APPLICATION OF DESIGNS TO PORTION OF FOOD CONTAINER
The present disclosure describes a process for applying a design to a sheet metal for use in a portion of a container, for example a cap or an end of a food container. Embodiments provide for applying a multi-color design in a single printing step to a sheet of metal to create a printed metal sheet that can then be rolled into a printed coil or cut to length. The printed metal sheet can then be cut pressed into can ends or caps. The ends or caps with the multi-color design can then be used to manufacture containers, such as a beverage container.
1 . A method of generating a multi-color design on a metal sheet, the method comprising:
providing an aluminum alloy sheet metal for use in creating a cap or can end for a container;
printing a multi-color design on a first surface of the sheet metal to generate a printed sheet metal, wherein the printing comprises applying at least two different colors to create the multi-color design; and
drawing and/or curing the multi-color design printed on the aluminum alloy sheet metal.
2 . The method of claim 1 , further comprising:
forming a three-dimensional feature in the cap or can end, the multi-color design being in register with the three-dimensional feature to provide a perception to a viewer that the multi-color design in three-dimensional.
3 . The method of claim 1 , further comprising:
forming a three-dimensional feature in the cap or can end, the multi-color design being in register with the three-dimensional feature, whereby an element of the three-dimensional design is positioned in a raised area of the cap or can end.
4 . The method of claim 3 , wherein a further element of the three dimensional design is positioned in a lowered area of the cap or can end.
5 . The method of claim 1 , wherein at least two different colors of the multi-color design are printed simultaneously and without intermediate ink curing.
6 . The method of claim 1 , wherein the aluminum alloy sheet metal in the providing step is in the form of a coil and further comprising after the drawing and/or curing step:
recoiling the printed aluminum alloy sheet metal.
7 . The method of claim 1 , wherein the aluminum alloy sheet metal in the providing step is in the form of a coil and further comprising after the drawing and/or curing step:
cutting the printed aluminum alloy sheet metal to a selected length to form a plurality of discrete sheets.
8 . The method of claim 1 , wherein the aluminum alloy sheet comprises registration marks to align the aluminum alloy sheet metal in a subsequent pressing and/or stamping operation.
9 . The method of claim 1 , wherein ink in the multi-color design is electron beam and/or ultraviolet light curable and further comprising:
applying, after curing of the ink in the multi-color design, an electron beam and/or ultraviolet light curable coating to the multi-color design; and
thereafter curing the coating.
10 . The method of claim 1 , wherein ink in the multi-color design is electron beam and/or ultraviolet light curable and further comprising:
applying, before curing of the ink in the multi-color design, an electron beam and/or ultraviolet light curable coating to the multi-color design; and
thereafter substantially simultaneously curing the ink and coating.
11 . A food container, comprising:
an aluminum alloy sidewall;
an aluminum alloy first end; and
an aluminum alloy second end, the first and second ends being opposed to one another, wherein at least one of the first and second ends comprise a multi-colored design.
12 . The container of claim 11 , wherein the first end is integrally formed with the sidewall, wherein the second end is discrete from the sidewall, and wherein the multi-colored design is on the second end.
13 . The container of claim 12 , wherein the second end comprises a three-dimensional feature, the multi-color design being in register with the three-dimensional feature, whereby an element of the three-dimensional design is positioned in a raised area of the second end.
14 . The container of claim 11 , wherein the first end is integrally formed with the sidewall, wherein the second end is discrete from the sidewall, wherein the multi-colored design is on the first end, and wherein the first end comprises a three-dimensional feature, the multi-color design being in register with the three-dimensional feature, whereby an element of the three-dimensional design is positioned in a raised area of the first end.
15 . The container of claim 13 , wherein the second end is free of a primer between the multi-color design and the aluminum alloy in the second end.
16 . The container of claim 13 , wherein the second end comprises a primer between the multi-color design and the aluminum alloy in the second end.
17 . The container of claim 13 , wherein a protective coating is located on an exterior of the second end such that the multi-color design is positioned between the aluminum alloy in the second end and the protective coating.
18 . The container of claim 13 , wherein an EB and/or UV cured coating is located on the second end such that the EB and/or UV cured coating is positioned between the aluminum alloy in the second end and the multi-color design.
19 . The container of claim 17 , wherein the protective coating is electron beam and/or ultraviolet light curable.
20 . A system, comprising:
an unwinding device configured to unwind a coil of an aluminum alloy sheet;
a printer configured to print a multi-color design on the uncoiled aluminum alloy sheet; and
a curing device configured to cure substantially simultaneously differently colored inks in the multi-colored design to produce printed aluminum alloy sheet.