| 摘要 |
<p>There is disclosed an elongate blank (1) intended to be formed into an elongate core for a strip structure. The blank (1) has a regular series of long slots (2) each extending across at least about 80% of the width of the blank (1) but stopping short of the marginal edges (3) of the blank, and two regular series of short slots (4), the short slots (4) in each series extending inwardly from a respective marginal edge (3) of the blank (1) and each being centered between the axes (5) of the adjacent long slots (2). The elongate blank (1) of the invention is readily bent into the desired configuration and does not require expensive bending operations. An extruded structure (10) having a metal core (13) in accordance with the present invention coated with a flexible resilient material may be supplied to the customer in its flat configuration and bent by the customer using relatively cheap bending equipment rather than the expensive equipment previously used.</p> |
