Title:
METHOD FOR MANUFACTURING DISHWASHER/DRYER
Document Type and Number:
WIPO Patent Application WO/2017/056845
Kind Code:
A1
Abstract:
Provided is a method for manufacturing a dishwasher/dryer provided with an inner wall comprising a stainless-steel plate that has on the surface thereof a hydrophilic coating that is durable with respect to alkaline detergents and also sufficiently durable with respect to acidic detergents. This method for manufacturing a dishwasher/dryer includes: a step for forming a first layer that contains zirconium oxide and silicon oxide on the surface of the inner wall, at a heat-treatment temperature of 200°C or higher; a step for forming a second layer that contains an oxoacid on the surface of the first layer, at a heat-treatment temperature lower than the heat-treatment temperature used for the first layer; and a step for washing off the second layer to obtain a thin-film layer that contains zirconium oxide and silicon oxide on the surface of the inner wall, the water contact angle of the surface of the thin-film layer being 20° or less. The first layer contains 80% by mass or more of zirconium oxide in terms of oxides, and 1-20% by mass of silicon oxide in terms of oxides.
Inventors:
SHIGERU KEIJIRO (JP)
Application Number:
PCT/JP2016/075780
Publication Date:
April 06, 2017
Filing Date:
September 02, 2016
Export Citation:
Assignee:
SUMITOMO OSAKA CEMENT CO LTD (JP)
International Classes:
A47L15/42; C23C24/08; C23C26/00
Foreign References:
| JP2007046097A | 2007-02-22 | |||
| JP2003310411A | 2003-11-05 |
Other References:
See also references of EP 3357396A4
Attorney, Agent or Firm:
SHIGA Masatake et al. (JP)
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