| 摘要 |
The invention relates to a folding card 1 with a cover 2 that is connected to a back 3 by at least one fold line F1 and with an internal folding system 4, that is connected at least to the inside surface 3a of the back 3 and can assume a three-dimensional form when the card is unfolded. In order to achieve a particularly effective and optimal effect, the internal folding system 4 consists of at least two superimposed frame elements that change their relative positions when the card is unfolded and whose windows are of differing sizes, whereby the size of the windows increases in the order of the successively overlapping frame elements. The largest window is the one located furthest from the back.
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