Combinations of atmosphere control members are used to control the atmosphere within a sealed container which contains a respiring biological material. The combination makes use of a first ACM having a first R ratio (the ratio of carbon dioxide permeability to oxygen permeability) and a second ACM h
Combinations of atmosphere control members are used to control the atmosphere within a sealed container which contains a respiring biological material. The combination makes use of a first ACM having a first R ratio (the ratio of carbon dioxide permeability to oxygen permeability) and a second ACM having a second R ratio, the first R ratio being substantially greater than 1.0, and the second R ratio being less than the first R ratio. This combination (31, 321, 322, 331, 332) can form part of the sealed container (1) itself, or can be part of an assembly (31, 32, 34) through which the packaging atmosphere within the sealed container (1) is circulated.
대표청구항▼
1. A method of controlling a packaging atmosphere within a sealed shipping container which is part of a container system which comprises (a) a shipping container which (i) can be loaded onto and transported by a ship or a truck, and(ii) has a capacity of at least 40 m3,(b) a respiring biological mat
1. A method of controlling a packaging atmosphere within a sealed shipping container which is part of a container system which comprises (a) a shipping container which (i) can be loaded onto and transported by a ship or a truck, and(ii) has a capacity of at least 40 m3,(b) a respiring biological material which (i) is sealed within the shipping container, and(ii) is surrounded by a packaging atmosphere,(c) an assembly which (i) is outside but adjacent to the shipping container, and(ii) includes a first atmosphere control member (ACM) having a surface area of at least 0.65 m2, an R ratio of at least 3, a first surface and a second surface, and(d) a second ACM which (i) is within the shipping container,(ii) has an R ratio which is at least 3 units lower than the R ratio of the first ACM,(iii) has a first surface which is in direct contact with the packaging atmosphere, and(iv) has a second surface which is not part of an exterior surface of the container and is in direct contact with an exterior atmosphere of the second ACM; the method comprising the steps of (A) causing an atmosphere to circulate from the shipping container, through the assembly in contact with the first surface of the first ACM, and back into the shipping container, the atmosphere when it first contacts the first surface of the first ACM consisting of the packaging atmosphere; and(B) causing an exterior atmosphere of the first ACM to contact the second surface of the first ACM and causing the exterior atmosphere of the first ACM to flow over the second surface of the first ACM. 2. A method according to claim 1 wherein the rate at which the exterior atmosphere of the first ACM flows over the second surface of the first ACM is controlled by reference to information received regarding the packaging atmosphere. 3. A method according to claim 1 wherein the exterior atmosphere of the first ACM is air or oxygen-enriched air. 4. A method according to claim 1 wherein the-second ACM provides a controlled leak which helps to equalize pressure inside the container with pressure of a surrounding atmosphere. 5. A method according to claim 1 wherein the second ACM is part of a chamber to which access of the exterior atmosphere to the second ACM can be controlled, and the method includes causing the exterior atmosphere to the second ACM to flow through the chamber. 6. A method according to claim 1 wherein the rate at which the atmosphere flows through the assembly is controlled by reference to information received indicating the concentration of a gas in the packaging atmosphere. 7. A method according to claim 1 which comprises, before step (A), the step of connecting the shipping container to the assembly so that the atmosphere can be circulated from the shipping container, through the assembly and back into the shipping container, the connecting step being carried out while the shipping container is loaded onto a ship or a truck. 8. A method according to claim 1 which comprises, before step (A), the steps of unloading the shipping container from a ship or a truck, andafter the unloading step, connecting the shipping container to the assembly so that the atmosphere can be circulated from the shipping container, through the assembly and back into the shipping container. 9. A method according to claim 1 wherein the assembly is attached to the shipping container and is not removed when the biologically respiring material is placed within, or removed from, the container. 10. A container system which comprises (a) a shipping container which (i) can be loaded onto and transported by a ship or a truck, and(ii) has a capacity of at least 40 m3,(b) a respiring biological material which (i) is sealed within the shipping container, and(ii) is surrounded by a packaging atmosphere, and(c) an assembly which (i) is outside but adjacent to the shipping container, and(ii) includes (1) a first atmosphere control member (ACM), which has a surface area of at least 0.65 m2, an R ratio of at least 3, a first surface which is contacted by the packaging atmosphere and a second surface which is contacted by an exterior atmosphere of the first ACM, and(2) a second ACM which has an R ratio which is at least 3 units lower than the R ratio of the first ACM, a first surface which is contacted by the packaging atmosphere, and a second surface which is contacted by an exterior atmosphere of to the second ACM; and(d) conduits for circulating an atmosphere from the shipping container, through the assembly in contact with the first surface of the first ACM, and in contact with the first surface of the second ACM, and back into the shipping container, the atmosphere flowing over the first surface of the first ACM and the first surface of the second ACM simultaneously or sequentially, and the atmosphere when it first contacts either or both of the first surface of the first ACM and the first surface of the second ACM consisting of the packaging atmosphere; said container system being capable of measuring the concentration of at least one gas in the packaging atmosphere, and comprising one or more devices selected from the group consisting of compressors, pumps and valves for supplying the exterior atmosphere of the first ACM to the second surface of the first ACM at a rate which is responsive to input regarding the concentration of at least one gas in the packaging atmosphere. 11. A container system according to claim 10 which comprises one or more devices selected from the group consisting of compressors, pumps and valves for changing the rate at which a third atmosphere circulates through the assembly in response to input regarding the concentration of at least one gas in the packaging atmosphere. 12. A method according to claim 1 wherein the exterior atmosphere of the first ACM comprises a ripening agent for the respiring biological material and the ripening agent is introduced into the packaging atmosphere through the first ACM. 13. A method of controlling a packaging atmosphere within a sealed container which is part of a container system which comprises (a) a shipping container which (i) can be loaded onto and transported by a ship or a truck, and(ii) has a capacity of at least 40 m3,(b) a sealed container which has a capacity of at least 1 m3, which is within the shipping container and which contains a respiring biological material which is surrounded by a packaging atmosphere,(c) an assembly which (i) is outside but adjacent to the sealed container, and(ii) includes a first atmosphere control member (ACM) having a surface area of at least 0.65 m2, an R ratio of at least 3, a first surface and a second surface, and(d) a second ACM which (i) is within the shipping container,(ii) has an R ratio which is at least 3 units lower than the R ratio of the first ACM,(iii) has a first surface which is in direct contact with the packaging atmosphere, and(iv) has a second surface which is not part of an exterior surface of the container and is in direct contact with an exterior atmosphere of the second ACM; the method comprising the steps of (A) causing an atmosphere to circulate from the sealed container, through the assembly in contact with the first surface of the first ACM and back into the sealed container, the atmosphere when it first contacts the first surface of the first ACM consisting of the packaging atmosphere; and(B) causing an exterior atmosphere of the first ACM to contact the second surface of the first ACM and causing the exterior atmosphere of the first ACM to flow over the second surface of the first ACM. 14. A method according to claim 13 wherein the rate at which the exterior atmosphere of the first ACM flows over the second surface of the first ACM is controlled by reference to information received regarding the packaging atmosphere. 15. A method according to claim 13 wherein the second ACM provides a controlled leak which helps to equalize pressure inside the sealed container with pressure of a surrounding atmosphere. 16. A method according to claim 13 which comprises, before step (A), the step of connecting the sealed container to the assembly so that the atmosphere can be circulated from the sealed container through the assembly and back into the sealed container, the connecting step being carried out while the shipping container is loaded onto a ship or a truck. 17. A method according to claim 13 which comprises, before step (A), the steps of unloading the shipping container from a ship or a truck, andafter the unloading step, connecting the sealed container to the assembly so that the atmosphere can be circulated from the sealed container through the assembly and back into the sealed container. 18. A container system which comprises (a) a shipping container which (i) can be loaded onto and transported by a ship or a truck, and(ii) has a capacity of at least 40 m3,(b) a sealed container which has a capacity of at least 1 m3, which is within the shipping container and which contains a respiring biological material which is surrounded by a packaging atmosphere, and(c) an assembly which (i) is outside but adjacent to the sealed container, and(ii) includes (1) a first atmosphere control member (ACM), which has a surface area of at least 0.65 m2, an R ratio of at least 3, a first surface which is contacted by the packaging atmosphere and a second surface which is contacted by an exterior atmosphere of the first ACM, and(2) a second ACM which has an R ratio which is at least 3 units lower than the R ratio of the first ACM, a first surface which is contacted by the packaging atmosphere, and a second surface which is contacted by an exterior atmosphere to the second ACM; and(d) conduits for circulating an atmosphere from the sealed container, through the assembly in contact with the first surface of the first ACM, and in contact with the first surface of the second ACM, and back into the sealed container, the atmosphere flowing over the first surface of the first ACM and the first surface of the second ACM simultaneously or sequentially, and the atmosphere when it first contacts either or both of the first surface of the first ACM and the first surface of the second ACM consisting of the packaging atmosphere; said container system being capable of measuring the concentration of at least one gas in the packaging atmosphere, and comprising one or more devices selected from the group consisting of compressors, pumps and valves for supplying the exterior atmosphere of the first ACM to the second surface of the first ACM at a rate which is responsive to input regarding the concentration of at least one gas in the packaging atmosphere. 19. A container system according to claim 18 which comprises one or more devices selected from the group consisting of compressors, pumps and valves for changing the rate at which a third atmosphere circulates through the assembly in response to the input regarding the concentration of at least one gas in the packaging atmosphere.
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