Abstract: A coupled balloon includes: a first balloon body, at least one second balloon body, through-holes formed in the balloon bodies via which the balloon bodies communicate with each other, and a double-sided bonding tape having a communication hole which is aligned with the through-holes, by which outward-surface-side peripheral edge portions of each of the through-holes are joined together. Inside of the balloon bodies include a heat seal layer, and outside thereof is formed by overlapping films configured from gas barrier layers. A valve for injecting a gas into one location on a peripheral edge of the first balloon body is interposed, and the peripheral edge other than an inner surface of the valve is thermally fused. A peripheral edge of the at least one second balloon body is thermally fused.

Abstract: A coupled balloon includes: a first balloon body, at least one second balloon body, through-holes formed in the balloon bodies via which the balloon bodies communicate with each other, and a double-sided bonding tape having a communication hole which is aligned with the through-holes, by which outward-surface-side peripheral edge portions of each of the through-holes are joined together. Inside of the balloon bodies include a heat seal layer, and outside thereof is formed by overlapping films configured from gas barrier layers. A valve for injecting a gas into one location on a peripheral edge of the first balloon body is interposed, and the peripheral edge other than an inner surface of the valve is thermally fused. A peripheral edge of the at least one second balloon body is thermally fused.

Abstract: A non-latex balloon 10 having a double balloon structure, having an outer balloon made of a pair of films 21, 22 for the outer balloon of which the peripheral edges 23 are heat-sealed; and an inner balloon disposed in the outer balloon, likewise made of a pair of films for the inner balloon of which the peripheral edges are heat-sealed. A first check valve 40 to fill a gas into the outer balloon 20, is integrally bonded to the outer balloon by heat-sealing of the films 21, 22 for the outer balloon; and a second check valve 50 to fill a gas into the inner balloon 30 is inserted and disposed between the films of the outer balloon 20 and between the films of the inner balloon 30, and integrally bonded to respective balloons by heat-sealing of the films. On the inner sides of the respective check valves 40, 50, non-heat sealing portions 44, 54, 55 are provided to secure gas permeation.