Cinegel color and correction filters are manufactured using Rosco’s unique deep-dyed technique. This process begins with a 48” (1.2m) wide roll of clear PET polyester that is passed through a heated dye bath. The bath causes the film to swell, expanding the polymer structure and allowing the dye molecules to penetrate into the base film. As the polymer contracts to its normal form, the dye is trapped below the surface.
Deep-Dyed Polyester:
Base: Polyester (PET)
Gauge: 1.4-2.5 mil (35-64 um) nominal
Max Width: 48 in (1.2m)
Flame Retardant Rating:BS3944 PART 1 1992
Compliance: RoHS, REACH
Temp: Softening: 257°F (125° C)
Melting: 572°F (300° C)
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