PURPOSE: To provide a protective vessel for non-evaporation type getter materials that is simple, easy to open and easily usable.

CONSTITUTION: This provides the first sheet 102 composed of a thermally stable material and the second sheet 118 of a thermo-shrinkable organic plastic material and the heat sensitive adhesive 104 that attaches the first and second sheets, encloses the getter material 116 with the first and second sheets and stores it in a hollow 108. In this case, a cleavage induction means can be included. By the way, this is adaptable to any getter material but particularly to reactive non-evaporation barium getter alloy Baz+(Ba1-xAx)nBm for example as the object, which may be metallized onto the sheet. With a sheet made of shrinkable organic plastic material, the seal can easily be broken by heating to a temperature below 150°C.