| 摘要 |
A seal is provided for notebooks and albums to prevent inadvertent opening of the rings and to prevent pilferage of paper, photo album insert sheets and the like. The seal is a continuous band or overlapped loop of plastic material which is heat-shrunk over the rings. In the most preferred embodiment, the material used for the seal in spot welded, such as by ultrasonic welding, to hold it in place during the heat-shrink operation.
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