This European standard specifies safety requirements relating to the design and construction of multi-roll calenders intended for the processing of rubber or plastics.This standard concerns the calender alone including all components fixed to its frame.Annex A shows examples of various types of calenders and annex B shows examples of calendaring processes.The following machines are excluded:- two-roll calenders forming an integral unit with an extruder (roller head);- two or three-roll polishing , laminating or embossing units (which are not calenders) installed downstream of extruders in film processing lines.This standard deals with the significant hazard