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US 5,672,401 AGranted
Lubricated sheet product and lubricant composition
AssigneeAluminum Company of America
InventorsJames R. Anglin, Julie A. Urbanski, Theresa S. Knighton
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AssigneeAluminum Company of America
InventorsJames R. Anglin, Julie A. Urbanski, Theresa S. Knighton
Estimating the term…
Metal sheet product, more particularly food can stock and beer and beverage can tab, end and body stock, is treated with a lubricant made by blending a mixture consisting essentially of about 25-90 wt.% of: (i) an ester selected from the group consisting of: bis(2-ethylhexyl)sebacate (or DOS), butyl stearate, and an acetylated, partially hydrogenated soybean oil; and (ii) about 10-75 wt.% of a blend consisting essentially of: (a) about 35-65 wt.% of a polyalphaolefin; and (b) about 65-35 wt.% of a microcrystalline wax; with a balance of incidental additives and impurities. With said composition applied thereon, in preferred average thicknesses between about 3-110 mg/ft.sup.2 for can tab stock and between about 3-35 mg/ft.sup.2 for can end and body stock, the invention produces prelubricated can stock in a suitable condition for conversion without further lubrication.
A bare or coated food, beer or beverage container stock comprising a metal sheet product having first and second surfaces at least one of which comes in contact with food, beer or a beverage and which is lubricated with a petrolatum-free composition made by blending a mixture comprising:
Food, beer or beverage can tab stock comprising a metal sheet product having a first and second surface, at least one surface of which contacts with food, beer or a beverage and which is treated with about 3-2000 mg/ft.sup.2 of a petrolatum free made by blending a mixture consisting essentially of:
Food, beer, or beverage can end or body stock comprising a metal sheet product having a first and second coated surface, at least one surface of which contacts with food, beer or a beverage and which is covered with about 3-35 mg/ft.sup.2 of a petrolatum free lubricant made by blending a mixture consisting essentially of:
Dependencies are inferred from the claim text.