초록 ▼

A collapsible or foldable plastic bottle of circular bellows like configuration capable of manufacture on current plastic bottle manufacturing equipment with current plastic materials approved for contact with foods and beverages. The bellows over center and fold to retain the folded condition witho

A collapsible or foldable plastic bottle of circular bellows like configuration capable of manufacture on current plastic bottle manufacturing equipment with current plastic materials approved for contact with foods and beverages. The bellows over center and fold to retain the folded condition without external assistance thus providing a self-latching feature. In particular, the bellows of the bottle, when fully folded, cause the bottle to substantially fit within a cup fastened to the base of the bottle. The cup is generally formed by further extending the cup upward and increasing the diameter slightly in comparison with the reinforcing cup on current soda pop bottles.

대표청구항 ▼

A collapsible plastic bottle having a top and a base joined by a substantially cylindrical side wall integral therewith and an aperture in the top, the improvement comprising a plurality of circular bellows formed by conical sections integrally joined to create at least a portion of the bottle side

A collapsible plastic bottle having a top and a base joined by a substantially cylindrical side wall integral therewith and an aperture in the top, the improvement comprising a plurality of circular bellows formed by conical sections integrally joined to create at least a portion of the bottle side wall, the conical sections comprising alternating short portions and long portions, said short portions being at a greater angle to the bottle axis than said long portions, and the lesser diameter junctures of the long portions with the short portions being formed with a wall thickness less than the side thickness of the portions to create fold rings for the circular bellows.