Polymeric material for an insulated container
AssigneeBerry Plastics Corporation
InventorsChris K. Leser, Philip A. Driskill, Charles T. Wallace, John B. Euler, Jason J. Paladino, Milan C. Maravich, Daniel O. Davis, Jeffrey A. Mann, Randy A. Bowlds, Svetlana I. Contrada
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Abstract
A formulation includes a polymeric material, a nucleating agent, a blowing agent, and a surface active agent. The formulation can be used to form a container.
Claims66
A formulation for forming an insulative cellular non-aromatic polymeric structure, the formulation comprising
- a first polymer material comprising at least one high melt strength polypropylene having long chain branching,
- a second polymer material comprising at least one polymer selected from the group consisting of polypropylene, polyethylene, and mixtures thereof,
- at least one nucleating agent, and
- at least one slip agent.
A formulation for forming an insulative cellular non-aromatic polymeric structure, the formulation comprising
- a first polymer material comprising at least one high melt strength polypropylene having a melt strength of at least 36 and a melting temperature of at least 163° C. (325.4° F.),
- a second polymer material comprising at least one polypropylene selected from the group consisting of impact copolymers and high crystalline homopolymers,
- at least one nucleating agent selected from the group consisting of chemical nucleating agents, physical nucleating agents, and combinations and mixtures thereof,
- at least one blowing agent, and
- at least one slip agent comprising a fatty acid or fatty acid-based composition.
A formulation for forming an insulative cellular non-aromatic polymeric structure, the formulation comprising
- a polymer material comprising at least one high melt strength polypropylene,
- at least one nucleating agent selected from the group consisting of chemical nucleating agents, physical nucleating agents, and combinations thereof, and
- at least one slip agent.
A formulation for forming an insulative cellular non-aromatic polymeric structure, the formulation comprising
- a first material comprising at least one high melt strength polypropylene polymer,
- a second material comprising at least one polypropylene selected from the group consisting of impact copolymers and high crystalline homopolymers,
- at least one nucleating agent selected from the group consisting of chemical nucleating agents, physical nucleating agents, and combinations thereof,
- an inert gas, and
- a slip agent.
A formulation for forming an insulative cellular non-aromatic polymeric structure, the formulation comprising
- a first material comprising at least one high melt strength polypropylene having a melt strength of at least 36 and a melting temperature of at least 163° C. (325.4° F.),
- a second material comprising at least one impact copolymer,
- a chemical nucleating agent comprising citric acid or a citric acid-based material, talc,
- a slip agent, and
- carbon dioxide.
A formulation for forming an insulative cellular non-aromatic polymeric structure, the formulation comprising
- a first material comprising a polylactic acid,
- at least one nucleating agent selected from the group consisting of chemical nucleating agents, physical nucleating agents, and combinations thereof,
- at least one blowing agent, and
- at least one slip agent.
A molten resin for forming an insulative cellular non-aromatic polymeric structure, the molten resin comprising
- a first polymer material comprising at least one high melt strength polypropylene having a melt strength of at least 36 and a melting temperature of at least 163° C. (325.4° F.),
- a second polymer material comprising at least one polypropylene selected from the group consisting of impact copolymers and high crystalline homopolymers,
- at least one nucleating agent selected from the group consisting of chemical nucleating agents, physical nucleating agents, and combinations thereof,
- at least one blowing agent comprising at least one composition selected from the group consisting of chemical blowing agents, inert gases, and combinations thereof, and
- at least one slip agent comprising a fatty acid or fatty acid-based composition.
An insulative cellular non-aromatic polymeric extrudate comprising
- a first polymer material comprising at least one high melt strength polypropylene having a melt strength of at least 36 and a melting temperature of at least 163° C. (325.4° F.) and
- a second polymer material comprising at least one polypropylene selected from the group consisting of impact copolymers and high crystalline homopolymers,
- wherein the extrudate has cells formed therein.
An insulative cellular non-aromatic polymeric article comprising
- a first polymer material comprising at least one high melt strength polypropylene having a melt strength of at least 36 and a melting temperature of at least 163° C. (325.4° F.) and
- a second polymer material comprising at least one polypropylene selected from the group consisting of impact copolymers and high crystalline homopolymers,
- wherein the article has cells formed therein.
A container formed from a formulation comprising
- a first material comprising at least one high melt strength polypropylene having a melt strength of at least 36 and a melting temperature of at least 163° C. (325.4° F.),
- a second material comprising at least one polypropylene selected from the group consisting of impact copolymers and high crystalline homopolymers,
- at least one nucleating agent selected from the group consisting of chemical nucleating agents, physical nucleating agents, and combinations thereof,
- a blowing agent, and
- a slip agent selected from the group consisting of erucamide, oleamide, linear low density polyethylenes, and mixtures of at least two thereof.
An insulative cellular non-aromatic polymeric wrapping material formed from a formulation, the formulation comprising
- a first material comprising at least one high melt strength polypropylene having a melt strength of at least 36 and a melting temperature of at least 163° C. (325.4° F.),
- a second material comprising at least one polypropylene selected from the group consisting of impact copolymers and high crystalline homopolymers,
- at least one nucleating agent selected from the group consisting of chemical nucleating agents, physical nucleating agents and combinations thereof,
- at least one blowing agent, and
- a slip agent,
- wherein the wrapping material is formed into a strip that can be wrapped around an object.
A process for forming a structure of insulative cellular non-aromatic polymeric material, the process comprising the steps of
- a. providing a first material comprising at least one high melt strength polypropylene polymer,
- b. providing a second material comprising at least one polypropylene selected from the group consisting of impact copolymers and high crystalline homopolymers,
- c. providing at least one nucleating agent selected from the group consisting of chemical nucleating agents, physical nucleating agents, and combinations thereof,
- d. adding a slip agent,
- e. mixing the materials provided in steps a-d to form a resin mixture,
- f. heating the resin mixture to form a molten resin mixture,
- g. adding a blowing agent to the molten resin mixture to produce an extrusion resin mixture, and
- h. extruding the extrusion resin mixture to form a structure having cells formed therein.
A structure of insulative cellular non-aromatic polymeric material formed by a process, the process comprising the steps of
- a. providing a first material comprising at least one high melt strength polypropylene polymer,
- b. providing a second material comprising at least one polypropylene selected from the group consisting of impact copolymers and high crystalline homopolymers,
- c. providing at least one nucleating agent selected from the group consisting of chemical nucleating agents, physical nucleating agents, and combinations thereof,
- d. adding a slip agent,
- e. mixing the materials provided in steps a-d to form a resin mixture,
- f. heating the resin mixture to form a molten resin mixture,
- g. adding a blowing agent to the molten resin mixture to produce an extrusion resin mixture, and
- h. extruding the extrusion resin mixture to form a structure having cells formed therein.
Dependencies are inferred from the claim text.