METHOD FOR MAKING ELECTRODE FOILS HAVING REDUCED PARTICLE DETACHMENT AND REDUCED LEAKAGE CURRENT
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United States of America Patent
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Jul 28, 2015
Grant Date -
Jul 30, 2015
app pub date -
Jan 30, 2014
filing date -
Jan 30, 2014
priority date (Note) -
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Abstract
Electrode foils suitable for use in electrolytic capacitors, including those having multiple configurations, have improved strength, reduced brittleness, and increased capacitance compared to conventional anode foils for electrolytic capacitors. Exemplary methods of manufacturing an anode foil suitable for use in an electrolytic capacitor include forming a pattern of etch resist on a surface of a substrate; etching a first area of the surface substantially enclosed by the pattern and a second area in intervals between the pattern to form tunnels in first and second areas of the surface; and removing the resist material revealing a non-etched frame. The resist material may be deposited, for example, by ink-jet printing, stamping or screen printing. Additionally, an etch resist pattern may be used to form strength lines on the substrate surface.
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