| 摘要 |
<p>The invention provides a binder having a plastics strap of indefinite length formed with notches over its entire length to define locking positions for a separate blocking device having a member formed with a passage for the two end portions of the strap and locking teeth for engaging in the notches of the strap. The strap may for instance be made by extruding a continuous plastics tape and passing the tape between a pair of rollers of which one is provided with notch-forming teeth over its circumference, the tape being subsequently cut into straps of required length.</p> |
