Process for producing aluminum electrode foil for capacitor and aluminum foil for etching
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
C03C-015/00
H01G-009/00
출원번호
UP-0631869
(2005-08-01)
등록번호
US-7767107
(2010-08-24)
우선권정보
JP-2004-229218(2004-08-05)
국제출원번호
PCT/JP2005/014021
(2005-08-01)
§371/§102 date
20070108
(20070108)
국제공개번호
WO06/013812
(2006-02-09)
발명자
/ 주소
Kochi, Ayumi
Midou, Yuji
Shimasaki, Yukihiro
Fujii, Hiroshi
Aoyama, Tatsuji
출원인 / 주소
Panasonic Corporation
대리인 / 주소
Wenderoth, Lind & Ponack, L.L.P.
인용정보
피인용 횟수 :
0인용 특허 :
5
초록▼
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
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.
대표청구항▼
The invention claimed is: 1. A process for producing an aluminum electrode foil for a capacitor, the process comprising: a first step for preparing an emulsion from a mixture including a first phase of a liquid at least containing a resin, a second phase of a liquid that is incompatible with the fi
The invention claimed is: 1. A process for producing an aluminum electrode foil for a capacitor, the process comprising: a first step for preparing an emulsion from a mixture including a first phase of a liquid at least containing a resin, a second phase of a liquid that is incompatible with the first phase, and an emulsifier; a second step for coating the emulsion on a surface of an aluminum foil; a third step for removing the second phase to form a resin film having a plurality of pores on its surface; a fourth step for etching the aluminum foil having the resin film formed thereon; and a fifth step for removing the resin film after the etching. 2. The process of claim 1, wherein the first phase includes a liquid resin or a resin solution obtained by dissolving a resin in a solvent, the mixture further includes a cross-linking agent, and the third step includes cross-linking the liquid resin or the dissolved resin. 3. The process of claim 1, wherein the first step includes stirring and dispersing the mixture by using a homogenizer or a jet mill. 4. The process of claim 1, wherein the second step includes coating the emulsion by using any one of a die coater, gravure printing, a reverse roll, and a bar coater. 5. The process of claim 1, wherein the third step includes removing the second phase by using a solvent for dissolving the liquid of the second phase. 6. The process of claim 1, wherein the third step is evaporating the liquid of the second phase by heating. 7. The process of claim 1, wherein the aluminum foil is high purity aluminum with a purity of 99.99% or more. 8. The process of claim 1, wherein the aluminum foil is aluminum with (100) orientation of 85% or more. 9. The process of claim 1, wherein the first step includes preparing an emulsion in a form in which particles of the second phase are individually dispersed in a liquid that is the first phase. 10. The process of claim 9, wherein a diameter of the particles of the second phase is in a range from 0.05 to 10 μm. 11. The process of claim 9, wherein an interval between particles of the second phase is in a range from 0.01 to 10 μm. 12. The process of claim 1, wherein the first phase is a resin solution obtained by dissolving a water-insoluble resin in any one of organic solvent from ketone, ester and hydrocarbon, and the second phase is water. 13. The process of claim 12, wherein a boiling point of the solvent in the first phase is lower than 100° C. 14. The process of claim 12, wherein the water-insoluble resin includes at least one of a polyester resin, a phenol resin, a silicon resin, an acrylic resin, a polyimide resin, and butyral resin. 15. The process of claim 1, wherein the first phase includes a liquid resin or a resin solution obtained by dissolving a resin in a solvent, the resin included in the first phase is a water soluble resin, the second phase is aliphatic hydrocarbon, and the third step includes cross-linking the water soluble resin so as to be insolubilized in water. 16. The process of claim 15, wherein a boiling point of the liquid in the second phase is higher than 100° C. 17. The process of claim 15, wherein the water soluble resin is a resin including at least one of an isobutylene-maleic anhydride copolymer, cellulose, polyvinyl alcohol, polyethylene oxide, polyacrylamide and polyvinylpyrrolidone. 18. The process of claim 15, wherein the second phase includes at least one of octane, nonane, decane, dodecane and trimethylhexane.
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이 특허에 인용된 특허 (5)
Strange, Thomas F.; Stevens, James L.; Jiang, Xiaofei, Chemical printing of raw aluminum anode foil to induce uniform patterning etching.
Andrew J. Sanderson ; Richard S. Hamilton ; Kirstin F. Warner, Crystallization of 2,4,6,8,10,12-hexanitro-2,4,6,8,10,12-hexaazatetracyclo[5.5.0.05,903,11]-dodecane.
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