Laser engraving to form printing surfaces

Details Laser engraving to form printing surfaces Laser engraving to form printing surfaces

1993-09-02

1995-10-31

Utech, Benjamin

Coating processes

Direct application of electrical, magnetic, wave, or...

Pretreatment of substrate or post-treatment of coated substrate

427271, 4273855, B05D 300

Patent

active

054627745

ABSTRACT:
Described are engravable coating compositions, in particular for printing cylinders, which comprise at least one resin capable of undergoing coking and producing only a very small proportion of products which are liquid at the temperature at which it decomposes, the main products of decomposition thereof being solid or gaseous at that temperature;
and in general a reinforcing particulate filler having a small proportion of edges having acute projecting angles, said filler generally representing a proportion of from 5 to 75% of the resin+filler volume.
The process for coating the cylinders comprises:
mixing the resin and the filler and degassing the mixture produced;
the coating operation in the true sense and drying the layer or successive layers deposited; and
baking the coating.

REFERENCES:
patent: 1377509 (1921-05-01), Novotny
patent: 1377519 (1921-05-01), Novotny
patent: 3267308 (1966-08-01), Geffrede
patent: 4007680 (1977-02-01), Pfleger et al.
patent: 4275142 (1981-06-01), Hasaka et al.
patent: 4526649 (1985-07-01), Gupto et al.
patent: 4757117 (1988-07-01), Moss
patent: 5332650 (1994-07-01), Murata et al.

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