Aluminum Company of America

Theresa S Knighton

James R Anglin

Neal Richard Dando

H Gray Reavis, Jr

Julie A Urbanski

William D Imbrogno

A novel fixed block polarized, specular reflective accessory apparatus and method are disclosed, including providing an infrared light generator, a polarizer to polarize infrared light generated by the infrared light generator, a fixed block having an aperture for receiving a sample, a first fixed position mirror on one side of the fixed block wherein the first fixed position mirror is positioned to receive incident infrared light parallel to the plane of reflection at a fixedly set angle, and a second fixed position mirror positioned to receive infrared light reflected from said sample. In one aspect, the fixedly set angle preferably is fixed at about 55.degree.. The novel fixed block polarized, specular reflective accessory apparatus and method provide a high efficiency, high accuracy, high quality and quantitative process control coating measurements for coating operations in manufacturing coated aluminum alloy sheet.

Polarized specular reflectance infrared apparatus and method

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.

Lubricated sheet product and lubricant composition

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.

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Newburgh, IN, United States of America

Theresa S Knighton