Method of recovering oily contaminants from printing machines, plates and related equipment
AssigneeDuPont (U.K.) Limited
InventorsChristopher W. Folkard, Gary A. J. Goddard
Life of this patent
Estimating the term…
Abstract
A method of removing inks and other oily contaminants from printing machines, printing plates and offset blankets using a cleaning aid that is based on a C.sub.6 or higher alkyl ester of a fatty acid, preferably containing 8 to 22 carbon atoms. The cleaning aid does not significantly degrade images on printing plates.
Claims8
A method of removing oil contaminants formed on surfaces of printing machines, printing plates and associated equipment which comprises the step of contacting the surface with a liquid cleaning aid comprising at least one C.sub.8 or higher alkyl ester of a fatty acid in an amount of at least 30% by volume of the cleaning aid, said cleaning aid being characterized by exhibiting a substantially reduced tendency to degrade images on printing plates as compared to similar compositions containing similar amounts of C.sub.1 to C.sub.5 alkyl esters of fatty acids.
Dependencies are inferred from the claim text.