| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a method and apparatus for manufacturing a base isolation plug, capable of manufacturing a base isolation plug having a low air content while preventing molding failures, and to provide a base isolation plug which has a flat end surface and a low air content, and is excellent in damping performance and displacement followability. <P>SOLUTION: The method for manufacturing a base isolation plug for base isolation structure by pressure-molding a powder material containing a plastic fluid material and a hard filler in a mold comprises a preliminary pressure-molding step of pressurizing at least one side of the powder material charged in the mold by use of a wedge plusher having two flat planes crossing at a top side located on the pressurizing direction side as pressurizing surfaces; and a final pressure-molding step of pressurizing the powder material pressurized by the wedge pusher in the preliminary pressure-molding step by use of a flat pusher having a plane orthogonal to the pressurizing direction as a pressurizing surface. A manufacturing device suitable to the method, and a base isolation plug manufactured by the method are also provided. <P>COPYRIGHT: (C)2012,JPO&INPIT |
