| 摘要 |
PURPOSE:To provide a method for smoothly fusion-bonding a seam of a film continuously stably irrespective of a thickness of a fluorine resin lined film. CONSTITUTION:A method for fusion-bonding a seam 4 of a fluorine resin film to be lined on a base material with a cover film 5 comprises the steps of placing the cover film of the same material as that of a lining film 3, blowing warm air or hot air 14 to preheat to fusion-bond it, then irradiating it with a YAG laser to fusion-bond the film 5, and smoothing its end. |
