| 摘要 |
A form-fill-seal machine has an ultrasonic vibration emitter head 11 positioned outside the tube being formed by the overlapping of the margins 3 and 5 of a film web and an anvil 13 positioned inside the tube defined by those margins 3 and 5, the anvil being mounted on a mount 25 which is supported by a frame element entirely independent of the forming box 1 used to suitably fold the film, so as to isolate the anvil from vibrations sustained from the forming box. The anvil mount 25 may be mounted directly to a carrier body for the ultrasonic vibration emitter and has the shape of an inverted letter J where the anvil 13 is positioned near the toe 25a of the J, the mounting to the sealing machine frame is at the top of the stem 25c of the J and there is a slot 25b between the toe 25a and the stem 25c. |
