| 摘要 |
PROBLEM TO BE SOLVED: To provide a valve device of an air cell cushioning material in which an air injection path is connected to end parts of a plurality of air cells arranged in parallel through non-return valves at a substantially right angle, and air can be easily injected through the air injection path and the non-return valves. ! SOLUTION: An air injection path 5 is formed in a direction substantially orthogonal to a longer direction of air cells 4. A thermal fusion line 13 for valve is formed on the side of non-return valves 1 of the air injection path 5 along the air injection path 5. The non-return valve 1 is formed by superimposing a pair of films 11 and 12 for valve on the inside of a first film 2 and a second film 3 and thermally fusing the films by the thermal fusion line 13. Curved fusion parts 14, which are curved in a convex shape on the air injection path 5 side or curved in the convex shape on the air cell 4 side, are provided on the thermal fusion line 13 for valve. A valve path 15 of th |
