Abstract: A cleaning system is provided for a printing press recirculation system, in which the cleaning system generates a plurality of bubbles within a fountain solution of the printing press recirculation system. The cleaning system includes (i) a first composition comprising a solid blend including (a) a first alkaline cleaning agent having a first alkaline strength, (b) a detergent salt, (c) a non-foaming emulsifying agent, and (d) a second alkaline cleaning agent having a second alkaline strength, in which the first alkaline strength is greater than the second alkaline strength; (ii) a second composition comprising one or more organic acids. Also provided are methods of cleaning a printing press recirculation system.

Abstract: A cleaning system is provided for a printing press recirculation system, in which the cleaning system generates a plurality of bubbles within a fountain solution of the printing press recirculation system. The cleaning system includes (i) a first composition comprising a solid blend including (a) a first alkaline cleaning agent having a first alkaline strength, (b) a detergent salt, (c) a non-foaming emulsifying agent, and (d) a second alkaline cleaning agent having a second alkaline strength, in which the first alkaline strength is greater than the second alkaline strength; (ii) a second composition comprising one or more organic acids. Also provided are methods of cleaning a printing press recirculation system.

Abstract: A non-aqueous composition cleaning system and method for a printing press recirculation system. The cleaning system comprises two powdered compositions, each composition being applied individually to the recirculation system in a two-step process. The first composition is prepared by dry blending 15-30% by weight of an alkaline cleaning agent, 15-30% by weight of a detergent salt, 15-30% by weight of an emulsifying/wetting agent, 15-30% by weight of a silicone antifoam and 0-10% by weight of a free-flowing silica additive. The second composition is prepared by dry blending 20-40% by weight of an organic acid and 60-80% by weight of a non-foaming detergent/wetting agent. The method comprises dissolving 10 to 40 grams of the first composition in 45 to 200 milliliters of water for each gallon of fountain solution and pouring the resultant solution into the printing press recirculation system. The resultant mixture is then allowed to recirculate for at least 30 minutes.

Abstract: A non-aqueous composition cleaning system and method for a printing press recirculation system. The cleaning system comprises two powdered compositions, each composition being applied individually to the recirculation system in a two-step process. The first composition is prepared by dry blending 15-30% by weight of an alkaline cleaning agent, 15-30% by weight of a detergent salt, 15-30% by weight of an emulsifying/wetting agent, 15-30% by weight of a silicone antifoam and 0-10% by weight of a free-flowing silica additive. The second composition is prepared by dry blending 20-40% by weight of an organic acid and 60-80% by weight of a non-foaming detergent/wetting agent. The method comprises dissolving 10 to 40 grams of the first composition in 45 to 200 milliliters of water for each gallon of fountain solution and pouring the resultant solution into the printing press recirculation system. The resultant mixture is then allowed to recirculate for at least 30 minutes.

Abstract: A non-liquid composition suitable as an alcohol replacement in fountain solutions prepared by dry blending 10-50% by weight of a film forming/humectant agent, 10-50% by weight of a plasticizer/hygroscopic agent, 0-5% by weight of an acetylinic surfactant, 0-10% by weight of an ethoxylated surfactant system, 0-1% by weight of a silicone glycol and 0-1% by weight of an anti-foaming agent.