Forming tools for shaping plastics film into tubes - have contact surfaces roughened to reduce tendency of film to adhere to them owing to static

摘要

Shaping tool for moulding tubes with circular, rectangular over cross-section from plastics films, has at least those surfaces coming into contact with the film roughened e.g., by sand blasting. This minimises tendency of the film to adhere to the tool under the action of electrostatic charges or other adhesive forces.