| 摘要 |
PROBLEM TO BE SOLVED: To provide a cap made of synthetic resin with a liner wherein even if high heat and pressure resistance is required for charging contents, a large pressure resisting function and a large leak angle can be maintained, and occurrence of seizure of the outside annular hanging wall of a liner can be avoided at the time of capping and moreover plug-opening torque can be reduced. SOLUTION: In the cap made of a synthetic resin provided with a liner 15 having an outside annular hanging wall 20 on the inner surface of a top wall, an annular recess 21 is provided near the inside top surface of the wall 20, while a bulged part 23 being a side seal fitting clearance 26 is provided at the lower end of the inner periphery, and further a side seal part is provided at the lower part of the annular hanging wall 20. |
