Printing sleeves and methods for producing same

Details Printing sleeves and methods for producing same Printing sleeves and methods for producing same

B - Operations, Transporting

41

N

B41N 7/00 (2006.01)

Patent

CA 2339024

The invention is directed to a method for producing a novel flexographic printing sleeve (10) which is readily axially mountable on and dismountable from a complementary shaped printing cylinder (22). The method comprises providing an apparatus (112) for receiving a sprayed curable polymeric material (115) and for forming the flexographic printing sleeve (10). Then, the curable polymeric material (115) is sprayed onto the apparatus (112) and the flexographic printing sleeve (10) is formed. The sleeve (10) has a substantially unitary, non-laminated construction which is self-supporting. The cross-sectional inner and outer diameter of the flexographic printing sleeve (10) is expandable by introducing a relatively low pressure fluid between the inner surface (14) of the printing body sleeve and the outer cylindrically shaped wall (24) of the printing cylinder (22).

La présente invention concerne un procédé permettant de fabriquer une nouvelle gaine d'impression flexographique (10) pouvant facilement être montée axialement sur un cylindre d'impression (22) de forme complémentaire et démontée de celui-ci. Le procédé précité consiste à disposer d'un appareil (112) destiné à recevoir une matière polymère durcissable pulvérisée (115) et à former la gaine d'impression flexographique (10). On pulvérise alors la matière polymère durcissable (115) sur l'appareil (112) et l'on forme la gaine d'impression flexographique (10), qui est de construction sensiblement unitaire, non stratifiée et autoportante. On peut étendre le diamètre intérieur et extérieur de coupe transversale de la gaine d'impression flexographique (10) en introduisant un fluide à pression relativement basse entre la surface intérieure (14) de la gaine d'impression et la paroi extérieure de forme cylindrique (24) du cylindre d'impression (22).

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