Containers formed of polyolefin resin
AssigneeAmcor Rigid Packaging USA, LLC
InventorsGregory CARPENTER, Theodore TEKIP, Kirk Edward MAKI, Mark Orson BLYSTONE
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Abstract
A preform configured to form a container when the preform is seated in a cavity of a mold and the preform is expanded within the cavity of the mold by introducing an incompressible fluid under a blow pressure into the preform to stretch the preform to assume a shape of the surrounding cavity. The preform includes a high-density polyethylene (HDPE) resin having: a melt flow index of between 0.3 and 10.0 grams per 10 minutes at a temperature of 190° C. under 2.16 kilograms of load through a test fixture of ASTM D1238; a polydispersity index of 4-24; and a density of between 0.943 and 0.965 grams per cubic centimeter.
Claims19
A preform configured to form a container when the preform is seated in a cavity of a mold and is expanded within the cavity of the mold by introducing an incompressible fluid under a blow pressure into the preform to stretch the preform to assume a shape of the surrounding cavity, the preform comprising:
- a high-density polyethylene (HDPE) resin having:
- a melt flow index of 0.3-10.0 grams per 10 minutes at a temperature of 190° C. under 2.16 kilograms of load through an extrusion plastometer test fixture with die orifice diameter of 2.0955 mm and length of 8.000 mm;
- a polydispersity index of 4-24;
- and
- a density of between 0.943 and 0.965 grams per cubic centimeter.
Dependencies are inferred from the claim text.