DE3804487C1 - Anode cage - Google Patents

Anode cage

Info

Publication number
DE3804487C1
DE3804487C1 DE19883804487 DE3804487A DE3804487C1 DE 3804487 C1 DE3804487 C1 DE 3804487C1 DE 19883804487 DE19883804487 DE 19883804487 DE 3804487 A DE3804487 A DE 3804487A DE 3804487 C1 DE3804487 C1 DE 3804487C1
Authority
DE
Germany
Prior art keywords
anode
basket
electrolyte
cage
copper
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
DE19883804487
Other languages
German (de)
Inventor
Hans-Hermann Dipl.-Ing. 8900 Augsburg De Merkenschlager
Georg Dipl.-Ing. 8901 Rettenbergen De Mueller
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Wincor Nixdorf International GmbH
Original Assignee
Siemens AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Siemens AG filed Critical Siemens AG
Priority to DE19883804487 priority Critical patent/DE3804487C1/en
Application granted granted Critical
Publication of DE3804487C1 publication Critical patent/DE3804487C1/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • C25D17/10Electrodes, e.g. composition, counter electrode
    • C25D17/12Shape or form
    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05KPRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K3/00Apparatus or processes for manufacturing printed circuits
    • H05K3/22Secondary treatment of printed circuits
    • H05K3/24Reinforcing the conductive pattern
    • H05K3/241Reinforcing the conductive pattern characterised by the electroplating method; means therefor, e.g. baths or apparatus

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Electroplating Methods And Accessories (AREA)

Abstract

The invention relates to an anode cage (anode basket) made of a metal insoluble in the electrolyte, for holding disintegrated anode material. In electroplating installations equipped with such anode cages, increased consumption of the organic components added to the electrolyte, due to chlorine being formed at the anodes, can be observed. In order to reduce the consumption of the organic bath additions, the anode cage is coated, according to the invention, with a non-conductive layer on the outer faces not required for feeding in current.

Description

Die Erfindung betrifft einen Anodenkorb aus in Kupferelektro­ lyten nicht lösbarem Metall, wie Titan, zur Aufnahme zerklei­ nerten Anodenmaterials, wie Kupfer für Galvanisierungseinrich­ tungen, insbesondere für Leiterplatten.The invention relates to an anode basket made of copper electro lyte non-detachable metal, such as titanium, for holding nert anode material, such as copper for electroplating equipment tion, in particular for printed circuit boards.

Bei Galvanisiereinrichtungen für Leiterplatten haben sich als Anoden Metallkörbe, die meist aus Titanstreckmaterial bestehen und die mit zerkleinertem Kupfer, wie z.B. Kupferpellets, Kupferplatten oder Kupferknüppel gut bewährt. Diese Anoden erlauben eine vollständige Ausnutzung des Anodenmaterials. Ein besonderer Vorteil liegt darin, daß die Anoden nicht gewechselt werden müssen und das Anodenmaterial während des Badebetriebs in die Körbe nachgefüllt werden kann.In electroplating equipment for printed circuit boards have proven to be Anode metal baskets, which mostly consist of titanium expanded material and those with crushed copper, such as Copper pellets, Copper plates or copper billets have been tried and tested. These anodes allow full use of the anode material. A a particular advantage is that the anodes are not changed and the anode material during bathing can be refilled in the baskets.

Nachteilig ist jedoch, daß dabei ein erhöhter Verbrauch der den Elektrolyten zugesetzten organischen Komponenten auftritt. Die­ ser erhöhte Verbrauch entsteht dadurch, daß an den als Anoden geschalteten Titankörben z.B. Chlor entsteht das wiederum in Sekundärreaktionen die organische Badezusätze oxidiert.The disadvantage, however, is that an increased consumption of the Organic components added to electrolytes occur. The ser increased consumption arises from the fact that at the as anodes switched titanium baskets e.g. This in turn creates chlorine Secondary reactions that oxidize organic bath additives.

In der DE-OS 22 60 803 wird ein Anodenkorb für die Galvanik be­ schrieben, bei dem es darum geht, die ungleichmäßige Galvani­ sierung in den Randbereich des Galvanisierungsgutes zu reduzie­ ren. Zu diesem Zweck wird vorgeschlagen, den Korb in dem Be­ reich, in dem ein Ionenaustritt unerwünscht ist, das ist im we­ sentlichen an der Ober- und Unterseite, mit einer haftenden Kunststoffbeschichtung abzuschirmen. Mit dieser Abschirmung wird aber auch der Ionenaustausch in diesem Bereich mit dem Galvanisiergut unterbunden, was ja im Sinne der dort genannten Aufgabenstellung ist. In DE-OS 22 60 803 an anode basket for the electroplating be wrote, which is about the uneven plating Reduction in the edge area of the electroplating material For this purpose, it is proposed that the basket in the Be rich in which an ion leakage is undesirable, that is in the we noticeable on the top and bottom, with an adhesive Shield plastic coating. With this shield but also the ion exchange in this area with the Electroplating material prevented, which in the sense of those mentioned there Task is.  

In der GB-PS 10 24 693 wird ebenfalls aus Kostengründen vorge­ schlagen, nur die Ober- und Unterseite des Korbes mit Titan auszuführen und den dazwischenliegenden gitterförmigen Korbbe­ reich aus Kunststoff anzufertigen und die Kontaktierung der eingefüllten Kupferteile mit Hilfe eines im Zentrum des Korbes angeordneten Titanstabes vorzunehmen. Eine solche Kontaktierung erschwert aber die Stromzuführung, weil der Strom nicht auf der gesamten Korbinnenseite zugeführt werden kann, und damit viele unmittelbare Stromzugänge zum Anodengut vorhanden sind, sondern lediglich durch einen Stab im Zentrum, wobei die Stromzuführung teilweise über das Anodengut selbst zu dem weiter nach außen liegenden Anodengut gebracht werden muß, was erfahrungsgemäß immer zu undefinierten Stromverhältnissen führt. Derartige un­ definierte Stromverhältnisse bedingen aber auch Einbußen in der Galvanisierungsqualität, die bei einem Produkt wie einer ge­ druckten Leiterplatte, mit der heute gewohnten Qualität nicht mehr vereinbar wäre.In GB-PS 10 24 693 is also featured for reasons of cost hit only the top and bottom of the basket with titanium execute and the lattice-shaped basket in between to make rich plastic and contacting the filled copper parts with the help of one in the center of the basket arranged titanium rod. Such contacting but complicates the power supply because the electricity is not on the entire basket inside can be fed, and thus many there are direct current accesses to the anode material, but only by a rod in the center, the power supply partly to the outside via the anode material itself horizontal anode material must be brought, which experience has shown always leads to undefined current conditions. Such un Defined current ratios also result in losses in the Electroplating quality that a product like a ge printed circuit board, with the quality we are used to today would be more compatible.

Aufgabe der vorliegenden Erfindung ist es, bei Galvanisieran­ lagen, die Anodenkörbe enthalten, die aus im Elektrolyten nicht lösbarem Material bestehen, eine Reduzierung des Zusatzverbrau­ ches von organischen Badzusätzen zu bewirken.The object of the present invention is to galvanize that contained anode baskets that weren't in the electrolyte removable material, a reduction in additional consumption ches of organic bath additives.

Zur Lösung dieser Aufgabe wird der Anodenkorb gemäß der Erfin­ dung derart ausgebildet, daß die nicht zur Stromzuführung be­ nötigten Außenflächen des Anodenkorbes mit einer nicht leiten­ den Beschichtung versehen sind, so daß der Anodenkorb nur noch die Funktion der Stromzuführung zu dem darin befindlichen Ano­ denmaterial hat.To solve this problem, the anode basket according to the Erfin dung formed such that the be not for power supply do not conduct necessary outer surfaces of the anode basket with a the coating are provided so that the anode basket only the function of the power supply to the Ano inside has the material.

Durch diese Maßnahme wird bei Galvanisiereinrichtungen mit Anodenkörben aus im Elektrolyten nicht lösbarem Material, die Bildung von Chlor, durch dem Bad zugesetzte Chloride, und die damit verbundene Oxidation der organischen Badzusätze vermin­ dert. Die Anodenkörbe haben nur noch die Funktion der Stromzu­ führung zu dem darin befindlichen Anodenmaterial.This measure is used in electroplating equipment Anode baskets made of material that is not soluble in the electrolyte Formation of chlorine, chlorides added by the bath, and the associated oxidation of the organic bath additives min different. The anode baskets only have the function of power supply guide to the anode material inside.

Claims (1)

Anodenkorb aus im Elektrolyten nicht lösbarem Metall, wie Ti­ tan, zur Aufnahme zerkleinerten Anodenmaterials, wie Kupfer für Galvanisiereinrichtungen, insbesondere für Leiterplatten, dadurch gekennzeichnet, daß die nicht zur Stromzuführung benötigten Außenflächen des Anodenkorbes mit einer nicht leitenden Beschichtung versehen sind, so daß der Anodenkorb nur noch die Funktion der Stromzuführung zu dem da­ rin befindlichen Anodenmaterial hat.Anode basket made of non-detachable metal in the electrolyte, such as titanium, for holding comminuted anode material, such as copper for electroplating devices, in particular for printed circuit boards, characterized in that the outer surfaces of the anode basket which are not required for power supply are provided with a non-conductive coating, so that the anode basket only has the function of supplying current to the anode material located therein.
DE19883804487 1988-02-12 1988-02-12 Anode cage Expired DE3804487C1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19883804487 DE3804487C1 (en) 1988-02-12 1988-02-12 Anode cage

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19883804487 DE3804487C1 (en) 1988-02-12 1988-02-12 Anode cage

Publications (1)

Publication Number Publication Date
DE3804487C1 true DE3804487C1 (en) 1989-08-24

Family

ID=6347331

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19883804487 Expired DE3804487C1 (en) 1988-02-12 1988-02-12 Anode cage

Country Status (1)

Country Link
DE (1) DE3804487C1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4029125A1 (en) * 1989-09-14 1991-03-28 Permelec Electrode Ltd ELECTRODE PROTECTION DEVICE
WO2004038071A2 (en) * 2002-10-18 2004-05-06 Eltech Systems Corporation Coatings for the inhibition of undesirable oxidation in an electrochemical cell

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1024693A (en) * 1962-04-30 1966-03-30 Julius John Preston Improvements in or relating to plating anodes
DE2260803A1 (en) * 1972-12-13 1974-06-20 Bolta Werke Gmbh Anode basket for galvanizing plant - made of titanium wire mesh with PVC coating of top band

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1024693A (en) * 1962-04-30 1966-03-30 Julius John Preston Improvements in or relating to plating anodes
DE2260803A1 (en) * 1972-12-13 1974-06-20 Bolta Werke Gmbh Anode basket for galvanizing plant - made of titanium wire mesh with PVC coating of top band

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4029125A1 (en) * 1989-09-14 1991-03-28 Permelec Electrode Ltd ELECTRODE PROTECTION DEVICE
WO2004038071A2 (en) * 2002-10-18 2004-05-06 Eltech Systems Corporation Coatings for the inhibition of undesirable oxidation in an electrochemical cell
WO2004038071A3 (en) * 2002-10-18 2005-01-20 Eltech Systems Corp Coatings for the inhibition of undesirable oxidation in an electrochemical cell

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Legal Events

Date Code Title Description
8100 Publication of the examined application without publication of unexamined application
D1 Grant (no unexamined application published) patent law 81
8364 No opposition during term of opposition
8327 Change in the person/name/address of the patent owner

Owner name: SIEMENS NIXDORF INFORMATIONSSYSTEME AG, 33106 PADE

8339 Ceased/non-payment of the annual fee