JP2024026261A - Aluminum flat rolled products with high recycled content for light gauge packaging solutions, and related methods - Google Patents

Abstract

To provide aluminum alloy capsules for packaging and/or producing a beverage, and methods for producing the capsules and other packaging products.SOLUTION: An aluminum alloy capsule comprises: a dome-shaped body comprising a lip that extends outwardly from the body; and a cover secured with the lip. At least one of the body and the cover comprises a 3xxx series aluminum alloy. The 3xxx series aluminum alloy comprises at least 50 wt.% of recycled aluminum, and is processed to produce an O temper alloy.SELECTED DRAWING: Figure 1

Description

CROSS-REFERENCE TO RELATED APPLICATIONS This application claims the benefit of U.S. Provisional Patent Application No. 62/909,291, filed October 2, 2019, which is incorporated herein by reference in its entirety.

The present disclosure relates to aluminum alloy products and properties of such aluminum alloy products. The present disclosure further relates to high recycled content aluminum beverage products and methods of manufacturing and processing the same.

Beverage capsules are well known and widely used. Aluminum can provide food packaging with excellent stiffness, formability, and gas and light barrier properties. The aluminum foil used for capsule packaging includes soft annealed AA8011A alloy. Incumbent capsule alloys have low recycled content. Elements such as Mg and Mn contained in recycled aluminum, and elements that can be accumulated through recycling such as Fe, can have a negative impact on properties such as fracture behavior and ear formation. The use of recycled aluminum is environmentally friendly. Creating new metal from recycled aluminum requires only 5% of the energy required to produce the primary aluminum used in aluminum alloys. Reducing the amount of packaging material by reducing material thickness can have a positive impact on the environment. However, reducing the thickness of the packaging material may limit these efforts by disrupting the balance between the packaging material's formability and mechanical resistance. 3xxx series aluminum alloys, including H19 tempered 3004/3104, are common packaging materials for beverage cans. However, the characteristics of the 3xxx series aluminum alloy used in beverage cans, which typically have a gauge of 0.23 to 0.35 mm, a tensile strength of approximately 260 MPa, and an elongation at break of approximately 4%, are similar to those of the aluminum used in beverage capsules. Compared with the properties of alloy materials, they are in different functional windows.

The embodiments of the invention encompassed are defined by the claims, rather than this Summary. This Summary is a high-level overview of various aspects of the invention and introduces some of the concepts that are further described in the Detailed Description section below. This Summary is not intended to identify key or essential features of the claimed subject matter, nor is it intended to be used alone in determining the scope of the claimed subject matter. Not yet. The subject matter should be understood by reference to the entire specification, some or all of the drawings, and appropriate portions of each claim.

Aluminum alloy capsules are described herein. In some embodiments, the aluminum alloy capsule includes a domed body including a lip and a cover secured by the lip, the lip extending outwardly from the body. The body defines a cavity configured to contain a substance for preparing a beverage. The cover can form a seal around the lip of the body to seal the substance within the body. In some embodiments, at least one of the body and the cover includes a 3xxx series aluminum alloy. In some embodiments, the 3xxx series aluminum alloy comprises AA3104.

The aluminum alloy capsules described herein are superior to conventional aluminum alloy capsules by using more recycled content in the aluminum alloy and enabling future downgauge steps through a new balance of formability and strength properties. can be improved. In certain embodiments, the 3xxx series aluminum alloy includes at least 50% by weight recycled aluminum. Optionally, the 3xxx series aluminum alloy can include at least 80% by weight recycled aluminum. In some cases, recycled aluminum includes at least one of process run-around scrap, post-manufacturing scrap, or post-consumer scrap aluminum.

In some cases, a 3xxx series aluminum alloy may be processed to produce an O-tempered alloy. In some embodiments, the aluminum alloy capsule includes a thickness of about 30 μm to about 170 μm (eg, about 50 μm to less than about 150 μm, or about 75 μm to about 120 μm). Optionally, the aluminum alloy capsule can include a thickness of about 70 μm to about 120 μm (eg, about 70 μm to less than about 110 μm, or about 80 μm to about 100 μm).

Further described herein is a method of manufacturing aluminum alloy products with recycled content, such as aluminum beverage capsules. This method involves melting recycled aluminum into liquid metal, adding alloying elements to the liquid metal to form a modified liquid metal, and casting the modified liquid metal to form a cast aluminum alloy. heating the cast aluminum alloy; hot rolling the cast aluminum alloy to produce a rolled product with a thickness of 1.5 mm to 10 mm; and cold rolling the rolled product to produce an aluminum alloy product. including manufacturing. In some examples, the alloying element includes manganese. In some examples, the alloying element includes magnesium. Optionally, alloying elements may include manganese and magnesium. Optionally, the alloying element may further include silicon. In certain examples, heating the cast aluminum alloy may include homogenizing the cast aluminum alloy. Optionally, the method may further include annealing the aluminum alloy product to produce an O-tempered product. In some examples, the method may further include cleaning the aluminum alloy product with a mildly alkaline or acidic agent. In some examples, the modified liquid metal can include at least 50% by weight recycled aluminum (eg, at least about 60% by weight recycled aluminum, or at least about 75% by weight recycled aluminum). Optionally, the modified liquid metal can include at least 80% by weight recycled aluminum (eg, at least about 85% by weight recycled aluminum, or at least about 90% by weight recycled aluminum). Recycled aluminum may include manufacturing process scrap, post-manufacturing scrap, and/or post-consumer scrap aluminum.

Aluminum alloy products prepared according to the methods described herein are also described herein. The aluminum alloy may include a 3xxx series aluminum alloy. The aluminum alloy product may be a sheet. Aluminum alloy products can be used for packaging. In some examples, the aluminum alloy product is packaging for preparing beverages. In a particular example, the aluminum alloy product is a beverage capsule.

Achieving consistent levels of strength and elongation while achieving the otic properties of capsule packaging can be difficult. The aluminum alloys described herein can exhibit good ear development and mechanical properties even when down-gauged. Aluminum alloy products can exhibit less than 2.0% selvage with O temper. In a particular example, the aluminum alloy product exhibits less than 1.5% selvage in the O temper. The aluminum alloy article can include a thickness of about 30 μm to about 170 μm (eg, about 50 μm to less than about 150 μm, or about 80 μm to about 140 μm). In some cases, the aluminum alloy article comprises a thickness of about 70 μm to about 120 μm (eg, about 75 μm to less than about 115 μm, or about 90 μm to about 110 μm). When the aluminum alloy product is O-tempered, the aluminum alloy product can have an ultimate tensile strength of about 165 MPa to about 190 MPa (eg, about 170 MPa to less than about 185 MPa, or about 175 MPa to about 180 MPa). In some examples, when the aluminum alloy product is O-tempered, the aluminum alloy product has a yield strength of 70 MPa to 90 MPa (e.g., from about 75 MPa to less than about 90 MPa, or from about 80 MPa to about 85 MPa) at 0.2% strain. has. If the aluminum alloy product is O tempered, the aluminum alloy product may have a total elongation of at least 10% using the A100 test geometry.

Other objects and advantages of the invention will become apparent from the following detailed description of non-limiting examples.

This specification refers to the following accompanying drawings, and the use of like reference numbers in different drawings is intended to indicate similar or analogous elements.

FIG. 3A is a side view of a beverage capsule according to an example of the present disclosure. B is a perspective view of a beverage capsule according to an example of the present disclosure. FIGS. 2A and 2B are perspective views of a beverage capsule according to an example of the present disclosure. 1 is an exploded view of a beverage capsule according to an example of the present disclosure; FIG.

Described herein are aluminum alloy products, such as aluminum alloy capsules, aluminum alloy products with high recycled content, and methods of making those products. The aluminum alloy products and methods described herein provide improved aluminum alloy products with reduced raw material usage. For example, the aluminum alloy products described herein include recycled aluminum (e.g., at least 50% by weight or at least 80% by weight recycled aluminum) compared to conventional aluminum alloy products used in aluminum alloy capsules. obtain. The aluminum alloy products described herein have superior strength properties compared to capsules and other packaging products made from conventional 8xxx series aluminum alloys.

In some examples, an aluminum alloy capsule may include a domed body and a cover. The body defines a cavity configured to contain a substance for preparing a beverage. The capsule may include a 3xxx series aluminum alloy. Optionally, the 3xxx series aluminum alloy may include at least 50% by weight recycled aluminum.

Definition and explanation:
As used herein, the terms "invention", "the invention", "this invention" and "the present invention" refer to the subject matter of this patent application. and the following claims broadly. It should be understood that statements containing these terms are not intended to limit the subject matter described herein, nor do they limit the meaning or scope of the claims that follow.

Reference is made herein to alloys identified by aluminum industry designations such as "series" or "3xxx." For an understanding of the most commonly used numbering systems for naming and identifying aluminum and its alloys, see International Alloy Designations and Chemical Composition Limits for Wrought Aluminum and Wrought Al. uminum Alloys” or “Registration Record of Aluminum Association Alloy Designations” and Chemical Compositions Limits for Aluminum Alloys in the Form of Castings and Ingot (both published by the Aluminum Association).

As used herein, the meanings of "a," "an," or "the" include singular and plural referents unless the context clearly dictates otherwise.

As used herein, a plate generally has a thickness greater than about 15 mm. For example, the plate may be greater than about 15 mm, greater than about 20 mm, greater than about 25 mm, greater than about 30 mm, greater than about 35 mm, greater than about 40 mm, greater than about 45 mm, greater than about 50 mm, or greater than about 100 mm. May refer to aluminum products with thickness.

As used herein, a sheet (also referred to as a sheet plate) typically has a thickness of about 4 mm to about 15 mm. For example, the sheet can have a thickness of about 4 mm, about 5 mm, about 6 mm, about 7 mm, about 8 mm, about 9 mm, about 10 mm, about 11 mm, about 12 mm, about 13 mm, about 14 mm, or about 15 mm.

As used herein, sheet typically refers to an aluminum product having a thickness of less than about 4 mm. For example, the sheet can have a thickness of less than about 4 mm, less than about 3 mm, less than about 2 mm, less than about 1 mm, less than about 0.5 mm, less than about 0.3 mm, or less than about 0.1 mm.

As used herein, the term "foil" refers to an alloy thickness in the range of up to about 0.2 mm (i.e., 200 microns (μm)). For example, the foil may have a thickness of up to 10 μm, 20 μm, 30 μm, 40 μm, 50 μm, 60 μm, 70 μm, 80 μm, 90 μm, 100 μm, 110 μm, 120 μm, 130 μm, 140 μm, 150 μm, 160 μm, 170 μm, 180 μm, 190 μm, or 200 μm. may have.

As used herein, terms such as "cast metal product," "cast product," and "cast aluminum alloy product" are interchangeable and refer to direct chill casting (direct chill co-casting). ) or semi-continuous casting, continuous casting (including, for example, by the use of twin-belt casters, twin-roll casters, block casters, or any other continuous casting machine), electromagnetic casting, hot-top casting , or any other foundry method.

As used herein, the term metal product may refer to a cast product of any suitable shape or size, as appropriate.

In this application, reference is made to the temper or condition of the alloy. To understand the description of the most commonly used alloy tempers, please refer to American National Standards (ANSI) H35 on Alloy and Temper Design Systems. F-state or tempered refers to the as-fabricated aluminum alloy. O-state or tempered refers to the aluminum alloy after annealing. Hxx state or temper, also referred to herein as H temper, refers to a non-heat treated aluminum alloy after cold rolling, with or without heat treatment (e.g., annealing).

All ranges disclosed herein are to be understood to encompass any and all subranges subsumed therein. For example, the stated range "1-10" should be considered to include any and all subranges between and including the minimum value of 1 and the maximum value of 10. That is, all subranges start with a minimum value of 1 or more, eg, 1 to 6.1, and end with a maximum value of 10 or less, eg, 5.5 to 10.

The following aluminum alloys are described in terms of elemental composition in weight percent (wt%) based on the total weight of the alloy. In the specific example of each alloy, the balance is aluminum and the maximum total weight percent of impurities is 0.15%.

As used herein, the term recycled scrap (eg, recycled stock) can refer to a collection of recycled metals. Recycled scrap may be sourced from metal manufacturing facilities (e.g., metal foundry facilities), metal processing facilities (e.g., production facilities that use metal products to manufacture consumer goods), post-consumer sources (e.g., regional recycling facilities), or other sources. may include recycled materials from any suitable source, such as a source of Certain aspects of the present disclosure may be well suited for recycled scrap from sources other than metal manufacturing facilities. This is because such recycled scrap is likely to contain a mixture of alloys or be contaminated with other impurities or elements (such as paints or coatings). Recycled scrap includes recycled sheet aluminum products (e.g., aluminum pans and pans), recycled cast aluminum products (e.g., aluminum grills and wheel rims), UBC scrap (e.g., used beverage cans), aluminum wire, and others. can refer to recycled aluminum, such as aluminum materials.

As used herein, the term ear development in relation to measurements refers to the average ear development of cup height.

Aluminum Alloys and Products Described herein are aluminum alloy products and methods of making aluminum alloy products. The products described herein include, for example, aluminum alloy capsules. Such products can be used, for example, as beverage capsules.

In some examples, the aluminum alloy capsule includes a domed body that includes a lip. The lip extends outwardly from the body. The body defines a cavity configured to house a substance for preparing a beverage. The capsule may further include a cover secured with a lip. The cover can form a seal around the lip of the body to seal the substance within the body. The substances contained within the capsule for the preparation of beverages may include coffee, tea, cocoa, dairy-based beverage concentrates, lemonade, cider, and fruit-based beverages, among others.

In some examples, the body may include a 3xxx series aluminum alloy. In some examples, the cover may also include a 3xxx series aluminum alloy. Optionally, the body and cover may include a 3xxx series aluminum alloy. The 3xxx series aluminum alloys for the body and cover may be the same type of alloy or different types of alloy.

Aluminum alloys for use in the products and methods described herein include 3xxx series aluminum alloys. Suitable 3xxx series aluminum alloys include, for example, AA3002, AA3102, AA3003, AA3103, AA3103A, AA3103B, AA3203, AA3403, AA3004, AA3004A, AA3104, AA3204, AA3304, AA3005, AA3005A, A A3105, AA3105A, AA3105B, AA3007, AA3107, AA3207, AA3207A, AA3307, AA3009, AA3010, AA3110, AA3011, AA3012, AA3012A, AA3013, AA3014, AA3015, AA3016, AA3017, AA3019, AA3020, AA3021, AA 3025, AA3026, AA3030, AA3130, and AA3065.

In some examples, the aluminum alloy products described herein contain about 0.1% to about 2.0% (e.g., about 0.1% to about 1.5%), based on the total weight of the alloy. , or about 0.5% to about 1.5%). For example, aluminum alloy has 0.1%, 0.11%, 0.12%, 0.13%, 0.14%, 0.15%, 0.16%, 0.17%, 0.18% , 0.19%, 0.2%, 0.21%, 0.22%, 0.23%, 0.24%, 0.25%, 0.26%, 0.27%, 0.28% , 0.29%, 0.3%, 0.31%, 0.32%, 0.33%, 0.34%, 0.35%, 0.36%, 0.37%, 0.38% , 0.39%, 0.4%, 0.41%, 0.42%, 0.43%, 0.44%, 0.45%, 0.46%, 0.47%, 0.48% , 0.49%, 0.5%, 0.51%, 0.52%, 0.53%, 0.54%, 0.55%, 0.56%, 0.57%, 0.58% , 0.59%, 0.6%, 0.61%, 0.62%, 0.63%, 0.64%, 0.65%, 0.66%, 0.67%, 0.68% , 0.69%, 0.7%, 0.71%, 0.72%, 0.73%, 0.74%, 0.75%, 0.76%, 0.77%, 0.78% , 0.79%, 0.8%, 0.81%, 0.82%, 0.83%, 0.84%, 0.85%, 0.86%, 0.87%, 0.88% , 0.89%, 0.9%, 0.91%, 0.92%, 0.93%, 0.94%, 0.95%, 0.96%, 0.97%, 0.98% , 0.99%, 1.0%, 1.1%, 1.2%, 1.3%, 1.4%, 1.5%, 1.6%, 1.7%, 1.8% , 1.9%, or 2.0% Mn. All are expressed in % by weight.

In some examples, the aluminum alloy product contains about 0.1% to about 2.0% (e.g., about 0.1% to about 1.5%, or about 0.5%), based on the total weight of the alloy. % to about 1.5%). For example, aluminum alloy products are 0.1%, 0.11%, 0.12%, 0.13%, 0.14%, 0.15%, 0.16%, 0.17%, 0.18% %, 0.19%, 0.2%, 0.21%, 0.22%, 0.23%, 0.24%, 0.25%, 0.26%, 0.27%, 0.28 %, 0.29%, 0.3%, 0.31%, 0.32%, 0.33%, 0.34%, 0.35%, 0.36%, 0.37%, 0.38 %, 0.39%, 0.4%, 0.41%, 0.42%, 0.43%, 0.44%, 0.45%, 0.46%, 0.47%, 0.48 %, 0.49%, 0.5%, 0.51%, 0.52%, 0.53%, 0.54%, 0.55%, 0.56%, 0.57%, 0.58 %, 0.59%, 0.6%, 0.61%, 0.62%, 0.63%, 0.64%, 0.65%, 0.66%, 0.67%, 0.68 %, 0.69%, 0.7%, 0.71%, 0.72%, 0.73%, 0.74%, 0.75%, 0.76%, 0.77%, 0.78 %, 0.79%, 0.8%, 0.81%, 0.82%, 0.83%, 0.84%, 0.85%, 0.86%, 0.87%, 0.88 %, 0.89%, 0.9%, 0.91%, 0.92%, 0.93%, 0.94%, 0.95%, 0.96%, 0.97%, 0.98 %, 0.99%, 1.0%, 1.1%, 1.2%, 1.3%, 1.4%, 1.5%, 1.6%, 1.7%, 1.8 %, 1.9%, or 2.0% Mg. All are expressed in % by weight.

In some examples, the aluminum alloy product contains up to about 1.5% by weight (e.g., about 0.01% to about 1.50%, about 0.20% to about 1.5% by weight, based on the total weight of the alloy). 0%, or about 0.3% to about 0.9%). For example, aluminum alloy products are 0.01%, 0.02%, 0.03%, 0.04%, 0.05%, 0.06%, 0.07%, 0.08%, 0.09 %, 0.10%, 0.11%, 0.12%, 0.13%, 0.14%, 0.15%, 0.16%, 0.17%, 0.18%, 0.19 %, 0.20%, 0.21%, 0.22%, 0.23%, 0.24%, 0.25%, 0.26%, 0.27%, 0.28%, 0.29 %, 0.30%, 0.31%, 0.32%, 0.33%, 0.34%, 0.35%, 0.36%, 0.37%, 0.38%, 0.39 %, 0.40%, 0.41%, 0.42%, 0.43%, 0.44%, 0.45%, 0.46%, 0.47%, 0.48%, 0.49 %, 0.50%, 0.51%, 0.52%, 0.53%, 0.54%, 0.55%, 0.56%, 0.57%, 0.58%, 0.59 %, 0.60%, 0.61%, 0.62%, 0.63%, 0.64%, 0.65%, 0.66%, 0.67%, 0.68%, 0.69 %, 0.70%, 0.71%, 0.72%, 0.73%, 0.74%, 0.75%, 0.76%, 0.77%, 0.78%, 0.79 %, 0.80%, 0.81%, 0.82%, 0.83%, 0.84%, 0.85%, 0.86%, 0.87%, 0.88%, 0.89 %, 0.90%, 0.91%, 0.92%, 0.93%, 0.94%, 0.95%, 0.96%, 0.97%, 0.98%, 0.99 %, 1.0%, 1.01%, 1.02%, 1.03%, 1.04%, 1.05%, 1.06%, 1.07%, 1.08%, 1.09 %, 1.10%, 1.11%, 1.12%, 1.13%, 1.14%, 1.15%, 1.16%, 1.17%, 1.18%, 1.19 %, 1.20%, 1.21%, 1.22%, 1.23%, 1.24%, 1.25%, 1.26%, 1.27%, 1.28%, 1.29 %, 1.30%, 1.31%, 1.32%, 1.33%, 1.34%, 1.35%, 1.36%, 1.37%, 1.38%, 1.39 %, 1.40%, 1.41%, 1.42%, 1.43%, 1.44%, 1.45%, 1.46%, 1.47%, 1.48%, 1.49 %, or 1.50% Si. In some cases, Si is not present in the alloy (ie, 0%). All are expressed in % by weight.

Optionally, the aluminum alloy products described herein contain impurities in an amount of no more than 0.05%, no more than 0.04%, no more than 0.03%, no more than 0.02%, or no more than 0.01%. It may further contain other trace elements, which may be called. These impurities may include, but are not limited to, Zr, Sn, Ga, Ca, Bi, Na, Pb or combinations thereof. Therefore, Zr, Sn, Ga, Ca, Bi, Na, or Pb is present in an amount of 0.05% or less, 0.04% or less, 0.03% or less, 0.02% or less, or 0.01% or less. (in total amount) may be present in the alloy. In some cases, the sum of all impurities does not exceed 0.15% (eg, 0.10%). All are expressed in % by weight. The remaining percentage of the alloy may be aluminum.

Optionally, the aluminum alloy products described herein contain about 50% or more (e.g., greater than about 60%, greater than about 70%, or greater than about 80%) by weight, based on the total weight of the alloy. ) amount of recycled scrap. For example, aluminum alloy products are 50%, 51%, 52%, 53%, 54%, 55%, 56%, 57%, 58%, 59%, 60%, 61%, 62%, 63%, 64 %, 65%, 66%, 67%, 68%, 69%, 70%, 71%, 72%, 73%, 74%, 75%, 76%, 77%, 78%, 79%, 80%, 81%, 82%, 83%, 84%, 85%, 86%, 87%, 88%, 89%, 90%, 91%, 92%, 93%, 94%, 95%, 96%, 97% , 98%, or 99%. All are expressed in % by weight.

In some cases, recycled scrap includes recycled aluminum scrap, such as used beverage can (UBC) scrap. For example, UBC scrap is typically made from various alloys, such as metal from can bodies (e.g., AA3104, AA3004, or other 3xxx series aluminum alloys) and can ends (e.g., AA5182 or other 5xxx series aluminum alloys). Contains mixtures of metals. Other recycled scraps include other alloy mixtures. Additionally, recycled scrap may contain other impurities and alloying elements that become liquid metal when the recycled scrap is melted. Recycled aluminum may include manufacturing process scrap, post-manufacturing scrap, and/or post-consumer scrap aluminum. Manufacturing process scrap is generated during the manufacture of aluminum products (eg, ingot scalping and edge trimming during the manufacture of aluminum sheet). Post-manufacturing scrap is generated during the manufacturing process of aluminum alloy products (e.g., manufacturing waste from automobile parts or waste from punching beverage cans). Post-consumer is scrap that is generated after a product has been used by a consumer (eg, used beverage cans).

A variety of products can be manufactured including the aluminum alloys described herein. The aluminum alloy products described herein may have any suitable gauge. In some examples, the aluminum alloy product may be a sheet. Optionally, the sheet gauge is less than about 240 μm (eg, from about 170 μm to less than about 240 μm, from about 180 μm to about 230 μm, or from about 190 μm to about 220 μm). For example, the sheet can have a gauge of about 170 μm, 175 μm, 180 μm, 185 μm, 190 μm, 195 μm, 200 μm, 205 μm, 210 μm, 215 μm, 220 μm, 225 μm, 230 μm, 235 μm, or 240 μm. The products described herein can have a thickness of less than 170 μm. In some embodiments, the aluminum alloy capsule includes a thickness of about 30 μm to about 170 μm (eg, about 50 μm to less than about 150 μm, or about 75 μm to about 120 μm). For example, the aluminum alloy capsule is approximately 30 μm, 35 μm, 40 μm, 45 μm, 50 μm, 55 μm, 60 μm, 65 μm, 70 μm, 75 μm, 80 μm, 85 μm, 90 μm, 95 μm, 100 μm, 105 μm, 110 μm, 115 μm, 120 μm, 125 μm, 130 μm, It may have a thickness of 135 μm, 140 μm, 145 μm, 150 μm, 155 μm, 160 μm, 165 μm, or 170 μm. Optionally, the aluminum alloy capsule can include a thickness of about 70 μm to about 120 μm (eg, about 70 μm to less than about 110 μm, or about 80 μm to about 100 μm).

Turning to the figures, FIGS. 1A, 1B, 2A, and 2B depict perspective views of beverage capsules according to various examples described herein. Capsule 100 includes a dome-shaped body 101. As shown in the illustrated example, the height and curvature of the dome shape of body 101 may vary. Body 101 includes a lip 102 extending therefrom. As shown in FIG. 3, body 101 defines a cavity 104 that can contain a substance 105. A cover 103 can be secured with a lip 102 over the opening of the cavity 104 to seal the substance 105 within the cavity 104 of the capsule 100 until the capsule 100 is ready for use.

Properties of Aluminum Alloy Products The resulting metal products as described herein have a desirable combination of properties, including high strength and high formability under O temper conditions. Under this tempered condition, the aluminum alloy product has an ultimate tensile strength of from about 110 MPa to about 195 MPa (e.g., from about 170 MPa to less than about 185 MPa, from about 120 MPa to about 195 MPa, from about 125 MPa to about 145 MPa, or from about 165 MPa to about 195 MPa). It can show strength. For example, the ultimate tensile strength is approximately 110 MPa, 115 MPa, 120 MPa, 125 MPa, 130 MPa, 135 MPa, 140 MPa, 145 MPa, 150 MPa, 155 MPa, 160 MPa, 165 MPa, 170 MPa, 175 MPa, 180 MPa, 185 MPa, 19 It may be 0 MPa or 195 MPa. In some examples, the aluminum alloy article is about 45 MPa to about 85 MPa at 0.2% strain (e.g., about 75 MPa to less than about 85 MPa, about 65 MPa to about 80 MPa, about 45 MPa to about 75 MPa, or about 55 MPa to about 85 MPa) ) has a yield strength of For example, the yield strength may be about 45 MPa, 50 MPa, 55 MPa, 60 MPa, 65 MPa, 70 MPa, 75 MPa, 80 MPa, or 85 MPa. The aluminum alloy article can exhibit a total elongation of at least about 10% (eg, at least about 13%, at least about 15%, at least about 17%, or at least about 18%) using the A100 test shape. For example, total elongation is approximately 10%, 11%, 12%, 13%, 14%, 15%, 16%, 17%, 18%, 19%, 20%, 21% using the A100 test geometry. , or 22%.

The aluminum alloys described herein exhibit good earing properties, which are a complex function of microstructure and process interactions, as well as good mechanical properties, even when down-gauged (e.g., thinner). obtain. For example, aluminum alloy products may exhibit less than 2.0% selvage with O temper. In a particular example, the aluminum alloy product exhibits less than 1.5% selvage in the O temper. For example, aluminum alloy products are less than 2.0%, less than 1.9%, less than 1.8%, less than 1.7%, less than 1.6%, less than 1.5%, less than 1.4%, Less than 1.3%, less than 1.2%, less than 1.1%, less than 1.0%, less than 0.9%, less than 0.8%, less than 0.7%, less than 0.6%, 0. It may exhibit less than 5% otic development, less than 0.4% otic development, less than 0.3% otic development, less than 0.2% otic development, or less than 0.1% otic development.

Table 1 shows the properties of aluminum alloy products according to examples described herein as compared to conventional AA8011A products. For most aluminum alloys, the higher the strength, the lower the resistance to fracture during deformation. The processability of these high strength materials in beverage capsule manufacturing processes is unexpected.

縮小されたゲージでの高い引張強度は、従来の８ｘｘｘ系アルミニウム合金製品と比較して、原料の使用量と運用コストを削減することができる。 The tensile strength and yield strength improvements listed in Table 1 can be retained during downgauging. The increased strength compared to traditional products can reduce damage to aluminum alloy products during transportation and handling. In some instances, improved tensile and yield strengths can enable the use of expanded processing conditions, such as increased pressure in beverage machines, compared to conventional products. Table 2 shows the product ultimate tensile strength at various gauges of an aluminum alloy product according to an example described herein compared to a conventional product (test width 15 mm).

High tensile strength at reduced gauge can reduce raw material usage and operating costs compared to traditional 8xxx series aluminum alloy products.

AA3104 aluminum alloy rolled to a particular gauge and heat treated to O temper can have different combinations of properties, as shown in Table 3. Table 3 shows the standard can body stock sheet AA3104 aluminum alloy processed by hot and cold rolling to a final gauge of 90 μm and annealed to O temper (Variation A), by cold rolling. A similar alloy processed by a similar route with reduced thickness gauge reduction (variation B), and finally a reduced thickness gauge reduction due to cold rolling and between 30% and 90% cold rolling. Figure 3 shows modification C in which the intermediate heat treatment was carried out at a temperature of 150°C to 400°C for 10 minutes or more.

Ears occur because the height profile of the cup top is not trimmed or cut (as is the case with beverage cans), which can affect its ability to form a lip and the subsequent process of attaching the lid. is an important property for the production of beverage capsules. Each variant in Table 3 achieved similar tensile properties, but due to specific changes in microstructure, only variant C achieved the desired ear development properties. The general beverage capsule otic requirement is that the maximum value does not exceed 2%. Only variant C achieved less than 2% ear development.

The value of otic development is related to the crystallographic distribution of grain orientation of the material, also called crystallographic texture. The lower earing values of aluminum alloys are due to the crystallographic orientation obtained during cold rolling, the so-called Miller indices {011}<211> of Brass, S{123}<634>, and Cu{112}<111 > and Cube{001}<100> or Goss{011}<100>, the volume fraction of which increases during recrystallization, for example by annealing at temperatures above 300 °C. good. The texture of typical can body stock 3104-H19 is significantly different from that of the aluminum alloys described herein. Table 4 shows texture values for several variants of 3104-H19 and 3104-O. Microstructural thresholds in terms of the ratio of (Cube+Goss)/(Brass+S+Cu) can be targeted to achieve specific otogenetic characteristics.

Method of Fabrication The aluminum alloys described above may be cast into cast products. Prior to casting, recycled scrap may be melted into liquid metal. Optionally, the liquid metal can be degassed to reduce the amount of hydrogen dissolved in the liquid metal. Any suitable degassing technique may be used. Optionally, alloying elements may be added to the liquid metal to form a modified liquid metal. In some examples, the alloying elements include manganese and/or magnesium. Optionally, the alloying element may include silicon.

The alloy can be cast using any casting process performed according to standards commonly used in the aluminum industry, as known to those skilled in the art. For example, the alloy may be cast using a continuous casting (CC) process, which may include, but is not limited to, the use of a twin belt caster, twin roll caster, or block caster. In some examples, the casting process is performed by a CC process to form a cast product such as a billet, slab, shate, strip, etc. In some examples, the casting process is performed by a direct chill (DC) casting process to form a cast product such as an ingot. In some examples, the casting process is performed by strip casting. The cast product can then be subjected to further processing steps. Such processing steps include, but are not limited to, heating steps, hot rolling steps, cold rolling steps, and/or annealing steps. Optionally, the heating step may include homogenizing the cast aluminum alloy.

Heating The heating step involves heating a cast aluminum alloy product, such as an ingot prepared from an aluminum alloy composition, to a temperature of about 450°C, or at least about 450°C (e.g., at least about 460°C, at least about 470°C, at least about 480°C, at least about 490°C, at least about 500°C, at least about 510°C, at least about 520°C, at least about 530°C, at least about 540°C, at least about 550°C, at least about 560°C, at least about 570°C, at least about 580°C, at least about heating to a peak metal temperature (PMT) of 590°C, at least about 600°C, at least about 610°C). For example, a cast aluminum alloy product may be manufactured at a temperature of about 450°C to about 610°C, about 460°C to about 590°C, about 470°C to about 580°C, about 480°C to about 565°C, about 490°C to about 555°C, or about It can be heated to a temperature of 500°C to about 550°C. In some cases, the heating rate to PMT is about 100°C/hour or less, 75°C/hour or less, 50°C/hour or less, 40°C/hour or less, 30°C/hour or less, 25°C/hour or less, 20°C /hour or less, or 15°C/hour or less. In other cases, the heating rate to PMT is from about 10°C/min to about 100°C/min (e.g., from about 10°C/min to about 90°C/min, from about 10°C/min to about 70°C/min). , about 10°C/min to about 60°C/min, about 20°C/min to about 90°C/min, about 30°C/min to about 80°C/min, about 40°C/min to about 70°C/min, or (about 50° C./min to about 60° C./min).

In some cases, the heating step includes homogenizing the cast aluminum alloy, where the cast aluminum alloy product may be soaked (i.e., held at a prescribed temperature) for a predetermined period of time. In some cases, cast aluminum alloy products may be soaked for at least 30 minutes at peak metal temperatures as described above. According to one non-limiting example, a cast aluminum alloy product may be soaked for up to about 36 hours (eg, from about 30 minutes to about 36 hours, including 30 minutes and 36 hours). For example, aluminum alloy products can be used for 30 minutes, 1 hour, 2 hours, 3 hours, 4 hours, 5 hours, 6 hours, 7 hours, 8 hours, 9 hours, 10 hours, 11 hours, 12 hours at peak metal temperature. , 13 hours, 14 hours, 15 hours, 16 hours, 17 hours, 18 hours, 19 hours, 20 hours, 21 hours, 22 hours, 23 hours, 24 hours, 25 hours, 26 hours, 27 hours, 28 hours, 29 It can be soaked for 30 hours, 31 hours, 32 hours, 33 hours, 34 hours, 35 hours, 36 hours, or any time in between.

Hot Rolling and Cold Rolling Following the homogenization step, a hot rolling step can be performed. The hot rolling process may include hot reverse mill operations and/or hot tandem mill operations. The hot rolling step may be performed at a temperature in the range of about 250°C to about 600°C (e.g., about 300°C to about 550°C, or about 350°C to about 450°C), or any other suitable temperature. I can do it. In some examples, the hot band gauge can be about 1.5 mm to about 10 mm (eg, about 2 mm to about 8 mm or about 4 mm to about 6 mm). For example, hot band gauges are approximately 1.5 mm, approximately 2 mm, approximately 2.5 mm, approximately 3 mm, approximately 3.5 mm, approximately 4 mm, approximately 4.5 mm, approximately 5 mm, approximately 5.5 mm, approximately 6 mm, approximately 6 mm. It may be 5 mm, about 7 mm, about 7.5 mm, about 8 mm, about 8.5 mm, about 9 mm, about 9.5 mm, or about 10 mm.

After hot rolling, a cold rolling step can optionally be applied to form the aluminum alloy product. For example, cast aluminum alloy products can be cold rolled to a thickness of less than about 4 mm. In some examples, the sheet is less than 4 mm, less than 3 mm, less than 2 mm, less than 1 mm, less than 0.9 mm, less than 0.8 mm, less than 0.7 mm, less than 0.6 mm, less than 0.5 mm, less than 0.4 mm. , less than 0.3 mm, less than 0.2 mm, or less than 0.1 mm. Optionally, the sheet gauge is less than about 240 μm (eg, from about 170 μm to less than about 240 μm, from about 180 μm to about 230 μm, or from about 190 μm to about 220 μm). For example, the sheet can have a gauge of about 170 μm, 175 μm, 180 μm, 185 μm, 190 μm, 195 μm, 200 μm, 205 μm, 210 μm, 215 μm, 220 μm, 225 μm, 230 μm, 235 μm, or 240 μm. Optionally, the sheet gauge is less than about 170 μm (eg, from about 30 μm to less than about 170 μm, from about 180 μm to about 230 μm, or from about 190 μm to about 220 μm). For example, a sheet is about 30 μm, 35 μm, 40, 40, 45 μm, 50 μm, 50 μm, 60 μm, 60 μm, 70 μm, 70 μm, 70 μm, 85 μm, 95 μm, 95 μm, 105 μm, 115 μm, 115 μm, 125 μm, 115 μm, 115 μm, 115 μm, 115 μm, 115 μm, 115 μm, 115 μm, 115 μm. M, 130 μm, 135 μm, It may have a gauge of 140 μm, 145 μm, 150 μm, 155 μm, 160 μm, 165 μm, or 170 μm.

In some examples, the cold rolling process can be applied using multiple passes with steps of interannealing (or intermediate annealing) the aluminum alloy product between multiple passes. In a particular example, the aluminum alloy product may be processed to a H18 or H19 temper prior to the annealing process to temper the aluminum alloy product.

Thermal Refining The process of manufacturing an aluminum alloy product as disclosed herein can result in an aluminum product that has been recrystallized (e.g., O-refined) and can be described as a "soft" material. In some examples, the process may include a heat treatment that includes a complete soft annealing as an intermediate step and a final step that results in an O temper. Variant C differs from variants A and B in that it includes both an intermediate annealing and a final annealing, whereas variants A and B perform only a final annealing process.

Degreasing The processes described herein may optionally include at least one degreasing step applied to the aluminum alloy product. The term "degreasing" as used herein includes treating aluminum alloy products to remove residual oils that have accumulated on the surface during hot and cold rolling processes. The degreasing step can also remove residual surface debris, rolling oil, and aluminum fines from the rolling process. The degreasing agent used in the degreasing process may contain water and/or a solvent. In some cases, the degreaser may include acidic or alkaline agents. In some examples, the degreaser may be a mixture of phosphoric or sulfuric acid with a fluoride compound. The pH of the acidic mixture may range from about 0 to about 5. In some examples, the degreaser can be a mixture of sodium hydroxide, sodium carbonate, potassium hydroxide, or potassium carbonate. The pH of the basic mixture may range from about 8 to about 14. In certain examples, the degreaser can be a slightly acidic or slightly basic solution with a pH that can range from about 5.5 to about 7.5.

Methods of Use and Downstream Processing The aluminum alloy products and methods described herein can be used to make packaging or for any other desired application. In some examples, aluminum alloy products can be used to make beverage capsules. In some examples, the aluminum alloy products and methods can be used in food packaging or other product packaging products.

Exemplary Embodiments of Suitable Alloys, Products, and Methods As used below, any reference to a series of exemplary alloys, products, or methods refers to each of those respective alloys, products, or methods. to be understood as referring disjunctively (eg, "exemplary embodiments 1-4" should be understood as "exemplary embodiments 1, 2, 3, or 4").

Exemplary embodiment 1 is an aluminum alloy capsule including a dome-shaped body including a lip extending outwardly from the body and a cover secured by the lip, the body comprising: defining a cavity configured to contain a substance for the preparation of a beverage, the cover being arranged around the lip of the body to seal the substance within the body until the capsule is ready for use; The aluminum alloy capsule forms a seal, and at least one of the main body and the cover includes a 3xxx series aluminum alloy.

Exemplary Embodiment 2 is the aluminum alloy capsule of any preceding or subsequent embodiment, wherein the 3xxx series aluminum alloy comprises AA3104.

Exemplary Embodiment 3 is the aluminum alloy capsule of any preceding or subsequent embodiment, wherein the 3xxx series aluminum alloy comprises AA3105.

Exemplary Embodiment 4 is the aluminum alloy capsule of any preceding or subsequent embodiment, wherein the 3xxx series aluminum alloy comprises at least 50 weight percent recycled aluminum.

Exemplary embodiment 5 is the aluminum alloy capsule of any preceding or subsequent embodiment, wherein the 3xxx series aluminum alloy comprises at least 80 weight percent recycled aluminum.

Exemplary embodiment 6 is the aluminum alloy capsule of any preceding or subsequent embodiment, wherein the recycled aluminum comprises at least one of manufacturing process scrap, post-manufacturing scrap, or post-consumer scrap aluminum.

Exemplary embodiment 7 is the aluminum alloy capsule of any preceding or subsequent embodiment, wherein the 3xxx-based aluminum alloy includes at least one of manganese or magnesium.

Exemplary embodiment 8 is the aluminum alloy capsule of any preceding or subsequent embodiment in which the 3xxx series aluminum alloy is processed to produce an O-tempered alloy.

Exemplary embodiment 9 is the aluminum alloy capsule of any preceding or subsequent embodiment, wherein the 3xxx series aluminum alloy exhibits less than 2.0 percent selvage upon O temper.

Exemplary embodiment 10 provides the aluminum alloy capsule of any preceding or subsequent embodiment, wherein the 3xxx series aluminum alloy exhibits a texture component (Cube+Goss)/(Brass+S+Cu) ratio between 0.5 and 1.5. It is.

Exemplary embodiment 11 is the aluminum alloy capsule of any preceding or subsequent embodiment, wherein the 3xxx series aluminum alloy exhibits less than 1.5 percent selvage upon O temper.

Exemplary embodiment 12 provides the aluminum alloy capsule of any preceding or subsequent embodiment, wherein the 3xxx series aluminum alloy exhibits a texture component (Cube+Goss)/(Brass+S+Cu) ratio between 0.8 and 1.2. It is.

Exemplary embodiment 13 is the aluminum alloy capsule of any preceding or subsequent embodiment, wherein the aluminum alloy capsule includes a thickness of 30 μm to 170 μm.

Exemplary embodiment 14 is the aluminum alloy capsule of any preceding or subsequent embodiment, wherein the aluminum alloy capsule includes a thickness of 70 μm to 120 μm.

Exemplary embodiment 15 is the aluminum alloy capsule of any preceding or subsequent embodiment, wherein when the aluminum alloy is in the O temper, the aluminum alloy has an ultimate tensile strength of 110 MPa to 195 MPa.

Exemplary embodiment 16 provides the aluminum alloy of any preceding or subsequent embodiment, wherein when the aluminum alloy is in O-temperature, the aluminum alloy has a yield strength of 45 MPa to 85 MPa at 0.2 percent strain. It's a capsule.

Exemplary embodiment 17 is the aluminum alloy capsule of any preceding embodiment, wherein when the aluminum alloy is in the O temper, the aluminum alloy has a total elongation of at least 10 percent.

Exemplary embodiment 18 is a method of manufacturing an aluminum alloy product comprising: melting recycled aluminum into a liquid metal; and adding alloying elements to the liquid metal to form a modified liquid metal. forming the modified liquid metal, wherein the alloying element includes at least one of manganese or magnesium; and casting the modified liquid metal to form a cast aluminum alloy. forming the cast aluminum alloy, wherein the liquid metal includes at least 50 weight percent recycled aluminum; heating the cast aluminum alloy; and hot rolling the cast aluminum alloy to a thickness of 1.5 mm to 1.5 mm. producing a rolled product with a thickness of 10 mm; cold rolling the rolled product to produce an aluminum alloy product with a thickness of 30 μm to 170 μm; and annealing the aluminum alloy product to produce an O-tempered product. The method includes:

Exemplary embodiment 19 is the method of any preceding or subsequent embodiment, wherein heating the cast aluminum alloy includes homogenizing the cast aluminum alloy.

Exemplary embodiment 20 includes performing multiple passes during the cold rolling process and inter-annealing the aluminum alloy product between the multiple passes of the cold rolling process. The method of any preceding or subsequent embodiment, further comprising:

Exemplary embodiment 21 is the method of any preceding or subsequent embodiment, wherein, prior to the annealing step, the product is processed to an H18 or H19 temper.

Exemplary embodiment 22 is the method of any preceding or subsequent embodiment further comprising cleaning the aluminum alloy product with a mildly alkaline or acidic agent after cold rolling the rolled product.

Exemplary embodiment 23 is the method of any preceding or subsequent embodiment, wherein the modified liquid metal comprises at least 80 weight percent recycled aluminum.

Exemplary embodiment 24 is the method of any preceding embodiment, wherein the recycled aluminum comprises at least one of manufacturing process scrap, post-manufacturing scrap, or post-consumer scrap aluminum.

Exemplary embodiment 25 is an aluminum alloy product prepared according to the method of any preceding embodiment.

Exemplary embodiment 26 is the aluminum alloy product of any preceding or subsequent embodiment, wherein the aluminum alloy product comprises a 3xxx series aluminum alloy.

Exemplary embodiment 27 is the aluminum alloy product of any preceding or subsequent embodiment, wherein when the aluminum alloy product is in the O temper, the aluminum alloy product exhibits an ear development of less than 2.0 percent. .

Exemplary embodiment 28 is the aluminum alloy product of any preceding or subsequent embodiment, wherein the aluminum alloy product exhibits less than 1.5 percent selvage when the aluminum alloy product is in the O temper.

Exemplary embodiment 29 is the aluminum alloy product of any preceding or subsequent embodiment, wherein when the aluminum alloy product is in the O temper, the aluminum alloy product exhibits less than 1.0 percent selvage. .

Exemplary embodiment 30 is the aluminum alloy product of any preceding or subsequent embodiment, wherein the aluminum alloy product includes a thickness of 70 μm to 120 μm.

Exemplary embodiment 31 is the aluminum alloy product of any preceding or subsequent embodiment, wherein when the aluminum alloy product is in the O temper, the aluminum alloy product has an ultimate tensile strength of 110 MPa to 195 MPa.

Exemplary embodiment 32 provides that the aluminum alloy of any preceding or subsequent embodiment has a yield strength of 45 MPa to 85 MPa at 0.2 percent strain when the aluminum alloy is in O-temperature. It is a product.

Exemplary embodiment 33 is the aluminum alloy product of any preceding or subsequent embodiment, wherein when the aluminum alloy product is in the O temper, the aluminum alloy product has a total elongation of at least 10%.

Exemplary embodiment 34 is the aluminum alloy product of any preceding or subsequent embodiment where said aluminum alloy product is used for packaging.

Exemplary embodiment 35 is the aluminum alloy product of any preceding or subsequent embodiment, wherein said aluminum alloy product is used for packaging for the preparation of a beverage.

Exemplary embodiment 36 is the aluminum alloy product of any preceding embodiment, wherein the aluminum alloy product is a beverage capsule.

All patents, publications, and abstracts cited above are incorporated herein by reference in their entirety. Various embodiments of the invention have been described in accomplishing various objectives of the invention. It should be recognized that these embodiments are merely illustrative of the principles of the invention. Numerous modifications and adaptations thereof will be readily apparent to those skilled in the art without departing from the spirit and scope of the invention as defined by the following claims.

All patents, publications, and abstracts cited above are incorporated herein by reference in their entirety. Various embodiments of the invention have been described in accomplishing various objectives of the invention. It should be recognized that these embodiments are merely illustrative of the principles of the invention. Numerous modifications and adaptations thereof will be readily apparent to those skilled in the art without departing from the spirit and scope of the invention as defined by the following claims.
The disclosure herein may include the following aspects.
(Aspect 1)
a dome-shaped body including a lip extending outwardly from the body;
a cover fixed by the lip;
An aluminum alloy capsule comprising:
The body defines a cavity configured to contain a substance for preparing a beverage, and the cover seals the substance within the body until the capsule is ready for use. forming a seal around the lip of the
At least one of the main body and the cover includes a 3xxx aluminum alloy.
The aluminum alloy capsule.
(Aspect 2)
The aluminum alloy capsule according to aspect 1, wherein the 3xxx series aluminum alloy comprises AA3104.
(Aspect 3)
The aluminum alloy capsule according to aspect 1, wherein the 3xxx series aluminum alloy comprises AA3105.
(Aspect 4)
The aluminum alloy capsule according to any one of aspects 1 to 3, wherein the 3xxx series aluminum alloy comprises at least 50 weight percent recycled aluminum.
(Aspect 5)
Aluminum alloy capsule according to any one of aspects 1 to 4, wherein the 3xxx series aluminum alloy comprises at least 80 weight percent recycled aluminum.
(Aspect 6)
6. The aluminum alloy capsule according to aspect 4 or 5, wherein the recycled aluminum comprises at least one of manufacturing process scrap, post-manufacturing scrap, or post-consumer scrap aluminum.
(Aspect 7)
The aluminum alloy capsule according to any one of aspects 1 to 6, wherein the 3xxx series aluminum alloy contains at least one of manganese and magnesium.
(Aspect 8)
The aluminum alloy capsule according to any one of aspects 1 to 7, wherein the 3xxx series aluminum alloy is processed to produce an O-tempered alloy.
(Aspect 9)
9. The aluminum alloy capsule according to aspect 8, wherein the 3xxx series aluminum alloy exhibits less than 2.0 percent selvage in O temper.
(Aspect 10)
10. Aluminum alloy capsule according to embodiment 9, wherein the 3xxx series aluminum alloy exhibits a ratio of texture components (Cube+Goss)/(Brass+S+Cu) between 0.5 and 1.5.
(Aspect 11)
9. The aluminum alloy capsule of aspect 8, wherein the 3xxx series aluminum alloy exhibits less than 1.5 percent selvage upon O tempering.
(Aspect 12)
12. Aluminum alloy capsule according to aspect 11, wherein the 3xxx series aluminum alloy exhibits a ratio of texture components (Cube+Goss)/(Brass+S+Cu) between 0.8 and 1.2.
(Aspect 13)
Aluminum alloy capsule according to any one of aspects 1 to 12, wherein the aluminum alloy capsule comprises a thickness of 30 μm to 170 μm.
(Aspect 14)
Aluminum alloy capsule according to any one of aspects 1 to 13, wherein the aluminum alloy capsule comprises a thickness of 70 μm to 120 μm.
(Aspect 15)
The aluminum alloy capsule according to any one of aspects 1 to 14, wherein the aluminum alloy has an ultimate tensile strength of 110 MPa to 195 MPa when the aluminum alloy is O-tempered.
(Aspect 16)
The aluminum alloy capsule according to any one of aspects 1 to 15, wherein the aluminum alloy has a yield strength of 45 MPa to 85 MPa at 0.2% strain when the aluminum alloy is in O-temperature.
(Aspect 17)
17. An aluminum alloy capsule according to any one of aspects 1 to 16, wherein when the aluminum alloy is in the O temper, the aluminum alloy has a total elongation of at least 13 percent.
(Aspect 18)
A method of manufacturing an aluminum alloy product, the method comprising:
melting recycled aluminum into liquid metal;
forming a modified liquid metal by adding an alloying element to the liquid metal, the alloying element containing at least one of manganese or magnesium;
casting the modified liquid metal to form a cast aluminum alloy, the modified liquid metal comprising at least 50 weight percent recycled aluminum;
heating the cast aluminum alloy;
hot rolling the cast aluminum alloy to produce a rolled product having a thickness of 1.5 mm to 10 mm;
cold rolling the rolled product to produce an aluminum alloy product having a thickness of 30 μm to 170 μm;
annealing the aluminum alloy product to produce an O-tempered product;
The method comprising:
(Aspect 19)
19. The method of aspect 18, wherein heating the cast aluminum alloy includes homogenizing the cast aluminum alloy.
(Aspect 20)
performing multiple passes during the cold rolling process;
interannealing the aluminum alloy product between the plurality of passes of the cold rolling process;
20. The method according to aspect 18 or 19, further comprising:
(Aspect 21)
21. A method according to aspect 20, wherein, before the annealing step, the product is processed to an H18 or H19 temper.
(Aspect 22)
22. The method according to any one of aspects 18 to 21, further comprising washing the aluminum alloy product with a weakly alkaline or acidic agent after cold rolling the rolled product.
(Aspect 23)
23. The method of any one of aspects 18-22, wherein the modified liquid metal comprises at least 80 weight percent recycled aluminum.
(Aspect 24)
24. The method of any one of aspects 18-23, wherein the recycled aluminum comprises at least one of manufacturing process scrap, post-manufacturing scrap, or post-consumer scrap aluminum.
(Aspect 25)
An aluminum alloy product prepared according to the method according to any one of aspects 18-24.
(Aspect 26)
The aluminum alloy product according to aspect 25, wherein the aluminum alloy product includes a 3xxx series aluminum alloy.
(Aspect 27)
27. The aluminum alloy product of aspect 25 or 26, wherein the aluminum alloy product exhibits less than 3.0 percent selvage when the aluminum alloy product is in the O temper.
(Aspect 28)
28. The aluminum alloy product of any one of aspects 25-27, wherein when the aluminum alloy product is in the O temper, the aluminum alloy product exhibits less than 1.0 percent selvage.
(Aspect 29)
29. An aluminum alloy product according to any one of aspects 25 to 28, wherein the aluminum alloy product comprises a thickness of 70 μm to 120 μm.
(Aspect 30)
30. The aluminum alloy product according to any one of aspects 25 to 29, wherein when the aluminum alloy product is in O-temperature, the aluminum alloy product has an ultimate tensile strength of 110 MPa to 195 MPa.
(Aspect 31)
31. The aluminum alloy product according to any one of aspects 25 to 30, wherein the aluminum alloy product has a yield strength of 45 MPa to 85 MPa at 0.2% strain when the aluminum alloy product is in O-temperature.
(Aspect 32)
32. An aluminum alloy product according to any one of aspects 25 to 31, wherein when the aluminum alloy product is in the O temper, the aluminum alloy product has a total elongation of at least 13 percent.
(Aspect 33)
33. An aluminum alloy product according to any one of aspects 25 to 32, wherein the aluminum alloy product is used for packaging.
(Aspect 34)
An aluminum alloy product according to any one of aspects 25 to 33, wherein the aluminum alloy product is a packaging for preparing a beverage.
(Aspect 35)
35. The aluminum alloy product according to any one of aspects 25 to 34, wherein the aluminum alloy product is a beverage capsule.

Claims (35)

a dome-shaped body including a lip extending outwardly from the body;
a cover fixed by the lip;
An aluminum alloy capsule comprising:
The body defines a cavity configured to contain a substance for preparing a beverage, and the cover seals the substance within the body until the capsule is ready for use. forming a seal around the lip of the
At least one of the main body and the cover includes a 3xxx aluminum alloy.
The aluminum alloy capsule. The aluminum alloy capsule according to claim 1, wherein the 3xxx series aluminum alloy comprises AA3104. The aluminum alloy capsule according to claim 1, wherein the 3xxx series aluminum alloy comprises AA3105. Aluminum alloy capsule according to any one of claims 1 to 3, wherein the 3xxx series aluminum alloy comprises at least 50 weight percent recycled aluminum. Aluminum alloy capsule according to any one of claims 1 to 4, wherein the 3xxx series aluminum alloy comprises at least 80 weight percent recycled aluminum. 6. The aluminum alloy capsule of claim 4 or 5, wherein the recycled aluminum comprises at least one of manufacturing process scrap, post-manufacturing scrap, or post-consumer scrap aluminum. The aluminum alloy capsule according to any one of claims 1 to 6, wherein the 3xxx series aluminum alloy contains at least one of manganese and magnesium. Aluminum alloy capsule according to any one of claims 1 to 7, wherein the 3xxx series aluminum alloy is processed to produce an O-tempered alloy. 9. The aluminum alloy capsule of claim 8, wherein the 3xxx series aluminum alloy exhibits less than 2.0 percent earing in O temper. Aluminum alloy capsule according to claim 9, wherein the 3xxx series aluminum alloy exhibits a ratio of texture components (Cube+Goss)/(Brass+S+Cu) between 0.5 and 1.5. 9. The aluminum alloy capsule of claim 8, wherein the 3xxx series aluminum alloy exhibits less than 1.5 percent earing in O temper. Aluminum alloy capsule according to claim 11, wherein the 3xxx series aluminum alloy exhibits a ratio of texture components (Cube+Goss)/(Brass+S+Cu) between 0.8 and 1.2. Aluminum alloy capsule according to any one of claims 1 to 12, wherein the aluminum alloy capsule comprises a thickness of 30 μm to 170 μm. Aluminum alloy capsule according to any one of claims 1 to 13, wherein the aluminum alloy capsule comprises a thickness of 70 μm to 120 μm. Aluminum alloy capsule according to any one of claims 1 to 14, wherein when the aluminum alloy is in O-temperature, the aluminum alloy has an ultimate tensile strength of 110 MPa to 195 MPa. Aluminum alloy capsule according to any one of the preceding claims, wherein when the aluminum alloy is in O temper, the aluminum alloy has a yield strength of 45 MPa to 85 MPa at 0.2% strain. Aluminum alloy capsule according to any one of the preceding claims, wherein the aluminum alloy has a total elongation of at least 13 percent when the aluminum alloy is in O-temperature. A method of manufacturing an aluminum alloy product, the method comprising:
melting recycled aluminum into liquid metal;
forming a modified liquid metal by adding an alloying element to the liquid metal, the alloying element containing at least one of manganese or magnesium;
casting the modified liquid metal to form a cast aluminum alloy, the modified liquid metal comprising at least 50 weight percent recycled aluminum;
heating the cast aluminum alloy;
hot rolling the cast aluminum alloy to produce a rolled product having a thickness of 1.5 mm to 10 mm;
cold rolling the rolled product to produce an aluminum alloy product having a thickness of 30 μm to 170 μm;
annealing the aluminum alloy product to produce an O-tempered product;
The method comprising: 19. The method of claim 18, wherein heating the cast aluminum alloy includes homogenizing the cast aluminum alloy. performing multiple passes during the cold rolling process;
interannealing the aluminum alloy product between the plurality of passes of the cold rolling process;
20. The method of claim 18 or 19, further comprising: 21. The method of claim 20, wherein before the annealing step, the product is processed to an H18 or H19 temper. The method according to any one of claims 18 to 21, further comprising washing the aluminum alloy product with a weak alkaline or acidic agent after cold rolling the rolled product. A method according to any one of claims 18 to 22, wherein the modified liquid metal comprises at least 80 weight percent recycled aluminum. 24. A method according to any one of claims 18 to 23, wherein the recycled aluminum comprises at least one of manufacturing process scrap, post-manufacturing scrap, or post-consumer scrap aluminum. An aluminum alloy product prepared according to the method according to any one of claims 18 to 24. 26. The aluminum alloy product of claim 25, wherein the aluminum alloy product comprises a 3xxx series aluminum alloy. 27. The aluminum alloy product of claim 25 or 26, wherein the aluminum alloy product exhibits less than 3.0 percent selvage when the aluminum alloy product is in the O temper. 28. An aluminum alloy product according to any one of claims 25 to 27, wherein the aluminum alloy product exhibits less than 1.0 percent selvage when the aluminum alloy product is in the O temper. An aluminum alloy product according to any one of claims 25 to 28, wherein the aluminum alloy product comprises a thickness of 70 μm to 120 μm. The aluminum alloy product according to any one of claims 25 to 29, wherein when the aluminum alloy product is in O-temperature, the aluminum alloy product has an ultimate tensile strength of 110 MPa to 195 MPa. The aluminum alloy product according to any one of claims 25 to 30, wherein the aluminum alloy product has a yield strength of 45 MPa to 85 MPa at 0.2% strain when the aluminum alloy product is in O-temperature. 32. An aluminum alloy product according to any one of claims 25 to 31, wherein the aluminum alloy product has a total elongation of at least 13 percent when the aluminum alloy product is in the O temper. Aluminum alloy product according to any one of claims 25 to 32, wherein the aluminum alloy product is used for packaging. Aluminum alloy product according to any one of claims 25 to 33, wherein the aluminum alloy product is a packaging for preparing a beverage. An aluminum alloy product according to any one of claims 25 to 34, wherein the aluminum alloy product is a beverage capsule.

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