초록

An oxygen-scavenging multi-layer container and methods of making, controlling, and using the same are disclosed.

대표청구항 ▼

1. A multi-layer container comprising: an outer layer comprising crystalline polyethylene terephthalate (CPET),an inner layer, andat least one middle layer interposed therebetween;the middle layer including a blend of: at least one oxygen-scavenging component, at least one catalyst-containing concen

1. A multi-layer container comprising: an outer layer comprising crystalline polyethylene terephthalate (CPET),an inner layer, andat least one middle layer interposed therebetween;the middle layer including a blend of: at least one oxygen-scavenging component, at least one catalyst-containing concentrate, and a polymer consisting essentially of polyethylene terephthalate (PET);wherein the middle layer contains at least one catalyst transition metal up to about 3%, by weight, of the multi-layer container; andwherein substantially no adhesive material is interposed between the middle layer and the outer layer and/or the inner layer. 2. The multi-layer container of claim 1, wherein the catalyst-containing concentrate depends on the ability to co-process eco extrusion or co injection) with the scavenging component. 3. The multi-layer container of claim 1, wherein the catalyst-containing concentrate includes a transition metal selected from cobalt, copper, rhodium, ruthenium, palladium, tungsten, osmium, cadmium, silver, tantalum, hafnium, vanadium, titanium, chromium, nickel, zinc, and manganese. 4. The multi-layer container of claim 1, wherein the catalyst-containing concentrate includes a transition metal in the form of a salt. 5. The multi-layer container of claim 1, wherein the catalyst-containing concentrate includes a transition metal in the form of a salt, and wherein counter ions for the metal include one or more of carboxylates, including neodecanoates, octanoates, stearates, acetates, naphthalates, lactates, maleates, acetylacetonates, linoleates, oleates, palminates, 2-ethyl hexanoates, oxides, borides, carbonates, chlorides, dioxides, hydroxides, nitrates, phosphates, sulfates, and silicates. 6. The multi-layer container of claim 1, wherein the catalyst-containing concentrate includes at least one of cobalt stearate or cobalt acetate that is present in a total concentration not exceeding about 3%, by weight, of the multi-layer container. 7. The multi-layer container of claim 1, wherein the catalyst-containing concentrate comprises an oxidation catalyst blended with PET. 8. The multi-layer container of claim 1, wherein a ratio of oxygen-scavenging component to catalyst-containing concentrate is about 5:95. 9. The multi-layer container of claim 1, wherein a ratio of oxygen-scavenging component to catalyst-containing concentrate is about 10:90. 10. The multi-layer container of claim 1, wherein a ratio of oxygen-scavenging component to catalyst-containing concentrate is about 20:80. 11. The multi-layer container of claim 1, wherein a ratio of oxygen-scavenging component to catalyst-containing concentrate is about 30:70. 12. The multi-layer container of claim 1, wherein a ratio of oxygen-scavenging component to catalyst-containing concentrate is about 40:60. 13. The multi-layer container of claim 1, wherein a ratio of oxygen-scavenging component to catalyst-containing concentrate is about 50:50. 14. The multi-layer container of claim 1, wherein a ratio of oxygen-scavenging component to catalyst-containing concentrate is about 60:40. 15. The multi-layer container of claim 1, wherein a total concentration of oxygen-scavenging component in the middle layer is at least about 10%, by weight, of the multi-layer container. 16. The multi-layer container of claim 1, wherein a total concentration of oxygen-scavenging component in the middle layer is at least about 5%, by weight, of the multi-layer container. 17. The multi-layer container of claim 1, wherein a total concentration of oxygen-scavenging component in the middle layer is at least about 3%, by weight, of the multi-layer container. 18. The multi-layer container of claim 1, wherein a total concentration of oxygen-scavenging component in the middle layer is at least about 2%, by weight, of the multi-layer container. 19. The multi-layer container of claim 1, wherein a total concentration of oxygen-scavenging component in the middle layer is at least about 1%, by weight, of the multi-layer container. 20. The multi-layer container of claim 1, wherein the outer layer of the multi-layer container has an oxygen permeation rate of no greater than about 3 cc O2/100 in2·day·atm. 21. The multi-layer container of claim 1, wherein the outer layer of the multi-layer container has an oxygen permeation rate of no greater than about 2 cc O2/100 in2·day·atm. 22. The multi-layer container of claim 1, wherein the outer layer of the multi-layer container has an oxygen permeation rate of no greater than about 1.5 cc O2/100 in2·day·atm. 23. The multi-layer container of claim 1, wherein the outer layer of the multi-layer container has an oxygen permeation rate of no greater than about 1 cc O2/100 in2·day·atm. 24. The multi-layer container of claim 1, wherein the outer layer of the multi-layer container has an oxygen permeation rate of no greater than about 0.5 cc O2/100 in2·day·atm. 25. The multi-layer container of claim 1, wherein the outer layer of the multi-layer container has an oxygen permeation rate of no greater than about 0 cc O2/100 in2·day·atm. 26. The multi-layer container of claim 1, wherein the outer layer of the multi-layer container has an oxygen permeation rate of less than about 0 cc O2/100 in2·day·atm. 27. The multi-layer container of claim 1, wherein the multi-layer container has an oxygen headspace absorption effect of about 0 cc O2 ingress after about 5 days. 28. The multi-layer container of claim 1, wherein the multi-layer container has an oxygen headspace absorption effect of less than about 0 cc O2 ingress after about 5 days. 29. The multi-layer container of claim 1, wherein the multi-layer container has an oxygen headspace absorption effect of more than about 0.3% headspace oxygen reduction after about 20 days. 30. The multi-layer container of claim 1, wherein the multi-layer container has an oxygen absorption effect that increases over time after about 5 days after manufacturing of the multi-layer container. 31. The multi-layer container of claim 1, wherein the middle layer has an oxygen-scavenging component to catalyst-containing concentrate ratio of greater than about 0.05. 32. The multi-layer container of claim 1, wherein the catalyst-containing concentrate includes one or more oxidation catalysts. 33. The multi-layer container of claim 32, wherein the catalyst-containing concentrate depends on the scavenging component. 34. A multi-layer container comprising: an outer layer comprising crystalline polyethylene terephthalate (CPET),an inner layer, andat least one middle layer interposed therebetween;the middle layer including a blend of: at least one oxygen-scavenging component, at least one catalyst-containing concentrate, and a polymer consisting essentially of polyethylene terephthalate (PET); wherein the middle layer contains at least one catalyst transition metal up to about 3%, by weight, of the multi-layer container;the multi-layer container having:i) a ratio of oxygen-scavenging component to catalyst-containing concentrate of about 5:95;ii) a total concentration of oxygen-scavenging component in the middle layer of at least about 0.5%, by weight, of the multi-layer container;iii) an oxygen permeation rate of the outer layer no greater than about 3 cc O2/100 in2·day·atm;iv) an oxygen headspace absorption effect of about 0 cc O2 ingress after about 5 days; andv) an oxygen absorption effect of that increases over time after about 5 days after manufacturing of the multi-layer container;wherein substantially no adhesive material is interposed between the middle layer and the outer layer and/or the inner layer. 35. The multi-layer container of claim 34, wherein the inner layer comprises a crystalline poly(ethylene terephthalate) polymer (CPET). 36. The multi-layer container of claim 34, wherein the percentage of crystallinity of the CPET is varied, depending on barrier properties and heat resistance properties desired. 37. The multi-layer container of claim 34, wherein at least one of the outer layer and the inner layer is at least about 1 to about 1.5 mils in thickness. 38. The multi-layer container of claim 34, wherein the middle layer is present in an amount of at least about 1%, by weight, of the multi-layer container. 39. The multi-layer container of claim 34, wherein the outer layer has a thickness of about 1 mil or more. 40. The multi-layer container of claim 34, wherein the middle layer has an oxygen-scavenging component to catalyst-containing concentrate ratio of greater than about 0.05. 41. The multi-layer container of claim 34, wherein a ratio of the oxygen-scavenging component to catalyst-containing concentrate in the middle layer is about a 50:50 ratio. 42. The multi-layer container of claim 34, wherein the container has an oxygen absorption of about 50 cc O2, per gram of oxygen-scavenging component present in the multi-layer container. 43. The multi-layer container of claim 34, wherein the oxygen-scavenging component present is at least about 0.5% or greater, by weight, of the multi-layer container. 44. The multi-layer container of claim 34, wherein the oxygen-scavenging component present is at least about 2% or greater, by weight, of the multi-layer container. 45. The multi-layer container of claim 34, wherein the oxygen-scavenging component is present at about 2% or less, by weight, of the multi-layer container. 46. The multi-layer container of claim 34, wherein at least one inner layer comprises an amorphous poly(ethylene terephthalate) polymer (APET). 47. The multi-layer container of claim 34, wherein at least one inner layer comprises an amorphous poly(ethylene terephthalate) polymer (APET) having a thickness of about 1 mil or more. 48. The multi-layer container of claim 34, wherein the blend of the oxygen-scavenging component and the catalyst-containing concentrate is present in the middle layer at about a 5:95 ratio. 49. The multi-layer container of claim 48, wherein the middle layer has a thickness of about 0.5 mil. 50. The multi-layer container of claim 49, wherein the container has an oxygen absorption of about 50 cc O2, per gram of oxygen-scavenging component. 51. A method of making the multi-layer container, comprising: providing a middle layer including a blend of: a polymer consisting essentially of polyethylene terephthalate (PET);at least one oxygen-scavenging component; and,at least one catalyst-containing concentrate that contains at least one catalyst transition metal up to about 3%, by weight, of the multi-layer container; and,interposing the middle layer between at least one outer layer and at least one inner layer without the use of an adhesive material.