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US 11,634,606 B2Granted
Apparatus and methods for alternative coatings applicable to metal
AssigneeG3 Enterprises, Inc.
InventorsJohn Cunningham, Kenneth Metzger, Timmy Sath Ka
Life of this patent
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Abstract
Apparatus and methods for alternative coatings applicable to metal are disclosed. According to one embodiment, an apparatus comprises a composition having, an ethylene acrylic acid copolymer; a neutralizing base; and water. The ethylene acrylic acid copolymer is about 15 percent to about 45 percent by weight concentration of the water. The apparatus further comprises metal coated with the composition.
Claims18
An apparatus, comprising:
- a sheet metal having an exterior side and an interior side;
- a first coating layer disposed over the exterior side of the sheet metal, the first coating layer comprising:
- a first ethylene acrylic acid copolymer at least partially neutralized with a first neutralizing base;
- and
- a first pigment comprising a white pigment;
- a second coating layer disposed over the first coating layer and comprising:
- a second ethylene acrylic acid copolymer at least partially neutralized with a second neutralizing base;
- and
- a second pigment;
- an over-varnish layer disposed over the second coating layer and comprising:
- a third ethylene acrylic acid copolymer at least partially neutralized with a third neutralizing base;
- and
- a first wax;
- and
- an interior lacquer layer disposed over the interior side of the sheet metal, the interior lacquer layer comprising:
- a fourth ethylene acrylic acid copolymer at least partially neutralized with a fourth neutralizing base;
- and
- a second wax,
- wherein each of the first coating layer, the second coating layer, the over-varnish layer, and the interior lacquer layer comprises a single type of polymer,
- wherein an acrylic acid content in the single type of polymer is from 19.5 to 21.5 weight percent based upon a total weight of the single type of polymer, and
- wherein the sheet metal, the first coating layer, the second coating layer, the over-varnish layer, and the interior lacquer layer were elongated in a deep draw process to form a screw cap closure.
18 more elements
Dependencies are inferred from the claim text.