| 摘要 |
PROBLEM TO BE SOLVED: To provide a gas-sealed body for cushioning which is capable of enhancing the gas-tight effect, and a check valve device of the same. SOLUTION: A gas-filled passage is expanded, and a heat-resistant material is arranged between inner films. While gas is filled, two inner films are separated from each other, and a thermal seal point is thermoformed in an outer film. The coated heat-resistant material is freed from the thermal seal, a first intake port is spontaneously opened between the two inner films while the inner films are separated from the outer film. The gas passes through the first intake port and flows between the inner films, a second intake port is spontaneously opened thereby. After the gas passes through the second intake port, the gas advances into an air column to expand the air column. When the air column is completely expanded, the gas in the air column presses the inner films to pressure-sensitively stick one outer film thereto. The inner films in a curved area form a plurality of wrinkles, and one flat pressure-sensitive adhesion of the outer film is maintained in a columnar surface area. In other words, the gas in the air column presses the inner films, closes the second intake port, and blocks any flow of the gas into air column or leakage of the gas, preventing any external leakage of the gas, and enhancing the gas sealing effect. COPYRIGHT: (C)2009,JPO&INPIT
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