Stock material or miscellaneous articles – Structurally defined web or sheet – Discontinuous or differential coating – impregnation or bond
Patent
1998-01-27
1999-10-05
Hamilton, Cynthia
Stock material or miscellaneous articles
Structurally defined web or sheet
Discontinuous or differential coating, impregnation or bond
430 14, 4283144, 4283199, G03F 7095, G03F 709, B32B 310, B32B 2716
Patent
active
059621117
ABSTRACT:
A compressible printing plate is prepared by casting liquid photopolymerizable resin directly onto a compressible material having open cells on its surface. The photopolymerizable resin is incompletely cured by exposure to actinic radiation, preferably in the absence of a coverfilm covering the photopolymerizable resin. A further layer of photopolymerizable resin is then cast onto the incompletely cured resin, and the whole exposed to actinic radiation through an image-bearing transparency. A release composition may be placed between the image-bearing transparency and the photopolymerizable resin to provide for decreased adhesion therebetween. After development, an image-bearing laminate suitable as a printing plate for flexographic printing is obtained. The printing plate achieves excellent short and long term adhesion between the compressible layer and the photopolymer plate, without the necessity of a tie layer or adhesive therebetween.
REFERENCES:
patent: 4582777 (1986-04-01), Fischer et al.
patent: 5476712 (1995-12-01), Hartmann et al.
Cordani John L.
Hamilton Cynthia
Mac Dermid Incorporated
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