Abstract:
The sleeve (1) for flexographic printing comprises a cylinder (2) and a protective element (3) applied on a base of the cylinder (2) and equipped with a register slot (7) that can be engaged by an abutment (8) provided on a mandrel (6) on which the sleeve (1) is mounted, the protective element (3) and the register slot (7) being made as a single piece (9) with the same type of material.
Abstract:
A rubber blanket (1) for a printing cylinder of a printing machine, comprising at least an upper printing layer (3, 3') made of compact elastomeric material, at least a lower layer (2) having a contact surface (2a) in contact with the printing cylinder, and at least one fabric reinforcement layer (4) interposed between the upper layer (3) and the lower layer (2), the lower layer (2) being made of expanded elastomeric material.
Abstract:
The impregnation tank (1) for impregnating a fabric (3) comprises an impregnation roller (2) for impregnating the fabric (3) with the resin, a chamber (6) that can be filled with a resin and that extends all around the impregnation roller (2), an entrance channel (7) for the fabric (3) to enter said chamber (6) and an exit channel (8) for the fabric (3) to exit said chamber (6), the impregnation roller (2) having ridges (9) on the external cylindrical surface so as to delimit uniformly distributed storage cavities (10) for the resin, the chamber (6) having an impregnation zone (11) for impregnating the fabric (3), a regeneration zone (12) for regenerating the resin in the storage cavities (10), a first connecting zone (20) connecting to said entrance channel (7), a second connecting zone (21) connecting to the exit channel (8), the first and second connecting zones (20, 21) being interposed between the impregnation zone (11) and the regeneration zone (12), the regeneration zone (12) being smaller in volume than the impregnation zone (11).
Abstract:
The method for realising on a sleeve (1) for flexographic printing a guide (2) for laying and cutting a cliché (10) and/or a bi-adhesive layer interposed between the sleeve (1) and the cliché (10) comprises the following steps: realising at least a longitudinal profiled element (7) longitudinally provided with a surface guide cavity (8) for laying and cutting the cliché (10) and/or the bi-adhesive layer; making, on an external coating layer (6) of the sleeve (1), a groove (9) having a smaller depth than the thickness of the external coating layer (6) and configured for housing said profiled element (7) inside thereof; only partially filling said groove (9) with a polymerisable glue (11) or apply to the surface of said groove (9) an adhesive layer; positioning, on the glue (11) or on the adhesive layer, the profiled element (7) with the cavity (8) facing the outside of the groove (9).
Abstract:
A rubber blanket (1) for offset printing having a plurality of layers, of which the inner layer comes into contact with the printing cylinder and the outer layer comes into contact with the object to be printed, whereupon the print engraving present on the outer layer is reproduced, and which has a main printing layer (5) which comes into contact with the object to be printed and at least one underlayer of a different colouring from the main printing layer.
Abstract:
The printing blanket (1) for a printing cylinder of a printing machine, comprises an elastomeric made top layer (3) having a printing surface (3a), at least one compressible layer (4), and at least a first layer (6) made of non woven fabric.