To provide a double seal which can hold an inserted material in a state where its physical properties do not change and can be utilized for various purposes.

The double seal is constituted by sticking a cover sheet 2 and a base material sheet 1 to a rear surface of which an exfoliating paper 6 is attached via adhering frames 3 and enclosing microcapsules 4 in a state where being broken and inside material flows out between the base material sheet 1 and the cover sheet 2 at a part surrounded by the adhering frames 3. Ink in which the microcapsules 4 are dispersed is applied and is held between the base material sheet 1 and the cover sheet 2 and then the microcapsules 4 are destroyed to manufacture the double sheet having the inserted material. Therefore components in the microcapsules 4 do not change at the time of drying the ink and the inserted material can be held in a state where its physical properties do not change. Further when capable of being put in the microcapsules, any material can be held between the base material sheet and the cover sheet and consequently this method can be utilized for various purposes.