| 摘要 |
PROBLEM TO BE SOLVED: To provide a container with a durable screw cap in which it can be easily confirmed that tightening of a screw at a proper position has been completed, and occurrence of a loosening can be prevented after tightening.SOLUTION: A container with a screw cap comprises a container in which a thread part is formed on an outer periphery of a mouth and a cap having an annular wall in which a thread part engaging with the thread part of the container is formed on an inner periphery, in which a projection rib traversing a thread groove is provided near a lower end part a ridge of the thread part on the outer periphery of the mouth, a salient or a recess, or an uneven part, in which a recess is formed following a salient is provided near a lower end part of a ridge of the thread part on the inner periphery of the annular wall engaging with the thread groove, and an elastic deformation part is formed to the annular wall over a predetermined range corresponding to the salient or the recess, or the uneven part. |
