GB1002047A - Method for manufacturing printed circuits - Google Patents

Method for manufacturing printed circuits

Info

Publication number
GB1002047A
GB1002047A GB4742562A GB4742562A GB1002047A GB 1002047 A GB1002047 A GB 1002047A GB 4742562 A GB4742562 A GB 4742562A GB 4742562 A GB4742562 A GB 4742562A GB 1002047 A GB1002047 A GB 1002047A
Authority
GB
United Kingdom
Prior art keywords
etching
dec
former
complex
chloride
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
GB4742562A
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.)
Blaupunkt Werke GmbH
Original Assignee
Blaupunkt Werke GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Blaupunkt Werke GmbH filed Critical Blaupunkt Werke GmbH
Publication of GB1002047A publication Critical patent/GB1002047A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C23—COATING 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
    • C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
    • C23F1/00—Etching metallic material by chemical means
    • C23F1/46—Regeneration of etching compositions

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • ing And Chemical Polishing (AREA)
  • Manufacturing Of Printed Circuit Boards (AREA)

Abstract

1,002,047. Etching. BLAUPUNKT-WERKE G.m.b.H. Dec. 17, 1962 [Dec. 21, 1961], No. 47425/62. Drawings to Specification. Heading B6J. In a method for producing printed circuits by etching copper foils laminated with plastic baseplates with cupric chloride, the etching bath is regenerated continuously or intermittently by adding a complex-former such as sodium chloride to dissolve the cuprous chloride formed in the etching reaction, an oxidizing agent such as oxygen gas or hydrogen peroxide, and chlorine ions in the form of chlorine gas or hydrochloric acid. The complex-former and oxidizing agent may be added in combination in the form of sodium chlorate. The adding of the regenerating substances may be carried out under the control of a pH measuring device and a photo-cell detecting the colour of the etching liquid. Excess etching liquid and running water are led into a tank to which a soda solution is added so as to recover cupric chloride.
GB4742562A 1961-12-21 1962-12-17 Method for manufacturing printed circuits Expired GB1002047A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEB65290A DE1225465B (en) 1961-12-21 1961-12-21 Process for etching copper with a copper (II) chloride solution

Publications (1)

Publication Number Publication Date
GB1002047A true GB1002047A (en) 1965-08-18

Family

ID=6974715

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4742562A Expired GB1002047A (en) 1961-12-21 1962-12-17 Method for manufacturing printed circuits

Country Status (2)

Country Link
DE (1) DE1225465B (en)
GB (1) GB1002047A (en)

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1102517B (en) * 1959-12-22 1961-03-16 Siemens Ag Process for etching copper

Also Published As

Publication number Publication date
DE1225465B (en) 1966-09-22

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