DE2348191C3 - Process for the production of metal-free strips on metallized insulating foils - Google Patents
Process for the production of metal-free strips on metallized insulating foilsInfo
- Publication number
- DE2348191C3 DE2348191C3 DE19732348191 DE2348191A DE2348191C3 DE 2348191 C3 DE2348191 C3 DE 2348191C3 DE 19732348191 DE19732348191 DE 19732348191 DE 2348191 A DE2348191 A DE 2348191A DE 2348191 C3 DE2348191 C3 DE 2348191C3
- Authority
- DE
- Germany
- Prior art keywords
- electrode
- burnout
- metal
- metallized
- free
- 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
- 238000000034 method Methods 0.000 title claims description 9
- 239000011888 foil Substances 0.000 title claims description 4
- 238000004519 manufacturing process Methods 0.000 title claims description 3
- 239000007789 gas Substances 0.000 claims description 7
- 230000001681 protective effect Effects 0.000 claims description 6
- 229910052751 metal Inorganic materials 0.000 claims description 5
- 239000002184 metal Substances 0.000 claims description 5
- 238000001465 metallisation Methods 0.000 claims description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 4
- 239000003990 capacitor Substances 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 3
- 239000011248 coating agent Substances 0.000 claims description 2
- 238000000576 coating method Methods 0.000 claims description 2
- 239000001257 hydrogen Substances 0.000 claims description 2
- 229910052739 hydrogen Inorganic materials 0.000 claims description 2
- 229910052757 nitrogen Inorganic materials 0.000 claims description 2
- 239000011261 inert gas Substances 0.000 claims 1
- 238000000151 deposition Methods 0.000 description 3
- 230000008021 deposition Effects 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical group [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 239000000758 substrate Substances 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
- H01G13/00—Apparatus specially adapted for manufacturing capacitors; Processes specially adapted for manufacturing capacitors not provided for in groups H01G4/00 - H01G11/00
- H01G13/06—Apparatus specially adapted for manufacturing capacitors; Processes specially adapted for manufacturing capacitors not provided for in groups H01G4/00 - H01G11/00 with provision for removing metal surfaces
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Fixed Capacitors And Capacitor Manufacturing Machines (AREA)
- Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
Description
Die vorliegende Erfindung betrifft ein Verfahren zum Herstellen von metallfreien Streifen auf metallisierten Isolierstoffolien, insbesondere von Freirändern auf Kondensatorfolien für elektrische Kondensatoren, bei dem die metallisierten Isolierstoffolien an einer Ausbrennelektrode vorbeigeführt werden und bei dem zu einer örtlich begrenzten Entfernung der Metallisierung durch elektrische Impulse mit konstanter Spannungsamplitude und einer Dauer von 5 μβ und einer an die Bewegungsgeschwindigkeit der metallisierten IsolierstoffoLen angepaßten Impulsfolgefrequenz von über 100 kHz über einen Strombegrenzerwiderstand und über eine Ausbrennelektrode einem Metallbelag zugeführt werden, bei dem die Ausbrennelektrode während des Entmetallisierungsvorganges gereinigt wird, bei dem der Strombegrenzerwiderstand groß ist gegenüber 'dem Übergangswiderstand zwischen Ausbrennelektrode und Metallisierung und bei dem über die Dauer des Spannungsimpulses die zum Ausbrennen eines metallfreien Streifens von einer gewünschten Breite erforderliche Energie eingestellt wird. Ein derartiges Verfahren ist Gegenstand des Hauptpatents 23 04 184.The present invention relates to a method for producing metal-free strips on metallized ones Isolierstoffolien, in particular of free edges on capacitor foils for electrical capacitors where the metallized insulating foils are guided past a burnout electrode and where to a localized removal of the metallization by means of electrical impulses with constant voltage amplitude and a duration of 5 μβ and one to the speed of movement of the metallized insulating oils adapted pulse repetition frequency of over 100 kHz via a current limiter resistor and be fed via a burn-out electrode to a metal coating, in which the burn-out electrode during the demetallization process is cleaned, in which the current limiter resistance is large compared to '' the contact resistance between the burnout electrode and the metallization and the duration of the Voltage pulse required to burn out a metal-free strip of a desired width Energy is set. Such a process is the subject of main patent 23 04 184.
Bei einem derartigen Verfahren scheidet sich an der Elektrode ein Gemisch aus Metall und Metalloxiden ab, welches den Kontakt zwischen der Ausbrennelektrode und der Metallisierung verschlechtert Um diese Verschlechterung zu vermeiden, ist eine Reinigung der Ausbrennelektroden erforderlich. Werden selbstreinigende Ausbrennelektroden, die im Hauptpatent als Weiterbildungen enthalten sind, verwendet, so stören hierbei die von der Ausbrennelektrode sich lösenden abgeschiedenen Niederschläge.In such a process, a mixture of metal and metal oxides is deposited on the electrode, which deteriorates the contact between the burnout electrode and the metallization To avoid deterioration, it is necessary to clean the burnout electrodes. Be self-cleaning Burnout electrodes, which are included in the main patent as further developments, are used, so disturb in this case the deposited precipitates loosening from the burn-out electrode.
Aufgabe der vorliegenden Erfindung ist es, bei einem Verfahren der eingangs beschriebenen Art die Oxidbildung zu vermeiden und die Abscheidung von Metall aus sich beim Verfahren bildenden Metalldämpfen weitgehend zu verhindern, um dadurch die Zeit der störungsfreien Entmetallisierung zu erhöhen.The object of the present invention is to produce oxide in a method of the type described at the outset to avoid and the deposition of metal from metal vapors formed during the process to a large extent to prevent in order to increase the time of the trouble-free demetallization.
Diese Aufgabe wird gemäß der Erfindung dadurch gelöst, daß die Ausbrennelektrode im Bereich ihrer Berührung mit der metallisierten lsoiierstoffolie mit einem Schutzgasstrahl angeblasen wird.This object is achieved according to the invention in that the burnout electrode in the area of their Contact with the metallized insulating film is blown with a protective gas jet.
Gemäß der DE-PS 8 97 885 werden nach dem Ausbrennen metallfreier Streifen auf Isolierstoffträgern dort verbliebene Rückstände durch Absaugen oder Wegblasen entfernt Die Ausbrennelektrode wird dort nicht gereinigt, ein Schutzgas wird nicht verwendetAccording to DE-PS 8 97 885, metal-free strips are placed on insulating substrates after they have been burned out Any residues left there are removed by suction or blowing away. The burn-out electrode is placed there not cleaned, a protective gas is not used
Als Schutzgas hat sich Stickstoff bewährt Besonders vorteilhaft in bezug auf die Verhinderung von Oxidation ist jedoch ein Stickstoff-Wasserstoff-Gemisch.As a protective gas, nitrogen has proven to be particularly advantageous with regard to the prevention of oxidation however, it is a nitrogen-hydrogen mixture.
Die vorliegende Erfindung hat außerdem den Vorteil, daß die Ausbrennelektrode durch das Schutzgas gekühlt wird. Dies gilt insbesondere gegenüber einem ebenfalls möglichen Ausbrennen im Vakuum.The present invention also has the advantage that the burnout electrode is cooled by the protective gas will. This applies in particular to a possible burn-out in a vacuum.
Durch die vorliegende Erfindung wird eine Abscheidung von Oxid auf der Ausbrennelektrode verhindert; ebenso wird die Abscheidung von metallischem Aluminium verringert, da auch die Aluminiumdämpfe durch den Gasstrom weitgehend entfernt werden.The present invention prevents deposition of oxide on the burnout electrode; the deposition of metallic aluminum is also reduced, as are the aluminum vapors are largely removed by the gas flow.
Claims (3)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19732348191 DE2348191C3 (en) | 1973-01-29 | 1973-09-25 | Process for the production of metal-free strips on metallized insulating foils |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19732304184 DE2304184C3 (en) | 1973-01-29 | Process for the production of metal-free strips on metallized insulating foils and device for its implementation | |
| DE19732348191 DE2348191C3 (en) | 1973-01-29 | 1973-09-25 | Process for the production of metal-free strips on metallized insulating foils |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| DE2348191A1 DE2348191A1 (en) | 1975-04-10 |
| DE2348191B2 DE2348191B2 (en) | 1978-08-17 |
| DE2348191C3 true DE2348191C3 (en) | 1979-04-26 |
Family
ID=5893595
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE19732348191 Expired DE2348191C3 (en) | 1973-01-29 | 1973-09-25 | Process for the production of metal-free strips on metallized insulating foils |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE2348191C3 (en) |
-
1973
- 1973-09-25 DE DE19732348191 patent/DE2348191C3/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| DE2348191B2 (en) | 1978-08-17 |
| DE2348191A1 (en) | 1975-04-10 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C3 | Grant after two publication steps (3rd publication) | ||
| EF | Willingness to grant licences | ||
| 8340 | Patent of addition ceased/non-payment of fee of main patent |