| 摘要 |
The method involves measuring a rotational angle of a capping head from a predetermined measurement starting point until a completion of rotational fastening. It is determined whether the rotational fastening is acceptable, according to whether the rotational angle is within a range of an acceptance decision angle which is set in advance. The measurement starting point is an engagement starting position at which, when a screw thread portion of the cap and a screw thread portion of the container are rotated relatively to each other, leading ends of both screw thread portions come into contact with each other. An independent claim is also included for the capper. |
