These bubble cages make use of special carbon fiber rollers. Having only one contact point with the film, versus multiple points on traditional bubble cages, eliminates pinching, scratching and any other possible damage to the film.
Advantages:
No risk of marking the film
No risk of thermal shock
Low inertia bearing allows rolls to run at line speed
No limitations in handling different film thickness'
Inside of cylinders are not affected by extrusion residues
Carbon fiber rolls for reduced drag and deflection
