WO1998049065A1 - An improved bottom profile for a can - Google Patents
An improved bottom profile for a can Download PDFInfo
- Publication number
- WO1998049065A1 WO1998049065A1 PCT/EP1997/002241 EP9702241W WO9849065A1 WO 1998049065 A1 WO1998049065 A1 WO 1998049065A1 EP 9702241 W EP9702241 W EP 9702241W WO 9849065 A1 WO9849065 A1 WO 9849065A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- dome
- dimples
- seating
- outwardly
- accordance
- 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
- the invention relates to a thin metal pressure-resistant can comprising a can body having a deep-drawn and wall-ironed cylindrical side wall, such as for instance a beverage can. Further the invention relates to a metal can body comprising such an improved bottom profile.
- beverage cans of the type mentioned in the preamble which cans are manufactured in very large numbers, ever more lighter in weight by starting with a thinner basic material.
- a reduction of the material thickness of beverage cans for instance from a thickness of the basic steel material of 0.26 mm to less than 0.22 mm, it appeared that the resistance against an internal a pressure of over 100 psi in particular of existing bottoms of standard beverage cans are not in all cases sufficient, causing the occurrence of unacceptable deformation of the beverage cans.
- Cans having a bottom profile comprising an outwardly convexed bottom integrally with said body are known from The Canmaker, November 1996, pp. 43 - 44, "Light years ahead", and European Patent Application EP-A-040014.
- a bottom profile according to said article comprises a flat bottom, which has at its centre an inward flat projection.
- An object of the present invention is to provide a can with an alternative bottom and bottom profile, which has a higher resistance so as to allow thinner basic materials to be used.
- the can in accordance with the invention is characterized in that the can body comprises an outwardly convexed bottom integrally with said body and an inwardly projecting dome.
- the bottom of the beverage can is more resistant against internal pressure and meets the requirements set out above using thinner materials.
- the dome which is relatively small compared to the diameter of the can, can expand into convex shape as an indication of an unexpectedly pressure increase in a closed beverage can.
- a thin-walled can with an outwardly convex bottom integrally with said body has the required pressure resistance and is easy to manufacture.
- a preferred embodiment of the can in accordance with the invention is characterized in that the dome has a diameter in the range of 18 - 30 mm for a can with a diameter of more than 55 mm, and more preferably by the dome has a diameter in the range of 20 - 25 mm.
- the can has a plurality of seating dimples which allows the can to stand more stable on a flat surface.
- the can in accordance with the invention is from a basic steel material thickness of less than 0.22 mm, and more preferably of less than 0.20 mm. By this it is achieved that the can itself weights 20 grams, while it is able to withstand the required pressure of 100 psi.
- the can according to the invention is made of a packaging steel and typically has a side wall thickness of said body after wall-ironing equal to or less than 0.10 mm, even equal to or less than 0.06 mm.
- the seating dimples extend below the lowest part of the convex bottom and the setting area is offset within practical limits towards the periphery consistent with the requirements of adequate strength.
- the number of seating dimples can be chosen freely.
- the height of the seating dimples relative to the convex bottom depends significantly on the requirement whether the can should be stackable or not. When it is not required that the can is stackable with other cans of a similar type, the height of the seating dimples can be kept as low as possible, preferably in the range of up to 4 mm. This allows for a stable positioning of the can on a flat surface. Relatively short seating dimples are easy to produce in the convex shaped bottom of a can.
- the seating dimples can be attached to the bottom of the can in various manners, such as welding or adhesion. In a preferred embodiment the dimples are integrally with said can body.
- Fig. 1 gives schematically a standard 60 - 65 mm diameter can body part in accordance with the state of the art
- Fig. 2 gives schematically a part of a can body part in accordance with the invention
- Fig. 3 gives schematically a part of a can body part in accordance with the invention, with a plurality of seating dimples;
- Fig. 4 gives schematically a can body part as function of the height of the seating dimples.
- Fig. 1 shows a part of the bottom of an axi-symmetrical can comprising a standing rim (1) and a hollow part towards the inside, also called dome (2).
- Fig. 2 shows a part of the bottom of the can in accordance with the invention comprising an outwardly convexed bottom and a small inwardly projecting dome at the centre of the bottom, which dome can flop out as an indication of an unexpectedly pressure increase in a closed beverage can.
- the dimensions of the dome are set so that the dome will deform significantly at a pressure of 7 bar or more.
- Fig. 3 shows a part of the bottom of the can in accordance with the invention which also includes a plurality of seating dimples. These seating dimples allow the can to stand more stable on a flat surface.
- Fig 4A shows a part of an axi-symmetrical can body with an outwardly convexed bottom with the dome in accordance with the invention.
- Fig. 4B shows a part of a can body as shown in Fig. 4A, but also including seating dimples which allow the can for a stable positioning on a flat surface.
- Fig. 4C shows a part of a can body as shown in Fig. 4B, but with higher seating dimples, which makes the can stackable to a can with for example an at least partly outwardly projecting stay-on-tab lid.
Landscapes
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Mechanical Engineering (AREA)
- Containers Having Bodies Formed In One Piece (AREA)
- Rigid Containers With Two Or More Constituent Elements (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
- Image Analysis (AREA)
- Electron Beam Exposure (AREA)
- Installation Of Indoor Wiring (AREA)
- Prostheses (AREA)
- Medical Preparation Storing Or Oral Administration Devices (AREA)
Abstract
Description
Claims
Priority Applications (8)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT97922935T ATE232813T1 (en) | 1997-04-29 | 1997-04-29 | BOTTOM CONTOUR FOR A CAN |
DK97922935T DK1051330T3 (en) | 1997-04-29 | 1997-04-29 | Bottom profile for a can |
AU28899/97A AU2889997A (en) | 1997-04-29 | 1997-04-29 | An improved bottom profile for a can |
EP97922935A EP1051330B1 (en) | 1997-04-29 | 1997-04-29 | An improved bottom profile for a can |
BR9714701-0A BR9714701A (en) | 1997-04-29 | 1997-04-29 | Enhanced bottom profile for can |
DE69719228T DE69719228T2 (en) | 1997-04-29 | 1997-04-29 | FLOOR CONTOUR FOR A CAN |
PCT/EP1997/002241 WO1998049065A1 (en) | 1997-04-29 | 1997-04-29 | An improved bottom profile for a can |
ES97922935T ES2192270T3 (en) | 1997-04-29 | 1997-04-29 | AN IMPROVED BACKGROUND PROFILE FOR A CAN. |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/EP1997/002241 WO1998049065A1 (en) | 1997-04-29 | 1997-04-29 | An improved bottom profile for a can |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1998049065A1 true WO1998049065A1 (en) | 1998-11-05 |
Family
ID=8166614
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP1997/002241 WO1998049065A1 (en) | 1997-04-29 | 1997-04-29 | An improved bottom profile for a can |
Country Status (8)
Country | Link |
---|---|
EP (1) | EP1051330B1 (en) |
AT (1) | ATE232813T1 (en) |
AU (1) | AU2889997A (en) |
BR (1) | BR9714701A (en) |
DE (1) | DE69719228T2 (en) |
DK (1) | DK1051330T3 (en) |
ES (1) | ES2192270T3 (en) |
WO (1) | WO1998049065A1 (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1177989A1 (en) * | 2000-08-01 | 2002-02-06 | Linhardt GmbH & Co. KG | Aluminium cigar sleeve as well as method and press tool for the manufacture of such a sleeve |
WO2011027910A1 (en) * | 2009-09-02 | 2011-03-10 | 麒麟麦酒株式会社 | Bottomed cylinder-shaped can container body and beverage can product having the same filled with beverage |
JP2011051625A (en) * | 2009-09-02 | 2011-03-17 | Kirin Brewery Co Ltd | Can container body with cylindrical body shape having bottom and beverage can product filled with liquid using the can container body |
JP2011068361A (en) * | 2009-09-24 | 2011-04-07 | Kirin Brewery Co Ltd | Bottomed cylindrical can container body and beverage can product having the same filled with beverage |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20140263372A1 (en) * | 2013-03-15 | 2014-09-18 | Silgan Containers Llc | Container with concentric segmented can bottom |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2248981A1 (en) * | 1973-10-25 | 1975-05-23 | American Can Co | Pressurised container with a stable base - has part concave deformable base with inclined circumference |
FR2384676A1 (en) * | 1977-03-26 | 1978-10-20 | Metal Box Co Ltd | METAL BOX |
FR2398669A1 (en) * | 1977-07-29 | 1979-02-23 | Carnaud Sa | Preserved food container with pressed bottom - has support ring of defined curvature and height pressed in bottom to provide container base |
DE2817137A1 (en) * | 1977-01-18 | 1979-10-31 | Schmalbach Lubeca | Pressurised beer packaging can - has base protrusions on inner pitch circle bridging gaps between outer ones |
US4732292A (en) * | 1978-06-16 | 1988-03-22 | Schmalbach-Lubeca Gmbh | Flexible bottom profile for drawn and ironed beverage can |
US5421480A (en) * | 1993-04-08 | 1995-06-06 | Reynolds Metals Company | Thin-walled can having a displaceable bottom |
FR2738001A1 (en) * | 1995-08-24 | 1997-02-28 | Lorraine Laminage | Circular metal food can |
-
1997
- 1997-04-29 DK DK97922935T patent/DK1051330T3/en active
- 1997-04-29 EP EP97922935A patent/EP1051330B1/en not_active Revoked
- 1997-04-29 DE DE69719228T patent/DE69719228T2/en not_active Expired - Fee Related
- 1997-04-29 ES ES97922935T patent/ES2192270T3/en not_active Expired - Lifetime
- 1997-04-29 AU AU28899/97A patent/AU2889997A/en not_active Abandoned
- 1997-04-29 BR BR9714701-0A patent/BR9714701A/en active Search and Examination
- 1997-04-29 AT AT97922935T patent/ATE232813T1/en not_active IP Right Cessation
- 1997-04-29 WO PCT/EP1997/002241 patent/WO1998049065A1/en not_active Application Discontinuation
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2248981A1 (en) * | 1973-10-25 | 1975-05-23 | American Can Co | Pressurised container with a stable base - has part concave deformable base with inclined circumference |
DE2817137A1 (en) * | 1977-01-18 | 1979-10-31 | Schmalbach Lubeca | Pressurised beer packaging can - has base protrusions on inner pitch circle bridging gaps between outer ones |
FR2384676A1 (en) * | 1977-03-26 | 1978-10-20 | Metal Box Co Ltd | METAL BOX |
FR2398669A1 (en) * | 1977-07-29 | 1979-02-23 | Carnaud Sa | Preserved food container with pressed bottom - has support ring of defined curvature and height pressed in bottom to provide container base |
US4732292A (en) * | 1978-06-16 | 1988-03-22 | Schmalbach-Lubeca Gmbh | Flexible bottom profile for drawn and ironed beverage can |
US5421480A (en) * | 1993-04-08 | 1995-06-06 | Reynolds Metals Company | Thin-walled can having a displaceable bottom |
FR2738001A1 (en) * | 1995-08-24 | 1997-02-28 | Lorraine Laminage | Circular metal food can |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1177989A1 (en) * | 2000-08-01 | 2002-02-06 | Linhardt GmbH & Co. KG | Aluminium cigar sleeve as well as method and press tool for the manufacture of such a sleeve |
WO2011027910A1 (en) * | 2009-09-02 | 2011-03-10 | 麒麟麦酒株式会社 | Bottomed cylinder-shaped can container body and beverage can product having the same filled with beverage |
JP2011051625A (en) * | 2009-09-02 | 2011-03-17 | Kirin Brewery Co Ltd | Can container body with cylindrical body shape having bottom and beverage can product filled with liquid using the can container body |
JP2011068361A (en) * | 2009-09-24 | 2011-04-07 | Kirin Brewery Co Ltd | Bottomed cylindrical can container body and beverage can product having the same filled with beverage |
Also Published As
Publication number | Publication date |
---|---|
DE69719228D1 (en) | 2003-03-27 |
DK1051330T3 (en) | 2003-06-16 |
DE69719228T2 (en) | 2003-11-20 |
EP1051330B1 (en) | 2003-02-19 |
BR9714701A (en) | 2000-06-13 |
ES2192270T3 (en) | 2003-10-01 |
EP1051330A1 (en) | 2000-11-15 |
ATE232813T1 (en) | 2003-03-15 |
AU2889997A (en) | 1998-11-24 |
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