| CPC B65D 1/0292 (2013.01) [B65D 25/22 (2013.01); B65D 2501/0081 (2013.01)] | 38 Claims |

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1. A collapsible bottle comprising:
a base;
a neck that defines an opening;
a front wall;
a rear wall;
left and right side walls, each of the left and right side walls comprising
a rounded shoulder region that transitions to the neck,
a lower transition region that transitions into the base, and
a central region positioned between the rounded shoulder region and the lower transition region, the central region comprising a first panel and a second panel, the first and second panels being divided by a substantially vertical central hinge,
the first panel being divided from the front wall by a front hinge, and
the second panel being divided from the rear wall by a rear hinge;
wherein, when pressure is placed on the front and rear walls of the bottle, the front hinge line flexes inward, the rear hinge line flexes inward, and the central hinge flexes outward, such that the front and rear walls collapse toward one another with the central hinge being pushed outward away from the front and rear walls;
wherein the first panel is angled inward from the central hinge toward the front hinge and the second panel is angled inward from the central hinge toward the rear hinge; and
wherein the angle formed between the first and second panels by the central hinge is between about 140 degrees and about 175 degrees.
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