| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a bag making machine and a bag making method which can correct positions of sealing parts and cooling parts by moving the sealing parts and cooling parts through a simple configuration and a simple control method and are easily applicable to existing bag making machines provided with no tensile force application parts in the upstream or the downstream of individual processing parts.SOLUTION: A bag making machine includes a pair of tensile force application parts which are provided each in the upstream and downstream of individual processing parts in the carrying direction of a film W and apply a tensile force to the film W carried by a carrying part and a control part 60 which controls the tensile force application parts to adjust the magnitude of the tensile force to be applied to the film by at least one of the tensile force application part on the basis of the detection information of a detection mark obtained by a mark detection part, more specifically a mark sensor 72, provided between the tensile force application parts in the carrying direction of the film W.</p> |
