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US 12,145,303 B2Granted
Polymeric material for container
AssigneeBerry Plastics Corporation
InventorsDavid Dezhou Sun, Philip A. Driskill, Tony Cain, Diane E. Marret, Debra R. Wilson, Timothy Ponrathnam
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Abstract
A formulation for producing a polymeric material including high-density polyethylene, a chemical blowing agent, and other optional components is described.
Claims13
A container comprising:
- a floor and
- a container wall extending away from the floor, and the container wall and the floor cooperate to form an interior product storage region,
- wherein the container wall is formed of a multi-layer material including a first layer of an insulative cellular non-aromatic polymeric material comprising high density polyethylene and a second layer comprising high density polyethylene and in contact with an outer surface of the first layer to locate the insulative cellular non-aromatic polymeric material between the second layer and the interior product-storage region,
- wherein the first layer is extruded and the second layer is extruded on the first layer to cause the first layer and the second layer to contact one another,
- wherein the container has a density less than about 0.4 g/cm3.
2 more elements
A container comprising:
- a floor and
- a container wall extending away from the floor, and the container wall and the floor cooperate to form an interior product storage region,
- wherein the container wall is formed of a multi-layer material including a first layer of an insulative cellular non-aromatic polymeric material comprising high density polyethylene and a second layer arranged to locate the insulative cellular non-aromatic polymeric material between the second layer and the interior product-storage region, and
- wherein the insulative cellular non-aromatic polymeric material comprises regrind of previously prepared containers.
1 more element
A method of producing a container, the method comprising:
- extruding a first layer of an insulative cellular non-aromatic polymeric material comprising high density polyethylene,
- extruding a second layer onto an outer surface of the first layer to contact the first layer to form a multilayer material, the second layer comprising high-density polyethylene, and
- forming a container from the multilayer material,
- wherein the container has a floor, a container wall extending away from the floor and the container wall and the floor cooperate to form an interior product storage region,
- wherein the container has a density less than about 0.4 g/cm3.
2 more elements
Dependencies are inferred from the claim text.