Regard to consolidation method of powder composition, after the volume was reduced in the powder composition to the compaction, compaction product solidified until obtained, the present invention is to maintain a constant volume of the composition.本発明は粉末組成物の圧密化方法に関し、粉末組成物をある低減した体積まで圧密化した後、固まった圧密化製品が得られるまで、該組成物を一定体積に保持する。