| 摘要 |
PURPOSE: To prevent a product from being included in a heater for lateral seal by changing the speed of motor feed and box motion of the heater for lateral seal with respective motors, increasing the approaching and lowering speed of an ironing plate more than film feed speed, and making the ironing plate iron a wrapping tube. CONSTITUTION: A pair of ironing plates 6a, 6b which face each other so that they may protrude to a position which is made the mating side nearer than heaters 5a, 5b for lateral seal each other are elastically supported at respective downsides of a pair of heaters 5a, 5b for lateral seal. They lower nearer a pair of heaters for lateral seal and close together for lateral seal, and then give a box motion which lowers further, opens and rises. By changing the speed of the box motion and film feed with respective motors, the approaching and lowering speed of the ironing plates 6a, 6b is increased more than wrapping film feed speed so that a pair of ironing plates may iron a wrapping tube H. |
