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Drink can

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"Beer can" redirects here. For other uses, see Beercan (disambiguation).
"Pop cap" and "Pop top" redirect here. For the software companies, see PopCap Games and PopTop Software.
"Pop can" redirects here. For the Jamaican singer, see Popcaan.
Beverage can
The stay-tab opening mechanism characteristic of most drinking cans since the mid-1980s. The 'wide-mouth' version, seen here, was introduced in the late 1990s.
Can of Belgian Pils represented on a mural of the railway station of Louvain-la-Neuve (Belgium).

A drink can (or beverage can) is a metal container with a polymer interior designed to hold a fixed portion of liquid such as carbonated soft drinks, alcoholic drinks, fruit juices, teas, herbal teas, energy drinks, etc. Drink cans exteriors are made of aluminum (75% of worldwide production)[1] or tin-plated steel (25% worldwide production) and the interiors coated with an epoxy resin or polymer. Worldwide production for all drink cans is approximately 370 billion cans per year.[1]

History

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See also: Tin can § History

The first commercial beer available in cans began in 1935 in Richmond, Virginia.[2] Not long after that, sodas, with their higher acidity and somewhat higher pressures, were available in cans. The key development for storing drinks in cans was the interior liner, typically plastic or sometimes a waxy substance, that helped to keep the product's flavor from being ruined by a chemical reaction with the metal. Another major factor for the timing was the repeal of Prohibition in the United States at the end of 1933.

In 1935,[3] the Felinfoel Brewery at Felinfoel in Wales was the first brewery outside the US to commercially can beer. Prior to this time, beer had been available only in barrels or in glass bottles. From this time, lightweight tin cans could be used. Felinfoel was a major supplier to British armed forces abroad in the Second World War. Cans saved a great deal of space and weight for wartime exports compared to glass bottles and did not have to be returned for refilling. These early cans did not have a pull tab, being equipped instead with a crown cork (beer bottle top). From the 18th century until the early 20th century Wales dominated world tinplate production, peaking in the early 1890s when 80% of the world's tinplate was produced in south Wales.[4]

Canned drinks were factory-sealed and required a special opener tool in order to consume the contents. Cans were typically formed as cylinders, having a flat top and bottom. They required a can piercer, colloquially known as a "church key", that latched onto the top rim for leverage; lifting the handle would force the sharp tip through the top of the can, cutting a triangular hole. A smaller second hole was usually punched at the opposite side of the top to admit air while pouring, allowing the liquid to flow freely.

A 1946, Neuweiler "crowntainer" beer can

In the mid-1930s, some cans were developed with caps so that they could be opened and poured more like a bottle. These were called "cone tops", as their tops had a conical taper up to the smaller diameter of the cap. Cone top cans were sealed by the same crimped caps that were put on bottles, and could be opened with the same bottle-opener tool. There were three types of conetops: high profile, low profile, and j-spout. The low profile and j-spout were the earliest, dating from about 1935. The "crowntainer" was a different type of can that was drawn steel with a bottom cap. These were developed by Crown Cork & Seal (now known as Crown Holdings, Inc.), a leading drink packaging and drink can producer. The popularity of canned drinks was slow to catch on, as the metallic taste was difficult to overcome with the interior liner not perfected, especially with more acidic sodas. Cans had two advantages over glass bottles. First for the distributors, flat-top cans were more compact for transportation and storage and weighed less than bottles. Second for consumers, they did not require the deposit typically paid for bottles, as they were discarded after use. Glass-bottle deposits were reimbursed when consumers took the empties back to the store.

A pop tab from the 1970s

In 1959, the recyclable aluminum can was introduced to the market in a 7 oz. size by the Adolph Coors Company.[5]

In 2008, an aluminum version of the crowntainer design was adopted for packaging Coca-Cola's Caribou Coffee drink.[6][7]

Standard sizes

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Comparison chart of various standards
ml imp fl oz US fl oz
1,000 35.2 33.8
568 20.0[nb 1] 19.2
500 17.6 16.9
473 16.6 16.0[nb 2]
440 15.49 14.88
375 13.2 12.7
355 12.5 12.0
350 12.3 11.8
341 12.0 11.5
330 11.6 11.2
320 11.3 10.8
250 8.8 8.5
237 8.3 8.0[nb 3]
222 7.8 7.5
200 7.0 6.8
150 5.3 5.1
  1. ^ one imperial pint
  2. ^ one US pint
  3. ^ half a US pint

The standard size of drink cans in each country significantly varies, and various standard capacities are used internationally.

Africa

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South Africa

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In South Africa, standard cans are 330 ml (reduced in the early 2000s from the up-until-then ubiquitous 340 ml) and the promotional size is 440 ml. There is also the 500 ml can. A smaller 200 ml can is used for "mixers" such as tonic or soda water. It has a smaller diameter than the other cans. In September 2018, a 300 ml can was introduced as an alternative to the 330 ml can in a continued effort to reduce the amount of sugar consumed in soft drinks.[8]

Asia

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China

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In China, the most common size is 330 ml.

Can dimensions may be cited in metric or imperial units; imperial dimensions for can making are written as inches+sixteenths of an inch (e.g. "202" = 2 inches + 2 sixteenths).[9]

Hong Kong

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In Hong Kong, most cans are 330 ml – in the past they were usually 355 or 350 ml.[10] 200 ml has also become available.[11] Some beers[12] and coffees[13] are, respectively, sold with 500 ml and 250 ml cans.

India

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In India, 250 ml, 300 ml, 330 ml, 350 ml and 500 ml cans are available.[citation needed]

Indonesia

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In Indonesia, 320 ml cans were introduced for domestically produced beer in 2018. Carbonated soft drink cans are typically 330 ml.[citation needed]

A small 135 ml beer can in Japan

Japan

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In Japan, the most common sizes are 350 ml and 500 ml, while larger and smaller cans are also sold.[citation needed]

Malaysia (and Singapore)

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In Malaysia, beer cans are 320 ml. For soft drinks in both Malaysia and Singapore, the most commonly found cans are 300 ml for non-carbonated drinks and 325 ml for carbonated drinks. Larger 330 ml/350 ml cans are limited to imported drinks which usually cost a lot more than local ones.[citation needed]

Pakistan

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In Pakistan, the most common sizes are 250 ml and 330 ml, and 200 ml cans are also sold.[citation needed]

South Korea

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In South Korea, 250 ml cans are the most common for soft drinks, but when accompanying take-out food (such as pizza or chicken), a short 245 ml can is standard. Recently, some 355 ml cans which are similar to North American cans are increasingly available, but are limited mostly to Coca-Cola and Dr Pepper, and beer cans are available in 500 ml.[citation needed]

Thailand

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In Thailand, Singha beer uses 320 ml cans for domestic sales and 330 ml cans for exports.[14]

West Asia

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In West Asia, standard cans are 330 ml.[citation needed]

Europe

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In Europe, the standard can is 330 ml, but since the 1990s 250 ml has slowly become common for energy drinks (e.g. redbull), along with 500 ml, often used for beers and sometimes for soft drinks too (particularly in wholesale supply).[citation needed]

United Kingdom

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In the United Kingdom, 440 ml is commonly used for lager and cider.[citation needed]

Ireland

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In Ireland, 330 ml and 440 ml fat cans are used for soft drinks.[citation needed]

Austria

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In Austria, energy drinks are usually sold in sizes of 200 to 330 ml.[citation needed]

North America

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In North America, the standard can size is 12 US fl oz or 355 ml. The US standard can is 4.83 in or 12.3 cm high, 2.13 in or 5.41 cm in diameter at the lid, and 2.6 in or 6.60 cm in diameter at the widest point of the body. Also available are 16 US fl oz or 473 ml cans (known as tallboys or, referring to the weight, "pounders"), and 18 US fl oz or 532 ml.[citation needed]

Canada

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In Canada, the standard size was previously 12 Imperial fluid ounces (341 ml), later redefined and labelled as 341 ml in 1980. This size was commonly used with steel drink cans in the 1970s and early 1980s. However, the US standard 355 ml can size was standardized in the 1980s and 1990s upon the conversion from steel to aluminum. Some drinks, such as Nestea, are sold in 341 ml cans.[citation needed]

Mexico

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In Mexico, the standard size is 355 ml, although smaller 235 ml cans have gained popularity in the late 2010s and early 2020s.[citation needed]

Quebec

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In Quebec, a new standard for carbonated drinks has been added, as some grocery stores now only sell cans of all major carbonated drinks in six-packs of 222 ml cans. Many convenience stores also began selling "slim cans" with a 310 ml capacity in 2015.[citation needed]

Oceania

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Australia

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In Australia, the standard can size for alcoholic and soft drinks is 375 ml. Energy drinks and some soft drinks are served in 250 ml and 500 ml sizes. Some beers are produced in 330 ml and 500 ml cans.[citation needed]

New Zealand

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In New Zealand, the standard can size is 355 ml, although Coca-Cola Amatil changed some of its canned drinks to 330 ml in 2017.[15]

South America

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Brazil

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In Brazil, the standard can size is 350 ml.[citation needed]

Composition

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Aluminum cans pressed into blocks for recycling

Most metal drink cans manufactured in the United States are made of aluminum,[16] whereas in some parts of Europe and Asia approximately 55 percent are made of steel and 45 percent are aluminum alloy. Steel cans often have a top made of aluminum. Beverage containers are made of two different aluminum alloys. The body is made of the 3004 alloy that can be drawn easily and the top is made of the harder 5182 alloy.[17]

In 2001, the Australian Aluminium Council reported that the average Australian-size can weighed approximately 14.9 grams (0.53 oz). Improved manufacturing techniques had allowed Australian manufacturers to reduce metal requirements from the 1992 average of 16.55 grams (0.584 oz).[18] In 2011, an empty U.S.-size can weighed approximately one-half ounce (14 g), with approximately 34 per pound or 70 per kilogram.[19]

In many parts of the world a deposit can be recovered by turning in empty plastic, glass, and aluminum containers. Scrap metal dealers often purchase aluminum cans in bulk, even when deposits are not offered. Aluminum is one of the most cost-effective materials to recycle. When recycled without other metals being mixed in, the can–lid combination is perfect for producing new stock for the main part of the can—the loss of magnesium during melting is made up for by the high magnesium content of the lid. Also, reducing ores such as bauxite into aluminum requires large amounts of electricity, making recycling cheaper than producing new metal.

Aluminum cans are coated internally to protect the aluminum from oxidizing. Despite this coating, trace amounts of aluminum can be degraded into the liquid, the amount depending on factors such as storage temperature and liquid composition.[20][21] Chemical compounds used in the internal coating of the can include types of epoxy resin.[22]

Fabrication process

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Video describing the design and manufacture of aluminum cans.

Modern cans are generally produced through a mechanical cold forming process that starts with punching a flat blank from very stiff cold-rolled sheet. This sheet is typically alloy 3104-H19 or 3004-H19, which is aluminum with about 1% manganese and 1% magnesium to give it strength and formability. The flat blank is first formed into a cup about three inches in diameter. This cup is then pushed through a different forming process called "ironing" which forms the can. The bottom of the can is also shaped at this time. The malleable metal deforms into the shape of an open-top can. With the sophisticated technology of the dies and the forming machines, the side of the can is thinner than either the top and bottom areas, where stiffness is required.

Plain lids (known as shells) are stamped from a coil of aluminum, typically alloy 5182-H48, and transferred to another press that converts them to easy-open ends. This press is known as a conversion press which forms an integral rivet button in the lid and scores the opening, while concurrently forming the tabs in another die from a separate strip of aluminum.

Filling cans

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Cans are filled before the top is crimped on by seamers. To speed up the production process filling and sealing operations need to be extremely precise. The filling head centers the can using gas pressure, purges the air, and lets the drink flow down the sides of the can. The lid is placed on the can, and then crimped in two operations. A seaming head engages the lid from above while a seaming roller to the side curls the edge of the lid around the edge of the can body. The head and roller spin the can in a complete circle to seal all the way around. Then a pressure roller with a different profile drives the two edges together under pressure to make a gas-tight seal. Filled cans usually have pressurized gas inside, which makes them stiff enough for easy handling. Without the riveted tab the scored section of the can's end would be impossible to lift from the can.

Can filling lines come in different line speeds from 15,000 cans per hour (cph) up to 120,000 cph or more, all with different levels of automation. For example, lid feeding alone starts with manual debagging onto a simple v-chute connected to the seamer up to fully automated processes with automatic debagging and lid feeding of lids combined with automatic roll depalletizers for filling debaggers by robots.

Opening mechanisms

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Old beer can showing punches from a churchkey
Beer can pop-top display at a Budweiser Brewery

Early metal drink cans had no tabs; they were opened by a can-piercer or churchkey, a device resembling a bottle opener with a sharp point. The can was opened by punching two triangular holes in the lid—a large one for drinking, and a second smaller one to admit air.

As early as 1922, inventors were applying for patents on cans with tab tops, but the technology of the time made these inventions impractical.[23] Later advancements saw the ends of the can made out of aluminum instead of steel.

In 1959, Ermal Fraze devised a can-opening method that would come to dominate the canned drink market. His invention was the "pull-tab". This eliminated the need for a separate opener tool by attaching an aluminum pull-ring lever with a rivet to a pre-scored wedge-shaped tab section of the can top. The ring was riveted to the center of the top, which created an elongated opening large enough that one hole simultaneously served to let the drink flow out while air flowed in. Previously, while on a family picnic, Mr. Fraze had forgotten to bring a can opener and was forced to use a car bumper to open a can of beer. Thinking there must be an easier way, he stayed up all night until he came up with the pull tab.[24] Pull-tab cans, or the discarded tabs from them, were colloquially called "pop-tops".[25]

Into the 1970s the pull-tab was widely popular, but its popularity came with the problem of people frequently simply discarding the pull-tabs on the ground, creating a potential injury risk especially to the feet or fingers. In the 1960s, at least one inventor attempted to solve the litter problem, by having the tab be retained by a stationary key that would wrap the tab around itself, which was unsuccessful commercially.[26]

The problem of the discarded tops was initially solved by the invention of the push-tab. Used primarily on Coors Beer cans in the mid-1970s, the push-tab was a raised circular scored area used in place of the pull-tab.[27] It needed no ring to pull up; instead, the raised aluminum blister was pushed down into the can using one finger. A small unscored section of the tab prevented it from detaching and falling into the can after being pushed in. Push-tabs never gained wide popularity because while they had solved the litter problem of the pull-tab, they created a safety hazard where the person's finger upon pushing the tab into the can was immediately exposed to the sharp edges of the opening. A feature of the push-tab Coors Beer cans was that they had a second, smaller, push-tab at the top as an airflow vent. "Push-tabs" were introduced into Australia from around 1977 and were locally known as "pop-tops", before being replaced later by the Stay-on-tab.[28] The safety and litter problems were eventually solved later in the 1970s with Daniel F. Cudzik's invention of the non-removing "Stay-Tab".

Cans are usually in sealed paperboard cartons, corrugated fiberboard boxes, or trays covered with plastic film. The entire distribution system and packaging need to be controlled to ensure freshness.[29]

Pop-tab

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Old style pull-tab in use on a can of Tsingtao beer in Beijing, China in 2009

Mikolaj Kondakow and James Wong of Port Arthur, Ontario, Canada invented the pull tab version for bottles in or before 1951 (Canadian patent 476789).[30] In 1962, Ermal Cleon Fraze of Dayton, Ohio, United States, invented the similar integral rivet and pull-tab version (also known as ring pull in British English), which had a ring attached at the rivet for pulling, and which would come off completely to be discarded. He received US Patent No. 3,349,949 for his pull-top can design in 1963 and licensed his invention to Alcoa and Pittsburgh Brewing Company, the latter of which first introduced the design on Iron City Beer cans. The first soft drinks to be sold in all-aluminum cans were R.C. Cola and Diet-Rite Cola, both made by the Royal Crown Cola company, in 1964.

The early pull-tabs detached easily. In 1976, the Journal of the American Medical Association noted cases of children ingesting pull-tabs that had broken off and dropped into the can.[31]

Full-top pull-tabs were also used in some oil cans and are currently used in some soup, pet food, tennis ball, nuts, and other cans.

Stay-on-tab

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Opening a drink can
Opening a stay-on-tab drink can
Problems playing this file? See media help.
A "standard" size can open, once common in American soft drinks.

In 1958, American inventor Anthony Bajada was awarded the patent for a "Lid closure for can containers".[32] Bajada's invention was the first design to keep the opening tab connected to the lid of the can, preventing it from falling into the contents of the can. His patent expired in 1975 and has been directly cited in the mechanisms used by companies such as Crown Cork & Seal Co.,[33] BHP,[34][35] and United States Steel Corporation.[36] Approximately one month after Bajada's patent expired, Daniel F. Cudzik, an engineer with Reynolds Metals, filed a design patent application for an "End closure for a container".[37] This later became known as a "Sta-Tab". When the Sta-Tab launched in 1975, on Falls City beer and, quickly, other drinks, there was an initial period of consumer testing and education. Cudzik later received patents for this "Easy Open Wall" (US 3967752, issued 1976-07-06  US 3967753, issued 1976-07-06 ). The validity of these patents was upheld in subsequent litigation.[38]

The similarly designed "Easy-open ecology end" was invented by Ermal Fraze and Omar Brown. Its patent application was also filed in 1975, less than two months after the expiration of Bajada's patent.[39] This design, like Cudzik's, uses a separate tab attached to the upper surface as a lever to depress a scored part of the lid, which folds underneath the top of the can and out of the way of the resulting opening, thus reducing injuries and roadside litter caused by removable tabs.[40]

Such "retained ring-pull" cans supplanted pull-off tabs in the United Kingdom in 1989 for soft drinks and 1990 for alcoholic drinks.[41]

The Stay-On-Tab (SOT) opening system resolved the ecological problem of the previous pull-tab system. It opened up another issue, still unresolved today, about hygiene: today the outside panel of the tab goes inside the can, sinking in the liquid.

One of the more recent modifications to can design was the introduction of the "wide mouth" can in the late 1990s.[42] The American Can Company, now a part of Rexam,[43] and Coors Brewing Company have owned wide mouth design patent (number D385,192)[44] since 1997. Other companies have similar designs for the wide mouth. Ball Corporation's from 2008 has a vent tube to allow direct airflow into the can reducing the number of gulps during the pour.[45]

Press button can

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One variation was the press button can,[46] which featured two pre-cut buttons—one small and one large—in the top of the can sealed with a plastic membrane. These buttons were held closed by the outward pressure of the carbonated drink. The consumer would open the can by depressing both buttons, which would result in two holes. The small hole would act as a vent to relieve internal pressure so the larger button could then be pressed down to create the hole used for consuming the drink. Consumers could also easily cut themselves on the edges of the holes or get their fingers stuck.

Press button cans were used by Pepsi in Canada from the 1970s to 1980s and Coors in the 1970s. They have since been replaced with pull tabs. Used in Australia, locally known as "pop-tops", for soft drinks from 1977 to the early 1980s. However, Heineken Brewery did bring back press- or push button cans on the market in Europe as a short-lived marketing strategy in the 1990s.

Full aperture end

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The Finnish brewery Fat Lizard uses "topless" cans where the entire lid is removed when opening the can.

Another variation on the drink can is the "full aperture end", where the entire lid can be removed – turning an aluminum can into a cup. Crown Holdings first designed the "360 End"[47] for use by SABMiller at the 2010 FIFA World Cup in South Africa.[48] It has been used by Anheuser-Busch InBev in China[49] and Brazil[50] and by the Sly Fox Brewing Company[51] in the United States.

Resealable lid

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Another variation on the drink can is to have a resealable lid. A version patented by Cogito Can[52] in France has been used by Groupe Casino, the French grocery chain for its private label energy drink.

Recycling

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See also: Aluminium recycling

The beverage container can be recycled, and clean aluminum has residual market value, but recycled cans still need to be diluted by up to 50% virgin aluminum because the sides and tops of the can are of different alloys. The acronym UBC, for used beverage container, is employed by such companies as Apple, Inc for reference to the material of its portable laptop cases.[53]

Design

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Most large companies serve their beverages in printed cans, where designs are printed on the aluminum and then crafted into a can. Alternatively, cans can be wrapped with a plastic design,[54] mimicking the printed can but allowing for more flexibility than printed cans.[55] A modern-day trend in craft alcohol is to design stickers to put on cans, allowing for smaller batches and quick changes for new flavors.[56]

Collecting

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A collection of drink cans in Dunsmuir, California

Beer can collecting was a minor fad in the late 1970s and 1990s. However, the hobby waned rapidly in popularity. The Beer Can Collectors of America (BCCA), founded in 1970, was an organization supporting the hobby, but has now renamed itself Brewery Collectibles Club of America to be more modern.[57]

As of late 2009, membership in the Brewery Collectibles Club of America was 3,570, down from a peak of 11,954 in 1978. Just 19 of the members were under the age of 30, and the members' average age had increased to 59.[58]

See also

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Notes

[edit]
  1. ^ a b "The Canmaker FAQ". Canmaker.com. Retrieved 2012-08-07.
  2. ^ Maxwell, DBS (1993). "Beer Cans: A Guide for the Archaeologist". Historical Archaeology. 27 (1): 95–113. doi:10.1007/BF03373561. JSTOR 25616219. S2CID 160267011.
  3. ^ Prior, Neil (2015-07-12). "Llanelli's Felinfoel brewery pioneered beer in cans". BBC News (South West Wales). Retrieved 2017-04-09.
  4. ^ "Working Abroad - Welsh Emigration: Tinplate". National Museum Wales. Retrieved 2022-01-05.
  5. ^ "Molson Coors Celebrates the 50th Anniversary of the Aluminum Can Introduced by Bill Coors in 1959". www.csrwire.com. Archived from the original on 2012-08-19. Retrieved 2022-01-05.
  6. ^ "Aluminum is In". Convenience Store News. Retrieved 15 October 2024.
  7. ^ "Ball's innovative pitches truly catching on". Packaging Strategies. Retrieved 15 October 2024.
  8. ^ Child, Katharine (25 October 2017). "Smaller soft drink sizes leave bitter taste of shrinkflation". sowetanlive.co.za. Retrieved 31 August 2024.
  9. ^ "2-piece DWI Can Dimensions". Sencon.com. Retrieved 2012-08-07.
  10. ^ Wiggins, Jenny; Flood, Chris (25 July 2008). "Coke to shrink size of cans in Hong Kong". www.ft.com. Retrieved 31 August 2024.
  11. ^ "Teeny weeny Coca-Cola Mini Can makes its in-store Hong Kong debut". Marketing-Interactive. 2019-04-29. Retrieved 2024-08-31.
  12. ^ "500ML King Can Beer". pns.hk. Retrieved 31 August 2024.
  13. ^ "All Items | Drinks & Beverages Delivery". Swire Coca-Cola eShop. Retrieved 2024-08-31.
  14. ^ "Our Beer". Retrieved 2020-06-15.
  15. ^ @tnichss, Tess Nichol Reporter, NZ Herald tess nichol@nzherald co nz (2017-09-21). "Coke responds to can shrink story, says price decrease recommended". NZ Herald. ISSN 1170-0777. Retrieved 2017-11-01.{{cite news}}: CS1 maint: multiple names: authors list (link)
  16. ^ Turner, Terence (2001). Canmaking For Can Fillers. Boca Raton: CRC Press. p. 23. ISBN 978-0-8493-9787-5.
  17. ^ Askeland, Donald R.; Haddleton, Frank; Green, Phil; Robertson, Howard (2013-11-11). The Science and Engineering of Materials. Springer. p. 408. ISBN 978-1-4899-2895-5.
  18. ^ "FAQs". Australian Aluminium Council.
  19. ^ "Coca-Cola Recycling" (PDF). EPA. p. 14.
  20. ^ Vela, M.; Toma, R. B.; Reiboldt, W.; Pierri, A. (1998). "Detection of aluminum residue in fresh and stored canned beer". Food Chemistry. 63 (2): 235–037. doi:10.1016/S0308-8146(97)00236-7.
  21. ^ Lopez, F.; Cabrera, C.; Lorenzo, M. L.; López, M. C. (2002). "Aluminum content of drinking waters, fruit juices and soft drinks: contribution to dietary intake". The Science of the Total Environment. 292 (3): 205–213. Bibcode:2002ScTEn.292..205L. doi:10.1016/S0048-9697(01)01122-6. PMID 12146520.
  22. ^ "Precoating of aluminum can sheet - Patent 3832962". www.freepatentsonline.com. Retrieved 2009-07-20.
  23. ^ "Keglined.com". Pssht.com. Archived from the original on 2017-10-20. Retrieved 2012-08-07.
  24. ^ Narvaez, Alfonso A. (1989-10-28). "E. C. Fraze, 76 - Devised Pull Tab". The New York Times. Retrieved 2017-04-09.
  25. ^ "When and why did breweries stop using pop-top cans?". The Takeout. 11 August 2019. Retrieved 2022-01-05.
  26. ^ Official Gazette of the United States Patent Office 1968, p. 1050.
  27. ^ "Press-Tab". Lewiston Morning Tribune. (Idaho). (advertisement). December 21, 1976. p. 8B.
  28. ^ "Ring pull can introduced in USA - Australian food history timeline". Australian Food Timeline. 1960-09-20. Retrieved 2022-01-05.
  29. ^ Singh, S. P.; Gorzynski (July 1989). "Effect of Vibration as a Cause of Leakage in aluminum Beer Cans in Palletized Loads". J. Testing and Evaluation. 26 (4).
  30. ^ Kondakow, Mikolaj (1951-09-11). "Patent CA476789: Crimped cap removers". Canadian Patents Database. Retrieved 2017-10-04.
  31. ^ Burrington, JD (1976). "Aluminum "pop tops". A hazard to child health". JAMA. 235 (24): 2614–7. doi:10.1001/jama.1976.03260500030022. PMID 946866.
  32. ^ US2842295A, Anthony, Bajada, "Lid closure for can containers", issued 1958-07-08 
  33. ^ US4024980A, Kneusel, Raymond H. P. & Potts, Vinson S., "Easy opening can end having a closure plug", issued 1977-05-24 
  34. ^ USRE28910E, Dalli, Alan George; Debenham, Michael & Schackleford, Ralph Edward, "Push-in easy-opening closures", issued 1976-07-20 
  35. ^ US3759206A, Dalli, A.; Debenham, M. & Schackleford, R., "Push-in easy-opening closures", issued 1973-09-18 
  36. ^ CA575550A, Anthony, Bajada, "Lid closure for can containers", issued 1959-05-12 
  37. ^ "Patent US D244915 - End closure for a container - Google Patents". Retrieved 19 March 2015.
  38. ^ Reynolds Metals Co. v. Continental Group, Inc., 525 F. Supp. 950, July 6, 1981
  39. ^ US4030631A, Brown, Omar L., "Easy-open ecology end", issued 1977-06-21 
  40. ^ "Patent US4030631 - Easy-open ecology end - Google Patents". Retrieved 2014-01-24.
  41. ^ "History of the can" (PDF). Can Makers. Archived from the original (PDF) on 2015-09-22. Retrieved 2012-08-07.
  42. ^ Patton, Phil (1997-11-27). "Public Eye; Wide-mouth design: less glug in beer, more chug in Mountain Dew". The New York Times.
  43. ^ Cowell, Alan (2000-04-04). "COMPANY NEWS; REXAM TO BUY AMERICAN NATIONAL CAN GROUP". The New York Times.
  44. ^ "United States Patent: D385192". Patft.uspto.gov. Archived from the original on 2018-09-21. Retrieved 2013-10-05.
  45. ^ paywalled page
  46. ^ "Press Button Can — A Brief History of Flat Top Beer Cans". Complex. 2012-06-27. Retrieved 2013-10-05.
  47. ^ "360 end".
  48. ^ "Crown History | Crown Holdings, Inc". Crowncork.com. Archived from the original on 2015-02-15. Retrieved 2013-10-05.
  49. ^ "AB InBev and Crown Say "Gan Bei!" to a New Packaging Format | Crown Holdings, Inc". Crowncork.com. 2012-10-09. Archived from the original on 2014-10-20. Retrieved 2013-10-05.
  50. ^ Cohen, Jim. "Brazil Transforms Beer Can into Beer Cup". Beer Universe. Beer Universe, Inc. Retrieved 18 March 2014.
  51. ^ "Sly Fox Beer Opens Up Flavor and Aroma with the 360 Lid | Sly Fox Beer Phoenixville & Pottstown Pennsylvania". Slyfoxbeer.com. 2013-03-25. Archived from the original on 2013-10-12. Retrieved 2013-10-05.
  52. ^ "accueil - COGITOcan". Archived from the original on 4 May 2019. Retrieved 18 December 2020.
  53. ^ "Apple Patents reveal how the Aluminum Unibody MacBook Enclosure is made from Recycled Pop and Beer Cans & more". Patenly Apple. March 2021.
  54. ^ "Canning Your Brands: Shrink Wraps & Sticker Labels". 2018-08-07.
  55. ^ "Beer can labels".
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  58. ^ Kesmodel, David (December 9, 2009). "Behold the Beer Can, Its Beauty Faded in the Eyes of the Young". The Wall Street Journal.

References

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