| 摘要 |
PROBLEM TO BE SOLVED: To enable a valve member for preventing a reverse flow of air fed between an outer layer and an inner layer to be fixed accurately when a laminated peeling-off type tube is used. SOLUTION: A laminated peeling-off type tube 10 is provided with an outer layer 15 and an inner layer 16. Air is introduced between the outer layer and the inner layer to enable these layers to be peeled off from each other. The surface of the outer layer 16 is provided with a small hole 14 for feeding air between the outer layer 16 and the inner layer 15. The rear surface of the small hole 14 is further provided with a film-like valve 17. The outer layer 16, the inner layer 15 and the valve 17 are integrally connected at the bottom part 18. |
