Patent ID: 7125320

Claim:
An apparatus for processing an edge of a sheet of material, said apparatus comprising: an encapsulation device for supporting two surfaces of the material; a processing device for processing the edge adjacent to the supported two surfaces of the material that is located on a first side of said encapsulation device; and said encapsulation device substantially prevents particles and other contaminants generated when said processing device processes the edge of the material from reaching the two surfaces of the material located on a second side of said encapsulation device, wherein said encapsulation device includes: a support plate, a pair of O-ring assemblies, supported by said support plate, each O-ring assembly includes: a pair of rollers; a seal plate; and an O-ring located around said pair of rollers and said seal plate, wherein said O-rings support the two surfaces of the material and substantially prevent particles and other contaminants generated when said processing device processes the edge of the material from reaching the two surfaces of the material located on the second side of said encapsulation device.