| 摘要 |
PURPOSE:To prevent a sealing body from interferring with an object to be packaged by a method wherein the rotational peripheral speed of the sealing body is set to be always higher than the feeding speed of a film, and when the sealing bodies engage, the rotational peripheral speed of the sealing body is controlled to meet the feeding speed of the film. CONSTITUTION:In a range of ant least 45 deg. in the front and rear from the point at which a pair of sealing bodies 40 rotate and mutually engage, the present position of the sealing body rotational speed to the feeding timing of an object to be packaged is controlled so that the sealing bodies 40 do not interfere with the object to be packaged 10. Therefore, the rotational peripheral speed of the sealing bodies 40 is set to be always higher than the feeding speed of the object to be packaged 10. For this purpose, the cutting pitch of a film 16 and the height of the object to be packaged 10 are greatly related, and this data has been previously input and set at the control panel. When a pair of sealing bodies 40 engage, the rotational peripheral speed of the sealing bodies is controlled in conforming with the feeding speed of the film 16. |
