Aluminum sheet coated with a lubricant comprising dioctyl sebacate and petrolatum
AssigneeAluminum Company of America
InventorsJames R. Anglin, Theresa S. Knighton, H. Gray Reavis, Jr.
Life of this patent
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Abstract
Metal sheet product, more particularly food or beverage can tab and end stock, is treated with a lubricant blend consisting essentially of about 25-90 wt % bis(2-ethylhexyl)sebacate or DOS; about 10-75 wt % petrolatum and a balance of incidental additives and impurities prior to coiling for transport and storage. With said composition applied hereon, in preferred average thicknesses between about 10-110 mg/ft.sup.2 for aluminum can tab stock and up to about 35 mg/ft.sup.2 for aluminum can end stock, the invention produces prelubricated can stock in a suitable condition for conversion into can tabs and/or can ends without further lubrication.
Claims26
A metal sheet product suitable for making into food or beverage can tab stock, said tab stock having a first and second outer surface, at least one of said surfaces being lubricated with about 10-300 mg/ft.sup.2, of a blended composition comprising:
- (a) about 40-90% by weight of bis(2-ethylhexyl) sebacate;
- and
- (b) about 10-60 wt % petrolatum.
Beverage can tab stock made of metal sheet product and having a first and second outer surface, at least one of said surfaces being treated with about 10-300 mg/ft.sup.2 of a lubricant blend consisting essentially of:
- (a) about 40-90 wt % bis(2-ethylhexyl) sebacate;
- and
- (b) about 10-60 wt % petrolatum.
Beverage can end stock made of a metal sheet product and having a first and second outer surface, at least one of said surfaces being treated with about 4-35 mg/ft.sup.2 of a lubricant blend consisting essentially of:
- (a) about 40-90 wt % bis(2-ethylhexyl) sebacate;
- and
- (b) about 10-60 wt % petrolatum.
A metal sheet product suitable for making into food or beverage can end stock, said end stock having a first and second outer surface, at least one of said surfaces being lubricated with about 4-35 mg/ft.sup.2 of a blended composition comprising:
- (a) about 40-90% by weight of bis(2-ethylhexyl) sebacate;
- and
- (b) about 10-60 wt % petrolatum.
Dependencies are inferred from the claim text.