To provide a method for packaging a solid body wherein even if a sealing operation is not performed in a vacuum device, a solid body can be easily housed in a packaging material, and further, when the packaging material is sealed, there is no gap between the solid body and the packaging material. When a solid body is housed in a packaging material and sealed, a replacement gas having a property of being able to be absorbed in the solid body is intentionally introduced in the packaging material. Thereby, after the sealing, the replacement gas is absorbed in the solid body, and thus, the gap between the solid body and the packaging material becomes smaller, and the solid body is closely attached to the packaging material. When the absorption of the replacement gas is held in the equilibrium state, the volume of the package body remains constant. On the other hand, when the package body is opened, a gap is generated between the solid body and the packaging material.本發明之課題係提供一種固形體的包裝方法,其即使未在真空裝置內進行密封作業,仍可容易地將固形體收納於包裝材料內,且於密封包裝材料時可消除固形體與包裝材料的間隙。解決方式係在將固形體收納於包裝材料並密封之際,特意將具有可被固形體吸收的性質的置換氣體導入包裝材料內。由此,密封後因置換氣體被固形體所吸收,固形體與包裝材料的間隙便縮小而使固形體與包裝材料密接。其後,當置換氣體的吸收達平衡狀態時,包裝體的體積便維持一定狀態。另一方面,在打開包裝體之際,固形體與包裝材料之間即產生間隙。
