EP0512832B1 - Couvercle pour un seau - Google Patents

Couvercle pour un seau Download PDF

Info

Publication number
EP0512832B1
EP0512832B1 EP92304118A EP92304118A EP0512832B1 EP 0512832 B1 EP0512832 B1 EP 0512832B1 EP 92304118 A EP92304118 A EP 92304118A EP 92304118 A EP92304118 A EP 92304118A EP 0512832 B1 EP0512832 B1 EP 0512832B1
Authority
EP
European Patent Office
Prior art keywords
lid
pail
inclined portion
planar region
domed
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.)
Expired - Lifetime
Application number
EP92304118A
Other languages
German (de)
English (en)
Other versions
EP0512832A3 (en
EP0512832A2 (fr
Inventor
Jack Harley
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.)
Greif International Holding BV
Original Assignee
Koninklijke Emballage Industrie Van Leer BV
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 Koninklijke Emballage Industrie Van Leer BV filed Critical Koninklijke Emballage Industrie Van Leer BV
Publication of EP0512832A2 publication Critical patent/EP0512832A2/fr
Publication of EP0512832A3 publication Critical patent/EP0512832A3/en
Application granted granted Critical
Publication of EP0512832B1 publication Critical patent/EP0512832B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • B65D17/00—Rigid or semi-rigid containers specially constructed to be opened by cutting or piercing, or by tearing of frangible members or portions
    • B65D17/06—Integral, or permanently secured, end or side closures
    • B65D17/08—Closures secured by folding or rolling and pressing
    • B65D17/10—Closures secured by folding or rolling and pressing with interposed packing rings
    • 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
    • B65D79/00—Kinds or details of packages, not otherwise provided for
    • B65D79/005—Packages having deformable parts for indicating or neutralizing internal pressure-variations by other means than venting
    • B65D79/0087—Packages having deformable parts for indicating or neutralizing internal pressure-variations by other means than venting the deformable part being located in a closure, e.g. in caps or lids

Definitions

  • This invention relates to a lid for a pail which is used for the storage and transportation of materials and which is especially useful in the transportation of dangerous goods such as paint.
  • the present invention seeks to provide a lid for fastening a pail body which is more secure than lids at present in use on conventional pails and is less susceptible to damage and leakage if dropped.
  • a lid is clamped to the head seam of the pail.
  • One such head seam is described in GB-A-2189229.
  • the head seam comprises a compound curl formed around the outside of the upper rim of the pail.
  • a channel is formed around the periphery of the lid with downwardly directed flanges located at intervals around the lid.
  • a sealing compound is run into the channel on the lid and the lid is clamped onto the curl on the pail by means of a clamping tool applied to the flanges, thus squeezing the channel onto the curl around the periphery of the pail to create a seal.
  • the present invention provides an improved lid compared with conventional lids.
  • a metallic lid for attachment to the rim of a pail body, the lid comprising a central planar region, a plurality of concentric corrugations around the central region and an upstanding cylindrical wall portion, the upper extremity of which extends outwardly and then downwardly and has lugs at its outermost periphery (such a lid is known from WO-A-8905758 and from GB-A-2189229), is characterised in that , an inclined portion is provided which extends in a direction generally from the plane of the said planar region and in a direction which, when the lid is attached to the pail body, is towards the inside of the pail body, with a stiffening fold around the outer circumference of the inclined portion connecting it to the upstanding cylindrical wall portion, and in that the shape of the inclined portion approximates to part of a dome which would be formed by the lid if the corrugations and the planar region were domed without significant stretching of the metal of the lid.
  • the inclined portion is either frusto-conical or part spherical.
  • a pail comprising a pail body to which is fixed a lid constructed in accordance with the present invention and this aspect is featured in following claim 5.
  • a pail shown in part in Figure 2, has a capacity of 20 litres and its body 10 is made from 27 gauge (0.43 mm thick) mild steel.
  • the first stage in the manufacture of the pail body 10 is a conventional procedure involving rolling to form a cylinder and crush welding to produce a longitudinal seam to form the pail body 10. Other welding techniques may be used to form this longitudinal seam.
  • the pail body 10 has a compound curl 12 formed at its upper rim exactly as described in GB-A-2189229, and a bottom wall 13 joined to the pail body 10 exactly as described in GB-A-2189215.
  • a lid 14 which is constructed in accordance with the present invention is shown in Figure 1 and comprises a metal disc (typically 27 gauge (0.43 mm thick) mild steel).
  • the lid 14 comprises a central generally planar region 15 and a plurality of concentric circular corrugations 16.
  • Around the circumference of the outermost of the corrugations 16 is an inclined portion 17 which extends from a ring 22 in a plane 18 which includes the planar region 15, generally outwardly and in a direction which, when the lid 14 is attached to the pail body 10, is towards the inside of the pail body.
  • a stiffening fold 19 which leads to an upstanding cylindrical wall 20 which is of the same diameter as that of the inside surface of the rim of the pail body 10, to which the lid is to be fixed.
  • the upper region of the wall portion 20 is curved outwardly and downwardly and has a series of lugs 21 formed at the outermost periphery of the lid 14.
  • the shape of the inclined portion 17 is very important.
  • the portion 17 may be frusto-conical or it may be part-spherical. In either case the shape approximates to that of part of an imaginary dome, based on that which would be formed by the lid if the corrugations 16 and the planar region 15 were domed without significant stretching of the metal of the lid.
  • the lid 14 of Figure 1 is offered to the curl 12 of the paid body 10 and the dimension D (see Figure 3) of the upstanding wall 20 is such that the planar region 15 lies in the plane 18 normal to the pail body 10 but below the lowest part of the compound curl 12.
  • a sealing compound 23 is placed in the recess formed in the lid 14 to form a seal between lid 14 and body 10 and the lugs 21 of the lid are clamped below the compound curl 12 of the pail body exactly as described in GB-A-2189229.
  • Figure 3 shows the lid 14 clamped in place on the top rim of the pail body 10.
  • the compound curl 12 tends to tighten the seal at the rim, as described in GB-A-2189229.
  • Any increase in pressure within the pail which is sufficient to cause the lid 14 to become domed, tends to bend the planar region 15 and straighten out at least some of the corrugations 16 to a shape which approximates to that of a dome with the inclined portion 17 becoming a part of the dome shape without significant distortion or rupture of the metal.
  • the domed shape is shown schematically at 30 in Figures 4 and 5.
  • FIG. 4 and 5 there is shown the lid 14 and top rim portion of the pail body after it has been subjected to an internal test pressure of 1.2 bar and dropped from a height of 1.8 metres on to its top rim.
  • the lid 14 has assumed a domed shape similar to that used on pressure vessels, which domed shape includes the vertical wall 20, the stiffening fold 19, the inclined portion 17, the corrugations 16 and the Vietnamesewhile planar region 15, and from Figure 5 that this has an indicated height of H which, in the case of one pail of 20 litres capacity tested, was some 70 mm. This doming has occurred without rupture of the metal of the lid, and the seal has remained substantially intact.
  • the gasket 23 is more likely to be blown out before the metal of the lid ruptures. This is not the case with conventional lids where the metal ruptures in regions 19 and 22 at significantly lower internal pressures and when dropped from much lower heights than 1.8 metres.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Closures For Containers (AREA)

Claims (7)

  1. Couvercle métallique (14) destiné à être fixé au rebord (12) du corps (10) d'un seau, le couvercle (14) comportant une région centrale plane (15), une pluralité d'ondulations concentriques (16) entourant la région centrale et un élément de paroi cylindrique montant (20), dont l'extrémité supérieure s'étend vers l'extérieur, puis vers le bas et comporte des pattes (21) au niveau de sa périphérie la plus extérieure, caractérisé en ce qu'il est prévu une partie inclinée (17), qui s'étend dans une direction qui d'une manière générale part du plan de ladite région plane (15) et dans une direction qui, lorsque le couvercle (14) est fixé au corps (10) du seau, est dirigé vers l'intérieur du corps du seau, tandis qu'un repli de renfort (19) situé sur le pourtour de la circonférence extérieure de la partie inclinée (17) raccorde le corps du seau à l'élément de paroi cylindrique montant (20), et en ce que la forme de la partie inclinée (17) se rapproche d'une partie de dôme (30), qui serait formée par le couvercle (14), si les ondulations (14) et la région plane (15) étaient bombées sans étirage important du métal du couvercle (14).
  2. Couvercle selon la revendication 1, caractérisé en ce que la partie inclinée (17) est tronconique.
  3. Couvercle selon la revendication 1, caractérisé en ce que la partie inclinée (17) possède la forme d'une partie de sphère.
  4. Seau comportant un corps cylindrique (10) fermé à une extrémité par une paroi de fond (13) et à son autre extrémité par un couvercle fixé à un bord enroulé composite (12), caractérisé en ce que le couvercle est tel que revendiqué dans l'une quelconque des revendications 1 à 3.
  5. Seau selon la revendication 4, caractérisé en ce que lors de l'application d'une pression suffisante dans le seau, le couvercle (14) prend la forme d'un dôme qui inclut une tôle métallique provenant de l'élément de paroi (20), un repli de renfort (19), une partie inclinée (17), des ondulations (16) et une région auparavant plane (15).
  6. Seau selon la revendication 5, caractérisé en ce qu'il possède une capacité de 20 litres et que la hauteur (H) du couvercle en forme de dôme après déformation est égale à environ 70 mm.
  7. Seau selon la revendication 5 ou 6, caractérisé en ce que la région plane (15) est située dans un plan (18) perpendiculaire à l'axe du corps (10) du seau et au-dessous de la partie la plus basse du bord enroulé composite (12) formé sur le rebord supérieur du corps (10).
EP92304118A 1991-05-07 1992-05-07 Couvercle pour un seau Expired - Lifetime EP0512832B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB9109820 1991-05-07
GB919109820A GB9109820D0 (en) 1991-05-07 1991-05-07 Lid for a pail

Publications (3)

Publication Number Publication Date
EP0512832A2 EP0512832A2 (fr) 1992-11-11
EP0512832A3 EP0512832A3 (en) 1993-03-03
EP0512832B1 true EP0512832B1 (fr) 1994-04-13

Family

ID=10694550

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92304118A Expired - Lifetime EP0512832B1 (fr) 1991-05-07 1992-05-07 Couvercle pour un seau

Country Status (4)

Country Link
EP (1) EP0512832B1 (fr)
DE (1) DE69200102T2 (fr)
DK (1) DK0512832T3 (fr)
GB (1) GB9109820D0 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5337910A (en) * 1992-12-01 1994-08-16 Dart Industries Inc. Food processing container
DE102006005058A1 (de) * 2006-02-03 2007-08-16 IMPRESS Metal Packaging S.A., Crosmières Expansionsfähiger Deckel für eine Nahrungsmittel-Dose
JP6499439B2 (ja) * 2014-12-24 2019-04-10 株式会社長尾製缶所 オープンペール缶用ラグ天板
JP7835749B2 (ja) * 2020-10-30 2026-03-25 シー ― ループ パッケージング スウェーデン アクチエボラグ リサイクル可能性を高めたパターン付き缶エンド・モジュラ分配システム
CN116761761A (zh) * 2020-10-30 2023-09-15 C环包装瑞典股份公司 具有增强型可回收性的花样罐末端模块化分配系统
USD1068472S1 (en) 2023-05-01 2025-04-01 C-Loop Packaging Sweden Ab Can end

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3883535T2 (de) * 1987-12-24 1994-01-20 Blagden Ind Plc Deckel und schloss für einen eimer.
FR2651211B1 (fr) * 1989-08-29 1991-11-22 Cmb Packaging Sa Couvercle metallique pour recipient etanche.

Also Published As

Publication number Publication date
DE69200102D1 (de) 1994-05-19
GB9109820D0 (en) 1991-06-26
DK0512832T3 (da) 1994-08-15
EP0512832A3 (en) 1993-03-03
EP0512832A2 (fr) 1992-11-11
DE69200102T2 (de) 1994-10-13

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