| 摘要 |
In a first embodiment of the present invention, a coating layer 3 which covers a container body 2 is formed; this coating layer 3 disappears while continuously and gradually reducing its thickness in a reduction rate of 0.1 to 1.5 µm/mm from a coating layer forming part 4 toward a coating layer non-forming part 5; and the coating layer 3 has a thickness reducing portion 6 in which a thickness reduction rate is 0.1 to 0.5 µm/mm at least in a range of 30 mm in a height direction immediately before a part where the coating layer 3 disappears. |
