| 摘要 |
A package excellent in sealing capability by forming a semi-fusion portion, for preventing a film package from becoming very thin, between fusion portions and a non-fusion portion of the film package, and a production device and method thereof. The package comprises a film package mainly consisting of resin and is fusion-sealed by heating by ultrasonic vibration after the opening of the film package is bundled, characterized in that the fusion-sealed sealing portion has fusion portions formed by completely fusing the film package, and a semi-fusion portion continuously connected to the fusion portions. |
