Production of a photosensitive recording material
First Claim
1. A process for the production of a photosensitive recording material for producing flexographic printing plates, which comprises calendering a first meltable photosensitive layer to the uppermost layer of a composite element comprising, in the following order, a protective cover sheet, a thermoplastic release layer and, optionally, a second meltable layer which is photosensitive or which is rendered photosensitive before the printing plate is used on the release layer, wherein the surface of the uppermost layer of the composite element or the surface of said first photosensitive layer is subjected to a corona treatment within from about 60 to 600 seconds before contact and wherein the corona-treated layer softens or melts during calendering.
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Accused Products
Abstract
A process for the production of a photosensitive recording material for producing relief printing plates is described, in which a photosensitive layer is laminated with a composite element comprising a protective cover sheet, a release layer and, if required, a further layer, wherein the surface of the uppermost layer of the composite element or the surface of the photosensitive layer is subjected to a corona treatment immediately before contact. As a result of the corona treatment, the adhesion of the applied layer is substantially increased.
36 Citations
16 Claims
- 1. A process for the production of a photosensitive recording material for producing flexographic printing plates, which comprises calendering a first meltable photosensitive layer to the uppermost layer of a composite element comprising, in the following order, a protective cover sheet, a thermoplastic release layer and, optionally, a second meltable layer which is photosensitive or which is rendered photosensitive before the printing plate is used on the release layer, wherein the surface of the uppermost layer of the composite element or the surface of said first photosensitive layer is subjected to a corona treatment within from about 60 to 600 seconds before contact and wherein the corona-treated layer softens or melts during calendering.
- 15. A process for the production of a photosensitive recording material for producing flexographic printing plates, which comprises calendering a first meltable photosensitive layer to the uppermost layer of a composite element comprising, in the following order, a protective cover sheet, a thermoplastic release layer and a second meltable layer which is photosensitive or which is rendered photosensitive before the printing plate is used on the release layer, wherein the surface of the uppermost layer of said composite element or the surface of said first photosensitive layer is subjected to a corona treatment immediately before contact and wherein the corona-treated layer softens or melts during calendering.
Specification