| 摘要 |
<p>A porous layer A for a pressure casting mold, such as a sanitary earthenware, formed of material composed mainly of resin material, a filler, a curing agent and water, the filler being formed of needle-like and ball-like glassy material, an average particle size of the needle-like filler being 1 through 10 mu m, and an average length of the same being 20 through 100 mu m, and that of the ball-like filler being 10 through 50 mu m, thereby obtaining the porous layer A hard to clog and high in durability. <IMAGE></p> |
