Sealing structure of sealed container, formation method therefor, gas generator using sealing structure of sealed container, and manufacturing method therefor

A sealing structure of a sealed container, comprising:

• a metallic cylindrical container having an opening;
• and
• a metallic closing member that closes the opening, the metallic closing member having a first surface facing outside of the sealed container, a second surface facing inside of the sealed container, and an outer circumferential surface extending between the first surface and the second surface, the outer circumferential surface of the metallic closing member opposing an inner wall surface of the metallic cylindrical container, the outer circumferential surface and the first surface of the metallic closing member being one of plated with metal and covered with thermoplastic resin,
• wherein the metallic closing member seals the opening of the metallic cylindrical container by one of melted metal and melted thermoplastic resin provided between the outer circumferential surface of the metallic closing member and the inner wall surface of the metallic cylindrical container, and between the first surface of the metallic closing member and an annular deformed part of the metallic cylindrical container formed by deforming one end of the metallic cylindrical container to face the first surface, and
• wherein the one of melted metal and melted thermoplastic resin is a material different from a material of the metallic cylindrical container and the metallic closing member.