| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide an ultrasonic sealing device where the shape of a receiving base facing to a horn of an ultrasonic oscillator is so constructed that joining line of a sheet (wrapping material) is surely formed by sealing between the receiving base and the horn and the sheet is neither damaged nor torn by being hooked at the front end of the sheet during the time of the horizontal motion of the receiving base, and a reshaping work of the front end is easily performed when the front end is worn or broken. SOLUTION: The shape of the receiving base 7 facing to the horn 4 of the ultrasonic oscillator 3 is formed as a round bar as a whole, the tip 7X is flat, and the front edge has a curved surface of an arc.</p> |
