| 摘要 |
<p>An envelope is described with a closing and sealing device (1), comprising a closed end (25) and transverse opening (26) in the region of the other end, and a flap (27) which extends beyond the opening in the form of a continuation of at least one side of the envelope. The flap is formed with a series of orifices (28, 29) as is also the body of the envelope adjacent said opening (30). Such orifices are positioned to co-operate with locking pins (5) and co-operating female formations (15) present on the closing and sealing device which is wrapped in said flap. The device may then be doubled over itself to close the opening of the envelope, the locked end of the pins being inaccessible from outside due to the whole device being wrapped in or covered by the material of the flap.</p> |
