| 摘要 |
A structure formed from a sheet of a material (25), the sheet being generally rectilinear in shape, and wherein the sheet comprises a plurality of folds (5, 7) so as to enable it to be expanded or compressed in a linear direction between its mutually opposite ends (9, 11) and wherein, when in an expanded position, the sheet (25) co-operates with an underlying surface so as to form a self-supporting enclosure having an opening generally in the region underlying each of its said mutually opposite ends, and wherein the sheet may be compressed linearly between its said mutually opposite ends (9, 11) so as to form a compact article. |
