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The present disclosure includes an electron beam emitter, a roller for a web, circumferential radiation shielding, a reaction chamber, movement between open and closes positions, a depositor, baffles, inert gas dispenser, and other features. One example in the present disclosure is a web carrying ro

The present disclosure includes an electron beam emitter, a roller for a web, circumferential radiation shielding, a reaction chamber, movement between open and closes positions, a depositor, baffles, inert gas dispenser, and other features. One example in the present disclosure is a web carrying roller for electron beam irradiation of the web on one side of that roller within a baffle-containing shielded area, while another side of that roller is outside of the shielded area, and near the two ends of the roller are arcuate tongue and groove barriers to x-radiation leakage from the shielded area. The baffle-containing shielded area has a series of voids separated by walls, rather than having the shielded area positioned close to the circumference of the cylinder along its length.

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1. An apparatus, comprising: An electron beam emitter;A reaction chamber adjacent said electron beam emitter and having radiation shielding for substantially containing or de-energizing radiation produced from electron beams;A cylindrical roller having a portion of its surface cylindrical to enable

1. An apparatus, comprising: An electron beam emitter;A reaction chamber adjacent said electron beam emitter and having radiation shielding for substantially containing or de-energizing radiation produced from electron beams;A cylindrical roller having a portion of its surface cylindrical to enable a web to wrap partially around it within said reaction chamber, said roller further including radiation shielding to partially define said reaction chamber, wherein a part of said cylindrical surface is outside of said reaction chamber and in which there is a first groove or protrusion or brush engaging area encircling said cylindrical surface axially outboard of the position for a web to wrap around; andA first circumferential radiation shielding located in close proximity to and around a circumference of said roller's cylindrical surface and which has either a shape positioned near and substantially corresponding to said first groove or protrusion, or a brush to engage the brush engaging area to substantially contain or de-energize radiation produced from the electron beams. 2. The apparatus of claim 1 and further comprising a second groove or protrusion encircling said cylindrical surface axially outboard of the position for a web to wrap around but on the opposite end from said first groove or protrusion, and also comprising a second circumferential radiation shielding located in close proximity to and around a circumference of said roller's cylindrical surface and which has a shape positioned near and substantially corresponding to said second groove or protrusion to substantially contain or de-energize radiation produced from the electron beams and wherein said first and said second circumferential radiation shielding are an arc of a circumference less than or equal to about 180 degrees. 3. The apparatus of claim 1 in which said first circumferential radiation shielding comprises a tongue and groove interface near one end of said cylindrical roller for extending circumferentially around a portion of it. 4. The apparatus of claim 3 in which said tongue and groove interface includes a groove in said cylindrical surface of said roller. 5. The apparatus of claim 3 in which said groove has substantially sloping sides. 6. The apparatus of claim 3 in which said groove at its deepest point is laterally offset from its shallowest point. 7. The apparatus of claim 3 in which said groove is defined, at least in part, by a surface that tapers in a direction that is axial with respect to said roller. 8. The apparatus of claim 2 wherein the apparatus has a first, closed position wherein said roller is adjacent said beam emitter and wherein said beam emitter portion radiation shielding and said roller radiation shielding collectively define said reaction chamber; and, wherein the apparatus has a second, open position wherein said roller is moved away from said beam emitter allowing operator access to said beam emitter. 9. The apparatus of claim 3 wherein the apparatus has a first, closed position wherein said roller is adjacent said beam emitter and wherein said beam emitter portion radiation shielding and said roller radiation shielding collectively define said reaction chamber; and, wherein the apparatus has a second, open position wherein said roller is moved away from said beam emitter allowing operator access to said beam emitter. 10. The apparatus of claim 1 in which said roller is supported for rotation by at least one bearing located outside of said reaction chamber. 11. The apparatus of claim 10 additionally comprising a driver that engages said roller outside of said reaction chamber. 12. The apparatus of claim 1 in which said roller is the only roller for contacting a web that is at least partially within said reaction chamber. 13. The apparatus of claim 1 in which said roller is chilled by coolant fluid flowing into said roller. 14. The apparatus of claim 1 and further comprising: A depositor of uncured material onto at least a portion of an opposite second side of said web upstream from said roller,Said web following a path from said depositor to said roller that is free of contact with other rollers contacting said uncured material on said second side of said web. 15. The apparatus of claim 1 wherein the apparatus has a first, closed position wherein said roller is adjacent said beam emitter and wherein said beam emitter portion radiation shielding and said roller radiation shielding collectively define said reaction chamber; and, wherein the apparatus has a second, open position wherein said roller is moved away from said beam emitter allowing operator access to said beam emitter. 16. The apparatus of claim 1 and further comprising: Internal baffles which include radiation shielding, said baffles being within said reaction chambers that segment the inside of the reaction chamber into successive voids, at least some extending to a point near the surface of said roller that leaves space for the web to pass but limited area for radiation energy to pass from one void to the next, wherein successive voids provides for radiation to successively contact surfaces to reduce the radiation energy. 17. The apparatus of claim 8 in which said roller is supported for rotation by at least one bearing located outside of said reaction chamber. 18. The apparatus of claim 17 in which said roller is chilled by coolant fluid flowing into and out of said roller. 19. An apparatus, comprising: An electron beam emitter;A reaction chamber adjacent said electron beam emitter and having radiation shielding for substantially containing or de-energizing radiation produced from the electron beams;A roller to enable a web to wrap partially around it within said reaction chamber, said roller further including radiation shielding to partially define said reaction chamber; andA web wrapped around said roller, wherein a first side of said web is facing said roller;A depositor of uncured material onto at least a portion of an opposite second side of said web upstream from said roller,Said web following a path from said depositor to said roller that is free of contact between said uncured material on said second side of said web and another roller. 20. The apparatus of claim 19 in which the path between said depositor and said roller is substantially horizontal. 21. The apparatus of claim 19 in which the path between said depositor and said roller has an overall angular slope between −30 and 30 degrees. 22. The apparatus of claim 19 wherein said roller is the only roller at least partially within the reaction chamber, and in which the web contacts a second roller that is completely outside of said reaction chamber. 23. The apparatus of claim 22 in which downstream motion of the web after said roller passes outside of and under said reaction chamber. 24. The apparatus of claim 19 and further comprising circumferential radiation shielding located in close proximity to and around said roller and axially outboard of the web to substantially contain or de-energizing radiation produced from the electron beams. 25. The apparatus of claim 24 wherein the apparatus has a first, closed position wherein said roller is adjacent said beam emitter and wherein said beam emitter portion radiation shielding and said roller radiation shielding collectively define said reaction chamber; and, wherein the apparatus has a second, open position wherein said roller is moved away from said beam emitter allowing operator access to said beam emitter. 26. The apparatus of claim 25 in which said roller is supported for rotation by at least one bearing located outside of said reaction chamber. 27. The apparatus of claim 19 and further comprising: internal baffles which include radiation shielding, said baffles being within said reaction chambers that segment the inside of the reaction chamber into successive voids, at least some extending to a point near the surface of said roller that leaves space for the web to pass but limited area for radiation energy to pass from one void to the next, wherein successive voids provides for radiation to successively contact surfaces to reduce the radiation energy. 28. The apparatus of claim 19 in which said roller is a cylindrical roller that is chilled by a liquid coolant fluid flowing into said cylindrical roller. 29. The apparatus of claim 24 in which said first circumferential radiation shielding comprises a tongue and groove interface near one end of said cylindrical roller for extending circumferentially around a portion of it. 30. The apparatus of claim 28 and further comprising circumferential radiation shielding around said roller which near one end of said cylindrical roller comprises a tongue and groove interface for extending circumferentially around a portion of it. 31. An apparatus, comprising: An electron beam emitter;A reaction chamber adjacent said electron beam emitter and having radiation shielding for substantially containing or de-energizing radiation produced from the electron beams;A cylindrical roller having a portion of its surface cylindrical to enable a web to wrap partially around it within a reaction chamber, said roller further including radiation shielding to partially define said reaction chamber, wherein a part of said cylindrical surface is outside of said reaction chamber;Internal baffles which include radiation shielding, said baffles being within said reaction chambers that segment the inside of the reaction chamber into successive voids, at least some extending to a point near the surface of said roller that leaves space for the web to pass but limited area for radiation energy to pass from one void to the next, wherein successive voids provides for radiation to successively contact surfaces to reduce the radiation energy. 32. The apparatus of claim 31 in which there within said reaction chamber has at least two baffled voids on upstream side of the web location and at least two baffled voids on the downstream side of the web location, with said electron beam emitter positioned in between the upstream and downstream sides. 33. The apparatus of claim 32 in which said electron beam emitter has a window through which its beam is emitted and one of said baffles between voids is substantially parallel in orientation to the plane of the window on said electron beam emitter. 34. The apparatus of claim 33 in which said plane of said window is substantially vertical. 35. The apparatus of claim 31 wherein the apparatus has a vertical window between said electron beam emitter and the web and has a first, closed position wherein said roller is adjacent said beam emitter and wherein said beam emitter portion radiation shielding and said roller radiation shielding collectively define said reaction chamber; and, wherein the apparatus has a second, open position wherein said roller is moved away from said beam emitter allowing operator access to said beam emitter. 36. An apparatus, comprising: A beam emitter portion including an electron beam emitter and having radiation shielding for substantially containing or de-energizing radiation produced from electron beams;A roller portion including a roller to enable a web to wrap partially around it within a reaction chamber, said roller further including radiation shielding to partially define said reaction chamber;wherein the apparatus has a first, closed position wherein said roller is adjacent said beam emitter and wherein said beam emitter portion radiation shielding and said roller radiation shielding collectively define said reaction chamber; and,wherein the apparatus has a second, open position wherein said roller and said beam emitter are separated from each other substantially horizontally in a direction aligned with a radii of said roller, allowing operator access to said beam emitter. 37. The apparatus of claim 36 wherein the apparatus has a generally vertical window between said electron beam emitter and the web. 38. The apparatus of claim 36 and further comprising at least one track to guide movement of said beam emitter portion and said roller portion together and apart from each other. 39. The apparatus of claim 36 wherein said roller comprises a cylindrical roller with circumferential radiation shielding around it in an arc of a circumference less than or equal to about 180 degrees. 40. The apparatus of claim 36 and further comprising circumferential radiation shielding around said roller comprises a tongue and groove interface near one end of said cylindrical roller for extending circumferentially around a portion of it. 41. The apparatus of claim 36 in which said roller is a cylindrical roller that is chilled by liquid coolant fluid flowing into said cylindrical roller. 42. The apparatus of claim 38 in which said roller is a cylindrical roller that is chilled by coolant fluid flowing into and out of said cylindrical roller and further comprising circumferential radiation shielding around said roller which comprises a tongue and groove interface near one end of said cylindrical roller for extending circumferentially around a portion of it. 43. The apparatus of claim 42 wherein the apparatus has a generally vertical window between said electron beam emitter and the web. 44. The apparatus of claim 39 wherein said roller is the only roller at least partially within the reaction chamber, and in which the web contacts a second roller that is completely outside of said reaction chamber.