| 摘要 |
<p>An adapter sleeve (1), to be mounted onto a rotary mandrel of a printing machine in order to support a printing cylinder carrying data and/or images to be printed, presents a layered cylindrical body (2) comprising an internal layer (4) defining a bore (6) enabling the sleeve (2) to be mounted on the mandrel, and an external layer (10) for supporting the printing cylinder, rigid load-bearing spacer flanges (12) being disposed between said layers (4, 10), said flanges (12) being positioned within an empty space (30) present between the internal layer (4) and the external layer (10) of the sleeve (12), to provide rigidity and indeformability during the use of the sleeve with time. An annular insert (27) of material of very low friction coefficient is provided at each flange (12) within the inner surface (5) of the internal layer (4) of the layered body (2), said insert being rigid and non deformable and having an inner diameter equal to that of the mandrel on which the sleeve is to be mounted.</p> |
