| 摘要 |
The present invention provides a seal portion heating method for a resinous tube which is applied to a seal portion heating apparatus for a resinous tube which is constituted so as to spout hot blow from a spout hole in a nozzle distal end portion to heat an end portion inner peripheral portion of a resinous tube serving as a clamped and sealed portion, wherein the resinous tube is rotated during heating of the end portion inner portion of the resinous tube serving as the clamped and sealed portion of the resinous tube. Therefore, in the seal portion heating apparatus for a resinous tube, the end portion of the resinous tube serving as the sealed portion is heated uniformly to obtain excellent sealing and achieve excellent appearance.
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