| 摘要 |
A sealing condition monitoring apparatus detects in a real-time manner a defectiveness of sealing due to entering of a foreign matter or due to defectiveness or malfunction of components of a sealing apparatus. There are provided a counter bar (30) disposed at the forward end of a counter jaw for sealing a packaging container into which a liquid food is charged, and a sealing bar disposed at the forward end of a heat sealing jaw to face the counter bar (30). A packaging material (11) is held between the sealing bar and the counter bar, and a pressing force is applied thereto for sealing. A sheet- shaped pressure sensor (38) is provided on the surface of the counter bar (30) for detecting the pressing force applied to the packaging material (11) at each detection point. Also, there is provided a controller (36) which compares data of the pressing force detected by the sheet-shaped pressure sensor (38) and master data which are previously set to correspond to a pressing force for obtaining proper sealing conditions. The controller (36) detects a defectiveness of sealing by comparing the data of detected pressing force and the master data. |
