Polyolefin resins for containers
AssigneeLiquiForm Group LLC
InventorsGregory Carpenter, Theodore Tekip, Kirk Maki, Mark Blystone
Life of this patent
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Abstract
A high-density polyethylene (HDPE) resin configured to be molded into a preform that can be biaxially expanded within a cavity of a container mold by introducing an incompressible fluid under pressure into the preform to stretch the preform to assume a shape of a surrounding mold cavity of the container mold. The HDPE resin has: 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; a polydispersity index of 4-24; and a density of 0.943-0.965 grams per cubic centimeter.
Claims15
A process for simultaneously forming and filling a container, the process comprising:
- providing a preform comprising a high-density polyethylene (HDPE) resin in a mold cavity of a container mold wherein the HDPE resin has
- 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 0.943-0.965 grams per cubic centimeter;
- and
- introducing an incompressible fluid under pressure into the preform to stretch the preform into a container filled with the incompressible fluid, the container having a shape of the mold cavity of the container mold.
Dependencies are inferred from the claim text.