Container for infusion liquids
AssigneeB. Braun Melsungen AG
InventorsJoachim Beine, Torsten Dönhoff, Volker Harms, Hans-Otto Maier
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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.
Claims23
A molded container for liquid infusion, said container comprising:
- a plurality of walls including a first side wall and a second side wall, two collapsible walls each disposed in between the first side wall and the second side wall each comprising a longitudinal fold line, a bottom wall comprising a perimeter having at least four perimeter edges configured for standing upright, and a shoulder portion having a port for filling fluid into or discharging fluid out of an interior cavity defined by the plurality of walls;
- wherein the bottom wall comprises an interior wall surface, an exterior wall surface, a lateral fold line intersecting each longitudinal fold line along two of the perimeter edges to define two intersecting fold points and separating the interior wall surface into a first interior section and a second interior section, and at least two transverse fold lines that are angled to one another;
- and
- wherein portions of the first interior section and the second interior section of the bottom wall move closer to one another and wherein portions of the exterior wall surface of the bottom wall move outwardly away from the interior cavity from a first position relative to the interior cavity to a second further outward position relative to the interior cavity when the container collapses.
A method for manufacturing a molded standing container for infusion liquids comprising the steps:
- extruding a preform of a polymer material;
- and
- expanding the preform by blow molding to form the container, the container comprising a plurality of side walls and a bottom wall defining an interior cavity;
- at least two of the side walls each comprising a longitudinal fold line;
- wherein the bottom wall comprises a fold line and a rectangular perimeter attached to the plurality of side walls and wherein the fold line comprises a weakened portion and intersecting the two longitudinal fold lines along a first side and a second side of the perimeter to define two intersecting fold points;
- and
- wherein the bottom wall is configured to fold at the fold line when the container collapses and the fold line moves outwardly away from the interior cavity from a first position relative to the interior cavity to a second further outward position relative to the interior cavity.
A molded container for liquid infusion, said container comprising:
- a plurality of side walls and a bottom wall defining an interior cavity and a shoulder portion of reduced cross-section forming a discharge end, the bottom wall comprising a perimeter having at least four perimeter edges, an exterior surface and an interior surface;
- said plurality of side walls comprising a longitudinal fold line on at least two of the side walls for collapsing the container;
- said bottom wall comprising a plurality of fold lines with at least two of the fold lines angled to one another including one lateral fold line that intersects the two longitudinal fold lines along two of the perimeter edges to define two intersecting fold points;
- wherein when the container collapses, the two intersecting fold points are configured to move inwardly from extended positions to retracted positions and portions of the exterior surface move outwardly away from the interior cavity from a first position relative to the interior cavity to a second further outward position;
- and
- wherein the bottom wall is folded along the plurality of fold lines.
Dependencies are inferred from the claim text.