions. These cobalt ions are then converted to cobalt sulfide in a second step.

In bestimmten Fällen, beispielsweise bei der chemischen Metallisierung mit Zinn oder Palladium, kann sich vorzugsweise eine weitere stromlose chemische Metallisierung anschließen. Für diese weitere Metallisierung können dann Kupferionen- und/oder vorzugsweise Nickelionen-haltige Lösungen eingesetzt werden.In certain cases, for example in the case of the chemical metallization with tin or palladium, preferably another electroless chemical metallization may follow. Copper ion and / or preferably nickel ion-containing solutions can then be used for this further metallization.

Auf die chemische Metallisierung kann verzichtet werden, wenn eine sogenannte Direktmetallisierung eingesetzt wird, um den Kunststoff leitfähig zu machen. Direktmetallisierung bedeutet, dass nach Vorbehandlung und Aktivierung direkt eine elektrolytische Schicht (unter Stromfluss) aufgebaut werden kann. Damit wird die Zahl der Produktionsschritte reduziert und das Verfahren insgesamt vereinfacht. Gerade bei Verwendung solcher Direktmetallisierungen bringt das erfindungsgemäße Verfahren mit seinem erfindungsgemäßen Bauteil zusätzliche Vorteile, da dann insgesamt eine Metallisierung der wasserführenden Teile eines Sanitärgegenstands zuverlässig verhindert werden kann und das Verfahren insgesamt noch weiter vereinfacht wird.On the chemical metallization can be omitted if a so-called direct metallization is used to make the plastic conductive. Direct metallization means that after pretreatment and activation, an electrolytic layer (under current flow) can be built directly. This reduces the number of production steps and simplifies the process as a whole. Especially when using such direct metallizations method of the invention brings with its component according to the invention additional advantages, since then a total metallization of the water-bearing parts of a sanitary object can be reliably prevented and the process is further simplified on the whole.

Bei bevorzugten Ausführungen des erfindungsgemäßen Verfahrens werden bei der galvanischen Metallisierung mit äußerer Stromquelle, die sich insbesondere an die oben genannten Vorbehandlungsschritte anschließt, vorzugsweise Schichten aus Nickel, Kupfer oder Chrom aufgebracht. Hierbei ist Chrom als bevorzugtes Metall zu nennen.In preferred embodiments of the method according to the invention in the galvanic metallization with external power source, which in particular follows the above pretreatment steps, preferably layers of nickel, copper or chromium applied. Here, chromium is to be mentioned as the preferred metal.

Weiter ist es bevorzugt, wenn bei der galvanischen Metallisierung mit äußerer Stromquelle Schichten, und dabei insbesondere äußerste Deckschichten, aus mindestens einem Edelmetall oder aus binären, ternären oder quaternären Legierungen solcher Metalle aufgebracht werden. Die Vorteile derartiger Metalle als Schichten, insbesondere Deckschichten liegen aufgrund ihrer chemischen Beständigkeit auf der Hand. Als bevorzugte Edelmetalle sind hier Gold und die Metalle der Gruppe der sogenannten Platinmetalle zu nennen.Furthermore, it is preferred if, during the galvanic metallization with an external current source, layers, and in particular outermost cover layers, of at least one noble metal or of binary, ternary or quaternary alloys of such metals are applied. The advantages of such metals as layers, in particular cover layers, are obvious because of their chemical resistance. Preferred precious metals here are gold and the metals of the group of the so-called platinum metals.

Erfindungsgemäß ist es weiter bevorzugt, wenn bei der galvanischen Metallisierung mit äußerer Stromquelle eine Schichtenfolge aufgebracht wird, bei der diese Schichtenfolge mit einer äußersten Deckschicht aus Chrom abschließt. Die Vorteile einer Verchromung als äußerster Deckschicht müssen ebenfalls nicht besonders hervorgehoben werden und sind dem Fachmann bekannt. Bei diesen Ausführungsformen sind noch solche bevorzugt, bei denen sich unterhalb der Deckschicht aus Chrom Schichten aus Nickel und/oder Kupfer befinden.According to the invention, it is further preferred if, during the galvanic metallization with external current source, a layer sequence is applied in which this layer sequence terminates with an outermost covering layer of chromium. The advantages of a chromium plating as the outermost cover layer also need not be emphasized and are known in the art. In these embodiments, those are still preferred in which layers of nickel and / or copper are located below the covering layer of chromium.

In Weiterbildung kann das erfindungsgemäße Verfahren so ausgestaltet sein, dass nach der galvanischen Metallisierung mit äußerer Stromquelle eine Nachbehandlung stattfindet. Diese Nachbehandlung betrifft vorzugsweise alle Oberflächen des Sanitärgegenstands. Die Nachbehandlung besteht insbesondere in einem sogenannten Strippen, bei dem eine gegebenenfalls durch stromlose chemische Abscheidung aufgebrachte Leitschicht (Metallschichten) wieder entfernt wird. Dieses Strippen erfolgt vorzugsweise durch eine Behandlung der entsprechenden Oberflächen mit einem oxidierenden Agens, insbesondere einer oxidierenden Säure. Dabei kann es sich bei dem oxidierenden Agens insbesondere um Salpetersäure oder um Lösungen handeln, die insbesondere Persulfat oder Wasserstoffperoxid enthalten. Durch das Strippen werden vorzugsweise alle Metallschichten entfernt, die nicht mit Strom abgeschieden wurden. Auf diese Weise werden die wasserführenden Teile des Sanitärgegenstands vollständig metallfrei, so dass die eingangs aufgeführten Nachteile nicht eintreten können. Es verbleiben lediglich Metallschichten auf denjenigen Oberflächen, insbesondere auf den dekorativen Oberflächen, bei denen dies akzeptiert werden kann und die sich bei Verwendung des Sanitärgegenstands nicht ablösen können, z. B. die Chromschichten der äußersten Deckschicht.In a further development, the method according to the invention can be configured in such a way that after the galvanic metallization with external current source, a post-treatment takes place. This aftertreatment preferably relates to all surfaces of the sanitary article. The aftertreatment consists, in particular, of a so-called stripping, in which a conductive layer (metal layers), which is optionally applied by electroless chemical deposition, is removed again. This stripping is preferably carried out by treating the corresponding surfaces with an oxidizing agent, in particular an oxidizing acid. In this case, the oxidizing agent may be, in particular, nitric acid or solutions which are, in particular, persulfate or hydrogen peroxide. Stripping preferably removes all metal layers that have not been current deposited. In this way, the water-bearing parts of the sanitary object are completely metal-free, so that the disadvantages listed above can not occur. There remain only metal layers on those surfaces, in particular on the decorative surfaces where this can be accepted and which can not be detached when using the sanitary object, eg. B. the chrome layers of the outermost cover layer.

Die beschriebenen Merkmale und weitere Merkmale der Erfindung ergeben sich aus der nachfolgenden Beschreibung von bevorzugten Ausführungsformen in Verbindung mit den Unteransprüchen und den Zeichnungen. Hierbei können die einzelnen Merkmale jeweils für sich oder zu mehreren in Kombination miteinander verwirklicht sein.The described features and further features of the invention will become apparent from the following description of preferred embodiments in conjunction with the subclaims and the drawings. In this case, the individual features can be implemented individually or in combination with each other.

In den Zeichnungen zeigen:

Fig. 1
die schematische Schnittansicht eines Bauteils, wie es bei dem erfin- dungsgemäßen Verfahren zum Einsatz kommt,
Fig. 2
die schematische Schnittansicht eines weiteren Bauteils, wie es bei dem erfindungsgemäßen Verfahren zum Einsatz kommt, und
Fig. 3
die schematische Schnittdarstellung eines erfindungsgemäßen Sani- tärgegenstands mit Bauteil.
In the drawings show:
Fig. 1
1 is a schematic sectional view of a component used in the method according to the invention;
Fig. 2
the schematic sectional view of another component, as used in the inventive method, and
Fig. 3
the schematic sectional view of a sanitary object according to the invention with component.

Fig. 1 zeigt das Bauteil 1 in Schnittansicht. Dieses Bauteil ist in üblicher, dem Fachmann bekannter Weise, aus PVDF hergestellt. Fig. 1 shows the component 1 in a sectional view. This component is made of PVDF in a conventional manner known to those skilled in the art.

Das Bauteil 1 ist nach Art einer Hülse mit kreisförmiger Querschnittsfläche ausgestaltet und besitzt einen ersten Abschnitt 2, an den sich unmittelbar ein zweiter Abschnitt 3 anschließt. Abschnitt 3 weist einen am Außenumfang des Bauteils 1 umlaufenden Vorsprung 4 auf, der zusammen mit einem weiteren Vorsprung 5 eine nutartige Ausnehmung 6 bildet. In diese Ausnehmung 6 ist ein Dichtelement 7 in Form eines Dichtrings eingelegt, der über die Vorsprünge 4 und 5 übersteht und somit für das Bauteil 1 eine entsprechende nach außen abdichtende Dichtfläche bereitstellt. Das Zusammenwirken des Dichtelements 7 mit den entsprechenden Flächen eines Sanitärgegenstands wird im folgenden, im Zusammenhang mit der Fig. 3, noch näher erläutert.The component 1 is designed in the manner of a sleeve with a circular cross-sectional area and has a first section 2, to which a second section 3 immediately adjoins. Section 3 has a circumferential on the outer circumference of the component 1 projection 4, which together with another Projection 5 forms a groove-like recess 6. In this recess 6, a sealing element 7 is inserted in the form of a sealing ring, which projects beyond the projections 4 and 5 and thus provides a corresponding sealing surface for the component 1 to the outside. The interaction of the sealing element 7 with the corresponding surfaces of a sanitary object will be described in the following, in connection with Fig. 3 , explained in more detail.

Im Abschnitt 2 des Bauteils 1 befinden sich zwei, einander gegenüberliegende Öffnungen 8a und 8b, die mindestens ein Halteelement für das Bauteil 1 aufnehmen können. Auch dies wird im Zusammenhang mit der Fig. 3 noch näher erläutert.In section 2 of the component 1 there are two, mutually opposite openings 8 a and 8 b, which can accommodate at least one holding element for the component 1. Again this will be related to the Fig. 3 explained in more detail.

An den Enden 9 des Abschnitts 2 und 10 des Abschnitts 3 sind die Wandungen des Bauteils 1 reduziert. Dadurch wird über die erhöhte Elastizität der entsprechenden Bereiche das Einbringen und Ausbringen des Bauteils aus den entsprechenden Öffnungen des Sanitärgegenstands erleichtert.At the ends 9 of section 2 and 10 of the section 3, the walls of the component 1 are reduced. As a result, the introduction and removal of the component from the corresponding openings of the sanitary article is facilitated by the increased elasticity of the corresponding regions.

Wie aus Fig. 1 hervorgeht, handelt es sich bei dem Bauteil 1 um ein separates Bauteil. Es kann in der in Fig. 3 dargestellten Weise mit einem Sanitärgegenstand zusammenwirken und seine Funktion bei der galvanischen Metallisierung übernehmen.How out Fig. 1 As can be seen, the component 1 is a separate component. It can be found in the Fig. 3 manner shown cooperate with a sanitary object and take over its function in the galvanic metallization.

Fig. 2 zeigt ein weiteres Bauteil 1' in Schnittansicht. Da dessen Aufbau mit dem Aufbau des Bauteils 1 ähnlich ist, kann auf die Beschreibung des Bauteils 1 Bezug genommen werden. Aus Gründen der Übersichtlichkeit wurden auch weitgehend die gleichen Bezugszeichen verwendet. Fig. 2 shows a further component 1 'in sectional view. Since its structure is similar to the structure of the component 1, reference can be made to the description of the component 1. For reasons of clarity, the same reference numerals have also been used to a large extent.

Das Bauteil 1' ist ebenfalls nach Art einer Hülse mit kreisförmiger Querschnittsfläche ausgestaltet. An seinem gemäß Fig. 2 unteren Ende 10 besitzt das Bauteil 1' einen am Außenumfang umlaufenden Vorsprung 4, der mit einer entsprechenden Ausnehmung an einem Sanitärgegenstand dichtend zusammenwirken kann. Die Dichtfunktion ist trotz Verzicht auf ein zusätzliches Dichtelement 7 gegenüber der Ausführung des Bauteils gemäß Fig. 1 gewährleistet. Dies vereinfacht die Konstruktion und Herstellung des Bauteils 1' gegenüber dem Bauteil 1.The component 1 'is also configured in the manner of a sleeve with a circular cross-sectional area. At his according to Fig. 2 lower end 10, the component 1 'has a circumferential projection 4 on the outer circumference, which can cooperate sealingly with a corresponding recess on a sanitary object. The sealing function is in spite of dispensing with an additional sealing element 7 against the execution of the component according to Fig. 1 guaranteed. This simplifies the construction and production of the component 1 'relative to the component 1.

Darüber hinaus weist auch das Bauteil 1' zwei, einander gegenüberliegende Öffnungen 8a und 8b auf, die mindestens ein Halteelement für das Bauteil 1 aufnehmen können. Hierzu kann ebenfalls auf die Beschreibung im Zusammenhang mit der Fig. 3 verwiesen werden.In addition, the component 1 'has two, mutually opposite openings 8a and 8b, which can accommodate at least one holding element for the component 1. This can also be explained in the description in connection with the Fig. 3 to get expelled.

Am (gemäß Fig. 2 oberen) Ende 9 des Bauteils 1 ist die Wandungsstärke ebenfalls reduziert, um hier eine erhöhte Elastizität für das Einbringen und Ausbringen des Bauteils aus den entsprechenden Öffnungen des Sanitärgegenstands zu erleichtern.On (according to Fig. 2 upper) end 9 of the component 1, the wall thickness is also reduced in order to facilitate an increased elasticity for the introduction and removal of the component from the corresponding openings of the sanitary object.

Fig. 3 zeigt einen erfindungsgemäßen Sanitärgegenstand in Form einer Handbrause 11, der in üblicher, dem Fachmann bekannter Weise im Spritzgussverfahren, vorzugsweise aus ABS, hergestellt ist. Es sind deutlich die ineinander übergehenden wasserführenden Bereiche 12a (Wasserkammer) und 12b (Wasserführungskanal) mit ihren zugehörigen (inneren) Oberflächen zu erkennen. Diese wasserführenden Bereiche werden im Funktionszustand des Sanitärgegenstands vom Wasser/Trinkwasser durchströmt, und zwar in Richtung vom Wasserzulaufbereich (Wassereintritt 13) zum Wasserauslaufbereich (Wasseraustritt 14). Fig. 3 shows a sanitary object according to the invention in the form of a hand shower 11, which in the usual manner known in the art by injection molding, preferably made of ABS. It can be clearly seen the merging water-bearing areas 12a (water chamber) and 12b (water supply channel) with their associated (inner) surfaces. These water-bearing areas are in the functional state of the sanitary object flows through the water / drinking water, in the direction of the water inlet area (water inlet 13) to the water outlet area (water outlet 14).

Wie bereits in der Beschreibung erläutert, soll bei der galvanischen Metallisierung eine Metallabscheidung in den wasserführenden Bereichen, d. h. auf den (inneren) Oberflächen dieser Bereiche, vermieden werden. Zu diesem Zweck ist gemäß Fig. 3 ein Bauteil 1 gemäß Fig. 1 in den Wassereintritt 13 eingebracht, im vorliegenden Fall eingesteckt. Dabei ist der Abschnitt 3 des Bauteils 1 gemäß Fig. 1 in den Wassereintritt 13 eingeführt, wobei das Dichtelement 7 zusammen mit dem Vorsprung 4 mit der Innenwandung des Wassereintritts 13 formschlüssig zusammenwirkt. Durch diese dichtende Verbindung wird bei der Galvanisierung ein Stromfluss in Richtung der wasserführenden Bereiche (12b, 12a) zuverlässig verhindert. Der Abschnitt 2 des Bauteils 1 mit seinen Öffnungen 8a und 8b steht gemäß Fig. 3 aus dem Wassereintritt 13 heraus und unterstützt zum einen die Abkopplung vom Stromfluss und stellt zum anderen über die Öffnungen 8a und 8b eine Möglichkeit zur Halterung des Bauteils 1 bzw. der Handbrause 11 bei der galvanischen Beschichtung selbst zur Verfügung.As already explained in the description, in the case of galvanic metallization, metal deposition in the water-conducting regions, ie on the (inner) surfaces of these regions, is to be avoided. For this purpose is according to Fig. 3 a component 1 according to Fig. 1 introduced into the water inlet 13, inserted in the present case. In this case, the section 3 of the component 1 according to Fig. 1 introduced into the water inlet 13, wherein the sealing element 7 cooperates positively with the inner wall of the water inlet 13 together with the projection 4. By means of this sealing connection, a flow of current in the direction of the water-conducting regions (12b, 12a) is reliably prevented during galvanization. The section 2 of the component 1 with its openings 8a and 8b is according to Fig. 3 out of the water inlet 13 and on the one hand supports the decoupling of the current flow and on the other hand, via the openings 8a and 8b, provides a possibility for holding the component 1 or the hand shower 11 in the galvanic coating itself.

Diese Halterung wird beispielsweise dadurch bewerkstelligt, dass man einen oder zwei Haltestäbe durch die beiden gegenüberliegenden Öffnungen 8a und 8b hindurchführt, wobei die Haltestäbe vorzugsweise an einem Warenträger für die galvanische Beschichtung der Handbrause 11 vorgesehen sind. In entsprechender Weise können andere Haltestäbe im Bereich des Wasseraustritts 14 an die Handbrause 11 angreifen. Dann muss die Handbrause 11, vorzugsweise am Wassereintritt 13 und am Wasseraustritt 14, nur noch kontaktiert werden, und die galvanische Abscheidung kann beginnen.This holder is accomplished, for example, by passing one or two support rods through the two opposite openings 8a and 8b, wherein the support rods are preferably provided on a product support for the galvanic coating of the hand shower 11. In a corresponding manner, other support rods in the region of the water outlet 14 can act on the hand shower 11. Then, the hand shower 11, preferably at the water inlet 13 and the water outlet 14, only to be contacted, and the galvanic deposition can begin.

Es versteht sich, dass in entsprechender Weise das Bauteil 1' gemäß Fig. 2 in die Handbrause 11 eingebracht werden kann.It is understood that in a corresponding manner, the component 1 'according to Fig. 2 can be introduced into the hand shower 11.

Im dargestellten Fall gemäß Fig. 3 ist nur am Wassereintritt 13 ein Bauteil 1 vorhanden. In diesen Fällen kann die Dauer der galvanischen Metallisierung unter Stromfluss anhand von Erfahrungswerten gesteuert werden, um zu gewährleisten, dass nur die äußeren (dekorativen) Oberflächen der Handbrause 11 mit Metall beschichtet werden und keine (unerwünschte) Beschichtung der wasserführenden Bereiche über den Wasseraustritt 14 erfolgt. Da die Metallschicht bei dieser Verfahrensführung, beginnend vom Wassereintritt 13 her, aufwächst, wird in diesen Fällen die galvanische Beschichtung einfach rechtzeitig abgebrochen.In the case shown in accordance with Fig. 3 is only at the water inlet 13 a component 1 available. In these cases, the duration of galvanic metallization under current flow can be controlled based on experience to ensure that only the outer (decorative) surfaces of the hand shower 11 are coated with metal and no (unwanted) coating of the water-bearing areas via the water outlet 14 takes place , Since the metal layer grows up in this procedure, starting from the water inlet 13 forth, in these cases, the galvanic coating is simply canceled in time.

Es ist jedoch ohne weiteres möglich, auch am Wasseraustritt 14 ein Bauteil 1 vorzusehen, das auch dort eine entsprechende Abkopplung der wasserführenden Bereiche vom Stromfluss gewährleistet. In solchen Fällen kann beispielsweise über den Vorsprung 15 des Wasseraustritts 14 ein entsprechendes Bauteil gesteckt sein.However, it is readily possible to provide a component 1 at the water outlet 14, which ensures there as well a corresponding decoupling of the water-carrying areas from the current flow. In such cases, for example, be placed over the projection 15 of the water outlet 14, a corresponding component.

Aus den Erläuterungen zu Fig. 3 ergibt sich auch, dass andere Konstruktionen eines Bauteils für das erfindungsgemäße Verfahren möglich sind. So kann beispielsweise in eine entsprechende Nut am Wassereintritt 13 ein entsprechender Dichtring in einer dort angebrachten Nut vorgesehen sein. Dann übernimmt der Dichtring in dieser Nut die Funktion der Stromabkopplung. Vergleichbare Ausführungen lassen sich auch am Wasseraustritt 14 realisieren.From the explanations to Fig. 3 also shows that other constructions of a component for the inventive method are possible. For example, in a corresponding groove on the water inlet 13 a corresponding Seal be provided in a groove attached there. Then the sealing ring takes over the function of the current decoupling in this groove. Comparable versions can also be realized at the water outlet 14.

Beispielexample

Zur weiteren Erläuterung des erfindungsgemäßen Verfahren wird im folgenden ein Beispiel für eine geeignete Verfahrensführung dargestellt. Es versteht sich von selbst, dass die Erfindung durch dieses Beispiel in keiner Weise beschränkt werden soll.For further explanation of the process according to the invention, an example of a suitable process procedure is shown below. It goes without saying that the invention should not be limited by this example in any way.

Eine Handbrause, wie sie in Fig. 3 dargestellt ist, aus ABS, z. B. Novodur P2MC (Bayer AG, Deutschland) oder Ronvalin TP55 (BASF AG, Deutschland) wird vor der gesamten galvanischen Behandlung mit einem Bauteil, wie es in Fig. 1 dargestellt ist, versehen. Dazu wird das Bauteil in der in Fig. 3 dargestellten Weise in den Wassereintritt der Handbrause eingesteckt. Mit Hilfe von Halteelementen wird dann die Handbrause auf einem Galvanikgestell fixiert. Dabei kann auch so vorgegangen werden, dass zunächst die Bauteile auf alle entsprechenden Halteelemente aufgesetzt werden und dann die Handbrausen mit den bereits auf dem Galvanikgestell befestigten Bauteilen zusammengesteckt werden.A hand shower, as in Fig. 3 is shown, made of ABS, z. B. Novodur P2MC (Bayer AG, Germany) or Ronvalin TP55 (BASF AG, Germany) is prior to the entire galvanic treatment with a component, as in Fig. 1 is shown provided. For this, the component in the in Fig. 3 manner shown inserted into the water inlet of the hand shower. With the help of retaining elements then the hand shower is fixed on a galvanic frame. In this case, it is also possible to proceed in such a way that first the components are placed on all corresponding holding elements and then the handheld showerheads are plugged together with the components already fastened to the electroplating frame.

Der so präparierte Brausekörper durchläuft, auf dem Galvanisiergestell fixiert, den gesamten Galvano-Prozess im Durchfahrprinzip. Dieser Galvano-Prozess kann beispielhaft wie folgt aussehen:

  1. 1. Beizen in 1.000 g/l CrO3, 55 g/l Cr III
    • 65 °C 10 min
      oder in 380 g/l CrO3, 380 g/l H2SO4, 20 g/l Cr III
    • 65 °C 10 min
      In beiden Fällen enthalten die Beizen etwas Fluortensid wie FT248 (Bayer AG) zur besseren Benetzung.
  2. 2. Reduzieren von Resten an 6-wertiger Chromsäure mit einer Lösung aus 10 g/l Hydroxylammoniumsulfat Raumtemperatur 1-2 min.
  3. 3. Vortauchen in verdünnter Salzsäurelösung
    1 Teil konzentrierter Salzsäure - 2 Teile Wasser Raumtemperatur 1 min.
  4. 4. Aktivieren in einer kolloidalen Sn/Pd-Lösung handelsüblicher Art wie Ultraplast-Aktivierung S41 (Fa. Enthone, Langenfeld)
    100 mg/l Pd, 5 g/l Sn II
    35 °C 5 min.
  5. 5. Beschleunigen in einer Oxalsäure-haltigen Lösung wie Ultraplast-Aktivierung S52 (Fa. Enthone, Langenfeld)
    50 g/l Oxalsäure, 55 °C, 5 min.
  6. 6. Chemisch Vernickeln mit handelsüblichen chemischen Nickel-Lösungen wie Ultraplast-Ni-S76 (Fa. Enthone, Langenfeld) 5 g/l Ni 30 g/l Natriumhypophosphit-1-hydrat
    pH ca. 9.0 37 °C 10 min
  7. 7. Dekapieren in 100 g/l H2SO4
    Raumtemperatur 1 min.
  8. 8. Vorvernickeln im Sulfamat-Nickelbad
    • 70 g/l Ni 40 g/l Borsäure
    • 10 g/l Chlorid 50 °C 2A/dm2
    • 5-10 min.
    Nach diesem Arbeitsschritt ist der selektive Mechanismus bereits sichtbar. Die äußeren Bereiche weisen eine Vornickelschicht auf, die Wasserkammer und die Innenwandung des Wasserführungskanals sind im Zustand der chemischen Vernicklung verblieben.
  9. 9. Dekapieren in 100 g/l H2SO4
    Raumtemperatur 1 min.
  10. 10. Glanzverkupfern in schwefelsauren Glanzkupferelektrolyten 45 g/l Cu, 100 g/l H2SO4
    • 40 mg/l Chlorid 3A/dm2
    • 30 min.
    Glanzbildnersystem wie beispielsweise Cuprorapid 1518 (Fa. Enthone, Langenfeld)
  11. 11. Dekapieren (oxidativ) Dekabunt SE (Fa. Enthone, Langenfeld) Raumtemperatur 1 min.
    (System aus Na-hydrogensulfat, Fluorid und Na-persulfat)
  12. 12. Glanzvernickeln (üblicher Watts-Ansatz aus Nickelsulfat, Nickelchlorid und Borsäure)
    • 70 g/l Ni, 15 g/l Chlorid, 40 g/l Borsäure
    • 60 °C, 4A/dm 2, 10 min
      handelsübliches Glanzbildner-System wie Elpelyt SF (Fa. Enthone, Langenfeld)
  13. 13. Cr-Aktivierung z. B. 10 g/l CrO3, 2 g/l Cr III
    • 50 mg/l H2SO4, 50 mg/l Fluorid
      Raumtemperatur 1 min.
      kann kathodisch unterstützt sein, ca. 30 mA/dm2
  14. 14. Glanzverchromen 350 g/l CrO3, 2 g/l Cr III
    1,4 g/l H2SO4; 0,6 g/l Fluorid
    43 °C 4 min.
  15. 15. Reduzieren von Resten an 6-wertiger Chromsäure mit einer Lösung aus 10 g/l Hydroxyl-Ammoniumsulfat
    Raumtemperatur 1-2 min.
  16. 16. Trocknen Umluft 70 °C 10 min.
    Es versteht sich, dass zwischen den einzelnen Arbeitsschritten ausreichende Spülvorgänge durchzuführen sind.
  17. 17. Strippen der Leitschicht im Wasserführungsbereich z. B. 2 Teile Wasser - 1 Teil Salpetersäure 53 %, Raumtemperatur, ca 60 sec., bis Reste der Leitschicht restlos entfernt sind. Es versteht sich, dass dieser Schritt auch zwischen Pos. 15 und 16 direkt in den Galvano-Automaten integriert werden kann.
The sprayed body, which has been prepared in this way, runs through the galvano process in the drive-through principle, fixed on the galvanizing stand. This galvano process can look like this:
  1. 1. Pickling in 1,000 g / l CrO 3 , 55 g / l Cr III
    • 65 ° C 10 min
      or in 380 g / l CrO 3 , 380 g / l H 2 SO 4 , 20 g / l Cr III
    • 65 ° C 10 min
      In both cases, the stains contain some fluorosurfactant such as FT248 (Bayer AG) for better wetting.
  2. 2. Reduce residues of hexavalent chromic acid with a solution of 10 g / l hydroxylammonium sulfate at room temperature for 1-2 min.
  3. 3. Pretreatment in dilute hydrochloric acid solution
    1 part concentrated hydrochloric acid - 2 parts water room temperature 1 min.
  4. 4. Activation in a commercially available colloidal Sn / Pd solution such as Ultraplast activation S41 (from Enthone, Langenfeld)
    100 mg / l Pd, 5 g / l Sn II
    35 ° C 5 min.
  5. 5. Accelerating in an oxalic acid-containing solution such as Ultraplast activation S52 (Enthone, Langenfeld)
    50 g / l oxalic acid, 55 ° C, 5 min.
  6. 6. Chemical nickel plating with commercially available chemical nickel solutions such as Ultraplast-Ni-S76 (from Enthone, Langenfeld) 5 g / l Ni 30 g / l sodium hypophosphite 1-hydrate
    pH ca. 9.0 37 ° C 10 min
  7. 7. Picking in 100 g / l H 2 SO 4
    Room temperature 1 min.
  8. 8. Pre-nickel in the sulfamate nickel bath
    • 70 g / l Ni 40 g / l boric acid
    • 10 g / l chloride 50 ° C 2A / dm 2
    • 5-10 min.
    After this step, the selective mechanism is already visible. The outer regions have a pre-nickel layer, the water chamber and the inner wall of the water guide channel remain in the state of chemical nickel plating.
  9. 9. Picking in 100 g / l H 2 SO 4
    Room temperature 1 min.
  10. 10. Bright copper in sulfuric acid copper electrolytes 45 g / l Cu, 100 g / l H 2 SO 4
    • 40 mg / l chloride 3A / dm 2
    • 30 min.
    Brightener system such as Cuprorapid 1518 (from Enthone, Langenfeld)
  11. 11. Picking (oxidative) Dekabunt SE (from Enthone, Langenfeld) room temperature 1 min.
    (System of Na-bisulfate, fluoride and Na-persulfate)
  12. 12. Bright nickel (usual Watts approach of nickel sulfate, nickel chloride and boric acid)
    • 70 g / l Ni, 15 g / l chloride, 40 g / l boric acid
    • 60 ° C, 4 A / d m 2, 10 min
      Commercially available brightener system such as Elpelyt SF (Enthone, Langenfeld)
  13. 13. Cr activation z. B. 10 g / l CrO 3 , 2 g / l Cr III
    • 50 mg / l H 2 SO 4 , 50 mg / l fluoride
      Room temperature 1 min.
      can be cathodically supported, approx. 30 mA / dm 2
  14. 14. Bright chrome plating 350 g / l CrO 3 , 2 g / l Cr III
    1.4 g / l H 2 SO 4 ; 0.6 g / l fluoride
    43 ° C 4 min.
  15. 15. Reduce residues of hexavalent chromic acid with a solution of 10 g / l of hydroxylammonium sulfate
    Room temperature 1-2 min.
  16. 16. Dry circulating air 70 ° C 10 min.
    It is understood that sufficient rinsing operations are to be performed between the individual steps.
  17. 17. stripping the conductive layer in the water guide z. B. 2 parts of water - 1 part of nitric acid 53%, room temperature, about 60 sec. Until residues of the conductive layer are completely removed. It It goes without saying that this step can also be integrated directly between pos. 15 and 16 in the galvano machine.

Das Verfahren kann vielfältig variiert werden, z. B.

  • a. Direktmetallisieren:
    • Ersatz von Schritt 4 durch eine kolloidale Sn/Pd-Lösung mit höherer Pd-Konzentration, z. B. 240 mg/l
    • Ersatz von Schritt 5 durch eine alkalische kupferhaltige Lösung zur Ausbildung von Pd/Cu-Clustern
    • Dann kann auf das chemische Vernickeln und das Vornickeln verzichtet werden. Es wird direkt verkupfert.
  • b. lonogene Aktivierung:
    • Die kolloidale Sn/Pd-Lösung kann durch eine Palladiumsulfat-, Chromsäure- und Schwefelsäure-enthaltende Lösung ersetzt werden. Der Beschleuniger enthält dann eine organische Bor-Wasserstoff-Verbindung und Natriumhypophosphit. Die Verfahrensschritte 2 und 3 entfallen. Die Chrom-Schwefelsäure als Beize zusätzlich ca. 10 mg/l Pd - gilt auch für das Direktmetallisieren.
  • c. Nur-Nickel-Verfahren:
    • Vornickeln (Pos. 8), Dekapieren (Pos. 9), Glanzverkupfern (Pos. 10) werden zu einem Arbeitsschritt in einem Sulfamat-Nickelbad zusammengefasst. Pos. 11 darf dann kein Persulfat enthalten. Es genügt eine H2SO4-Dekapierung.
  • d. Andere Deckschichten als Chrom:
    • Sicherlich ist Chrom die Standard-Oberfläche der Sanitärarmaturen. Die Deckschicht könnte aber auch aus Reingold, Hartgold,
      Platin, Palladium, Ruthenium usw. bestehen, solange die Deckschicht gegenüber dem Stripp-Medium resistent ist.
The process can be varied in many ways, for. B.
  • a. Direktmetallisieren:
    • Replacement of step 4 with a higher Pd concentration colloidal Sn / Pd solution, e.g. B. 240 mg / l
    • Replacement of Step 5 with an alkaline copper-containing solution to form Pd / Cu clusters
    • Then you can do without the chemical nickel plating and pre-nickeling. It is directly coppered.
  • b. Ionogenic activation:
    • The colloidal Sn / Pd solution can be replaced by a solution containing palladium sulfate, chromic acid and sulfuric acid. The accelerator then contains an organic boron-hydrogen compound and sodium hypophosphite. The process steps 2 and 3 are omitted. The chromium-sulfuric acid as a stain additionally about 10 mg / l Pd - also applies to direct metallization.
  • c. Only nickel process:
    • Pre-nickeling (Pos. 8), pickling (Pos. 9), bright copper plating (Pos. 10) are summarized to one step in a sulfamate nickel bath. Pos. 11 must not contain persulfate. It is sufficient H 2 SO 4 -Dekapierung.
  • d. Other cover layers as chromium:
    • Certainly chrome is the standard surface of sanitary fittings. The top layer could also be made of pure gold, hard gold,
      Platinum, palladium, ruthenium, etc., as long as the cover layer is resistant to the stripping medium.

Claims (29)

  1. Method for producing plastic sanitary articles having surfaces metallized by electroplating, wherein, before it is metallized by electroplating using an external current source, the sanitary article has at least one electrically nonconductive component which at least partially decouples the water-bearing regions of the sanitary article from the current flow during metallization by electroplating using the external current source, the component being a separate component which can be connected to the sanitary article and the component being a sleeve-like component, or the component being of an annular form.
  2. Method according to Claim 1, characterized in that the component can be reversibly connected to the sanitary article.
  3. Method according to Claim 1 or 2, characterized in that the component can be fitted together with the sanitary article, preferably inserted into the sanitary article.
  4. Method according to one of the preceding claims, characterized in that at least one sealing element which is arranged on the outer circumference of the component, in particular at least one sealing ring, is provided on the sleeve-like component.
  5. Method according to one of the preceding claims, characterized in that the component can be at least partially introduced into the sanitary article, preferably placed into a groove-like recess provided on the sanitary article.
  6. Method according to one of the preceding claims, characterized in that the annular component is a sealing ring.
  7. Method according to one of the preceding claims, characterized in that clearances or openings are provided in the component, in particular for holding retaining elements for the component.
  8. Method according to one of the preceding claims, characterized in that the sanitary article is what is known as a shower or what is known as a shower head, in particular a hand-held shower attachment.
  9. Method according to Claim 8, characterized in that the component is provided at what is known as the water inlet and/or at what is known as the water outlet of the shower or of the shower head.
  10. Method according to Claim 9, characterized in that the component is in the form of a sleeve-like component and is provided at or preferably in the water inlet.
  11. Method according to Claim 9, characterized in that the component is in the form of a sealing ring and is provided at or preferably in the water inlet.
  12. Method according to one of Claims 9 to 11, characterized in that the component is in the form of a sealing ring and is provided at the water outlet.
  13. Method according to one of Claims 9 to 11, characterized in that the component is in the form of a sleeve-like component and is provided at the water outlet.
  14. Method according to one of the preceding claims, characterized in that the component is made of plastic, preferably PVDF.
  15. Method according to one of the preceding claims, characterized in that the sanitary article, in particular the shower or the shower head, is made of a thermoplastic, in particular ABS.
  16. Plastic sanitary article (11), in particular shower or shower head, characterized in that it is connected to at least one separate component (1) which at least partially decouples the water-bearing regions of the sanitary article from the current flow during metallization by electroplating using an external current source, the component being a sleeve-like component or the component being of an annular form.
  17. Sanitary article according to Claim 16, characterized in that the component can be reversibly connected to the sanitary article.
  18. Sanitary article according to Claim 16 or Claim 17, characterized in that the component is fitted together with the sanitary article, with the component preferably being inserted into the sanitary article.
  19. Sanitary article according to one of Claims 16 to 18, characterized in that at least one sealing element (7), preferably at least one sealing ring, is provided on the outer circumference of the sleeve-like component.
  20. Sanitary article according to one of Claims 16 to 19, characterized in that the component is placed in the sanitary article, preferably into a groove-like recess provided on the sanitary article.
  21. Sanitary article according to Claim 16 to 20, characterized in that the annular component is a sealing ring.
  22. Sanitary article according to one of Claims 16 to 21, characterized in that clearances or openings (8a, 8b) are provided on the component, in particular for holding retaining elements for the component.
  23. Sanitary article according to one of Claims 16 to 22, characterized in that the component is made of plastic, in particular PVDF or PTFE.
  24. Sanitary article according to one of Claims 16 to 23, characterized in that the sanitary article is a hand-held shower attachment.
  25. Sanitary article according to one of Claims 16 to 24, characterized in that the sanitary article is made of a thermoplastic, in particular ABS.
  26. Support in the form of an electroplating stand, characterized in that it is provided with at least one component, preferably a multiplicity of components, the component being made of an electrically nonconductive material and is in the form of a sleeve.
  27. Support according to Claim 26, characterized in that the component has at least one sealing element, preferably at least one sealing ring (7), arranged on the outer circumference of the component.
  28. Support according to Claim 26 or Claim 27, characterized in that the component has clearances or openings (8a, 8b), in particular for holding retaining elements for the component.
  29. Support according to Claims 26 to 28, characterized in that retaining elements provided on the support are guided through clearances or openings provided in the component.
EP06743085A 2005-06-03 2006-05-30 Method for producing electroplated plastic sanitary articles Not-in-force EP1745163B1 (en)

Applications Claiming Priority (2)

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DE102005026633A DE102005026633A1 (en) 2005-06-03 2005-06-03 Process for the production of galvanized plastic sanitary articles
PCT/EP2006/005122 WO2006128664A1 (en) 2005-06-03 2006-05-30 Method for producing electroplated plastic sanitary articles

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EP1745163A1 EP1745163A1 (en) 2007-01-24
EP1745163B1 true EP1745163B1 (en) 2011-03-16

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AT (1) ATE502136T1 (en)
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EP2427588A2 (en) 2009-05-08 2012-03-14 Grohe AG Sanitary objects
GB2470590B (en) * 2009-05-29 2014-07-23 Astron Advanced Materials Ltd Electrodeposition of elemental zirconium
DE102022104380A1 (en) * 2022-02-24 2023-08-24 Grohe Ag Method for producing a fitting housing for a sanitary fitting and sanitary fitting with a fitting housing

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WO2001031094A1 (en) * 1999-10-29 2001-05-03 Bae Systems Plc Masking techniques for metal plating

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NL6714122A (en) * 1967-10-18 1969-04-22
US4275908A (en) * 1979-08-16 1981-06-30 Teledyne Industries, Inc. Fluid coupling assembly
DE4123985C2 (en) * 1991-07-19 1994-01-27 Hoellmueller Maschbau H Device for the electrolytic treatment of printed circuit boards, in particular for the electrolytic coating with copper
DE19510855C2 (en) * 1995-03-17 1998-04-30 Atotech Deutschland Gmbh Process for the selective or partial electrolytic metallization of substrates made of non-conductive materials
DE19619254C1 (en) * 1996-05-13 1997-10-02 Nussbaum Oberflaechentechnik G Masking unit and corresponding method
DE10223081A1 (en) * 2002-05-17 2003-12-04 Hansgrohe Ag Process for the production of galvanized plastic sanitary ware

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ATE502136T1 (en) 2011-04-15
US8011100B2 (en) 2011-09-06
US20070251826A1 (en) 2007-11-01
DE502006009087D1 (en) 2011-04-28
EP1745163A1 (en) 2007-01-24
JP2008542538A (en) 2008-11-27
DE102005026633A1 (en) 2006-12-28

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