| 摘要 |
<p>There is disclosed an elongate blank (2), intended to be formed into an elongate channel-shaped core for a strip structure, the blank comprising a plurality of regularly spaced pairs of legs (6A, 6B) and a central region (10), each leg of a pair extending from a position outwardly of the central region of the blank to a lateral edge of the blank, the legs of a respective pair being substantially collinear, and the central region being provided with a plurality of evenly spaced apertures (22), each of which is collinear with the centreline of a respective pair of legs of the blank. A proportion of the apertures of the central region are offset to one side of the blank, others of the apertures being offset to the other side of the blank. A method of producing the elongate blank is also disclosed as well as a flexible channel-shaped strip structure incorporating a channel-shaped core made from the elongate blank.</p> |
