| 摘要 |
A single blank of polypropylene plastic sheet comprises side panels A,B,C and a seat panel D that can be folded into a seat in a first configuration, and folded and locked into a flat transportation state in a second configuration. In the first configuration, the side panels A,B,C are folded together to form a triangular shaped pillar for the seat panel D. The seat panel D has a handle D4 to allow the seat or folded blank to be carried. A locking flap D3 is used to secure the seat panel D and seat panels A,B,C in the folded flat configuration [see page 2 of Figures]. The panels are joined by living hinges formed by U-shaped channels pressed into the surface of the blank. The panels are secured together in the seat configuration by semi-circular tabs and slots A1-A3, C1-C3.
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