Circumferential stiffening rib for hot-fill containers
AssigneeAmcor Limited
InventorsRohit Joshi, Michael Lane, Richard Steih
Life of this patent
Estimating the term…
Abstract
A polymer container suitable for hot-filling featuring at least one circumferential rib having a plurality of varying width regions transitioning from a smaller dimension area, to a larger dimension area, to the smaller dimension area. The larger dimension area is adjacent a land area between any two adjacent vacuum panels.
Claims20
A polymer container comprising:
- a neck finish portion suitable for receiving a closure;
- a shoulder portion adjacent said neck finish portion;
- a body portion adjacent said shoulder portion, said body portion having a plurality of vacuum panels formed therein and a land area between any adjacent pair of said vacuum panels;
- a bottom portion adjacent said body portion;
- and
- a circumferential rib adjacent to at least one of said shoulder portion and said bottom portion;
- said circumferential rib defined in part by a plurality of varying width regions which transition from a smaller dimension area, to a larger dimension area, to said smaller dimension area;
- wherein said larger dimension area is adjacent said land area;
- said circumferential rib having a depth at least equal to 25 percent of a width of said smaller dimension area.
A hot-filled polymer container filled with a liquid at an elevated temperature, sealed with a closure, and cooled thereby establishing a slight vacuum within said container, said container comprising:
- a neck finish portion suitable for receiving the closure;
- a shoulder portion adjacent said neck finish portion;
- a body portion adjacent said shoulder portion, said body portion having a plurality of vacuum panels formed therein and a land area between any adjacent pair of said vacuum panels;
- a bottom portion adjacent said body portion;
- and
- a circumferential rib adjacent to at least one of said shoulder portion and said bottom portion;
- said circumferential rib defined in part by a plurality of varying width regions which transition from a smaller dimension area, to a larger dimension area, to said smaller dimension area;
- wherein said larger dimension area is adjacent said land area;
- said circumferential rib having a depth at least equal to 25 percent of a width of said smaller dimension area.
A stretch-molded heat-set polyester container formed within a mold cavity having a temperature of approximately 250° F. to 350° F. (121° C. to 176° C.), said container comprising:
- a neck finish portion suitable for receiving a closure;
- a shoulder portion adjacent said neck finish portion;
- a body portion adjacent said shoulder portion, said body portion having a plurality of vacuum panels formed therein and a land area between any adjacent pair of said vacuum panels;
- a bottom portion adjacent said body portion;
- a first circumferential rib adjacent said shoulder portion and a second circumferential rib adjacent said bottom portion;
- said circumferential ribs defined in part by a plurality of varying width regions which transition from a smaller dimension area, to a larger dimension area, to said smaller dimension area;
- wherein said larger dimension area is adjacent said land area;
- said circumferential ribs having a depth at least equal to 25 percent of a width of said smaller dimension area;
- and
- a generally biaxially oriented molecular structure.
Dependencies are inferred from the claim text.