Flexographic printing machine with a drying, desiccation,...

B - Operations – Transporting – 41 – F

Patent

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Details

B41F 5/24 (2006.01) B41F 23/04 (2006.01)

Patent

CA 2655716

Flexographic printing machine consisting of one or more printing stations (100) situated in series, each printing station (100) comprising a frame on which at least one cliché-holder cylinder (102) is assembled, suitable for applying ink, taken from a tank (104) by means of at least one inking cylinder (106) in contact with the cliché-holder (102) and rotating in an opposite direction with respect to this, on a continuous strip (108) of materials to be printed. The strip (108) is moved and kept in contact with the cliché-holder cylinder (102) by means of at least one counter-drum (110) which rotates in an opposite direction with respect to the cliché-holder cylinder (102). In correspondence with the counter-drum (110) downstream with respect to the cliché-holder cylinder (102), there are one or more devices (112) capable of drying, desiccating, polymerizing and/or heating the ink deposited on the strip (108) by the cliché-holder cylinder (102). The counter-drum (110) can be conditioned at a controlled temperature to absorb the heat possibly emitted from the drying, desiccation, polymerization and/or heating devices (112) of the ink.

L'invention concerne une machine d'impression flexographique comprenant une ou plusieurs stations (100) d'impression positionnées en série, chaque station (100) d'impression comprenant une structure sur laquelle est monté au moins un cylindre (102) de support de cliché, adapté pour appliquer l'encre obtenue d'un réservoir (104) au moyen d'au moins un cylindre encreur (106) en contact avec le cylindre (102) de support de cliché, et tournant dans une direction opposée par rapport à celui-ci, sur une bande continue (108) de matériaux à imprimer. La bande (108) est déplacée et maintenue en contact avec le cylindre (102) de support de cliché au moyen d'au moins un tambour compteur (110) qui tourne dans une direction opposée par rapport au cylindre (102) de support de cliché. Un ou plusieurs dispositifs (112), associés au tambour compteur (110) situé en aval par rapport au cylindre (102) de support de cliché, servent à sécher, dessécher, polymériser et/ou chauffer l'encre déposée sur une bande (108) par le cylindre (102) de support de cliché. Le tambour compteur (110) peut être conditionné à une température contrôlée pour absorber la chaleur éventuellement générée par les dispositifs (112) de séchage, de dessèchement, de polymérisation et/ou de chauffage de l'encre.

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