Barbed metal tape

A coiled tape formed from substantially planar metal strip stock and comprising a plurality of closed turns of successive linear tape segments each angularly offset in the plane of the tape at a uniform bend angle to its trailing segment at a bend zone between the tape segments, the tape segments each being of equal length and having a bend forming opening in its bend zone about which opening the tape is bent, the bend forming openings in the tape bend zones each being formed on a central longitudinal axis of its linear tape segment with the openings being of circular shape and equal diameter, the metal in each bend zone between its bend forming opening and adjacent outside and inside tape edges being respectively stretched and compressed, dimples of substantially identical configuration being formed in the metal between each opening and adjacent inside tape edge for uniformly controlled stacking of the turns of the coil in collapsed condition, the tape having a convex cross section extending between outside tape edges to define a crowned upper surface longitudinally extending throughout the length of the tape.

A coiled tape formed from substantially planar metal strip stock and comprising a plurality of closed turns of successive linear tape segments each angularly offset in the plane of the tape at a uniform bend angle to its trailing segment at a bend zone between the tape segments, the tape segments each being of equal length and having a bend forming opening in its bend zone about which opening the tape is bent, the bend forming openings in the tape bend zones each being of circular shape and of equal diameter and substantially identical dimples being formed in the metal in each bend zone between its opening and adjacent inside tape edge for uniformly controlled stacking of the turns of the coil in collapsed condition.