Polymeric material for an insulated container
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
E04B-001/78
C08L-023/10
C08L-023/12
C08L-023/04
C08L-023/06
C08J-009/00
C08J-009/06
C08J-009/12
B32B-033/00
B65D-001/40
B32B-001/08
B32B-001/02
B29D-022/00
B29D-023/00
C08J-009/04
C08L-023/08
C08L-023/14
출원번호
US-0491327
(2012-06-07)
등록번호
US-8883280
(2014-11-11)
발명자
/ 주소
Leser, Chris K.
Driskill, Philip A.
Wallace, Charles T.
Euler, John B.
Paladino, Jason J.
Maravich, Milan C.
Davis, Daniel O.
Mann, Jeffrey A.
Bowlds, Randy A.
Contrada, Svetlana I.
출원인 / 주소
Berry Plastics Corporation
대리인 / 주소
Barnes & Thornburg LLP
인용정보
피인용 횟수 :
24인용 특허 :
179
초록
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.
대표청구항▼
1. 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 g
1. 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, andat least one slip agent. 2. The formulation of claim 1, wherein the first material is a homopolymer. 3. The formulation of claim 1, wherein the first polymer material has a melt strength of at least 36 per ISO16790. 4. The formulation of claim 1, wherein the first polymer material has a melting temperature of at least 163° C. (325.4° F.). 5. The formulation of claim 1, wherein the second polymer material comprises a polyethylene-based material selected from the group consisting of low density polyethylene, linear low density polyethylene, high density polyethylene, ethylene-vinyl acetate copolymers, ethylene-ethylacrylate copolymers, ethylene-acrylic acid copolymers, and mixtures and combinations thereof. 6. The formulation of claim 1, wherein the nucleating agent is at least one material selected from the group consisting of chemical nucleating agents, physical nucleating agents, and mixtures and combinations thereof. 7. The formulation of claim 1, wherein the nucleating agent is citric acid or a citric acid-based material. 8. The formulation of claim 1, wherein the nucleating agent is at least one material selected from the group consisting of talc, CaCO3, mica, and mixtures of at least two of the foregoing. 9. The formulation of claim 1, wherein the blowing agent is at least one material selected from the group consisting of chemical blowing agents, physical blowing agents, and combinations thereof. 10. The formulation of claim 1, wherein the blowing agent is at least one material selected from the group consisting of azodicarbonamide; azodiisobutyro-nitrile; benzenesulfonhydrazide; 4,4-oxybenzene sulfonylsemicarbazide; p-toluene sulfonyl semi-carbazide; barium azodicarboxylate; N,N′-dimethyl-N,N′-dinitrosoterephthalamide; trihydrazino triazine; methane; ethane; propane; n-butane; isobutane; n-pentane; isopentane; neopentane; methyl fluoride; perfluoromethane; ethyl fluoride; 1,1-difluoroethane; 1,1,1-trifluoroethane; 1,1,1,2-tetrafluoro-ethane; pentafluoroethane; perfluoroethane; 2,2-difluoropropane; 1,1,1-trifluoropropane; perfluoropropane; perfluorobutane; perfluorocyclobutane; methyl chloride; methylene chloride; ethyl chloride; 1,1,1-trichloroethane; 1,1-dichloro-1-fluoroethane; 1-chloro-1,1-difluoroethane; 1,1-dichloro-2,2,2-trifluoroethane; 1-chloro-1,2,2,2-tetrafluoroethane; trichloromonofluoromethane; dichlorodifluoromethane; trichlorotrifluoroethane; dichlorotetrafluoroethane; chloroheptafluoropropane; dichlorohexafluoropropane; methanol; ethanol; n-propanol; isopropanol; sodium bicarbonate; sodium carbonate; ammonium bicarbonate; ammonium carbonate; ammonium nitrite; N,N′-dimethyl-N,N′-dinitrosoterephthalamide; N,N′-dinitrosopentamethylene tetramine; azobisisobutylonitrile; azocyclohexylnitrile; azodiaminobenzene; benzene sulfonyl hydrazide; toluene sulfonyl hydrazide; p,p′-oxybis(benzene sulfonyl hydrazide); diphenyl sulfone-3,3′-disulfonyl hydrazide; calcium azide; 4,4′-diphenyl disulfonyl azide; and p-toluene sulfonyl azide. 11. The formulation of claim 1, wherein the slip agent is at least one fatty acid or fatty-acid based material. 12. The formulation of claim 1, wherein the slip agent is at least one material selected from the group consisting of erucamide, oleamide, and mixtures thereof. 13. The formulation of claim 1, further comprising at least one material selected from the group consisting of impact modifiers, colorants, blowing agents, compound regrind, and mixtures of at least two of the foregoing. 14. The formulation of claim 1, further comprising a colorant. 15. The formulation of claim 1, wherein the structure has an average cell size in the machine direction of length of about 0.016 inches (0.4064 mm) and width of about 0.003 inches (0.0762 mm), and an average cell size in the transverse direction of length of about 0.017 inches (0.4318 mm) and width of about 0.003 inches (0.0762 mm). 16. The formulation of claim 1, wherein the structure has cells having an average cell aspect ratio in at least one direction in a range of about 1.0 to about 3.0. 17. The formulation of claim 1, wherein the structure has cells having an average cell aspect ratio in at least one direction in a range of about 1.0 to about 2.0. 18. The formulation of claim 1, wherein the structure has a melting temperature of between about 160° C. (320° F.) and about 172° C. (341.6° F.), a crystallization temperature between about 108° C. (226.4° F.) and about 135° C. (275° F.), and percent crystallinity between about 42% and about 62% at 10 degrees per minute heating and cooling rate. 19. The formulation of claim 1, wherein the structure has a melting temperature of about 162° C. (323.6° F.), crystallization temperature of about 131° C. (267.8° F.), and crystallinity degree of about 46% at 10 degrees per minute heating and cooling rate. 20. The formulation of claim 1, wherein the insulative cellular non-aromatic polymeric structure has a density in a range of about 0.01 g/cm3 to about 0.19 g/cm3. 21. The formulation of claim 1, wherein the insulative cellular non-aromatic polymeric structure has a density in a range of about 0.05 g/cm3 to about 0.19 g/cm3. 22. The formulation of claim 1, wherein the insulative cellular non-aromatic polymeric structure has a density in a range of about 0.1 g/cm3 to about 0.185 g/cm3. 23. The formulation of claim 1, wherein the structure can be exposed to microwave energy of about 1,200 watts for up to about 2.5 minutes without visible burning or scorching. 24. The formulation of claim 1, wherein the structure has a wall thickness of about 0.089 inches (2.2606 mm) and a density of about 0.1902 g/cm3, and a rigidity in a range of about 0.545 kilograms-force (kg-F) to about 0.716 kilograms-force (kg-F). 25. The formulation of claim 1, wherein the material has an average puncture resistance of up to about 15,210 grams-force according to the Slow Puncture Resistance Test Method as described in ASTM D3763-86. 26. The formulation of claim 1, wherein the structure has a tear resistance in the machine direction of at least about 282 grams-force according to ASTM D1922-93. 27. The formulation of claim 1, wherein the structure requires at least about 282 grams-force to tear the material in the machine direction according to Elmendorf test method ASTM D1922-93. 28. The formulation of claim 1, wherein the structure requires at least about 212 grams-force to tear the material in the transverse direction according to Elmendorf test method as described in ASTM D1922-93. 29. The formulation of claim 1, wherein the structure requires a force in a range of about 213 grams-force to about 351 grams-force to tear the material in the machine direction according to Elmendorf test method ASTM D1922-93. 30. The formulation of claim 1, wherein the structure requires a force in a range of about 143 grams-force to about 281 grams-force to tear the material in the transverse direction according to Elmendorf test method ASTM D1922-93. 31. The formulation of claim 1, wherein the structure, when formed into a cup, has a maximum exterior surface temperature of about 140.5° F. (60.28° C.) when the cup is filled with a liquid at about 200° F. (93.33° C.) and a lid is placed on the cup. 32. The formulation of claim 1, wherein the structure when formed into a strip has a mean thermal conductivity of about 0.05792 W/m-K at 21° C. with a standard deviation of about 0.00005 W/m-K at 21° C. 33. The formulation of claim 1, wherein the structure when formed into a strip has a mean thermal conductivity of about 0.06680 W/m-K at 93° C. with a standard deviation of about 0.00025 W/m-K at 93° C. 34. The formulation of claim 1, wherein the structure is recyclable. 35. The formulation of claim 1, wherein the structure can accept printing of graphics on at least one surface thereof. 36. The formulation of claim 1, further comprising at least one blowing agent. 37. The formulation of claim 36, wherein the at least one blowing agent is introduced and mixed into the formulation before the formulation is molten. 38. The formulation of claim 37, wherein the blowing agent is at least one gas that is introduced as a pressurized liquid. 39. The formulation of claim 38, wherein the blowing agent is at least one gas selected from the group consisting of carbon dioxide, nitrogen, helium, argon, air, pentane, butane or other alkane, and mixtures thereof. 40. The formulation of claim 36, wherein the blowing agent is a chemical blowing agent that reacts or decomposes to release a gas. 41. The formulation of claim 40, wherein the chemical blowing agent is CaCO3. 42. The formulation of claim 40, wherein the nucleating agent further comprises a catalyst. 43. The formulation of claim 42, wherein the structure has an average cell size in the machine direction of length of about 0.016 inches and width of about 0.003 inches and an average cell size in the transverse direction of length of about 0.017 inches and width of about 0.003 inches. 44. 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, andat least one slip agent comprising a fatty acid or fatty acid-based composition. 45. 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, andat least one slip agent. 46. 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, anda slip agent. 47. 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, andcarbon dioxide. 48. The formulation of claim 47, further comprising titanium dioxide. 49. 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, andat least one slip agent. 50. The formulation of claim 49, wherein the polylactic acid is derived from corn starch. 51. 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, andat least one slip agent comprising a fatty acid or fatty acid-based composition. 52. 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.) anda 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. 53. 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.) anda 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. 54. 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, anda slip agent selected from the group consisting of erucamide, oleamide, linear low density polyethylenes, and mixtures of at least two thereof. 55. The container of claim 54, wherein the container includes a wall thickness of about 0.089 inches (2.2606 mm) and a density of about 0.1902 g/cm3 and has an unfilled unlidded rigidity in a range of about 0.545 kilograms-force to about 0.716 kilograms-force. 56. The container of claim 54, wherein the container includes a wall thickness of 0.089 inches (2.2606 mm) and a density of 0.1902 g/cm3 and has an unfilled lidded rigidity in a range of about 0.680 kilograms-force to about 1.011 kilograms-force. 57. The container of claim 54, wherein the container includes a wall thickness of about 0.089 inches (2.2606 mm) and a density of about 0.1902 g/cm3 and has a hot filled unlidded rigidity in a range of about 0.238 kilogram-force (kg-F) to about 0.324 kilogram-force (kg-F) at about 200° F. (93.33° C.). 58. The container of claim 54, wherein the container includes a wall thickness of about 0.089 inches (2.2606 mm) and a density of about 0.1902 g/cm3 and has a hot filled lidded rigidity in a range of about 0.227 kilogram-force (kg-F) to about 0.476 kilogram-force (kg-F) about 200° F. (93.33° C.). 59. The container of claim 54, wherein the container includes a wall thickness of about 0.089 inches (2.2606 mm) and a density of about 0.1902 g/cm3 and has a cold filled unlidded rigidity in a range of about 0.698 kilogram-force (kg-F) to about 0.894 kilogram-force (kg-F) at about 35° F. (1.67° C.). 60. The container of claim 54, wherein the container includes a wall thickness of about 0.089 inches (2.2606 mm) and a density of about 0.1902 g/cm3 and has a cold filled lidded rigidity in a range of about 0.837 kilogram-force (kg-F) to about 1.192 kilogram-force (kg-F) at about 35° F. (1.67° C.). 61. 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, anda slip agent,wherein the wrapping material is formed into a strip that can be wrapped around an object. 62. The formulation of claim 61, wherein the strip is rolled to form a roll. 63. The formulation of claim 61, further comprising an adhesive associated with at least one surface of the strip. 64. The formulation of claim 63, further comprising a release liner. 65. 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, andh. extruding the extrusion resin mixture to form a structure having cells formed therein. 66. 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, andh. extruding the extrusion resin mixture to form a structure having cells formed therein.
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이 특허에 인용된 특허 (179)
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Leser, Chris K.; Wallace, Charles T.; Driskill, Philip A.; Euler, John B.; Paladino, Jason J.; Maravich, Milan C.; Davis, Daniel O.; Mann, Jeffrey A., Insulated sleeve for a cup.
Leser, Chris K; Wallace, Charles T; Driskill, Philip A; Euler, John B; Paladino, Jason J; Maravich, Milan C; Davis, Daniel O; Bowlds, Randy A; Mann, Jeffrey A, Insulative container.
Leser, Chris K; Wallace, Charles T; Driskill, Philip A; Euler, John B; Paladino, Jason J; Maravich, Milan C; Davis, Daniel O; Mann, Jeffrey A; Bowlds, Randy A., Insulative container.
Leser, Chris K; Driskill, Philip A; Wallace, Charles T; Euler, John B; Paladino, Jason J; Maravich, Milan C; Davis, Daniel O; Mann, Jeffrey A; Bowlds, Randy A; Contrada, Svetlana I, Polymeric material for an insulated container.
Leser, Chris K; Driskill, Philip A; Wallace, Charles T; Euler, John B; Paladino, Jason J; Maravich, Milan C; Davis, Daniel O; Mann, Jeffrey A; Bowlds, Randy A; Contrada, Svetlana I, Polymeric material for an insulated container.
Leser, Chris K; Driskill, Philip A; Wallace, Charles T; Euler, John B; Paladino, Jason J; Maravich, Milan C; Davis, Daniel O; Mann, Jeffrey A; Bowlds, Randy A; Contrada, Svetlana I; Sun, David Dezhou, Polymeric material for an insulated container.
Leser, Chris K; Driskill, Philip A; Wallace, Charles T; Euler, John B; Paladino, Jason J; Maravich, Milan C; Davis, Daniel O; Mann, Jeffrey A; Bowlds, Randy A; Contrada, Svetlana I; Sun, David Dezhou, Polymeric material for an insulated container.
Leser, Chris K; Wallace, Charles T; Driskill, Philip A; Euler, John B; Paladino, Jason J; Maravich, Milan C; Davis, Daniel O; Mann, Jeffrey A; Bowlds, Randy A; Contrada, Svetlana, Process for forming an insulated container having artwork.
Leser, Chris K; Wallace, Charles T; Driskill, Philip A; Euler, John B; Paladino, Jason J; Maravich, Milan C; Davis, Daniel O; Mann, Jeffrey A; Bowlds, Randy A; Contrada, Svetlana I, Process for forming an insulated container having artwork.
Leser, Chris K; Wallace, Charles T; Driskill, Philip A; Euler, John B; Paladino, Jason J; Maravich, Milan C; Davis, Daniel O; Mann, Jeffrey A; Bowlds, Randy A; Contrada, Svetlana I, Process for forming an insulated container having artwork.
Leser, Chris K; Wallace, Charles T; Driskill, Philip A; Euler, John B; Paladino, Jason J; Maravich, Milan C; Davis, Daniel O; Mann, Jeffrey A; Bowlds, Randy A; Contrada, Svetlana I, Process for forming an insulated container having artwork.
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