I like getting technical, so here goes
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The film is actually made up of millions of microscopic fibers that are pressed into a flat sheet. When they are layered, and a light source is applied, it produces a side emitting fiber optic effect. You can see the film when you look at our standard clear blades. The shiny metallic look of our standard UltraBlade is due to the layered bladefilm.
Our film is a blend of cellulose and synthetic acetate. This film is flexible enough for combat blades and makes light distribution very even.
To my knowledge, no one else uses the same kind of film we do. We feel our film is the best, although similar effects can be had with different types of films.
The film is glued in place on the bottom of all our blades. The only exception is certain UltraEdge Initiate blades which dont need the film because their short length and white polycarbonate medium ensurers even light distribution.