Abstract: Methods for producing cylindrical flexographic printing elements, the cylindrical flexographic printing elements having a relief-forming layer, and the relief-forming layer being produced by successive application of a plurality of layers of a relief-forming material in liquid melt form, preferably of a photopolymerizable material in liquid melt form, to a rotating cylindrical sleeve in a continuous process.

Abstract: A method for producing flexographic printing plates, using a photopolymerizable flexographic printing element having, arranged one atop another, a dimensionally stable support, a photopolymerizable, relief-forming layer, an elastomeric binder, an ethylenically unsaturated compound, and a photoinitiator, and optionally a rough, UV-transparent layer, a particulate substance, and digitally imagable layer. The method includes: (a) producing a mask by imaging the digitally imagable layer, (b) exposing the photopolymerizable, relief-forming layer through the mask with actinic light, and photopolymerizing the image regions of the layer, and (c) developing the photpolymerized layer by washing out the unphotopolymerized regions of the relief-forming layer with an organic solvent, or by thermal development.

Abstract: A method for producing flexographic printing plates, using a photopolymerizable flexographic printing element having, arranged one atop another, a dimensionally stable support, a photopolymerizable, relief-forming layer, an elastomeric binder, an ethylenically unsaturated compound, and a photoinitiator, and optionally a rough, UV-transparent layer, a particulate substance, and digitally imagable layer. The method includes: (a) producing a mask by imaging the digitally imagable layer, (b) exposing the photopolymerizable, relief-forming layer through the mask with actinic light, and photopolymerizing the image regions of the layer, and (c) developing the photpolymerized layer by washing out the unphotopolymerized regions of the relief-forming layer with an organic solvent, or by thermal development.

Abstract: A method for producing flexographic printing plates, using a photopolymerizable flexographic printing element having, arranged one atop another, a dimensionally stable support, a photopolymerizable, relief-forming layer, an elastomeric binder, an ethylenically unsaturated compound, and a photoinitiator, and optionally a rough, UV-transparent layer, a particulate substance, and digitally imagable layer. The method includes: (a) producing a mask by imaging the digitally imagable layer, (b) exposing the photopolymerizable, relief-forming layer through the mask with actinic light, and photopolymerizing the image regions of the layer, and (c) developing the photpolymerized layer by washing out the unphotopolymerized regions of the relief-forming layer with an organic solvent, or by thermal development.

Abstract: Photopolymerizable flexographic printing elements which contain cyclohexanepolycarboxylic esters as plasticizers and also their use for producing flexographic printing forms for printing with UV inks, in particular for UV narrow web printing.

Abstract: A device for automated implementation of preliminary reverse exposure, main exposure, and development of digitally imagable flexographic printing elements, and a method for producing flexographic printing plates starting from digitally imaged flexographic printing elements, using said apparatus.

Abstract: Digitally imagable flexographic printing elements for producing flexographic printing plates, which comprise an organically soluble relief-forming layer, a water-soluble barrier layer for oxygen, and a water-soluble laser-ablatable mask layer. A method for producing flexographic printing plates using such flexographic printing elements, which comprises a two-stage washout procedure using aqueous and organic washout media.

Abstract: Digital imageable flexographic printing elements for producing flexographic printing plates, which are developable using hydrocarbon-comprising washout media and which, between the photopolymerizable layer and the digital imageable layer, have a polar, ultrathin, oxygen-blocking barrier layer. Methods for producing flexographic printing plates using such digital imageable flexographic printing elements, by imaging, exposing, washing out, drying, and post-treating, the washout being formed by means of hydrocarbon-comprising washout media.

Abstract: Laminate comprising a) a photopolymerizable relief-forming layer, at least containing an elastomeric binder, ethylenically unsaturated monomers and a photoinitiator and optionally further additives, b) an optionally photopolymerizable elastomeric substrate layer, at least containing an elastomeric binder, optionally ethylenically unsaturated monomers and a photoinitiator and optionally further additives, the relief-forming layer a) having a hardness of 30 to 70° Shore A and the elastomeric substrate layer b) having a hardness of 75° Shore A to 70° Shore D in each case in the photopolymerized state, and the layer b) having a hardness of at least 5° Shore A greater than the layer a).

Abstract: Digitally imagable flexographic printing elements for producing flexographic printing plates, which comprise an organically soluble relief-forming layer, a water-soluble barrier layer for oxygen, and a water-soluble laser-ablatable mask layer. A method for producing flexographic printing plates using such flexographic printing elements, which comprises a two-stage washout procedure using aqueous and organic washout media.

Abstract: A device for automated implementation of preliminary reverse exposure, main exposure, and development of digitally imagable flexographic printing elements, and a method for producing flexographic printing plates starting from digitally imaged flexographic printing elements, using said apparatus.

Abstract: Methods for producing cylindrical flexographic printing elements, the cylindrical flexographic printing elements having a relief-forming layer, and the relief-forming layer being produced by successive application of a plurality of layers of a relief-forming material in liquid melt form, preferably of a photopolymerizable material in liquid melt form, to a rotating cylindrical sleeve in a continuous process.

Abstract: Digital imageable flexographic printing elements for producing flexographic printing plates, which are developable using hydrocarbon-comprising washout media and which, between the photopolymerizable layer and the digital imageable layer, have a polar, ultrathin, oxygen-blocking barrier layer. Methods for producing flexographic printing plates using such digital imageable flexographic printing elements, by imaging, exposing, washing out, drying, and post-treating, the washout being formed by means of hydrocarbon-comprising washout media.

Abstract: Photopolymerizable flexographic printing elements which contain cyclohexanepolycarboxylic esters as plasticizers and also their use for producing flexographic printing forms for printing with UV inks, in particular for UV narrow web printing.

Abstract: Photopolymerizable flexographic printing elements which contain cyclohexanepolycarboxylic esters as plasticizers and also their use for producing flexographic printing forms for printing with UV inks, in particular for UV narrow web printing.

Abstract: A method for producing flexographic printing plates, using a photopolymerizable flexographic printing element having, arranged one atop another, a dimensionally stable support, a photopolymerizable, relief-forming layer, an elastomeric binder, an ethylenically unsaturated compound, and a photoinitiator, and optionally a rough, UV-transparent layer, a particulate substance, and digitally imagable layer. The method includes: (a) producing a mask by imaging the digitally imagable layer, (b) exposing the photopolymerizable, relief-forming layer through the mask with actinic light, and photopolymerizing the image regions of the layer, and (c) developing the photpolymerized layer by washing out the unphotopolymerized regions of the relief-forming layer with an organic solvent, or by thermal development.

Abstract: The invention relates to photopolymerizable flexographic printing elements which contain ethylenically unsaturated, alicyclic monomers and hard flexographic printing plates, in particular cylindrical continuous seamless flexographic printing plates, which can be produced therefrom.

Abstract: Processes comprising providing a layer composite comprising a layer of photopolymerizable material and a removable substrate film disposed on one side of the layer of photopolymerizable material, wherein the photopolymerizable material comprises an elastomeric binder, an ethylenically unsaturated monomer and a photoinitiator; and (a) miter-cutting two edges of the layer composite to be joined, to form two miter-cut ends; (b) providing a hollow cylinder on a rotatably mounted support cylinder, wherein the hollow cylinder has an outer surface and is in a temporarily locked position relative to the support cylinder; (c) applying an adhesion-promoting layer to the outer surface of the hollow cylinder; (d) applying the layer composite to the hollow cylinder bearing the adhesive-promoting layer, wherein the layer composite is disposed on the hollow cylinder such that the removable substrate film faces away from the hollow cylinder and the two miter-cut ends lie substantially one on top of the other, but not overlap

Abstract: Photopolymerizable flexographic printing elements which contain cyclohexanepolycarboxylic esters as plasticizers and also their use for producing flexographic printing forms for printing with UV inks, in particular for UV narrow web printing.

Abstract: Laminate comprising a) a photopolymerizable relief-forming layer, at least containing an elastomeric binder, ethylenically unsaturated monomers and a photoinitiator and optionally further additives, b) an optionally photopolymerizable elastomeric substrate layer, at least containing an elastomeric binder, optionally ethylenically unsaturated monomers and a photoinitiator and optionally further additives, the relief-forming layer a) having a hardness of 30 to 70° Shore A and the elastomeric substrate layer b) having a hardness of 75° Shore A to 70° Shore D in each case in the photopolymerized state, and the layer b) having a hardness of at least 5° Shore A greater than the layer a).