Title:
MOLD CLEANING SOLUTION, MOLD CLEANING METHOD AND MOLD CLEANING APPARATUS
Document Type and Number:
WIPO Patent Application WO/2005/108041
Kind Code:
A1
Abstract:
A method for cleaning a mold, wherein a main cleaning solution for use in the electrolytic cleaning as a main cleaning comprises a strongly alkaline component containing one or more selected from sodium hydroxide, potassium hydroxide and sodium carbonate, a chelating agent comprising EDTA 4-sodium salt, an oxidized material removing component comprising an organic or inorganic nitrogen, and sodium gluconate, wherein a purified water is used for the preparation of said main cleaning solution, which results in that the present method is suitable for the cleaning of a nickel mold used for molding a fine molded article, and wherein when a pre-cleaning is carried out before the electrolytic cleaning as a main cleaning, use is made of a pre-cleaning solution comprising a nonionic, cationic or anionic surfactant, sodium metasilicate and/or sodium orthosilicate and a chelating agent.
Inventors:
TOMITA KAZUMI (JP)
TOMITA MICHIO (JP)
TOMITA MICHIO (JP)
Application Number:
PCT/JP2005/007022
Publication Date:
November 17, 2005
Filing Date:
April 11, 2005
Export Citation:
Assignee:
SOMAX CO LTD (JP)
TOMITA KAZUMI (JP)
TOMITA MICHIO (JP)
TOMITA KAZUMI (JP)
TOMITA MICHIO (JP)
International Classes:
B08B3/04; B08B3/12; B29C33/72; C11D3/02; C11D3/04; C11D3/08; C11D3/10; C11D3/12; C11D3/20; C11D3/28; C11D3/30; C11D3/33; C11D11/00; B08B3/08; C23F11/14; C23G1/00; C23G1/14; C23G1/26; C23G3/00; C23G3/02; C25F1/00; (IPC1-7): B29C33/72; B08B3/08; B08B3/12; C11D3/04; C11D3/08; C11D3/20; C11D3/28; C11D3/30; C11D3/33; C23F11/14; C23G1/00; C23G1/14; C23G3/00
Foreign References:
| JPH08258090A | 1996-10-08 | |||
| JPH10134425A | 1998-05-22 | |||
| JPH07214570A | 1995-08-15 | |||
| JP2001181900A | 2001-07-03 | |||
| JP2001241000A | 2001-09-04 | |||
| JP2004077378A | 2004-03-11 | |||
| JPH11129259A | 1999-05-18 | |||
| JP2002086461A | 2002-03-26 |
Other References:
"Saishin Senjozai Shohoshu (3rd series)", KAWAKEN FINE CHEMICALS CO. LTD. LIFE JIGYOBU KENKYU GROUP, 1995, pages 420 - 429, XP002997078
OKUYAMA H. ET AL: "Senzai Senjo no Jiten '", KABUSHIKI KAISHA ASAKURA SHOTEN 6-29 SHIN'OGAWA-MACHI SHINJUKU-KU, 1990, TOKYO, JAPAN, pages 344 - 345, XP002997079
OKUYAMA H. ET AL: "Senzai Senjo no Jiten '", KABUSHIKI KAISHA ASAKURA SHOTEN 6-29 SHIN'OGAWA-MACHI SHINJUKU-KU, 1990, TOKYO, JAPAN, pages 344 - 345, XP002997079
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