Abstract: Containers for infusion liquids and methods for making the same are described herein. Aspects of an exemplary container include an extended hollow body, a standing bottom, collapsible side walls and a tapered shoulder region which transforms into a neck. Fold lines (BL) are provided and configured such that they cause portions of the container having the fold lines to be flattened when liquid is removed from the container without venting.

Abstract: The container for infusion liquids comprises an extended hollow body (11), with a standing bottom (20) and a tapered shoulder region (14), which transforms into a neck (15). Should the container be emptied without ventilation the container walls collapse. Fold lines (BL) are provided in the standing bottom (20) and/or the shoulder region (14) at which the container can deform in a defined way, in order that the residual volume remains small. The container can be economically produced and filled by a blowing method, thus requiring a limited air volume and hence offering a good utilisation of the internal volume. Said positive properties render the container suitable for application to pressurised infusions.