| 摘要 |
PROBLEM TO BE SOLVED: To accurately measure the temperature of a sealant when plastic sheets constituting a package or the like are fused actually. SOLUTION: When the layers 11A, 12A to be sealed of the plastic sheets 11, 12 opposed to each other are fused to be sealed each other, the temperature measuring contact M of a thermocouple 15 constituting a thermoelectric thermometer 14 is attached to the seal surface of the layers 11A, 12A to be sealed to measure temperature. |
