| 摘要 |
PROBLEM TO BE SOLVED: To provide a method and a device for producing a bladder for tire vulcanization capable of more improving the productivity and quality of a tire.SOLUTION: Before a device for tire vulcanization is installed, at least one step among: a step where, in a state where annular clamp parts 3, 4 connected to both the edge parts in the cylindrical axis direction of a cylindrical part 2 of a bladder 1 are respectively held by clamp mechanisms 12a, 12b, 13a, 13b, gas A is injected into the cylindrical part 2 so as to be expanded; a step where a gap between the clamp parts 3, 4 is made larger; and a step where a gap between the clamp parts 3, 4 is reduced is performed, and tension is beforehand applied to the cylindrical part 2 to make at least either the cylindrical axis direction length or the outside diameter of the cylindrical part 2 larger than that at the time of formation so as to form a prescribed shape.SELECTED DRAWING: Figure 4 |
