Base for hot-fill plastic containers
AssigneeGraham Packaging Company, L.P.
InventorMichael P. Wurster
Life of this patent
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Abstract
A base structure for a blow-molded container having an annular sidewall and a central longitudinal axis, the base structure comprising: a bottom portion; an annular support heel positioned between the sidewall and the bottom portion, wherein the annular support heel is angled inwardly at an angle θ of from about 15° to about 65° relative a plane extending from the sidewall; and a plurality of partial sphere structures on the annular support heel and extending beyond the bottom portion thus forming a contact surface supporting the container, and wherein the blow-molded container comprises a material selected from the group consisting of a polyester resin and polypropylene.
Claims25
A base structure for a blow-molded container having an annular sidewall and a central longitudinal axis, the base structure comprising:
- a bottom portion;
- an annular support heel positioned between the sidewall and the bottom portion, wherein the annular support heel is angled inwardly at an angle θ of from about 15° to about 65° relative a plane extending from the sidewall;
- and
- a plurality of partial sphere structures on the annular support heel and extending beyond the bottom portion thus forming a contact surface supporting the container, and
- wherein the blow-molded container comprises a material selected from the group consisting of a polyester resin and polypropylene.
A base structure for a blow-molded container having an annular sidewall and a central longitudinal axis, the base structure comprising:
- a bottom portion;
- an annular support heel positioned between the sidewall and the bottom portion, wherein the annular support heel is angled inwardly at an angle θ of from about 15° to about 65° relative a plane extending from the sidewall;
- and
- a plurality of partial sphere structures on the annular support heel and extending beyond the bottom portion thus forming a contact surface supporting the container, and
- wherein the blow-molded container comprises poly(ethylene)terephthalate (PET).
Dependencies are inferred from the claim text.