LOW RUN-OUT EDGE ROLLERS FOR USE WITH GLASS RIBBONS

摘要

Edge rollers (26) for glass ribbons (20) are disclosed in which the run-out generating portion of the roller's bearing assembly (50) is located inboard of the ribbon's edge, e.g., over the ribbon's edge portion (34). Such a location reduces the amplification of run-out which occurs with conventional edge roller constructions. By eliminating the amplification, run-out at the surface of the ribbon can, for example, be reduced from 1-3 mm to 0.05-0.15 mm. To withstand the elevated temperatures which exist inboard of the ribbon's edge, the edge roller assemblies can employ gas or ceramic bearings.