Stock material or miscellaneous articles – Structurally defined web or sheet – Continuous and nonuniform or irregular surface on layer or...
Patent
1993-02-03
1994-11-22
Watkins, III, William P.
Stock material or miscellaneous articles
Structurally defined web or sheet
Continuous and nonuniform or irregular surface on layer or...
428143, 428148, 428344, 428256, 428263, 428457, 428909, 101485, 1014151, 101217, 101177, 1013821, B32B 516, B41F 3000
Patent
active
053667840
ABSTRACT:
Method of inhibiting corrosion of blanket cylinders used in offset printing operations, in which zinc is applied to the surfaces of printing blankets which contact the blanket cylinders, by application of zinc powder to an adhesive layer, or by impregnating zinc particles into the surface of the printing blanket, or by weaving zinc threads into the material of the printing blanket, or by attaching zinc foil to the printing blanket; together with printing blankets so prepared. The zinc acts to inhibit electrochemical corrosion and rusting of the blanket cylinder steel, by virtue of the fact that zinc is a sacrificial metal which is more chemically active than the iron in the steel, and is therefore oxidized in lieu of the iron.
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