Encapsulation of an object under a controlled atmosphere in a cavity provided with a vent that is stopped with a porous material prior to final sealing

摘要

The encapsulation of an object (2) under a controlled atmosphere consists of: (a) placing the object in a cavity (12) provided with a vent (6) connecting the inside of the cavity with the outside; (b) putting the cavity under a controlled atmosphere; (c) closing the vent in an airtight manner, by stopping it with an intermediate layer (16) in a porous material before sealing it.