| 摘要 |
<p>PROBLEM TO BE SOLVED: To execute operation for shrinkage of a heat-shrinkable tube or a heat-shrinkable sheet without nonuniformity according to operations and, besides, with excellent efficiency. SOLUTION: A thin film constituted of a magnetic loss material prepared by dispersing Fe, Co and Ni in a continuous phase of an oxide is formed on the surface of the heat-shrinkable tube or the heat-shrinkable sheet and the film is made to heat by high frequency induction heating. The heating is conducted by an oscillator disposed in the vicinity of the thin film or by a transmission line disposed in the vicinity of the film and connected to a high frequency power source.</p> |
