| 摘要 |
PURPOSE:To change the total calorific value to be given to a box-like article in a short period of time, following up changes in the transfer speed of the box-like article. CONSTITUTION:With actions of a heater transfer mechanism 4, heater blocks 3 are brought in contact with and kept away from inside parts 2a of ring belts 2 synchronizing with the transfer speed of a box-like article, so that the number of the heater blocks 3 in contact with the insides 2a of the ring belts 2 is changed corresponding to the transfer speed of the box-like article A. |
