US2070679A - Process for preparing nonmetallic articles for electro-plating - Google Patents
Process for preparing nonmetallic articles for electro-plating Download PDFInfo
- Publication number
- US2070679A US2070679A US738540A US73854034A US2070679A US 2070679 A US2070679 A US 2070679A US 738540 A US738540 A US 738540A US 73854034 A US73854034 A US 73854034A US 2070679 A US2070679 A US 2070679A
- Authority
- US
- United States
- Prior art keywords
- copper
- electro
- articles
- plating
- preparing
- 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 - Lifetime
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D5/00—Electroplating characterised by the process; Pretreatment or after-treatment of workpieces
- C25D5/54—Electroplating of non-metallic surfaces
- C25D5/56—Electroplating of non-metallic surfaces of plastics
Definitions
- the invention relates to a process for preparing for electro-plating solid non-metallic bodies, especially those made of compressed materials, such as artificial resin and similar substances, by
- This process has the disadvantage that the ar- 15 ticle rendered conductive by the layer of metal powder receives in the non-galvanic copper bath an extremely thin coat of copper which does not adhere to the base substance and which will not withstand the mechanical stresses imposed by 2:) polishing or grinding while at the same time this coating of copper does not form aneifective base for the subsequent treatment in alkali baths.
- An electrically conductive layer of metal powder which has a lower potential than copper is applied to a non-metallic article by means of a 40 suitable varnish such'as a copal or other resin varnish, the surface of the article being roughened or similarly treated in known manner.
- the article'so treated is immersed in an acid copper, bath which acts as a binding bath without the use 45 of an electric current acting from without, in order to coat it with a closely adhering thin copper skin which ensures a uniform distribution of the current in a subsequent electro-deposition operation for the formation of a second film of copper.
- the copper skin completely covers the electrically conductive article it is advantageous to select as the electrically conductive layer a metallic powder the colour of which differs sufllciently from the colour of the copper such for example as an alloy of lead and zinc.
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)
Description
Patented Feb. 16, 1937 UNITED STATES PROCESS FOR PREPARING NONMETALLIC ARTICLES FOR ELECTm-PLATING Rudolf Pebiick and Kurt mm, Berlin, Germany No Drawing. Application August 4. 1934, Serial No. 738,540. In Germany August 7, 1933 2 Claims.
The invention relates to a process for preparing for electro-plating solid non-metallic bodies, especially those made of compressed materials, such as artificial resin and similar substances, by
5 preliminary coppering in the cold.
It has been proposed to prepare in the cold non-metallic articles to be electro-plated by first applying to the article by means of a resin varnish a layer of metal which is electrically conduc- 10 tive and then immersing the article so treated in a non-galvanic copper bath (coppering by immersion), the actual electro-deposition (such as nickeling, silvering etc.) following.
This process has the disadvantage that the ar- 15 ticle rendered conductive by the layer of metal powder receives in the non-galvanic copper bath an extremely thin coat of copper which does not adhere to the base substance and which will not withstand the mechanical stresses imposed by 2:) polishing or grinding while at the same time this coating of copper does not form aneifective base for the subsequent treatment in alkali baths.
It has furthermore been proposed to produce non-metallic articles suitable for the actual elec- 25 tro-deposition treatment by rendering them electrically conductive by means of a solution of copper bronze and celluloid lacquer, and then immersing the articles into a galvanic acid copper bath. It has been found, however, that the ad 30 hesiveness of the coatings so produced is not perfect and particularly that it is not possible to polish these coatings without the coating dissolving, at least in part.
These disadvantages are avoided according to the inventionby effecting the preliminary coppering in the following manner. 1
An electrically conductive layer of metal powder which has a lower potential than copper is applied to a non-metallic article by means of a 40 suitable varnish such'as a copal or other resin varnish, the surface of the article being roughened or similarly treated in known manner. The article'so treated is immersed in an acid copper, bath which acts as a binding bath without the use 45 of an electric current acting from without, in order to coat it with a closely adhering thin copper skin which ensures a uniform distribution of the current in a subsequent electro-deposition operation for the formation of a second film of copper.
'fhisgalvaniccopperingproceedsinflmumal manner, that is to say the article leaving the binding bath is placed in a galvanic acid copper bath in the manner usual in the manufacture of electrotype plates. Following this electrotype coppering operation, which advantageously lasts for from one to two hours and by means of which a base, which can be mechanically treated, is applied to the article, there is carried out the usual improving operation, namely nickeling, silvering, etc. 10
In order to be certain that the copper skin completely covers the electrically conductive article it is advantageous to select as the electrically conductive layer a metallic powder the colour of which differs sufllciently from the colour of the copper such for example as an alloy of lead and zinc.
We claim:
1. The process for preparing moulded articles of artificial resin for electro-plating which consists in roughening the external surfaces of the articles, applying to the roughened surfaces by means of a varnish a thin electrically conductive layer of a metal alloy powder containing lead and a metal of a potential lower than copper g5 and of a color differing from that of copper, immerging the articles in a first acid copper bath, removing them from said first acid copper bath after the formation of a thin copper skin on their surfaces, placing them in a second acid copper 'bath, and applying an electric current for electrolytic deposition of a copper layer on the copper skin formed in the first acid copper bath.
2. The process for preparing non-metallic articles for electro-plating which consists in rough- 5 ening the external surfaces of the articles, applying to the roughened surfaces by means of a varnish a thin electrically conductive layer of a metal alloy powder containing lead and a metal of a potential lower than copper and of a color 40 differing from that of copper, immersing the articles in a first acid copper bath, removing them from said first acid copper bath after the formation of a thin copper skin on their surfaces,
placing them in a second acid copper bath, and
applying an electric current for electrolytic deposition of a copper layer on the copper skin formed in the first acid copper bath.
RUDOLF PEBOCK.
KURT
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2070679X | 1933-08-07 |
Publications (1)
Publication Number | Publication Date |
---|---|
US2070679A true US2070679A (en) | 1937-02-16 |
Family
ID=7983538
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US738540A Expired - Lifetime US2070679A (en) | 1933-08-07 | 1934-08-04 | Process for preparing nonmetallic articles for electro-plating |
Country Status (2)
Country | Link |
---|---|
US (1) | US2070679A (en) |
FR (1) | FR762653A (en) |
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3310390A (en) * | 1962-03-27 | 1967-03-21 | Corning Glass Works | Electrically conductive abrasive bodies |
EP0097656A1 (en) * | 1982-01-04 | 1984-01-11 | General Electric Company | Electroplated augmentative replacement processed conductors and manufacture thereof |
US6825418B1 (en) | 2000-05-16 | 2004-11-30 | Wpfy, Inc. | Indicia-coded electrical cable |
US6906264B1 (en) | 2004-06-17 | 2005-06-14 | Southwire Company | Color-coded armored cable |
US20090095398A1 (en) * | 2007-10-11 | 2009-04-16 | Hardin William K | Method and system for applying labels to armored cable and the like |
US20100101821A1 (en) * | 2008-10-24 | 2010-04-29 | Southwire Company | Metal-clad cable with foraminous coded label |
US7954530B1 (en) | 2009-01-30 | 2011-06-07 | Encore Wire Corporation | Method and apparatus for applying labels to cable or conduit |
US8826960B1 (en) | 2009-06-15 | 2014-09-09 | Encore Wire Corporation | System and apparatus for applying labels to cable or conduit |
US9409668B1 (en) | 2007-06-04 | 2016-08-09 | Encore Wire Corporation | Method and apparatus for applying labels to cable |
US11031157B1 (en) | 2013-08-23 | 2021-06-08 | Southwire Company, Llc | System and method of printing indicia onto armored cable |
US11319104B1 (en) | 2009-01-30 | 2022-05-03 | Encore Wire Corporation | System and apparatus for applying labels to cable or conduit |
-
1933
- 1933-10-20 FR FR762653D patent/FR762653A/en not_active Expired
-
1934
- 1934-08-04 US US738540A patent/US2070679A/en not_active Expired - Lifetime
Cited By (41)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3310390A (en) * | 1962-03-27 | 1967-03-21 | Corning Glass Works | Electrically conductive abrasive bodies |
EP0097656A1 (en) * | 1982-01-04 | 1984-01-11 | General Electric Company | Electroplated augmentative replacement processed conductors and manufacture thereof |
EP0097656A4 (en) * | 1982-01-04 | 1986-05-14 | Gen Electric | Electroplated augmentative replacement processed conductors and manufacture thereof. |
US8278554B2 (en) | 2000-05-16 | 2012-10-02 | Wpfy, Inc. | Indicia-coded electrical cable |
US6825418B1 (en) | 2000-05-16 | 2004-11-30 | Wpfy, Inc. | Indicia-coded electrical cable |
US20050016754A1 (en) * | 2000-05-16 | 2005-01-27 | Wpfy, Inc., A Delaware Corporation | Indicia-marked electrical cable |
US7465878B2 (en) | 2000-05-16 | 2008-12-16 | Wpfy, Inc. | Indicia-marked electrical cable |
US20090084575A1 (en) * | 2000-05-16 | 2009-04-02 | Dollins James C | Indicia-Marked Electrical Cable |
US6906264B1 (en) | 2004-06-17 | 2005-06-14 | Southwire Company | Color-coded armored cable |
US11827409B1 (en) | 2007-06-04 | 2023-11-28 | Encore Wire Corporation | Method and apparatus for applying labels to cable |
US11247404B1 (en) | 2007-06-04 | 2022-02-15 | Encore Wire Corporation | Method and apparatus for applying labels to cable |
US10272616B1 (en) | 2007-06-04 | 2019-04-30 | Encore Wire Corporation | Method and apparatus for applying labels to cable |
US10046879B1 (en) | 2007-06-04 | 2018-08-14 | Encore Wire Corporation | Method and apparatus for applying labels to cable |
US10759558B1 (en) | 2007-06-04 | 2020-09-01 | Encore Wire Corporation | Method and apparatus for applying labels to cable |
US9452856B1 (en) | 2007-06-04 | 2016-09-27 | Encore Wire Corporation | Method and apparatus for applying labels to cable |
US9409668B1 (en) | 2007-06-04 | 2016-08-09 | Encore Wire Corporation | Method and apparatus for applying labels to cable |
US11667085B1 (en) | 2007-06-04 | 2023-06-06 | Encore Wire Corporation | Method and apparatus for applying labels to cable |
US11498715B1 (en) | 2007-06-04 | 2022-11-15 | Encore Wire Corporation | Method and apparatus for applying labels to cable |
US8540836B1 (en) | 2007-10-11 | 2013-09-24 | Southwire Corporation | Method for applying coded labels to cable |
US9070308B2 (en) | 2007-10-11 | 2015-06-30 | Southwire Company, Llc | Labeled armored electrical cable |
US20090095398A1 (en) * | 2007-10-11 | 2009-04-16 | Hardin William K | Method and system for applying labels to armored cable and the like |
US8347533B2 (en) | 2007-10-11 | 2013-01-08 | Southwire Company | Machine applied labels to armored cable |
US7812259B2 (en) | 2008-10-24 | 2010-10-12 | Southwire Company | Metal-clad cable with foraminous coded label |
US8344254B2 (en) | 2008-10-24 | 2013-01-01 | Southwire Company | Electrical cable with foraminous label |
US20100101821A1 (en) * | 2008-10-24 | 2010-04-29 | Southwire Company | Metal-clad cable with foraminous coded label |
US20110017489A1 (en) * | 2008-10-24 | 2011-01-27 | Agan Benny E | Electrical cable with foraminous label |
US9321548B1 (en) | 2009-01-30 | 2016-04-26 | Encore Wire Corporation | Method for applying labels to cable or conduit |
US11319104B1 (en) | 2009-01-30 | 2022-05-03 | Encore Wire Corporation | System and apparatus for applying labels to cable or conduit |
US10654607B1 (en) | 2009-01-30 | 2020-05-19 | Encore Wire Corporation | System and apparatus for applying labels to cable or conduit |
US9950826B1 (en) | 2009-01-30 | 2018-04-24 | Encore Wire Corporation | Method for applying labels to cable or conduit |
US10906685B1 (en) | 2009-01-30 | 2021-02-02 | Encore Wire Corporation | Method for applying labels to cable or conduit |
US12091207B1 (en) | 2009-01-30 | 2024-09-17 | Encore Wire Corporation | Method for applying labels to cable or conduit |
US9446877B1 (en) | 2009-01-30 | 2016-09-20 | Encore Wire Corporation | System and apparatus for applying labels to cable or conduit |
US10035618B1 (en) | 2009-01-30 | 2018-07-31 | Encore Wire Corporation | System and apparatus for applying labels to cable or conduit |
US11851233B1 (en) | 2009-01-30 | 2023-12-26 | Encore Wire Corporation | System and apparatus for applying labels to cable or conduit |
US8454785B1 (en) | 2009-01-30 | 2013-06-04 | Encore Wire Corporation | Method for applying labels to cable or conduit |
US7954530B1 (en) | 2009-01-30 | 2011-06-07 | Encore Wire Corporation | Method and apparatus for applying labels to cable or conduit |
US11673702B1 (en) | 2009-01-30 | 2023-06-13 | Encore Wire Corporation | Method for applying labels to cable or conduit |
US8826960B1 (en) | 2009-06-15 | 2014-09-09 | Encore Wire Corporation | System and apparatus for applying labels to cable or conduit |
US11670438B2 (en) | 2013-08-23 | 2023-06-06 | Southwire Company, Llc | System and method of printing indicia onto armored cable |
US11031157B1 (en) | 2013-08-23 | 2021-06-08 | Southwire Company, Llc | System and method of printing indicia onto armored cable |
Also Published As
Publication number | Publication date |
---|---|
FR762653A (en) | 1934-04-16 |
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