| abstract |
Process for the production of translucent, matt polyurethane films with a rough surface by extrusion of thermoplastic polyurethane elastomers into flat films or film tubes, characterized in that the extruded film is stored up to> 15%, measured according to ASTM D 1-003, and then both Embossing film surfaces with the help of embossing rollers with a different number of grids, each in the range from 20 to 100 grids / cm², under a pressure of 5 to 20 bar and at temperatures of 130 to 175 ° C. |