| 摘要 |
The method involves cutting trapezoidal blanks (5a, 6a, 5b, 6b, 5c, 6c) from an arrangement of the blanks per pair, where the blanks are arranged in a head-tail according to width of the sheet, and the blanks are aligned with a queue according to length of the sheet. Each blank includes right edges corresponding to side edges (9, 10) of a skirt and opposed curved edges e.g. upper edge (8) and lower edge (7). The blank is folded by joining and partial covering of the right edges to form the skirt. An independent claim is also included for a machine for producing blanks or sub-strips of alignments of the blanks from a sheet of simple or complex material. |
