| 摘要 |
PROBLEM TO BE SOLVED: To provide a fireproof film manufacturing method for forming a fireproof film in which a distortion is eliminated by reducing air bubbles and making the thickness uniform, and which is excellent in transmissivity and visibility.SOLUTION: There are provided a fireproof film manufacturing method and a fireproof film, especially a fireproof film manufacturing method and a fireproof film using a foamable thermal insulation material. The fireproof film manufacturing method comprises: a heating process for heating the liquid foamable thermal insulation material adjusted to high viscosity; an agitation process for agitating the foamable thermal insulation material; and an excitation process for exciting the foamable thermal insulation material with an ultrasonic wave.SELECTED DRAWING: Figure 1 |
