| 摘要 |
Improved form, fill, and seal machine (10) for making aseptic sealed packages incorporating a plurality of sealing mechanisms (210, 220) mounted on a continuously advancing structure (200) in a form, fill, and seal machine. Induction heating is used to longitudinally seal the edges (24, 26) of the web (20) together to form a tube (22) and to transversely seal the tube. A circuit means is used for controlling the electromagnetic energy source output to form longitudinal seals and transverse seals. The plurality of sealing mechanisms include a sealing jaw (220) and an anvil jaw (210) hinged together and adapted to pinch the tube therebetween at predetermined locations as the sealing mechanisms and web tubing advance. Each sealing jaw contains a transverse induction coil (225) for transversely sealing the tube. Coupling and energization means select for forming a longitudinal seal segment or a transverse seal or both. |
