Vacuum-sealing device and vacuum chamber device

A vacuum-sealing device comprising:

• a first roll that has a first outer circumferential surface made of a first elastic material and that is rotationally symmetric about a first central axis line;
• a second roll having a second outer circumferential surface which is made of a second elastic material and which contacts the first outer circumferential surface of the first roll, the second roll being rotationally symmetric about a second central axis line in parallel with the first central axis line;
• a first holding member including:
• a first space in which the first roll is held and which has an axis coincident with an axis of the first roll;
• and a first inner circumferential surface that defines the first space and that faces the first outer circumferential surface;
• and
• a second holding member including:
• a second space in which the second roll is held and which has an axis coincident with an axis of the second roll;
• and a second inner circumferential surface that defines the second space and that faces the second outer circumferential surface, the second holding member and the first holding member being opposed to each other so as to have a gap therebetween,
• rotation of the first roll and the second roll in correspondence with each other causing a sheet material to pass between the first roll and the second roll and through the gap.