| 摘要 |
PROBLEM TO BE SOLVED: To solve a problem that there is no seal having the following feature: in a case a loop is formed to be in locking condition, the locking condition cannot be canceled with an external impact or any tool: a broken area can be identified; in the broken case, restoration thereof may not be accomplished, thus providing enhanced security effect; and strength against its environment, such as temperature and humidity, can be maintained.SOLUTION: A seal comprises a loop forming part made of plastic. An insertion part having an engaging part is arranged on one end of the loop forming part. On the other end of the loop forming part, a receiving part is arranged which comprises a locking part into which the insertion part is inserted so as to lock the engaging part in an engaging manner. The receiving part is arranged on an end part of one surface of a flat board. The insertion part is arranged on an end part of a second flat board arranged orthogonal to a base end of the flat board in a manner where an insertion direction is regulated at a predetermined angle relative to a reception opening of the receiving part. Through holes for breaking are arranged near the base end of the flat board. |
