The invention is a foldable polygonal container, with double walls (at least three), which is made of a continuous sheet of material (without connections), in which perforation lines are impressed, which may be folded along these lines and thus create a non-leaking container. The foldable container can be used as a glass, cup, bowl, bucket, flowerpot etc. - depending on its shape, size and the materials from which it is made. The invention incorporates the following advantages: 1) compactness; 2) ease of use; 3) liquid leakage resistance; 4) a simple, common and cheap production technique; In any event, the main advantage of the invention is its compactness: while folded or in a state of a widespread sheet, its thickness may not exceed that of a thick paper and thus saves a considerable storage space.
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