Patent ID: 8387683

Claim:
A method for producing a structure for producing cast articles having a gas permeability of 6 to 275 based on JIS (Japanese Industrial Standard) Z2601 comprising the steps of: dispersing a composition for structure for producing cast articles, comprising one or more inorganic particles selected from the group consisting of amorphous graphites and artificial graphites, the graphites having an average particle diameter of 120 to 800 μm, an inorganic fiber and, a thermosetting resin, in a dispersing medium to prepare a mold material in a dough state; filling a forming mold with the mold material in the dough state; and heating the forming mold to cure the thermosetting resin to form the structure, so that the structure for producing cast articles has a gas permeability of 6 to 275 based on said JIS Z2601 standard, wherein a shape factor of the inorganic particles is 2.3 to 1.0, the shape factor being equal to (boundary length) 2 /(4π*area).