Flexographic printing elements with improved air bleed

Details Flexographic printing elements with improved air bleed Flexographic printing elements with improved air bleed

B - Operations, Transporting

41

F

B41F 27/12 (2006.01)

Patent

CA 2417644

An adhesive tape for flexographic printing including a first adhesive layer, a substrate on the first adhesive layer, and a second adhesive layer on the substrate. The substrate preferably includes a polymeric film layer and a foam layer, wherein the topography of the first and second adhesive layers is substantially independent of the topography of the polymeric film layer. The polymeric film is preferably substantially smooth, and at least one of the first and second adhesive layers is preferably substantially continuous and includes a regular pattern of permanent grooves. The grooves preferably have a depth of about 4 ccm to about 200 ccm, and a width of about 4ccm to about 200 ccm.

Cette bande adhésive pour impression flexographique comporte une première couche adhésive surmontée d'un substrat et une seconde couche adhésive recouvrant le substrat. Le substrat comporte, de préférence, un couche à base de film polymère et une couche de mousse. La configuration des deux couches adhésives est sensiblement indépendante de celle de la couche à base de film polymère. Le film polymère est, de préférence, sensiblement lisse, l'une au moins des deux couches adhésives est continue et possède un motif régulier d'encoches permanentes. La profondeur de ces encoches est comprise, de préférence, entre 4 et 200 ?c¿cm et leur largeur entre 4 et 200 ?c¿cm.

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