| 摘要 |
<p>The invention relates to a foldable flexible bottle (1) comprising a self-enclosed, flexible side wall (2) defining an inside space and forming a body of revolution, a neck (3) arranged to adjoin the side wall of the bottle (1) and having at least one mouth (5), and a base (4) arranged to terminate the bottom of the bottle (1). At least one fold is arranged in the side wall (2) perpendicular to the axis of rotation of the bottle (1). Each fold is constituted by two conical surfaces (8, 9) arranged at an obtuse angle relative to each other, where the conical surfaces (8, 9) are of different size, and adjoin each other along a rim (11). Each fold is connected to neighbouring folds and to the side wall (2) by articulation edges formed from the material of the fold itself. The invention is essentially characterised by that each fold is adapted to be self-retaining in a force- fit manner, and has two stable positions of equilibrium, where the fold may be brought from one stable position of equilibrium to the other by folding the neck (3) and/or the base (4) of the bottle in a direction perpendicular to the axis of rotation, and/or by pushing or pulling the neck (3) or the base in the direction of the axis of rotation, thereby snapping in the smaller-sized conical surface (9) under the larger-sized conical surface (8) or snapping out the smaller-sized conical surface (9) from under the larger-sized conical surface (8) at least along a portion of the rim (11).</p> |
