National Can Corporation

Other

Surya K Misra

Narayan Das

Richard A Openchowski

Seung W Lyu

Wayne D Niemeyer

William Hessel

A method of forming a drawn and ironed aluminum container is disclosed herein. The aluminum stock material is initially provided with a thin layer of a particular lubricant applied to one or both surfaces thereof. The lubricant is unemulsified (i) peanut oil and/or (ii) certain oleic acid esters of aliphatic polyhydric alcohols. The method contemplates applying the thin layer of said lubricant to an aluminum stock, cutting a disc and forming a drawn and ironed container utilizing said lubricated disc without additional lubricant being applied to the tooling.

Method of forming seamless drawn and ironed containers of aluminum stock

A precoated stock material for use in forming a drawn and ironed container and a method of forming such container is disclosed herein. The stock material initially has a layer of lubricant applied to one or both surfaces of the metal base with the lubricant consisting essentially of a fatty acid ester of a mono or polyhydric alcohol and having a distribution of less than 3 mg./in..sup.2. The method contemplates applying the layer of lubricant to a metal stock, such as aluminum, black plate or tinplate, cutting a disc from the metal stock, and transforming the disc into a drawn and ironed container without additional lubricant being applied to the tooling.

Method of forming seamless container

A stock material for producing seamless containers from a black plate base includes applying a layer of insoluble crystalline phosphate to each surface of the black plate and subsequently producing a thin film of organic lubricating material on the exposed surfaces of the phosphate layers so that a drawn and ironed container can be produced from a flat blank without the use of any additional lubricants during fabrication. The weight of the phosphate layer for each surface of the black plate base is preferably less than 100 milligrams per square foot, while the weight of lubricating film is on the order of 70 to 360 milligrams per square foot. In the preferred embodiment, the phosphate layer is preferably in the range of 20 to 35 milligrams per square foot, and the lubricant layer is on the order of 70 to 180 milligrams per square foot.

Coated sheet material and container therefrom

A method of producing stock material wherein a steel base is provided with a layer of tin thereon, the tin-layered steel is then cold rolled and thereafter heated to a temperature above 250.degree. F. but below the melting point of tin; in a second method of producing stock material, the stock is heated above the melting point of tin; also included are methods of producing containers utilizing stock produced by each of said stock producing methods; further included is another method of producing containers wherein a steel base is provided with a layer of tin thereon, heated to a temperature between 250.degree. F. to below the melting point of tin, and thereafter formed into a seamless container.

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Naperville, IL, United States of America

Surya K Misra