EP0040014A1 - Convex bottom - two piece container - Google Patents

Convex bottom - two piece container Download PDF

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Publication number
EP0040014A1
EP0040014A1 EP81301830A EP81301830A EP0040014A1 EP 0040014 A1 EP0040014 A1 EP 0040014A1 EP 81301830 A EP81301830 A EP 81301830A EP 81301830 A EP81301830 A EP 81301830A EP 0040014 A1 EP0040014 A1 EP 0040014A1
Authority
EP
European Patent Office
Prior art keywords
dimples
container
bottom wall
wall
container according
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP81301830A
Other languages
German (de)
English (en)
French (fr)
Inventor
Robert J. Gruodis
Edward J. Hayes
William T. Franz
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Continental Group Inc
Original Assignee
Continental Group Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Continental Group Inc filed Critical Continental Group Inc
Publication of EP0040014A1 publication Critical patent/EP0040014A1/en
Withdrawn legal-status Critical Current

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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—Rigid or semi-rigid 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 or by deep-drawing operations performed on sheet material
    • B65D1/40—Details of walls
    • B65D1/42—Reinforcing or strengthening parts or members
    • 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
    • B65D25/00—Details of other kinds or types of rigid or semi-rigid containers
    • B65D25/20—External fittings
    • B65D25/24—External fittings for spacing bases of containers from supporting surfaces, e.g. legs
    • 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—Rigid or semi-rigid 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 or 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 thin metal containers.
  • Two-piece containers are well known. They comprise a body with an integral bottom at one end and a top end seamed to the other end of the body.
  • One of the problems encountered by the industry in forming a thin-walled metal can structure resided in forming ⁇ -suitable bottom which would seat the can in a stable position upon the conveyors. When empty, the cans are carried to the filler and then when the cans are filled, they are carried away to the packing stations. The way such cans were made was to form a callotte in the can bottom so as to hold the pressure in the can without deforming and to provide an annular seating rim about the edge of the can body to stabilize the can as it was being transported.
  • An example of such can is shown in U.S. Patent 3,029,507.
  • Other cans provide flexible bottoms which are concaved toward the interior of the can when unpressurized and expand into convex shape when pressurized.
  • An example of such can is shown in U.S. Patent 1,788,261.
  • the object of this invention is to provide a can which meets accepted standards of stability of a flat bottom can such that it will not easily tip and will withstand normal abuse of transport and stacking.
  • the present invention provides a thin metal container comprising a body providing a side wall an outwardly convexed bottom wall integrally formed with said body, a plurality of outwardly projecting seating dimples formed in said bottom wall having lower end portion extending below said bottom wall and providing seating surfaces for said container offset outwardly of the axes of respective dimples, said dimples being formed to provide transition areas with said bottom wall of relatively shallow angles.
  • a metal can made of H19-3004 aluminum or the like, which is drawn and wall- ironed. It comprises a thin wall body portion 3 of the order of .0118cm. (about .0047 inches) which at its upper end 4 is about .0184 cm. (about .0073 inches thick.)
  • the bottom 5 has an outwardly convexed generally spherical contour of about 12.38 cm. (about 4-7/8 inch) radius and has a thickness of about .0292 cm to .0312 cm. (about .0115 inches to .0123 inches) and about its periphery merges in a .0327 cm. (about a 1/8 inch) radius with the lower edge of the side wall of the body.
  • the bottom 5 is formed with a plurality of hollow outwardly bulged generally oval shaped lopsided dimples or feet 6 which project below the bottom surface 11.
  • six feet are provided spaced diametrically from each other center to center about 4.44 cm (about 1.75 inches) .
  • Each dimple has a cusp 7 of about 5 . 54 cm. (about . 218 inch) radius and merges on its internal side in a steep sided wall portion 9a with the bottom wall surface 9 in a radius of about .254 cm (about .100 inches).
  • the upper portion 8 of the container body wall with the flange portion 4 is triple-necked to reduce the diameter of the top end of the container.
  • An end member 10 is double seamed at 12 to the portion 4 of the body.
  • the end panel comprises an openable segment 14 which is defined by a score 15 adapted to be ruptured by lifting a lever tab 16 which has a hinge lug secured by a rivet 17 to the end panel as is well known in the art.
  • a stepped arrangement is provided by three necked in annular portions 18, 19 and 20 and the provision of the intervening frusto-conical juncture bands 24, 25 and 26, which are of relatively shallow conical angle not exceeding substantially 30° axial.
  • the positioning of the necked in regions adjacent to the end of the body obtains axial loading strength in the can body within require parameters.
  • each dimple is more abrupt or extends axially at an abrupt angle to the bottom 5 than the inner wall portion 30 of each dimple which merges with wall 5 at a relatively shallow angle of about 11-12° whereas wall 9a is closer between 30-47°.
  • each dimple is disposed as far as possible toward the peripheral edge 34 defined by the juncture of the bottom wall and side wall 3.
  • the inner concave of side of each dimple provides smooth transition surface areas allowing the spraying and deposition of coatings onto the entire bottom inside surface area. Sharp angled contours preclude and inhibit good even application of the coating.
  • Figure 5 illustrates tooling including an anvil 37 with a concave upper face and an opposing main punch 33 with a convex matching face 40 to form the wall 5 therebetween.
  • Periodically a plurality of concave pockets are formed in the anvil and an opposing punch 44 is slidable within guide bores 45 in the punch 39.
  • the forming face 46 on the punch 44 is convex and opposes a forming face in pocket.
  • the punches 39 and 44 advance and retract with respect to the surfaces 38 and 48 and form the metal of the bottom wall 5 therebetween.
  • the container has hemispherical dimples 50,50 which project from the initially preformed outwardly convexed bottom 5.
  • the dimples are equally spaced in an annular series and are eight in number. They project below the bottom surface 11.
  • the container has kidney-shaped dimples 60,60 which are four in'number equally spaced along the periphery 34 each is convexed outwardly and presents-a seating area 62 offset toward the periphery 54.
  • Outer wall 63 of each dimple is steeper than the inner wall 64.
  • kidney-shaped dimples 70 are longer and are three in number, arranged in an annular series.
  • the seating areas 71 are offset toward periphery 34 and the outer walls 72 are steeper than the inner walls 74.
  • the pronounced arcuate shape of the inner walls obtains added strength which is also true of the inner walls 64 of Figure 8.
  • the container has a toroidal continuous ring 80 provided which in cross section is non-symmetrical and has an outer wall which is steeper than inner wall and presents a seating area 85 offset toward periphery 34.
  • the feet or dimples extend below the spherical bottom and the seating area is offset within practical limits toward the periphery 34 consistent with the requirements of adequate strength and having non-sharp easy flowing interior surface contours which are easy to spray with coating layers or other materials.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Ceramic Engineering (AREA)
  • Rigid Containers With Two Or More Constituent Elements (AREA)
  • Containers Having Bodies Formed In One Piece (AREA)
  • Stackable Containers (AREA)
  • Details Of Rigid Or Semi-Rigid Containers (AREA)
EP81301830A 1980-05-13 1981-04-24 Convex bottom - two piece container Withdrawn EP0040014A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US14936380A 1980-05-13 1980-05-13
US149363 1980-05-13

Publications (1)

Publication Number Publication Date
EP0040014A1 true EP0040014A1 (en) 1981-11-18

Family

ID=22529952

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81301830A Withdrawn EP0040014A1 (en) 1980-05-13 1981-04-24 Convex bottom - two piece container

Country Status (10)

Country Link
EP (1) EP0040014A1 (cs)
JP (1) JPS578648A (cs)
KR (1) KR830006083A (cs)
AU (1) AU539873B2 (cs)
BR (1) BR8102944A (cs)
CA (1) CA1152012A (cs)
DE (1) DE3117347A1 (cs)
GB (1) GB2075461A (cs)
GR (1) GR74897B (cs)
MX (1) MX152873A (cs)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0200220A3 (en) * 1985-05-01 1988-07-06 House Food Industrial Co., Ltd. Container packed with instant food for use in microwave oven
EP0524098A1 (fr) * 1991-07-17 1993-01-20 Sollac Procédé et poinçon d'emboutissage pour la fabrication de récipients à paroi régulière
WO2009115760A3 (fr) * 2008-03-11 2009-12-10 Imagene Contenant destine a recevoir et conserver du materiel biologique, notamment de l'adn

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6038224U (ja) * 1983-08-23 1985-03-16 凸版印刷株式会社 薄肉金属缶
DE3414310A1 (de) * 1984-04-16 1985-10-24 Hoechst Ag, 6230 Frankfurt Traegerfolie fuer magnetische informationstraeger
DE19708826C3 (de) * 1996-12-01 2003-10-30 Hans Werner Franzer Behälter, insbesondere Dose, aus dünnwandigem Blech
JP5256155B2 (ja) * 2009-09-24 2013-08-07 麒麟麦酒株式会社 有底筒状体形状の缶容器本体およびそれに飲料を充填した飲料缶製品
WO2011027910A1 (ja) * 2009-09-02 2011-03-10 麒麟麦酒株式会社 有底筒状体形状の缶容器本体およびそれに飲料を充填した飲料缶製品
JP5256150B2 (ja) * 2009-09-02 2013-08-07 麒麟麦酒株式会社 有底筒状体形状の缶容器本体およびそれに飲料を充填した飲料缶製品

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2099514A1 (cs) * 1970-07-22 1972-03-17 Crown Cork & Seal Co
DE2701827A1 (de) * 1977-01-18 1978-07-20 Schmalbach Lubeca Dose fuer unter ueberdruck stehende verpackungsgueter
GB2014108A (en) * 1978-02-06 1979-08-22 Schlitz Brewing Co J Can Body

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2099514A1 (cs) * 1970-07-22 1972-03-17 Crown Cork & Seal Co
DE2701827A1 (de) * 1977-01-18 1978-07-20 Schmalbach Lubeca Dose fuer unter ueberdruck stehende verpackungsgueter
GB2014108A (en) * 1978-02-06 1979-08-22 Schlitz Brewing Co J Can Body

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0200220A3 (en) * 1985-05-01 1988-07-06 House Food Industrial Co., Ltd. Container packed with instant food for use in microwave oven
EP0524098A1 (fr) * 1991-07-17 1993-01-20 Sollac Procédé et poinçon d'emboutissage pour la fabrication de récipients à paroi régulière
FR2679158A1 (fr) * 1991-07-17 1993-01-22 Lorraine Laminage Procede et poincon d'emboutissage pour la fabrication de recipients a paroi reguliere.
WO2009115760A3 (fr) * 2008-03-11 2009-12-10 Imagene Contenant destine a recevoir et conserver du materiel biologique, notamment de l'adn
CN101970114B (zh) * 2008-03-11 2014-12-03 伊马热股份有限公司 一种用于容纳和存储生物材料，特别是dna材料的容器
US10155223B2 (en) 2008-03-11 2018-12-18 Imagene Container for receiving and storing biological material, especially DNA

Also Published As

Publication number Publication date
BR8102944A (pt) 1982-02-02
DE3117347A1 (de) 1982-05-19
AU6934481A (en) 1981-11-19
JPS578648A (en) 1982-01-16
GB2075461A (en) 1981-11-18
AU539873B2 (en) 1984-10-18
GR74897B (cs) 1984-07-12
KR830006083A (ko) 1983-09-17
MX152873A (es) 1986-06-25
CA1152012A (en) 1983-08-16

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Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): AT BE CH DE FR IT LU NL SE

17P Request for examination filed

Effective date: 19820504

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 19840214

RIN1 Information on inventor provided before grant (corrected)

Inventor name: GRUODIS, ROBERT J.

Inventor name: HAYES, EDWARD J.

Inventor name: FRANZ, WILLIAM T.