Roll changer for offset rotary printing machines is used for reels of newsprint with width corresponding to that of at least six newspaper pages which are mounted on spools, into whose ends expandable cones fit

摘要

The roll changer for offset rotary printing machines is used for reels (161) of newsprint with a width corresponding to that of at least six newspaper pages. These are mounted on spools (163), into whose ends expandable cones (164) fit. The spool is made from a material with a moment of elasticity above 4000 N/mm2>.