Patent ID: 8106369
Filing Date: 2012-01-31
Classification: D06M,G21K

Abstract:
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; and A 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.