Back to results
US 5,064,500 AGranted
Surface conditioner for formed metal surfaces
AssigneeHenkel Corporation
InventorSami B. Awad
Life of this patent
Estimating the term…
Loading patent…
Loading patent…
AssigneeHenkel Corporation
InventorSami B. Awad
Estimating the term…
Contact of acid or alkaline cleaned aluminum surfaces, particularly cans, with a water based composition containing a combination of (i) alkoxylated phosphate esters, (ii) ions of aluminum, zirconium, iron, tin, and/or cerium, (iii) a metal etching component, and (iv) a combination of alkoxylated alcohol and alkoxylated alkyl phenol emulsifiers, gives the surface after drying lowered surface friction without loss of high quality printability and lacquer adhesion and removes any brown spotting on the cans that may have developed during the cleaning or post-cleaning rinses. The cans after treatment are substantially free from any water breaks when rinsed with water. The foaming resistance and storage stability of the water based composition as described above, and of other similar surface friction reducing treatments for aluminum containers, may be advantageously increased by adding a biocidal agent, preferably hydrogen peroxide, and a combination of liquid paraffin, solid wax, and a high molecular weight fatty acid derivative(s) as antifoam agent.
A process comprising steps of:
A liquid composition of matter comprising water and the following components:
A liquid lubricant and surface conditioner composition for application to at least one exterior surface of a cleaned aluminum can to improve the mobility of the can when conveyed, said composition consisting essentially of a solution of water and:
A process comprising the steps of cleaning an aluminum can with an aqueous acidic or alkaline cleaning solution, drying the cleaned can, and subsequently conveying the cleaned and dried can via automatic conveying equipment to a location where it is lacquered or decorated by printing or both, wherein the improvement comprises contacting at least one exterior surface of said aluminum can, prior to the last drying of said exterior surface before automatic conveying, with a lubricant and surface conditioner composition containing an amount of biocidal material effective to prevent deterioration of the lubricant and surface conditioner composition during storage or use, thereby forming a film on the can surface to provide the surface of the can after drying with a coefficient of static friction that is not more than 1.5 and that is less than would be obtained on a can surface of the same type without such film coating.
A process comprising the steps of cleaning an aluminum can with an aqueous acidic or alkaline cleaning solution, drying the cleaned can, and subsequently conveying the cleaned and dried can via automatic conveying equipment to a location where it is lacquered or decorated by printing or both, wherein the improvement comprises contacting at least one exterior surface of said aluminum can, prior to the last drying of said exterior surface before automatic conveying, with a lubricant and surface conditioner composition containing an antifoam agent in sufficient amount to reduce foaming during the process to a lower level than would occur during identical use of a lubricant and surface conditioner reference composition in which water replaced the antifoam agent, thereby forming a film on the can surface to provide the surface of the can after drying with a coefficient of static friction that is not more than 1.5 and that is less than would be obtained on a can surface of the same type without such film coating.
Dependencies are inferred from the claim text.