Sheet metal container making – Method
Patent
1979-06-14
1984-05-01
Goldberg, Howard N.
Sheet metal container making
Method
72 42, B21D 5102
Patent
active
044458134
ABSTRACT:
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.
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patent: 3826675 (1974-07-01), Smith et al.
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Misra Surya K.
Openchowski Richard A.
Goldberg Howard N.
National Can Corporation
Rath Ralph R.
Stenzel Robert A.
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