Process for producing aluminum electrode foil for capacitor and aluminum foil for etching
US7767107B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 1, 2005 |
| Grant date | Aug 3, 2010 |
| Priority date | — |
| Expiry date | Sep 2, 2027 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/12993
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A process for producing an aluminum electrode foil for a capacitor, which includes a first step of preparing an emulsion from a mixture including a first phase of a liquid resin or a resin solution obtained by dissolving a resin in a solvent, a second phase of a liquid that is incompatible with the first phase, and an emulsifier; a second step of coating the emulsion on a surface of an aluminum foil; a third step of removing the second phase to form a resin film having a plurality of pores on its surface; a fourth step of etching the aluminum foil having the resin film formed thereon; and a fifth step of removing the resin film after etching. The production process can form high-density etching pits with high accuracy.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.