| 摘要 |
In fabricating sheet material with closely spaced parallel ribs on one side, a mold with ribbed shaped grooves is uniformly filled with a loose, dry molding material using a coater with a plurality of adjacent blades extending therefrom with the blade tips parallel to and preferably in contact with the mold top surface. The coater is swept across the mold top surface and the blades distribute and compress the molding material into the mold grooves. The invention is particularly useful for molding materials with high fiber content which are difficult to pack uniformly and with sufficient density into the mold. |
