PLATE SLEEVE-HOLDER CYLINDER MADE OF CARBON-FIBRE COMPOSITE MATERIAL FOR FLEXOGRAPHIC PRINTING, PROVIDED WITH LOW-VOLUME COMPRESSED AIR PIPES FOR SLEEVE INSERTION, AND RELATED MANUFACTURING PROCESS

摘要

A plate sleeve-holder cylinder for flexographic printing provided with a carbon-fibre central tube (T), of the type comprising compressed air channels (6, 7, 8) arranged between one of the end flanges (Fb, Fm) of said plate sleeve-holder cylinder and a plurality of holes (H) formed in the outer surface of said central tube (T) made of carbon-fibre composite material, in order to ease the insertion of sleeves onto said plate sleeve-holder cylinder. Said air channels (6, 7, 8) are partly embedded within said end flanges (Fb, Fm), partly within a thickness of a side wall (P) of said central tube (T) made of carbon-fibre composite material.;A process of manufacturing said central tube (T) by inserting air pipes (6) into grooves (1) which are formed by mechanical milling of a surface of the supporting structure (P) of said central tube (T) obtained through a first lamination and polymerization, said grooves being coated with a surface finishing structure (S) obtained through a second lamination and polymerization.