Self-interlocking plastic strap

A strap which comprises:

• at least one flattened strip formed of a resilient, non-metallic material, the strip having a plurality of uniformly spaced-apart, elongate, transversely extending apertures formed therein;
• a plurality of pairs of slots, each slot extending from a side edge of the strip and having the respective end thereof terminating between and inwardly of the respective ends of a pair of the elongate apertures;
• and
• a plurality of arches, each arch being generally disposed between a side edge of the strip and the end of the aperture which is contiguous thereto;
• the width of each arch along a line which bisects the arch in a direction perpendicular to the centerline of the strip being greater than one half the width of each aperture along said centerline;
• the centers of curvature of the outer edge of each arch and of the end of said aperture being approximately coincident, thereby enhancing the spring action of the strip.