EP0480854B1 - Corps de boîte de conserves et boîte fermée correspondante à sertissage amelioré - Google Patents

Corps de boîte de conserves et boîte fermée correspondante à sertissage amelioré Download PDF

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Publication number
EP0480854B1
EP0480854B1 EP91420357A EP91420357A EP0480854B1 EP 0480854 B1 EP0480854 B1 EP 0480854B1 EP 91420357 A EP91420357 A EP 91420357A EP 91420357 A EP91420357 A EP 91420357A EP 0480854 B1 EP0480854 B1 EP 0480854B1
Authority
EP
European Patent Office
Prior art keywords
portions
box
crimping
upper portion
conserves
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
EP91420357A
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German (de)
English (en)
French (fr)
Other versions
EP0480854A1 (fr
Inventor
Bernard Le Fur
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.)
Pechiney Emballage Alimentaire
Original Assignee
Pechiney Emballage Alimentaire
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Filing date
Publication date
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First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=9401239&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0480854(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Pechiney Emballage Alimentaire filed Critical Pechiney Emballage Alimentaire
Publication of EP0480854A1 publication Critical patent/EP0480854A1/fr
Application granted granted Critical
Publication of EP0480854B1 publication Critical patent/EP0480854B1/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
    • B65D7/00—Containers having bodies formed by interconnecting or uniting two or more rigid, or substantially rigid, components made wholly or mainly of metal
    • B65D7/12—Containers having bodies formed by interconnecting or uniting two or more rigid, or substantially rigid, components made wholly or mainly of metal characterised by wall construction or by connections between walls
    • B65D7/34—Containers having bodies formed by interconnecting or uniting two or more rigid, or substantially rigid, components made wholly or mainly of metal characterised by wall construction or by connections between walls with permanent connections between walls
    • B65D7/36—Containers having bodies formed by interconnecting or uniting two or more rigid, or substantially rigid, components made wholly or mainly of metal characterised by wall construction or by connections between walls with permanent connections between walls formed by rolling, or by rolling and pressing
    • 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
    • B65D1/34—Trays or like shallow containers
    • 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
    • B65D21/00—Nestable, stackable or joinable containers; Containers of variable capacity
    • B65D21/02—Containers specially shaped, or provided with fittings or attachments, to facilitate nesting, stacking, or joining together
    • B65D21/0233—Nestable containers

Definitions

  • the invention relates to the field of metal or plastic-based cans closed by crimping, and more precisely those which have a support shoulder serving for example for adjusting the stacking with casing of identical box bodies, or when the closed box is pressed on the periphery of a positioning orifice.
  • a body of a can of aluminum alloy of the rectangular type with rounded angles that is to say of which the open upper end, by horizontal convention, has a contour which has four radiated portions separated by short sides and long straight sides.
  • This box body has a side wall above its bottom which comprises, from this bottom to said upper end, a lower portion or slightly oblique skirt surmounted by a peripheral shoulder overhanging this skirt and serving to adjust the stacking with casing of successive box bodies so that there is no jamming during unstacking, then a vertical upper portion extending the outside of the shoulder, this upper portion ending at the open upper end and at an edge of horizontal peripheral crimping surrounding the opening of this end.
  • a cover having an end edge to be crimped slightly projecting from the crimping edge of the body and slightly folded down to facilitate the establishment and crimping.
  • This cover has a central portion which fits into the opening of the box body.
  • Crimping overlap produces an overlap with contact of the crimping edges of the cover and the box, this overlap is called “crimping overlap” and ensures sealing. It has been found that with such bodies one often obtains insufficient “crimping overlaps", and therefore risks of leakage, along the long rectilinear sides and more particularly towards the middle of these long sides, while the overlaps were satisfactory. to the right radiated portions. The plaintiff sought to remove these defects and the corresponding risks of leakage.
  • the subject of the invention is a typically metallic can body comprising a bottom, a side wall and a horizontal open upper end, the opening of said end having a contour which has at least two portions of small radius, said portions being separated by rectilinear or large radius portions, said side wall comprising, from the bottom to said upper end, a lower portion then at least one bearing shoulder of said body overhanging said lower portion, then an upper portion extending the exterior of said shoulder and a crimping edge surrounding said opening of said upper end, as is already known from the prior art presented (see US-A-3221692) in which the bearing shoulder is peripheral and unique.
  • said side wall comprises, to the right of each of said portions of small radius, a support shoulder, and, at least to the right of each said straight portion or of large radius of length greater than 20 mm, a surface oblique located at each said shoulder and making an angle with the vertical greater than the angle made by said lower portion with this vertical and less than 40 °, this oblique surface connecting said lower portion to said upper portion, so as to ensure the regularity of its crimping with a cover while retaining possibilities of support of said body.
  • These oblique surfaces are typically located in the upper third of the box body, and their inclination relative to the vertical preferably exceeds that of the lower portions by at least 8 °.
  • Each oblique surface is inclined by less than 40 ° with respect to the vertical, so as to minimize the risks of deformation during crimping. Given the offset between upper and lower portions, the optimal tilt angle varies in practice between 10 and 30 °.
  • Each said oblique surface preferably extends to the right of the ends of the portions of small radius framing the rectilinear or large radius portion dominating said oblique surface or even less than 10 mm from each of said ends, which means that 'it then stops either at the beginning of the rounded portions which surround it or a little before.
  • each oblique surface joins this upper portion at the bottom or end. lower of this casing or less than 1 mm lower so as to minimize the possibilities of deformation during crimping, these being influenced by the inclination of the oblique surface and by the height of the upper wall not held by the casing of the cover .
  • the overhanging shoulders situated in line with the portions of small radius in the case of the invention are sufficient to limit and adjust this nesting so as to avoid unstacking difficulties.
  • the invention also relates to a closed metal can, obtainable from the previous can body, said can comprising such a body and a cover crimped on an upper portion of said body, said upper portion having a crimped horizontal outline having at at least two portions of small radius, said portions being separated by straight or large radius portions and dominating at least one shoulder which overhangs a lower portion of said body.
  • this box body has such a shoulder to the right of each of said portions of small radius and, or less to the right of each said straight portion or of large radius of length greater than 20 mm, an oblique surface located at the level of each said shoulder and making an angle with the vertical greater than the angle made by said lower portion with this vertical and less than 40 °, this oblique surface connecting said lower portion to said upper portion, and probes crimped contour has an overlap of constant crimping better than 0.2 mm.
  • Each said oblique surface is preferably inclined from 10 to 30 ° relative to the vertical.
  • each said oblique surface joins this upper portion at the lower end of the fitted portion of said cover or less than 1 mm below.
  • the box body and the cover are typically made of aluminum or alloy or tinplate and of thickness between 0.15 and 0.30 mm, and even more typically between 0.17 and 0.26 mm.
  • the metallic designation also applies to metallic bodies coated with plastic, the metal giving most of the mechanical resistance.
  • the invention also applies to rigid plastic bodies having a support shoulder and a crimped metal cover.
  • the closed can is also typically a box of the rectangular type with rounded angles, the large rectilinear portions of its outline being 30 to 100 mm long. It can also be for example an oblong box.
  • the manufacturing modification corresponding to the invention is particularly simple.
  • Figure 1 shows the side walls of two box bodies outside the invention in a stacked position, in an axial half-section.
  • FIG. 2 represents a box outside the invention in the crimping position.
  • Figures 3 and 4 show the profile of this box after the first crimping pass, respectively in the middle of a long side and in a radiated part.
  • FIG. 5 represents the side walls of two bodies of boxes according to the invention in the middle of a long side, the side walls of a neighboring radiated part being shown in broken lines, in two axial half-sections.
  • Figure 6 shows a tin can according to the invention, in half-elevation.
  • Figure 1 shows the profile of the side wall 1 of two identical box bodies 2, the fitting of these two bodies 2 and the adaptation of a cover 3 on one of these bodies 2 before crimping.
  • Each body 2 comprises, above its bottom 4, a skirt or lower portion 5 here slightly inclined towards the vertical direction or direction of the axis 6 of the box body 2, then a shoulder 7 overhanging the skirt 5, then a upper portion 8 here vertical, then an outer rim or crimping edge 9 surrounding the opening 10 located at the upper end of the portion 8.
  • the shoulders 7 serve to limit and adjust the nesting of the bodies box, so that unstacking on the machine is easy.
  • the bodies 2 and the cover 3 are made of aluminum alloy AISI 5052, or about 2.5% Mg + 0.25% Cr, 0.25 mm thick and in the semi-hard state.
  • Figure 2 shows a rectangular body 2 with rounded angles and a cover 3 in position for crimping, the first pass being made with two rotating rollers 15 rotating around the body 2 and the cover 3 approaching the axis 6 of the body 2.
  • This first pass produces a pinching and tilting of the crimping edges 9 and 12 + 13.
  • the result after tightening pass differs in the middle of a large side and in the radiated parts: the differences in "crimping overlap" are already present before tightening and they are shown diagrammatically in Figures 3 (within 10 mm from the middle of a large side) and 4 (in a radiated part).
  • Body 2 has an opening 10 of 104x59.8 mm with radiated corner parts of radius 20 mm.
  • the interpretation of the poor result R1 is that the shoulder 7 is pushed down and deforms under the effect of a vertical component of the support of the upper surface 16 of the groove 17 of the roller (s) 15, as shown in Figure 3, the portion of the edge 9 available for clamping against the edges 12 and 13 of the cover being thereby shortened.
  • the bending of the radiated parts makes them more difficult to deform, it is observed in particular that the shoulder 7 retains its original shape there (FIG. 4), the satisfactory covering R2 being thus maintained.
  • FIG. 5 shows the side walls of two box bodies 20 according to the invention, identical to bodies 2 with the exception of the following changes: in the rectilinear portions 25 60 mm long (FIG. 6), and exceeding them by 3 mm each of their ends or connections 230 with the adjacent portions of small radius 23 (radius of 20 mm), an oblique wall portion 18 has been made.
  • This portion 18 (FIGS. 5 and 6) is inclined to the vertical 6 according to a angle 19 of 20 °, its lower end 180 is located at the lower connection 21 of the shoulders 7 with the skirt or lower portion 5, and its upper end 22 at the bottom 14 of the nested portion of the cover 3.
  • the shoulder 7 is kept in the radiated parts, the 4 small shoulders 7 sufficient to adjust the nesting of the box bodies 20.
  • the crimping was carried out as described, it gave for the box closed 200 (fig. 6) a crimped bead 24 of constant height 2.8 mm.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Ceramic Engineering (AREA)
  • Rigid Containers With Two Or More Constituent Elements (AREA)
  • Stackable Containers (AREA)
  • Closures For Containers (AREA)
  • Packages (AREA)
EP91420357A 1990-10-10 1991-10-09 Corps de boîte de conserves et boîte fermée correspondante à sertissage amelioré Expired - Lifetime EP0480854B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9012717 1990-10-10
FR9012717A FR2667845B1 (fr) 1990-10-10 1990-10-10 Corps de boite de conserves et boite fermee correspondante a sertissage ameliore.

Publications (2)

Publication Number Publication Date
EP0480854A1 EP0480854A1 (fr) 1992-04-15
EP0480854B1 true EP0480854B1 (fr) 1993-12-01

Family

ID=9401239

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91420357A Expired - Lifetime EP0480854B1 (fr) 1990-10-10 1991-10-09 Corps de boîte de conserves et boîte fermée correspondante à sertissage amelioré

Country Status (6)

Country Link
EP (1) EP0480854B1 (no)
DE (1) DE69100716T2 (no)
DK (1) DK0480854T3 (no)
FR (1) FR2667845B1 (no)
NO (1) NO305310B1 (no)
PT (1) PT8840U (no)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
HU223515B1 (hu) * 1995-09-29 2004-08-30 Impress Metal Packaging Gmbh. & Co. Ohg Tárolótartály-test
FR2749567B1 (fr) * 1996-06-07 1998-07-24 Nord Est Dev Barquette destinee a recevoir un materiau absorbant les exsudats de produits alimentaires contenus dans la barquette
DK173463B1 (da) * 1999-07-16 2000-11-27 Glud & Marstrand As Fødevarebeholder
RU2164887C1 (ru) * 2000-03-24 2001-04-10 Общество с ограниченной ответственностью "Водолей 2001" Банка для продуктов и способ ее изготовления

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3221692A (en) * 1959-10-29 1965-12-07 Mayer & Co Inc O Method of forming a package
US3233812A (en) * 1964-04-07 1966-02-08 Diamond Int Corp Molded pulp container
GB1456008A (en) * 1973-05-15 1976-11-17 Metal Box Co Ltd Containers
DE2433757A1 (de) * 1974-07-13 1976-05-20 Wagner Fa Wilhelm Schalenfoermiger behaelter aus aluminiumfolie
US4366696A (en) * 1980-12-24 1983-01-04 Western Can Company Nestable can method of manufacture

Also Published As

Publication number Publication date
FR2667845B1 (fr) 1994-05-27
EP0480854A1 (fr) 1992-04-15
NO913953L (no) 1992-04-13
DE69100716D1 (de) 1994-01-13
DE69100716T2 (de) 1994-04-14
PT8840T (pt) 1994-01-31
FR2667845A1 (fr) 1992-04-17
PT8840U (pt) 1996-02-29
DK0480854T3 (da) 1994-01-17
NO305310B1 (no) 1999-05-10
NO913953D0 (no) 1991-10-09

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