| 摘要 |
A roller guide (9) for extrusion calibrators (1) of tubular plastic films (7), provided with a surface, removable and interchangeable sleeve (10) made from materials having high thermal insulation characteristics and a good surface friction (grip) coefficient. Such characteristics allow a regular flow of the film being extruded (7) and a uniform cooling thermal dispersion throughout the surface development of said films. <IMAGE> |
