Process for the manufacture of photopolymer plates

Details Process for the manufacture of photopolymer plates Process for the manufacture of photopolymer plates

1991-02-13

1992-08-04

Hamilton, Cynthia

Radiation imagery chemistry: process, composition, or product th

Including control feature responsive to a test or measurement

430306, 430309, 430327, 430286, 430281, 430935, 430271, 430330, 430287, G03F 716, G03F 7033, G03F 700

Patent

active

051358271

ABSTRACT:
A continuous process for the manufacture of photopolymer plates having a precise and constant thickness in which the components of the photopolymer layer are melted in a screw extruder, the melt is conveyed to the sheet die by means of a gear pump and then into a roll gap of a calender, wherein the melt leaving the sheet die does not form a rotating bead in the calender gap downstream therefrom. The photopolymer plates prepared in this manner have high homogeneity of the components of the photopolymerizable mixture, have a highly precise and constant thickness, are transparent, do not tend to form specks and guarantee a long shelf life.

REFERENCES:
patent: 4369246 (1983-01-01), Chen et al.
patent: 4423135 (1983-12-01), Chen et al.
patent: 4927739 (1990-05-01), Taniguchi et al.
patent: 5015556 (1991-01-01), Martens
patent: 5049478 (1991-09-01), Koch et al.
"Der Extruder als Plastifiziereinheit", (The extruder as plasticizing unit), VDI-Verlap, Dusseldorf, 1977, pp. 115, 161-170.

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