Hot-fillable plastic container with flexible base feature
AssigneePlastipak Packaging, Inc.
InventorMarc A. Pedmo
Life of this patent
Estimating the term…
Abstract
A base for a plastic container including an outer support portion; a structured formation ring including a plurality of sequential formations; an inner inversion portion disposed radially inwardly of the structured formation ring; and a central portion. In an embodiment, the sequential formations are disposed in a substantially ring-like configuration and at least the inner inversion portion is configured to flex in response to internal vacuum forces associated with said container.
Claims20
A base for a plastic container comprising:
- an outer support portion;
- a structured formation ring including a plurality of sequential formations, the sequential formations disposed in a substantially ring-like configuration;
- an inner inversion portion disposed radially inwardly of the structured formation ring;
- and
- a central portion;
- wherein at least the inner inversion portion is configured to flex in response to internal vacuum forces associated with said container.
A flexible vacuum-responsive base for a plastic container comprising:
- an outer support portion;
- a structured formation ring including a plurality of sequential formations, the sequential formations disposed in a substantially ring-like configuration;
- an outer inversion portion provided between the outer support portion and the structured formation ring;
- a flat or step portion provided between the outer inversion portion and the structured formation ring;
- an inner inversion portion;
- and
- a central portion.
A base for a plastic container comprising:
- an outer support portion comprising an annular support ring;
- a structured formation ring including a plurality of sequential formations, the sequential formations including a plurality of teeth disposed in a substantially ring-like configuration;
- a flat or step portion provided between the outer support portion and the structured formation ring;
- an inner inversion portion disposed radially inwardly of the structured formation ring;
- and
- a central portion including one or more structural reinforcing formations;
- wherein at least the inner inversion portion is configured to flex in response to internal vacuum forces associated with said container.
Dependencies are inferred from the claim text.