| 摘要 |
<p>A folding jigsaw puzzle sheet includes two hard plastic sheet elements (1, 2) connected by a flexible plastic slice (3) with a certain width. The flexible plastic slice (3) is positioned between the two sheet elements (1, 2). The width of the flexible plastic slice (3) is less than the side length of each sheet element (1, 2), so the shape of the folding jigsaw puzzle sheet is 'H'. The folding jigsaw puzzle sheet has a good folded angle.</p> |
