| 摘要 |
PROBLEM TO BE SOLVED: To heighten the productivity of a sealing step of a container of Natto by forming an unstuck part simultaneously with the sealing operation, and further to efficiently produce a sealed container of the Natto without damaging the commercial value. SOLUTION: This method for sticking a sheet-like lid body 2 of a thin film to a flange edge 12 of a container body 1 having the flange edge 12 protruded outward from the rim part of an upper opening by using a thermocompression sealing means, comprises forming one or plural unstuck parts 4 having small distances in the circumferential direction in the sticking part 3. |
