| 摘要 |
In a foldable bottle, two lines of the outer surface located opposite one another are provided as folding lines. Each of these folding lines intersects a bead-type lower folding line, running round transversely to the folding line, at a point of intersection, and intersects a bead-type upper folding line, running round transversely to the folding line, at a point of intersection. Below the point of intersection, each folding line branches into two bead-type folding lines which are arranged in a V-shape and continue from the lower portion of the bottle down to the bottom surface. Above the point of intersection, each folding line branches into two bead-type folding lines which are arranged in a V-shape and extend in the upper portion of the bottle up to the top surface. When the outer surface is folded flat between the folding lines to form a two-ply layer, the upper portion an the lower portion can be folded flat simultaneously on the principle of a folding bottom, as with paper bags. Subsequently, the upper and lower portions can be folded over through 90 DEG and placed against the other bottle parts which have been folded flat.
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