EP1851129B1 - Easy open container and method of sealing thereof - Google Patents

Easy open container and method of sealing thereof Download PDF

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Publication number
EP1851129B1
EP1851129B1 EP06707732.1A EP06707732A EP1851129B1 EP 1851129 B1 EP1851129 B1 EP 1851129B1 EP 06707732 A EP06707732 A EP 06707732A EP 1851129 B1 EP1851129 B1 EP 1851129B1
Authority
EP
European Patent Office
Prior art keywords
lid
wall
container
container body
easy open
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.)
Not-in-force
Application number
EP06707732.1A
Other languages
German (de)
French (fr)
Other versions
EP1851129A1 (en
EP1851129B8 (en
Inventor
Michel Philippe
Jean-Marc Richeux
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.)
Crown Packaging Technology Inc
Original Assignee
Crown Packaging Technology 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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=34938803&utm_source=***_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP1851129(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Crown Packaging Technology Inc filed Critical Crown Packaging Technology Inc
Priority to EP06707732.1A priority Critical patent/EP1851129B8/en
Publication of EP1851129A1 publication Critical patent/EP1851129A1/en
Publication of EP1851129B1 publication Critical patent/EP1851129B1/en
Application granted granted Critical
Publication of EP1851129B8 publication Critical patent/EP1851129B8/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • B65D17/42—Rigid or semi-rigid containers specially constructed to be opened by cutting or piercing, or by tearing of frangible members or portions with cutting, punching, or cutter accommodating means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B44—DECORATIVE ARTS
    • B44D—PAINTING OR ARTISTIC DRAWING, NOT OTHERWISE PROVIDED FOR; PRESERVING PAINTINGS; SURFACE TREATMENT TO OBTAIN SPECIAL ARTISTIC SURFACE EFFECTS OR FINISHES
    • B44D3/00—Accessories or implements for use in connection with painting or artistic drawing, not otherwise provided for; Methods or devices for colour determination, selection, or synthesis, e.g. use of colour tables
    • B44D3/12—Paint cans; Brush holders; Containers for storing residual paint
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B44—DECORATIVE ARTS
    • B44D—PAINTING OR ARTISTIC DRAWING, NOT OTHERWISE PROVIDED FOR; PRESERVING PAINTINGS; SURFACE TREATMENT TO OBTAIN SPECIAL ARTISTIC SURFACE EFFECTS OR FINISHES
    • B44D3/00—Accessories or implements for use in connection with painting or artistic drawing, not otherwise provided for; Methods or devices for colour determination, selection, or synthesis, e.g. use of colour tables
    • B44D3/12—Paint cans; Brush holders; Containers for storing residual paint
    • B44D3/127—Covers or lids for paint cans
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B7/00—Closing containers or receptacles after filling
    • B65B7/16—Closing semi-rigid or rigid containers or receptacles not deformed by, or not taking-up shape of, contents, e.g. boxes or cartons
    • B65B7/28—Closing semi-rigid or rigid containers or receptacles not deformed by, or not taking-up shape of, contents, e.g. boxes or cartons by applying separate preformed closures, e.g. lids, covers
    • B65B7/2842—Securing closures on 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
    • B65D17/00—Rigid or semi-rigid containers specially constructed to be opened by cutting or piercing, or by tearing of frangible members or portions
    • B65D17/28—Rigid or semi-rigid containers specially constructed to be opened by cutting or piercing, or by tearing of frangible members or portions at lines or points of weakness
    • 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

Definitions

  • This invention relates to an easy open container according to the preamble of claim 1 and to a method of sealing the easy open container of claim 1.
  • the container has a body with seamed or integral base, a metal ring which is seamed to the open end of the can body, and a press-on lid which can be opened by inserting a lever into a channel at the edge of the ring.
  • the press-on lid has a U-shaped channel for inserting the lever, and a flange, which extends radially outwardly from the channel.
  • a plastics ring is clipped over the raw edge of the lid and extends around an outwardly rolled circumferential edge flange of the can body when the lid is pressed down onto the can body.
  • an easy open container in accordance with the preamble of claim 1 is known from document CH 624 356 .
  • a method of sealing a container by forming complementary beads is furthermore known from document FR2387855 A1 .
  • an easy open container according to claim 1.
  • the plastics ring of the lid structure provides openability when the iid structure is fixed to a container, without the need for any tool. After tearing the lower ring profile, the lid structure is removable from the container, such that the container appears to the user to have only two parts.
  • the centre panel of the lid may be joined to the outer wall by a generally U-shaped channel. This prevents excessive intrusion of the lid structure into the headspace of the can body.
  • sealing compound may be provided around the lid annulus and adjacent the outer wall.
  • the line of weakening is tearable and defines a tamper evident strip or band.
  • the can body has an outward curl at the edge of the opening so that the ring engages this can body curl.
  • a method of sealing an easy open container according to claim 5 is provided.
  • the method may be used with a lid structure having a U-shaped channel so that an expandable tool may be inserted into the channel for applying radial force to the channel outer wall to form the beads.
  • Figure 1 is a perspective view from above of the plastics ring
  • Figure 2 is a perspective view from below of the plastics ring
  • Figure 3 is a side section of the plastics ring, through the cut in area 'C';
  • Figure 4 is a side section of the plastics ring, through the cut in area 'D';
  • Figures 5 is a schematic side view showing the plastics ring and metal lid assembly
  • Figures 6 to 9 are schematic side views showing the application of the lid structure onto a can body.
  • Figure 10 is a schematic side view of the closed container.
  • the plastics ring of figure 1 has an annular shoulder 2 and a skirt having an inner wall 3 and an outer wall 4.
  • a tab feature 5 on the outer wall is provided for gripping by a user when opening a container as is described in more detail below.
  • Lug 6 of the example is a fully circumferential lug for engaging a metal lid to form a lid structure and a lower profile 7 on the inner wall for engaging the container body.
  • Figure 2 is an underneath isometric view of the ring of figure 1 , showing cut regions 'A', 'B', 'C' and 'D'. In the side sections of figure 3 and/or 4, the annular shoulder 2, lug 6 and tab 5 can be clearly identified.
  • Lower profile 7 includes teeth 8 in uncut regions which assist in gripping the container body.
  • the cut in the 'C' area is indicated by reference 9 in figure 3 that of the 'D' area by reference 10 which extends from the tab 5 of figure 4 .
  • FIG. 5 shows the lid structure which combines the plastics ring 1 with a metal lid 20.
  • the lid 20 comprises a centre panel 21, inner and outer walls defining a channel 22, the outer wall 23 leading into an outwardly extending annulus 24, and terminating in a raw edge.
  • the plastics ring is clipped over the annulus 24 so the shoulder 2 covers annulus 24 and lug 6 covers the edge of the lid at 25.
  • a downwardly extending portion 41 of the tool 40 has a radially outwardly extending bead 42 which is moved into contact with the outer wall 23 by applying a radial expansion force. Downward pressure is maintained whilst the expansion force is applied to ensure correct positioning of the bead 42 against the outer wall 23.
  • the compression of the compound is maintained during the expansion. This compression is also maintained after the blocking of the lid in the body and partly by the plastic ring.
  • the combined forces are applied until complementary beads are formed in the lid wall 23 and can body wall 32, beneath the curl 31.
  • the tool 40 is then retracted radially, with downward pressure maintained ( figure 9 ) and tool 40 removed to leave the finished structure of figure 10 .

Landscapes

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

Description

    Technical field
  • This invention relates to an easy open container according to the preamble of claim 1 and to a method of sealing the easy open container of claim 1. In particular, but not exclusively it related to a lid structure for an easy open container for packaging liquids such as paint, or solids such as powders.
    • Background art
  • It is known to provide metal containers for packaging paint in which the container has a body with seamed or integral base, a metal ring which is seamed to the open end of the can body, and a press-on lid which can be opened by inserting a lever into a channel at the edge of the ring.
  • In an alternative design, the press-on lid has a U-shaped channel for inserting the lever, and a flange, which extends radially outwardly from the channel. A plastics ring is clipped over the raw edge of the lid and extends around an outwardly rolled circumferential edge flange of the can body when the lid is pressed down onto the can body.
  • Numerous arrangements of recess have been described but essentially all of these require the insertion of a tool to release an interlock between the lid and container body or ring. These designs rely on the lever opening principle and therefore require some form of tool in order to lever open the container. In some examples, the lever acts against a springy wall of the container, ring or lid so that the container is reclosable and there is minimal distortion of the container on opening.
  • Moreover, an easy open container in accordance with the preamble of claim 1 is known from document CH 624 356 . A method of sealing a container by forming complementary beads is furthermore known from document FR2387855 A1 .
    • Disclosure of the invention
  • According to the present invention, there is provided an easy open container according to claim 1.
  • In contrast with lever lids of the prior art, the plastics ring of the lid structure provides openability when the iid structure is fixed to a container, without the need for any tool. After tearing the lower ring profile, the lid structure is removable from the container, such that the container appears to the user to have only two parts.
  • The centre panel of the lid may be joined to the outer wall by a generally U-shaped channel. This prevents excessive intrusion of the lid structure into the headspace of the can body. Typically, sealing compound may be provided around the lid annulus and adjacent the outer wall.
  • The line of weakening is tearable and defines a tamper evident strip or band.
  • Typically, the can body has an outward curl at the edge of the opening so that the ring engages this can body curl.
    According to yet another aspect of the present invention, there is provided a method of sealing an easy open container according to claim 5.
  • Generally, the method may be used with a lid structure having a U-shaped channel so that an expandable tool may be inserted into the channel for applying radial force to the channel outer wall to form the beads.
    • Brief description of the drawings
  • Preferred embodiments of the invention will now be described, by way of example only, with reference to the drawings, in which:
  • Figure 1 is a perspective view from above of the plastics ring;
  • Figure 2 is a perspective view from below of the plastics ring;
  • Figure 3 is a side section of the plastics ring, through the cut in area 'C';
  • Figure 4 is a side section of the plastics ring, through the cut in area 'D';
  • Figures 5 is a schematic side view showing the plastics ring and metal lid assembly;
  • Figures 6 to 9 are schematic side views showing the application of the lid structure onto a can body; and
  • Figure 10 is a schematic side view of the closed container.
    • Mode(s) for carrying out the invention
  • The plastics ring of figure 1 has an annular shoulder 2 and a skirt having an inner wall 3 and an outer wall 4. A tab feature 5 on the outer wall is provided for gripping by a user when opening a container as is described in more detail below. Lug 6 of the example is a fully circumferential lug for engaging a metal lid to form a lid structure and a lower profile 7 on the inner wall for engaging the container body. Figure 2 is an underneath isometric view of the ring of figure 1, showing cut regions 'A', 'B', 'C' and 'D'. In the side sections of figure 3 and/or 4, the annular shoulder 2, lug 6 and tab 5 can be clearly identified. Lower profile 7 includes teeth 8 in uncut regions which assist in gripping the container body. The cut in the 'C' area is indicated by reference 9 in figure 3 that of the 'D' area by reference 10 which extends from the tab 5 of figure 4.
  • Figure 5 shows the lid structure which combines the plastics ring 1 with a metal lid 20. The lid 20 comprises a centre panel 21, inner and outer walls defining a channel 22, the outer wall 23 leading into an outwardly extending annulus 24, and terminating in a raw edge. As can be seen from the figure, the plastics ring is clipped over the annulus 24 so the shoulder 2 covers annulus 24 and lug 6 covers the edge of the lid at 25.
  • In figure 6, downward pressure is applied by tool 40 onto the shoulder 2 to force the lid structure downwardly onto a filled container 30. As the lower profile 7 contacts can body curl 31, the ring 1 pivots outwardly and then snaps around the curl into the position of figure 7. In figure 7, the lid structure is fixed to the can body 30, with sealing compound 26 between the annulus 24 of the metal lid and the top of curl 31. The lower profile 7 of the plastics ring has a shape complementary to that of the curl 31 and provides even contact around the curl.
  • The next stage of applying the lid structure provides further engagement between the outer wall 23 of channel 22. A downwardly extending portion 41 of the tool 40 has a radially outwardly extending bead 42 which is moved into contact with the outer wall 23 by applying a radial expansion force. Downward pressure is maintained whilst the expansion force is applied to ensure correct positioning of the bead 42 against the outer wall 23. By maintaining downward pressure during expansion, the compression of the compound is maintained during the expansion. This compression is also maintained after the blocking of the lid in the body and partly by the plastic ring. The combined forces are applied until complementary beads are formed in the lid wall 23 and can body wall 32, beneath the curl 31. The tool 40 is then retracted radially, with downward pressure maintained (figure 9) and tool 40 removed to leave the finished structure of figure 10.
  • The invention has been described above by way of example only and changes may be made to the method of forming the lid structure or of applying it to a container body without departing from the scope of the invention as defined by the claims.

Claims (6)

  1. An easy open container comprising: a metal can body having an open top with an outward curl at the edge of the opening and a manually removable lid structure comprising:
    a metal lid (20), having a centre panel (21) and an outer wall (23) terminating in a generally outwardly extending annulus (24); and
    a plastics ring (1) comprising an inwardly extending annular shoulder (2) and a peripheral skirt (4, 5) depending from the shoulder (2), the skirt (4, 5) having an inwardly extending lug (6) which clips against the edge of the lid with the shoulder (2) extending over the lid annulus (24), and a lower profile (7) which is complementary to the profile of the upper edge (31) of the container body (30) to which the lid structure is fixed
    characterised in that
    the outer wall of the metal lid (23) is seated within the container body and the outer wall of the metal lid (23) and the container body have complementary outwardly extending beads (32) and the lower profile (7) of the plastics ring (1) has a line of weakening along which at least part of the lower profile of the ring is manually tearable for opening the container.
  2. An easy open container according to claim 1, in which the centre panel (21) of the lid is joined to the outer wall (23) by a generally U-shaped channel.
  3. An easy open container according to claim 1 or claim 2, further including sealing compound (26) around the lid annulus and adjacent the outer wall.
  4. An easy open container according to any one of claims 1 to 3, in which the line of weakening defines a tamper evident strip or band.
  5. A method of sealing the easy open container of claim 1, the method comprising:
    placing the lid structure of claim 1 over the open end of the metal container body (30);
    applying downward pressure to force the lid and ring combination down onto the container body so that the lower profile (7) of the plastics ring (1) engages the upper edge of the container body (31) and an outer wall (23) of the lid is adjacent part of the container body side wall; and
    maintaining the downward pressure whilst applying a radially outward expansion force to deform the outer wall of the lid and the adjacent body wall into complementary beads (32).
  6. A method of sealing according to claim 5, wherein the lid structure has a U-shaped channel (22) and an expandable tool is inserted into the channel (22) for applying radial force to the channel outer wall (23) to form the beads (32).
EP06707732.1A 2005-02-24 2006-01-17 Easy open container and method of sealing thereof Not-in-force EP1851129B8 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP06707732.1A EP1851129B8 (en) 2005-02-24 2006-01-17 Easy open container and method of sealing thereof

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP05101399.3A EP1695918B1 (en) 2005-02-24 2005-02-24 Easy open container and lid structure
EP06707732.1A EP1851129B8 (en) 2005-02-24 2006-01-17 Easy open container and method of sealing thereof
PCT/EP2006/050239 WO2006089819A1 (en) 2005-02-24 2006-01-17 Easy open container and lid structure

Publications (3)

Publication Number Publication Date
EP1851129A1 EP1851129A1 (en) 2007-11-07
EP1851129B1 true EP1851129B1 (en) 2013-06-26
EP1851129B8 EP1851129B8 (en) 2013-08-21

Family

ID=34938803

Family Applications (2)

Application Number Title Priority Date Filing Date
EP05101399.3A Not-in-force EP1695918B1 (en) 2005-02-24 2005-02-24 Easy open container and lid structure
EP06707732.1A Not-in-force EP1851129B8 (en) 2005-02-24 2006-01-17 Easy open container and method of sealing thereof

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP05101399.3A Not-in-force EP1695918B1 (en) 2005-02-24 2005-02-24 Easy open container and lid structure

Country Status (8)

Country Link
US (2) US20080185383A1 (en)
EP (2) EP1695918B1 (en)
CA (1) CA2598855C (en)
DK (2) DK1695918T3 (en)
ES (1) ES2425868T3 (en)
MX (1) MX2007010389A (en)
RU (1) RU2403191C2 (en)
WO (1) WO2006089819A1 (en)

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Also Published As

Publication number Publication date
EP1851129A1 (en) 2007-11-07
DK1695918T3 (en) 2017-11-20
EP1851129B8 (en) 2013-08-21
CA2598855A1 (en) 2006-08-31
US20130240527A1 (en) 2013-09-19
RU2007135210A (en) 2009-03-27
EP1695918A1 (en) 2006-08-30
CA2598855C (en) 2013-04-23
RU2403191C2 (en) 2010-11-10
DK1851129T3 (en) 2013-09-30
ES2425868T3 (en) 2013-10-17
MX2007010389A (en) 2007-10-18
US20080185383A1 (en) 2008-08-07
EP1695918B1 (en) 2017-10-04
WO2006089819A1 (en) 2006-08-31

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