| 摘要 |
PROBLEM TO BE SOLVED: To provide a table ware comprising dew condensation resistance, heat insulation property, portability, multipurpose, or design property.SOLUTION: A tumbler comprises an upper cup 10 formed of a low water absorption ceramic and a lower cup 12 formed of a high water absorption ceramic. The low water absorption ceramic is a ceramic whose water absorption percentage is 5.5% (wt.%) or lower. Inner and outer wall faces of the upper cup 10 are glazed, and water absorption property on inner and outer wall faces of the upper cup 10 is low. The high water absorption ceramic is a ceramic whose water absorption percentage is 8.0% or higher. The high water absorption ceramic is an unglazed ceramic which is burned at temperature lower than main burning temperature by 100°C or more according to clay.SELECTED DRAWING: Figure 2 |
