WO1999039981A1 - Expanded cans - Google Patents
Expanded cans Download PDFInfo
- Publication number
- WO1999039981A1 WO1999039981A1 PCT/GB1999/000195 GB9900195W WO9939981A1 WO 1999039981 A1 WO1999039981 A1 WO 1999039981A1 GB 9900195 W GB9900195 W GB 9900195W WO 9939981 A1 WO9939981 A1 WO 9939981A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- pattern
- side wall
- radius
- pattern elements
- elements
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D1/00—Containers having bodies formed in one piece, e.g. by casting metallic material, by moulding plastics, by blowing vitreous material, by throwing ceramic material, by moulding pulped fibrous material, by deep-drawing operations performed on sheet material
- B65D1/12—Cans, casks, barrels, or drums
- B65D1/14—Cans, casks, barrels, or drums characterised by shape
- B65D1/16—Cans, casks, barrels, or drums characterised by shape of curved cross-section, e.g. cylindrical
- B65D1/165—Cylindrical cans
Definitions
- This invention relates to expanded cans.
- a can having a cylindrical side wall with a regular pattern of expanded elements.
- the cylindrical can side wall has either an integral base and a single can end (as in a so-called “two-piece” can) or is closed at both ends (as in a so-called “three-piece” or an aerosol can) .
- Cans having a patterned side wall have been produced in order to improve resistance against deformation by external pressure.
- These known cans have pattern elements which are pressed into the side wall of the can blank in order to provide improved axial load or panel performance . Since the elements are only provided for structural reasons, any "pattern" is often covered by a product label. In any case, these cans have only achieved limited shape definition, i.e. a shape which is clearly visible to a consumer, and reduce the capacity of the can of a particular aspect ratio.
- the Applicant has found that cans according to the present invention have great visual impact without reducing the can capacity of a particular aspect ratio. Furthermore, by varying the convex radius according to its distance from the centre of the element, splitting of the can side wall, especially at any corners of the pattern element, due to expansion is substantially avoided whilst maintaining definition of the pattern element shape.
- the expansion of any point on an expanded pattern element is preferably inversely proportional to its distance from the centre of the pattern element .
- the pattern elements are polygonal. The polygons may each comprise between 3 and 10 sides. Any of the pattern elements may include, in addition to one or more expanded regions, one or more parts which are formed by depressing the cylindrical side wall of the can blank. The sides of the pattern elements may be at the original can side wall diameter.
- the pattern elements may be curved in outline, for example tear drop shaped, circular, etc.
- the sides of any of the pattern elements are linear, curved, or comprise a complex curve.
- the sides of any of the pattern elements may meet at a radius, the maximum size of which is preferably directly proportional to the size of the pattern element.
- the individual pattern elements may touch or overlap each other, or may themselves be separated by spaces either longitudinally or circumferentially or both.
- One or more spaces between columns of pattern elements may be provided for a logo, print or label.
- the patterned side wall may be expanded by anything from 2% to 20%, dependent on pattern element size.
- the expansion is preferably not greater than 10%.
- the maximum expansion for a two piece can is limited by the degree of work hardening of the can side wall.
- the can blank is usually formed from aluminium or steel or alloys of either of these.
- the can blank side wall may be between 0.075 mm and 0.15 mm in thickness if made of aluminium, typically about 0.1 mm. If the can blank is of steel, the thickness of the side wall may be between 0.06 mm and 0.18 mm, typically about 0.08 mm.
- the closed and pressurised can may withstand up to 7 bar without pattern reversal. By pattern reversal is meant that radially inwardly extending parts of the pattern are pushed outwardly by pressure inside the can. This at least diminishes pattern definition and at worst, over 7 - 4 -
- bar internal pressure may result in buckling and/or loss of any visual pattern at all.
- the rows of pattern elements are out of phase with each other such that elements of adjacent rows are displaced longitudinally.
- the patterned elements may be positioned anywhere on the can side wall and it may be preferred to include a margin at either or both ends of the side wall. This margin may be the same diameter as the original can blank side wall or may be expanded in the same way as the pattern.
- Can expansion may be achieved by any of a variety of known methods such as by using an expanding mandrel, fluid jets, a roller device which rolls around and/or up the inner side wall, or by fluid pressure in a closed can. This last is sometimes referred to as blow forming the fluid is air. In some cases, particularly blow forming, the can is expanded to the shape of a mould.
- Figure 1 is a side view of a can having a first pattern
- Figure 2 is an enlarged developed view of an element of the pattern of Figure 1 ;
- Figure 3 is a developed side view of a second embodiment of pattern element; and Figure 4 is a section through the pattern element of figure 3.
- Figure 1 shows a can body 1 having a side wall with a regular expanded pattern 2 of diamond-shaped elements in a central region and upper and lower expanded regions 3 and 4.
- the diamond pattern 2 comprises six circumferential rows, hereafter referred to as "layers".
- layers 5 having complete diamonds, the extreme layers 6,7 being partial elements which are blended into the side wall above or below the pattern respectively.
- the pattern extends around the whole circumference of the can body, thereby comprising fifteen complete diamond pattern elements.
- the can body blank has a cylindrical side wall of 66 mm diameter. This has been expanded in the centre of the diamonds of the patterned region 2 by 2.25% and in the upper and lower regions 3,4 by 8%.
- the expansion method of the example was by pressurised fluid such as air. Larger expansion of the pattern elements would be achievable by different expansion methods without splitting the can side wall.
- Figure la shows the curvature of the pattern elements as a section through X-X of the can side wall, passing through the centre of two pattern elements 10.
- the longitudinal central axis L of each diamond is a smooth continuous externally convex, i.e. expanded, curve having a radius R L of 56 to 57 mm.
- This curve is blended into a "flat" F, i.e. the original diameter cylindrical side wall, by an externally concave radius R F of 1 mm.
- a side wall of a diamond pattern element 10 of figure 1 is shown in figure 2.
- This diamond has straight side walls 11, 8.5 mm in length l s , which meet at radii r of approximately 2 mm, typically 1.96 mm.
- the size of these radii r depends on the size of the pattern element, since the elements in this example are small so as to obtain 15 elements around the can circumference, the radii r must be correspondingly small in order not to lose the definition of the pattern element. If these radii were much larger for this size of element then the element would not appear to be diamond-shaped.
- the axial length l a of each of the complete diamonds is 19.25 mm.
- the depth of the diamond pattern element may vary along each side so that there is less deformation of the metal of the can at the "corners" 12 where the sides of the pattern elements meet. This depth variation is achieved by varying the size of the convex radius R L in direct proportion to its distance from the centre of the pattern element . Since the corners 12 are further from the centre than are, for example, the centres of the sides, the value of R L is greater at the corners and the deformation consequently less severe.
- FIGS 3 and 4 show one of many alternative embodiments of pattern element which are within the scope of the present invention.
- This pattern element 20 is hexagonal in shape and may comprise part of a regular - 7 -
- pattern comprising anything from two such elements around the can circumference up to as many as ten or even more. It will be appreciated that the definition of the shape of the pattern elements will diminish as more are provided around the can side wall since the maximum amount of expansion possible without risk of splitting will decrease as the number of pattern elements increases. The expansion method will also dictate the amount of expansion possible without damage or failure.
- two hexagonal pattern elements 20 as shown in figures 3 and 4 were provided around a 66 mm diameter can body so that effectively two columns of pattern elements were formed.
- the side wall of the can body was completely covered by the pattern, leaving no margins either end as in the example of figures 1 and 2. This resulted in a regular pattern of two and a half layers of hexagons, one half hexagon being at the can base end in one column and the other half hexagon being at the top of the second column.
- FIG. 4 A side section through the line Y-Y is shown in figure 4.
- the pattern elements 20 are expanded to a relatively smooth curved central section which may have comprise a curve having a - 8 -
- convex radius R h which varies from 95.5 mm to 1990 mm and is blended into groove-like areas between pattern elements by a convex radius R b of typically about 8 mm, depending on the amount of expansion. A value of 4 mm, for example, would also provide satisfactory pattern definition.
- the "grooves" themselves comprise an externally concave radius R g of typically 2 mm. It is considered likely that a groove radius of less than 2 mm would risk splitting of the can if the can were expanded by air pressure. It should be appreciated that the "base" of the groove constitutes the side of hexagonal pattern element 20 and is at the original can diameter.
- the sides 21 of the pattern elements in this example comprise Bezier curves when viewed in plan but other complex curves could be used.
- the sides 21 meet at a radius which is constantly varying but at the actual corner 22 is about 5 mm.
- a typical axial length L h for the hexagonal pattern elements of this example is 45.25 mm.
- the degree of expansion of the pattern elements may vary in many respects such as the area of individual elements, the expansion method, the can diameter and wall thickness or the material of the can body. Similarly, the curvature of the side wall after such expansion may be varied, particularly where a mould - 9 -
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US09/601,613 US6220475B1 (en) | 1998-02-04 | 1999-01-20 | Expanded cans |
CA002318797A CA2318797A1 (en) | 1998-02-04 | 1999-01-20 | Expanded cans |
EP99901760A EP1054811A1 (en) | 1998-02-04 | 1999-01-20 | Expanded cans |
AU21762/99A AU2176299A (en) | 1998-02-04 | 1999-01-20 | Expanded cans |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GBGB9802264.3A GB9802264D0 (en) | 1998-02-04 | 1998-02-04 | Expanded cans |
GB9802264.3 | 1998-02-04 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1999039981A1 true WO1999039981A1 (en) | 1999-08-12 |
Family
ID=10826363
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/GB1999/000195 WO1999039981A1 (en) | 1998-02-04 | 1999-01-20 | Expanded cans |
Country Status (6)
Country | Link |
---|---|
US (1) | US6220475B1 (en) |
EP (1) | EP1054811A1 (en) |
AU (1) | AU2176299A (en) |
CA (1) | CA2318797A1 (en) |
GB (1) | GB9802264D0 (en) |
WO (1) | WO1999039981A1 (en) |
Families Citing this family (56)
Publication number | Priority date | Publication date | Assignee | Title |
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USD736091S1 (en) | 2006-11-14 | 2015-08-11 | Millercoors, Llc | Beverage container |
US20080110853A1 (en) * | 2006-11-14 | 2008-05-15 | Coors Brewing Company | Container With Multiple Surface Depressions for Enhancing Insulative Properties |
USD653124S1 (en) | 2007-12-17 | 2012-01-31 | Silgan Containers Llc | Container |
USD652740S1 (en) | 2008-02-27 | 2012-01-24 | Silgan Containers Llc | Container |
US20090218349A1 (en) * | 2008-02-29 | 2009-09-03 | Silgan Containers Corporation | Vacuum container with protective features |
USD672663S1 (en) | 2008-02-27 | 2012-12-18 | Silgan Containers Llc | Container |
US8141741B2 (en) * | 2008-02-27 | 2012-03-27 | Silgan Containers Llc | Vacuum container with protective features |
USD632190S1 (en) | 2008-03-28 | 2011-02-08 | Silgan Containers Llc | Container |
USD614970S1 (en) | 2008-03-28 | 2010-05-04 | Silgan Containers Llc | Container |
USD626015S1 (en) | 2008-03-28 | 2010-10-26 | Silgan Containers Llc | Container |
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USD632187S1 (en) | 2008-03-28 | 2011-02-08 | Silgan Containers Llc | Container |
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USD652741S1 (en) | 2008-04-04 | 2012-01-24 | Silgan Containers Llc | Container |
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USD653562S1 (en) | 2008-04-04 | 2012-02-07 | Silgan Containers Llc | Container |
USD612732S1 (en) | 2008-05-12 | 2010-03-30 | Silgan Containers Llc | Container |
USD624438S1 (en) | 2008-05-12 | 2010-09-28 | Silgan Containers, Llc | Container |
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USD651526S1 (en) | 2009-12-29 | 2012-01-03 | Silgan Containers Llc | Container |
USD658078S1 (en) | 2010-04-30 | 2012-04-24 | Silgan Containers Llc | Container |
USD656042S1 (en) | 2010-10-01 | 2012-03-20 | Silgan Containers Llc | Container |
USD787952S1 (en) | 2012-08-29 | 2017-05-30 | Ball Corporation | Contoured neck for a beverage container |
USD791606S1 (en) * | 2012-10-18 | 2017-07-11 | Ty Cobb | Beverage container |
US11111050B2 (en) * | 2014-07-01 | 2021-09-07 | Mead Johnson Nutrition Company | Pillar-shaped container |
USD754485S1 (en) * | 2014-09-18 | 2016-04-26 | Starline Global Inc. | Beverageware |
USD754484S1 (en) * | 2014-09-18 | 2016-04-26 | Starline Global Inc. | Beverageware |
USD815910S1 (en) * | 2016-06-23 | 2018-04-24 | Anhui Inno-Sign International Co., LTD | Tumbler |
USD808727S1 (en) * | 2016-07-13 | 2018-01-30 | Anhui Inno-Sign Int'l | Double wall vacuum mug |
USD853793S1 (en) * | 2017-01-05 | 2019-07-16 | Anhui Inno-Sign Int'l Co., Ltd | Geometric double wall vacuum tumbler |
USD820640S1 (en) * | 2017-01-10 | 2018-06-19 | Decorline Inc | Ceremonial cup |
USD837600S1 (en) * | 2017-06-16 | 2019-01-08 | Ets Express, Inc. | Beverage container |
USD837599S1 (en) * | 2017-06-16 | 2019-01-08 | Ets Express, Inc. | Beverage container |
JP7064334B2 (en) * | 2018-01-11 | 2022-05-10 | ユニバーサル製缶株式会社 | Can body manufacturing equipment and manufacturing method |
USD920799S1 (en) * | 2019-01-18 | 2021-06-01 | Altium Packaging Lp | Container |
US11027884B2 (en) * | 2019-01-18 | 2021-06-08 | Altium Packaging Lp | Container and method of manufacturing the same |
JP7346909B2 (en) * | 2019-05-22 | 2023-09-20 | 東洋製罐株式会社 | positive pressure can |
USD927982S1 (en) | 2019-07-18 | 2021-08-17 | Altium Packaging Lp | Container |
WO2021146097A1 (en) | 2020-01-14 | 2021-07-22 | Altium Packaging Lp | Tubular container |
USD993043S1 (en) * | 2020-04-02 | 2023-07-25 | Crown Packaging Technology, Inc. | Can with embossed pattern |
USD968229S1 (en) | 2021-01-08 | 2022-11-01 | Altium Packaging Lp | Container |
USD1011889S1 (en) | 2021-06-07 | 2024-01-23 | Altium Packaging Lp | Container |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3335902A (en) * | 1964-12-28 | 1967-08-15 | Continental Can Co | Superimposed axial-circumferential beading of cans |
EP0441618A1 (en) * | 1990-02-07 | 1991-08-14 | Toyo Seikan Kaisha Limited | Packing can |
WO1996040457A2 (en) * | 1995-06-07 | 1996-12-19 | American National Can Company | Reshaped container and method and apparatus for reshaping a container |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5443371Y2 (en) * | 1975-05-30 | 1979-12-14 | ||
EP0044618A3 (en) * | 1980-06-19 | 1982-06-30 | Itt Industries, Inc. | Liquid crystal display devices |
US5178289A (en) * | 1992-02-26 | 1993-01-12 | Continental Pet Technologies, Inc. | Panel design for a hot-fillable container |
-
1998
- 1998-02-04 GB GBGB9802264.3A patent/GB9802264D0/en not_active Ceased
-
1999
- 1999-01-20 CA CA002318797A patent/CA2318797A1/en not_active Abandoned
- 1999-01-20 EP EP99901760A patent/EP1054811A1/en not_active Ceased
- 1999-01-20 US US09/601,613 patent/US6220475B1/en not_active Expired - Fee Related
- 1999-01-20 AU AU21762/99A patent/AU2176299A/en not_active Abandoned
- 1999-01-20 WO PCT/GB1999/000195 patent/WO1999039981A1/en not_active Application Discontinuation
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3335902A (en) * | 1964-12-28 | 1967-08-15 | Continental Can Co | Superimposed axial-circumferential beading of cans |
EP0441618A1 (en) * | 1990-02-07 | 1991-08-14 | Toyo Seikan Kaisha Limited | Packing can |
WO1996040457A2 (en) * | 1995-06-07 | 1996-12-19 | American National Can Company | Reshaped container and method and apparatus for reshaping a container |
Also Published As
Publication number | Publication date |
---|---|
GB9802264D0 (en) | 1998-04-01 |
EP1054811A1 (en) | 2000-11-29 |
AU2176299A (en) | 1999-08-23 |
US6220475B1 (en) | 2001-04-24 |
CA2318797A1 (en) | 1999-08-12 |
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