DE765252C - Arrangement to protect those parts of foils for electrolytic capacitors that have been mechanically pretreated before etching, which are to serve as connection lugs - Google Patents
Arrangement to protect those parts of foils for electrolytic capacitors that have been mechanically pretreated before etching, which are to serve as connection lugsInfo
- Publication number
- DE765252C DE765252C DEV37930D DEV0037930D DE765252C DE 765252 C DE765252 C DE 765252C DE V37930 D DEV37930 D DE V37930D DE V0037930 D DEV0037930 D DE V0037930D DE 765252 C DE765252 C DE 765252C
- Authority
- DE
- Germany
- Prior art keywords
- serve
- foils
- arrangement
- electrolytic capacitors
- etching
- 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
Links
- 238000005530 etching Methods 0.000 title claims description 13
- 239000011888 foil Substances 0.000 title claims description 9
- 239000003990 capacitor Substances 0.000 title claims description 5
- 239000002253 acid Substances 0.000 claims description 4
- 238000009996 mechanical pre-treatment Methods 0.000 claims description 3
- 229910052751 metal Inorganic materials 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- 238000000034 method Methods 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000001680 brushing effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000012188 paraffin wax Substances 0.000 description 1
- 238000005488 sandblasting Methods 0.000 description 1
- 230000002459 sustained effect Effects 0.000 description 1
- 230000003313 weakening effect Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G9/00—Electrolytic capacitors, rectifiers, detectors, switching devices, light-sensitive or temperature-sensitive devices; Processes of their manufacture
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- ing And Chemical Polishing (AREA)
Description
Anordnung zum Schutz derjenigen Teile von vor der Ätzung mechanisch vorbehandelten Folien für Elektrolytkondensatoren, die als Anschlußfahnen dienen sollen Bei der Ätzung von Anodenfolien für Elektrolytkondensatören ist darauf zu achten, daß die Ätzflüssigkeit die Stellen der Meta11-folie, die später als elektrische Anschlüsse dienen sollen, nicht derart tief ätzt, daß sie der nachfolgenden mechanischen Behandlung nicht standhalten und reißen oder brechen. Man hat daher die entsprechenden Stellen der Metallfolien beim Atzen mit geeigneten Mitteln, wie z. B. Paraffin, abgedeckt, um sie gegen den Säureangriff zu schützen. Dieses Verfahren ist jedoch verhältnismäßig teuer.Arrangement to protect those parts from mechanical etching pretreated foils for electrolytic capacitors, which serve as connection lugs When etching anode foils for electrolytic capacitors, it is important to do so make sure that the etching liquid removes the spots of the meta11 foil that will later be called electrical Connections are intended not to be etched so deep that they are the subsequent mechanical Will not withstand treatment and will tear or break. You therefore have the appropriate Place the metal foils when etching with suitable means, such as. B. paraffin, covered to protect them against acid attack. However, this procedure is relatively expensive.
Ferner ist es bekannt, zur Steigerung der Ätzwirkung Flächen der Aluminiumfolien durch Sandstrahlen, Bürsten usw. vorzubehandeln. Infolge der Entfernung des natürlichen Oxydfilms und Vergrößerung der Oberfläche wird nämlich der Säureangriff nachhaltiger, und der Ätzprozeß geht bei diesen Flächen rascher vor sich als bei jenen, die nicht derart mechanisch vorbehandelt sind.It is also known to increase the etching effect of surfaces of the aluminum foils pretreatment by sandblasting, brushing, etc. As a result of the removal of the natural Oxide film and enlargement of the surface, the acid attack becomes more sustained, and the etching process is faster on these surfaces than on those that do not are mechanically pretreated in this way.
Zum Schutz derjenigen Teile von vor der Ätzung mechanisch vorbehandelten Folien für Elektrolytkondensatoren, die als Anschlußfahnen dienen sollen, gegen übermäßige Schwächung durch den Angriff der Säure beim Ätzen werden gemäß der Erfindung diese Teile gegen die mechanische Vorbehandlung geschützt, also z. B. gegen den Angriff eines Sandstrahles od. dgl. durch Schablonen abgedeckt. Auf diese Weise kann der erforderliche Ätzgrad der Metallfolie unter Wahrung der für die Anschlußstreifen benötigten Festigkeit erreicht «-erden.To protect those parts that have been mechanically pretreated before etching Foils for electrolytic capacitors, which are to serve as connection lugs, against excessive weakening by the attack of the acid during etching are in accordance with the invention these parts against mechanical pretreatment protected, so z. B. od against the attack of a sandblast. Like. Covered by stencils. In this way, the required degree of etching of the metal foil can be achieved while maintaining the strength required for the connection strips reached «-erden.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEV37930D DE765252C (en) | 1941-08-02 | 1941-08-02 | Arrangement to protect those parts of foils for electrolytic capacitors that have been mechanically pretreated before etching, which are to serve as connection lugs |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEV37930D DE765252C (en) | 1941-08-02 | 1941-08-02 | Arrangement to protect those parts of foils for electrolytic capacitors that have been mechanically pretreated before etching, which are to serve as connection lugs |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE765252C true DE765252C (en) | 1954-10-18 |
Family
ID=7590425
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DEV37930D Expired DE765252C (en) | 1941-08-02 | 1941-08-02 | Arrangement to protect those parts of foils for electrolytic capacitors that have been mechanically pretreated before etching, which are to serve as connection lugs |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE765252C (en) |
-
1941
- 1941-08-02 DE DEV37930D patent/DE765252C/en not_active Expired
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