| 摘要 |
PROBLEM TO BE SOLVED: To provide a bag making and filling machine in which a sealing defect of sandwiching a packaged article in a lateral heat sealing part can be prevented as much as possible.SOLUTION: In a bag making and filling machine, a lateral heat sealing part Sb is formed by abutting protrusions 41 respectively provided on a pair of sealing rolls 40, 40 rotated while sandwiching film F therebetween. A peripheral surface 410 of the protrusion 41 is formed along a rotation direction z of the sealing roll 40, and is configured by including a sealing surface 410a, and a drawing surface 410b arranged on the front side of rotation of the sealing roll 40 than the sealing surface 410a and for reducing a distance to a rotation center of the sealing roll 40 further than the sealing surface 410a.SELECTED DRAWING: Figure 5 |
