| abstract |
(57) [Summary] (Modifications) [Problem] As a sanitary ware, it has a mechanical strength with no problem in practical use, and determines a raw size shape in consideration of the amount of firing shrinkage and deformation due to shrinkage, so-called hanging. A work load can be reduced, and a porcelain with good product dimensional accuracy can be provided without performing a correction work such as grinding during manufacturing. A sanitary ware having a ceramic body and a glaze layer formed on a required portion of the body, wherein a filling rate of a molded body is 68% by volume or more, and a firing shrinkage rate in a longitudinal direction of the body. Is 6% or less, and the base material contains at least a CaO component. |