Container and method for blowmolding a base in a partial vacuum pressure reduction setup
AssigneeGraham Packaging Company, L.P.
InventorGregory Trude
Life of this patent
Estimating the term…
Abstract
A base of a container may include a standing surface, a first wall, a second wall, a first hinge, and a second hinge. The first hinge may be positioned between the standing surface and the first wall, the first wall being rotateable about the first hinge relative to a longitudinal axis of the container. The second hinge may be positioned between the first wall and the second wall, the second wall being rotateable about the second hinge relative to the longitudinal axis of the container, where rigidity of the base prevents substantial net distortion of the base during rotation of the second wall.
Claims18
A method comprising:
- blow molding a container, a base of the container having a first hinge, a first wall coupled to said first hinge, a second hinge directly coupled to said first wall, and a second wall coupled to said second hinge, both of said first wall and said second wall being formed extending away from an interior of said container relative to a longitudinal axis of said container;
- inverting said first wall about said first hinge toward the interior of said container relative to the longitudinal axis;
- and
- after said inverting said first wall, inverting said second wall about said second hinge toward the interior of said container relative to the longitudinal axis,
- wherein rigidity of said base prevents substantial net distortion of said base during inversion of said second wall, and
- wherein said inverting said first wall is performed prior to filling the container.
A method comprising:
- blow molding a container in a first stage, a base of the container having a first hinge, a first wall coupled to said first hinge, a second hinge directly coupled to said first wall, and a second wall coupled to said second hinge, both of said first wall and said second wall being formed extending away from an interior of said container relative to a longitudinal axis of said container;
- inverting, in a second stage, said first wall about said first hinge toward the interior of said container relative to the longitudinal axis;
- and
- after said inverting in said second stage, inverting, in a third stage, said second wall about said second hinge toward the interior of said container relative to the longitudinal axis, wherein rigidity of said base prevents substantial net distortion of said base during inversion of said second wall,
- wherein said second stage is performed prior to hot-filling the container, and
- wherein said third stage is performed after hot-filling, capping, and cooling the container.
A method comprising:
- blow molding a container, a base of the container having a first hinge, a first wall coupled to said first hinge, a second hinge coupled to said first wall, and a second wall coupled to said second hinge, both of said first wall and said second wall being formed extending away from an interior of said container relative to a longitudinal axis of said container;
- inverting said first wall about said first hinge toward the interior of said container relative to the longitudinal axis;
- and
- inverting said second wall about said second hinge toward the interior of said container relative to the longitudinal axis, wherein rigidity of said base prevents substantial net distortion of said base during inversion of said second wall,
- wherein said base further comprises:
- a third hinge coupled to said second wall;
- and
- a section coupled to said third hinge, wherein said section rotates about said third hinge during inversion of said second wall.
Dependencies are inferred from the claim text.