EP0360844B1 - Couvercle et fermeture de seau - Google Patents

Couvercle et fermeture de seau Download PDF

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Publication number
EP0360844B1
EP0360844B1 EP89901088A EP89901088A EP0360844B1 EP 0360844 B1 EP0360844 B1 EP 0360844B1 EP 89901088 A EP89901088 A EP 89901088A EP 89901088 A EP89901088 A EP 89901088A EP 0360844 B1 EP0360844 B1 EP 0360844B1
Authority
EP
European Patent Office
Prior art keywords
lid
pail
beads
bead
offset
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
EP89901088A
Other languages
German (de)
English (en)
Other versions
EP0360844A1 (fr
EP0360844A4 (en
Inventor
Jean-Pierre Blagden Industries Plc Van Laere
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.)
Rheem Australia Pty Ltd
BLAGDEN INDUSTRIES PLC
Original Assignee
Rheem Australia Pty Ltd
BLAGDEN INDUSTRIES PLC
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 Rheem Australia Pty Ltd, BLAGDEN INDUSTRIES PLC filed Critical Rheem Australia Pty Ltd
Priority to AT89901088T priority Critical patent/ATE93470T1/de
Publication of EP0360844A1 publication Critical patent/EP0360844A1/fr
Publication of EP0360844A4 publication Critical patent/EP0360844A4/en
Application granted granted Critical
Publication of EP0360844B1 publication Critical patent/EP0360844B1/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
    • B65D43/00—Lids or covers for rigid or semi-rigid containers
    • B65D43/02—Removable lids or covers
    • B65D43/0202—Removable lids or covers without integral tamper element
    • B65D43/0233—Removable lids or covers without integral tamper element secured by rolling or other plastic deformation
    • 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
    • B65D2543/00—Lids or covers essentially for box-like containers
    • B65D2543/00009—Details of lids or covers for rigid or semi-rigid containers
    • B65D2543/00018—Overall construction of the lid
    • B65D2543/00259—Materials used
    • B65D2543/00277—Metal
    • 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
    • B65D2543/00—Lids or covers essentially for box-like containers
    • B65D2543/00009—Details of lids or covers for rigid or semi-rigid containers
    • B65D2543/00342—Central part of the lid
    • B65D2543/0037—Flexible or deformable
    • 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
    • B65D2543/00—Lids or covers essentially for box-like containers
    • B65D2543/00009—Details of lids or covers for rigid or semi-rigid containers
    • B65D2543/00342—Central part of the lid
    • B65D2543/00398—Reinforcing ribs in the central part of the closure
    • B65D2543/00416—Reinforcing ribs in the central part of the closure circular
    • 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
    • B65D2543/00—Lids or covers essentially for box-like containers
    • B65D2543/00009—Details of lids or covers for rigid or semi-rigid containers
    • B65D2543/00444—Contact between the container and the lid
    • B65D2543/00481—Contact between the container and the lid on the inside or the outside of the container
    • B65D2543/0049—Contact between the container and the lid on the inside or the outside of the container on the inside, or a part turned to the inside of the mouth of the container
    • B65D2543/00509—Cup
    • 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
    • B65D2543/00—Lids or covers essentially for box-like containers
    • B65D2543/00009—Details of lids or covers for rigid or semi-rigid containers
    • B65D2543/00444—Contact between the container and the lid
    • B65D2543/00481—Contact between the container and the lid on the inside or the outside of the container
    • B65D2543/00537—Contact between the container and the lid on the inside or the outside of the container on the outside, or a part turned to the outside of the mouth of the container
    • 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
    • B65D2543/00—Lids or covers essentially for box-like containers
    • B65D2543/00009—Details of lids or covers for rigid or semi-rigid containers
    • B65D2543/00444—Contact between the container and the lid
    • B65D2543/00481—Contact between the container and the lid on the inside or the outside of the container
    • B65D2543/00555—Contact between the container and the lid on the inside or the outside of the container on both the inside and the outside
    • 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
    • B65D2543/00—Lids or covers essentially for box-like containers
    • B65D2543/00009—Details of lids or covers for rigid or semi-rigid containers
    • B65D2543/00953—Sealing means
    • B65D2543/00962—Sealing means inserted
    • B65D2543/00972—Collars or rings

Definitions

  • the invention relates to sheet steel or tinplate pails of the full open head type and lids of the same material, of the multi-lug type.
  • the invention concerns a lid and pail combination providing improved resistance to leakage when subjected to internal pressure.
  • US-A-2 205 685 discloses a lid for use in a container having a false wire extending around the upper end thereof, the closure comprising a sheet metal stamping including a central disc-like portion substantially undeformed, an inner bead pressed upwardly from said portion and an outer bead pressed downwardly below said portion
  • the lid according to US-A-2 205 685 comprises thus reversely displaced beads; moreover, it is combined with a common false-wire-edged pail.
  • US-A-2 205 685 is used to define the preamble of claim 1 of the present application
  • the need has been specified in certain countries to require full open head pails with lids used for the transport of dangerous goods contents to be capable of withstanding internally applied hydraulic pressure (in a test simulating abnormal service conditions), the pail and lid interconnection being regarded as satisfactory for the carriage of dangerous liquiform goods if it is capable of withstanding a pressure of 100 kPa for five minutes, without leaking.
  • Such a test is specified by certain national regulations for the packaging and transport of dangerous goods by road, rail or sea. At such test pressures the pail ends permanently distort to a very considerable degree.
  • the present invention has been found particularly applicable to open head type pails of tinplate or mild steel having lug type lids of the same material in which the following particulars obtain: Pail Capacity 15 to 25 litre Pail Internal diameter (nominal) 286mm Pail height Dependent on capacity Pail outside diameter (approx) 300mm Thickness of pail sheet From 0.35 to 0.5 mm Thickness of lid sheet From 0.43 to 0.5 mm
  • the invention consists of a lid for use in an open head pail and lid assembly, said lid being of tinplate or sheet mild steel, the lid having a gasketted peripheral groove to be complementarily sealed to a peripheral rim of the pail by the inward and upward deformation of lugs around the peripheral of the lid around the curled rim of the pail; a generally planar central region and a drawn periphery region where the gasketted groove is offset from the plane of the central region; the central region of the lid is provided with a plurality of upwardly and outwardly deformed beads each having a cross-sectional profile asymmetrically offset wherein the maximum upward deformation or crest of each bead is radially outwardly offset from a radial centre line of that bead (such a lid is disclosed in US-A-2 205 685), characterised in that the lid is of thickness in the range of 0.43 to 0.5mm and in that the amount of offset of the central region of the lid from a plane containing the most distant extremity
  • the number of beads provided is two to four. Preferably the number of beads provided is three. Preferably the beads are circular. Preferably the beads are concentric. Preferably the beads are circumferentially continuous. Preferably the bead cross-section comprises two straight lines joined by a radius wherein the straight lines are of unequal length and the radius is not more than five times the thickness of the tinplate or steel sheet.
  • the radially more outward line intersects the planar portion of the lid at an angle in the range of about 80 to 90 degrees
  • Another object of the invention is the combination of a pail and of a lid as described hereinabove wherein the lid is clenched to a complementary rim of a tinplate pail in which the rim comprises a curl the tip of which has been formed by a rotation through an angle of at least 450° and in which an inward and upward clenching of the lugs results in a tightly rolled curl configuration.
  • the circular pail lid (10) comprises twenty lugs (11) around the periphery of the lid, downwardly depending from the bottom edge (12) of a downwardly depending peripheral skirt (13).
  • a gasket groove (14) is defined by a circumferentially extending radiused groove which in use occupies to a suitable depth by a cellular compressible gasket (not shown) for sealing against a complementary curled rim of a pail (see Figure 2).
  • the plane (14) defines the axially uppermost portion of the lid. Radially inwardly of the highest point (15) a downwardly depending draw (16) of the lid extends further downwardly than the skirt(13), before blending via a radius (17) into a central lid portion (18) bounded radially outwardly by radius (17).
  • Central lid portion (18) is generally planar except that three beads (19), (20), (21) are formed so as to project upwardly from the flat central portion (18).
  • Each bead is preferably identical in cross-section and, described with reference to bead (19), comprises in cross-section an approximately vertical straight line (22), a second straight line (24), both lines being joined by a radius (23) which is preferably in the range three to five times the metal thickness (the metal thickness being 0.43 to 0.5 mm preferably given that the outside diameter of the lid is approximately 300mm).
  • Line (24) is inclined at an angle (25) to the horizontal.
  • a preferable value of angle (25) has been found to be in the range 20 to 30 degrees
  • Preferably the best results are achieved with three beads as illustrated although it is believed that two may be found sufficient and any more than four would consume unnecessarily large amounts of the sheet metal lid, requiring a larger blank diameter to ensure adequacy of important dimensions such as the length of the outer skirt (12) and lugs (11).
  • the radius (23) defines a crest of bead (19) and it is preferred if the height of the crest measured from plane (18) and the depth of draw from plane (14) to plane (18) are in the ratio of 4.5 to 18.5 or about 1 to 4 or 25%. It is preferred if the depth of draw is at least 5% of the outside diameter of the lid and is optimally in the range 5 to 7%.
  • the pail body (32) with its curl (33) is closed by a lug-cover lid having a central portion (18) having a deep-drawn wall (16) rolled over to a rim (36) in which is positioned a gasket (37).
  • the rim extends downwardly in lugs (11) which are adapted to be clenched under the curl of the pail to secure the lid on the pail as will now be described.
  • the lugs (11) extend downwardly from the rim (36) such that the lid may be easily placed in firmly fitting relationship with the pail.
  • the clenching of the lugs inwardly and upwardly to form the re-entrant angle (40) is beneficial in retaining the cover in place on the pail during hydraulic pressure testing. It is a feature of the invention that the curl formed by rotation of the rim of the pail through more than 450° enables a much higher clenching force to be applied to the lug without collapsing the curl on the pail, and therefore allows the re-entrant clenching of the lug up and between the curl and the adjacent cylindrical wall of the pail. The clenching force applied by the lid further forms the curl such that an exceptionally effective assembly results from this combination of pail and lid.
  • the beads are circular and concentric.
  • suitable diameters for the crests of beads (19), (20) and (21) are approximately 270, 240 and 216 mm respectively and in any event it is preferred if the beads lie within the radially outermost 60% of the diameter of the central portion of the lid.
  • a lid of outside diameter 300 mm when fitted to an open head pail using the method of attachment shown in Figure 2 and where the lid is made of tinplate 0.5 mm thick and the pail is made of tinplate 0.38 mm thick in both the body and bottom, then the pail is capable of withstanding an internal pressure of 100 kPa for at least five minutes.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Closures For Containers (AREA)
  • Pressure Vessels And Lids Thereof (AREA)
  • Gasket Seals (AREA)
  • Centrifugal Separators (AREA)

Claims (9)

  1. Couvercle (10) à utiliser dans un ensemble comprenant un seau à ouverture totale (32) et un couvercle (10), ce couvercle (10) étant en fer-blanc ou en tôle d'acier doux
    et présentant une gorge périphérique (14) garnie d'un joint afin d'être adaptée de manière étanche et complémentaire sur un bord périphérique (33) du seau (32) par déformation vers l'intérieur et vers le haut, autour du bord roulé (33) du seau, de pattes (11) situées tout autour de la périphérie du couvercle (10); une région centrale généralement plane (18) et une région périphérique emboutie dans laquelle la gorge (14) garnie d'un joint est décalée du plan de la région centrale (18), la région centrale (18) du couvercle (10) étant pourvue de plusieurs nervures déformées vers le haut et vers l'extérieur (19, 20, 21) et ayant chacune un profil en coupe transversale décalé asymétriquement, la déformation vers le haut maximale ou le sommet de chaque nervure (19, 20, 21) étant décalé radialement vers l'extérieur d'un axe central radial de cette nervure (19, 20, 21), caractérisé en ce que le couvercle (10) a une épaisseur comprise entre 0,43 et 0,5 mm et en ce que le degré de décalage de la région centrale (18) du couvercle (10) à partir d'un plan contenant l'extrémité la plus distante de la gorge (14) garnie d'un joint, c'est-à-dire la profondeur d'emboutissage, est de 5 à 7% du diamètre extérieur du couvercle (10) et le degré de décalage de la région centrale plane (10) du couvercle par rapport au plan contenant le sommet des nervures (19, 20, 21) est approximativement de 23 à 27% de la profondeur d'emboutissage.
  2. Couvercle (10) suivant la revendication 1, dans lequel le nombre de nervures (19, 20, 21) est de deux à quatre.
  3. Couvercle (10) suivant la revendication 2, dans lequel le nombre de nervures (19, 20, 21) est de trois.
  4. Couvercle (10) suivant l'une quelconque des revendications précédentes, dans lequel les nervures (19, 20, 21) sont circulaires.
  5. Couvercle (10) suivant l'une quelconque des revendications précédentes, dans lequel les nervures (19, 20, 21) sont concentriques.
  6. Couvercle (10) suivant l'une quelconque des revendications précédentes, dans lequel les nervures (19, 20, 21) sont circonférentiellement continues.
  7. Couvercle (10) suivant l'une quelconque des revendications précédentes, dans lequel la section transversale des nervures (19, 20, 21) comprend deux lignes droites (22, 24) reliées par un arrondi (23), les lignes droites (22, 24) étant de longueurs inégales et l'arrondi (23) ne dépassant pas cinq fois l'épaisseur de la tôle.
  8. Couvercle (10) suivant la revendication (7), dans lequel les deux lignes droites (22, 24) délimitant la section transversale des nervures (19, 20, 21) comprennent une ligne située radialement plus vers l'extérieur qui coupe la partie plane (18) du couvercle (10) sous un angle compris entre environ 80 et 90°.
  9. Ensemble combiné d'un seau (32) et d'un couvercle (10), caractérisé en ce qu'un couvercle (10) suivant l'une quelconque des revendications précédentes est assujetti à un bord complémentaire (33) d'un seau en fer-blanc (32) dans lequel le bord (33) est un bord roulé (33) dont la partie supérieure a été formée par une rotation d'un angle d'au moins 450° et dans lequel un rabattement des pattes (11) vers l'intérieur et vers le haut produit une configuration de bord roulé bien serrée.
EP89901088A 1987-12-24 1988-12-23 Couvercle et fermeture de seau Expired - Lifetime EP0360844B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT89901088T ATE93470T1 (de) 1987-12-24 1988-12-23 Deckel und schloss fuer einen eimer.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AUPI608487 1987-12-24
AU6084/87 1987-12-24

Publications (3)

Publication Number Publication Date
EP0360844A1 EP0360844A1 (fr) 1990-04-04
EP0360844A4 EP0360844A4 (en) 1991-03-20
EP0360844B1 true EP0360844B1 (fr) 1993-08-25

Family

ID=3772681

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89901088A Expired - Lifetime EP0360844B1 (fr) 1987-12-24 1988-12-23 Couvercle et fermeture de seau

Country Status (6)

Country Link
EP (1) EP0360844B1 (fr)
JP (1) JPH03503626A (fr)
AT (1) ATE93470T1 (fr)
AU (1) AU642849B2 (fr)
DE (1) DE3883535T2 (fr)
WO (1) WO1989005758A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9109820D0 (en) * 1991-05-07 1991-06-26 Courtaulds Coatings Holdings Lid for a pail
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
CN106800136A (zh) * 2017-02-28 2017-06-06 苏州华源控股股份有限公司 一种防伪花篮盖
JP2018062392A (ja) * 2018-01-24 2018-04-19 株式会社長尾製缶所 金属製オープンペール缶

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2205685A (en) * 1936-09-21 1940-06-25 Wheeling Steel Corp Container closure
GB550109A (en) * 1941-06-19 1942-12-23 Easycantop Ltd Improvements in or relating to cans or like containers
GB980669A (en) * 1963-07-26 1965-01-20 American Light Gage Drum Corp Improvements in shipping containers
FR1395914A (fr) * 1964-04-01 1965-04-16 Travail Mecanique De La Tole S Nouveau mode d'emballage de produits pratiquement incompressibles et enveloppement métallique appliqué à cette fin
LU66736A1 (fr) * 1972-12-21 1974-07-10
GB1588014A (en) * 1976-06-25 1981-04-15 Metal Box Co Ltd Container end wall
DE8208599U1 (de) * 1982-03-26 1982-06-16 Schmalbach-Lubeca Gmbh, 3300 Braunschweig Mit einem Eindrueckdeckel verschlossener Verpackungsbehaelter aus Blech

Also Published As

Publication number Publication date
DE3883535D1 (de) 1993-09-30
ATE93470T1 (de) 1993-09-15
DE3883535T2 (de) 1994-01-20
EP0360844A1 (fr) 1990-04-04
AU2903689A (en) 1989-07-19
WO1989005758A1 (fr) 1989-06-29
EP0360844A4 (en) 1991-03-20
JPH03503626A (ja) 1991-08-15
AU642849B2 (en) 1993-11-04

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