To provide a means for simply predicting a physical property of a pattern on a substrate and a method for simply determining barrier rib baking conditions of a plasma display.

A model baked article is formed by baking a molded article containing inorganic components and the physical property of a pattern on a substrate baked in the same conditions is associated with the bulk density of the model baked article in advance, then, a physical property of a pattern on a substrate is predicted from a bulk density of a model baked article obtained in specific baking conditions when baking is performed under the same conditions. A model baked article is formed by baking a molded article containing inorganic components of a barrier rib provided for a plasma display substrate and baking conditions are determined so as to make the bulk density of the model baked article becomes 89-98% of a theoretical density by changing a baking temperature and a time.