EP2330932B1 - Lid for tobacco container - Google Patents

Lid for tobacco container Download PDF

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Publication number
EP2330932B1
EP2330932B1 EP09798393.6A EP09798393A EP2330932B1 EP 2330932 B1 EP2330932 B1 EP 2330932B1 EP 09798393 A EP09798393 A EP 09798393A EP 2330932 B1 EP2330932 B1 EP 2330932B1
Authority
EP
European Patent Office
Prior art keywords
lid
segment
container
curl
sidewall
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
EP09798393.6A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2330932A4 (en
EP2330932A2 (en
Inventor
Gregg Hoffman
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.)
J L Clark Inc
Original Assignee
J L Clark 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 J L Clark Inc filed Critical J L Clark Inc
Publication of EP2330932A2 publication Critical patent/EP2330932A2/en
Publication of EP2330932A4 publication Critical patent/EP2330932A4/en
Application granted granted Critical
Publication of EP2330932B1 publication Critical patent/EP2330932B1/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
    • B65D15/00—Containers having bodies formed by interconnecting or uniting two or more rigid, or substantially rigid, sections made of different materials
    • B65D15/02—Containers having bodies formed by interconnecting or uniting two or more rigid, or substantially rigid, sections made of different materials of curved, or partially curved, cross-section, e.g. cans, drums
    • B65D15/04—Containers having bodies formed by interconnecting or uniting two or more rigid, or substantially rigid, sections made of different materials of curved, or partially curved, cross-section, e.g. cans, drums with curved, or partially curved, walls made by winding or bending paper
    • B65D15/06—Containers having bodies formed by interconnecting or uniting two or more rigid, or substantially rigid, sections made of different materials of curved, or partially curved, cross-section, e.g. cans, drums with curved, or partially curved, walls made by winding or bending paper with end walls made of metal
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D51/00—Making hollow objects
    • B21D51/16—Making hollow objects characterised by the use of the objects
    • B21D51/38—Making inlet or outlet arrangements of cans, tins, baths, bottles, or other vessels; Making can ends; Making closures
    • B21D51/44—Making closures, e.g. caps
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D51/00—Making hollow objects
    • B21D51/16—Making hollow objects characterised by the use of the objects
    • B21D51/52—Making hollow objects characterised by the use of the objects boxes, cigarette cases, or the like
    • 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
    • B65D15/00—Containers having bodies formed by interconnecting or uniting two or more rigid, or substantially rigid, sections made of different materials
    • B65D15/02—Containers having bodies formed by interconnecting or uniting two or more rigid, or substantially rigid, sections made of different materials of curved, or partially curved, cross-section, e.g. cans, drums
    • B65D15/16—Containers having bodies formed by interconnecting or uniting two or more rigid, or substantially rigid, sections made of different materials of curved, or partially curved, cross-section, e.g. cans, drums with curved, or partially curved, walls made of plastics material
    • B65D15/18—Containers having bodies formed by interconnecting or uniting two or more rigid, or substantially rigid, sections made of different materials of curved, or partially curved, cross-section, e.g. cans, drums with curved, or partially curved, walls made of plastics material with end walls made of 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
    • 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
    • B65D43/0204—Removable lids or covers without integral tamper element secured by snapping over beads or projections
    • B65D43/0212—Removable lids or covers without integral tamper element secured by snapping over beads or projections only on the outside, or a part turned to the outside, of the mouth
    • 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
    • B65D2543/00037—Disc closures
    • 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
    • B65D2543/00064—Shape of the outer periphery
    • B65D2543/00074—Shape of the outer periphery curved
    • B65D2543/00092—Shape of the outer periphery curved 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
    • B65D2543/00018—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
    • B65D2543/00444—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
    • B65D2543/00527—NO contact
    • 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
    • B65D2543/00592—Snapping means
    • B65D2543/00601—Snapping means on the container
    • B65D2543/00611—Profiles
    • B65D2543/00629—Massive bead
    • 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
    • B65D2543/00592—Snapping means
    • B65D2543/00601—Snapping means on the container
    • B65D2543/00675—Periphery concerned
    • B65D2543/00685—Totality
    • 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
    • B65D2543/00592—Snapping means
    • B65D2543/00712—Snapping means on the lid
    • B65D2543/00722—Profiles
    • B65D2543/0075—Rolled edge
    • 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
    • B65D2543/00592—Snapping means
    • B65D2543/00712—Snapping means on the lid
    • B65D2543/00787—Periphery concerned
    • B65D2543/00796—Totality

Definitions

  • This invention generally relates to lids for containers and, more particularly, to a lid for a tobacco container.
  • Loose tobacco and related tobacco products are typically packaged and sold in disc-shaped containers.
  • the containers comprise a metal lid seated upon either a metal, plastic or cardboard container bottom.
  • a band-type label is adhesively secured over the seam between the lid and container to securely fasten the lid and the container.
  • the band type label also typically will positively impact the freshness of the product.
  • the label also typically includes print, images, and information regarding the tobacco product for a potential customer.
  • the lid includes a relatively flat top cover portion and a surrounding sidewall.
  • the sidewall terminates in a cut edge.
  • a metal edge has the potential to be relatively sharp. If the sharp edges are not properly made smooth, a purchaser of the container may potentially risk suffering a laceration in one of their fingers when prying the lid from the container using the edges.
  • the interface between the container and the lid typically will have a snap fit to facilitate removal and attachment of the lid and the container.
  • the interface between the lid and the container affects breathability and therefore freshness of the tobacco product contained therein.
  • the interface between the lid and the container includes multiple configurations.
  • the lid must be sufficiently strong to prevent flexure that can compromise the connection of the lid to the bottom.
  • the strength of the lid is provided by using sheet metal material having a thickness of greater than or equal to 0.1778 millimeters (0.007 inches).
  • a known container body is disclosed by US2007110928 and, comprises a single fiber structure molded into the container body having an integral bottom portion and an integral side portion; an open cavity defined by the bottom portion and the side portion; and the side portion being perpendicular to the bottom portion such that a rectangular label is mountable to the side portion without creases.
  • GB2136775 discloses a tubular body of a container has protruding latching means, around the mouth, with which an inwardly directed curl of the lid co-operates to retain the lid on the body.
  • the body is round and the curl is an elliptical hoop so that when a pinching force is applied along the major axis of the elliptical hoop the minor axis is spread to unlatch the lid from the body.
  • the principle may be applied to other body shapes such as elliptical, oval and bow sided rectangular.
  • the present invention is directed towards improvements over the state of the art.
  • the lid includes a strengthening feature that allows for a thin gauge sheet metal to be utilized.
  • the strengthening feature may be configured to be used to additionally interlock the lid to the container bottom.
  • the metal lid has a sheet metal body having a reduced gauge thickness of less than 0.1778 millimeters (0.007 inches).
  • the sheet metal is double reduced sheet steel.
  • the sheet metal body is formed into a lid for a tobacco container and has a circular periphery of between about 50.8 and 101.6 millimeters (2 - 4 inches) with a sidewall depending downward therefrom.
  • the sidewall has a strengthening feature formed thereon to accommodate the reduced gauge thickness.
  • the strengthening feature may be located at any height along the sidewall, from a distal end of the sidewall to any appropriate height to accommodate interlocking the lid to the container bottom.
  • the lid has an outer diameter of between about 50.8 and 139.7 millimeters (2 and 5 1/2 inches). In another embodiment, the lid is formed from a single unitary piece of sheet metal
  • the invention provides a method for manufacturing a metal lid for a tobacco container comprising the steps of first selecting a sheet metal that is less than sixty five pound double reduced sheet steel material. A lid having a circular periphery is then formed from the sheet steel material, the lid having an upper wall and a sidewall with a distal end. The distal end of the sidewall is then curled radially inward. A further subsidiary step of this method may include folding a portion of the sidewall radially inward thereby displacing the curl therewith.
  • Methods further include the step of folding a portion of the sidewall radially inward displacing the curl therewith.
  • a further method includes the step of folding a portion of the sidewall radially inward by using a single tool.
  • the step of folding a portion of the sidewall radially inward is accomplished by using a plurality of tooling, said plurality progressively decreasing an angle between the folded portion of the sidewall.
  • the steps of forming a sheet metal body and forming a curl are done using a single tool.
  • a tobacco container comprises a sheet metal body formed into a lid for a tobacco container.
  • the lid has an upper wall with a radius of between about 25.4 to about 69.85 millimeters (1 to 2-3/4 inches) and annular sidewall depending downward from the upper wall, and having a terminating end. A curl is formed on the terminating end, a curl is then formed on the terminating end.
  • a further subsidiary feature of this embodiment may include a container bottom having a bottom wall and an annular sidewall having a bead located on the sidewall that is adapted to interlock with the lid.
  • the curl may be partially flattened to include top and bottom curved segments and a flattened extension segment joining the two, the flattened extension being flatter relative to the top and bottom curved segments.
  • the container bottom is formed from a material selected from the group consisting of cardboard, plastic, and metal.
  • the curl functions as a strengthening feature allowing for a sheet metal with a gauge thickness of less than 0.1778 millimeters (0.007 inches) to be used.
  • the curl also functions as a connecting portion for cooperating with a corresponding connecting feature of the container bottom.
  • the strengthening feature is generally hook shaped in cross-section, having an arcuate head portion. More particularly, the hook shape of the illustrated embodiment is a circular hook shape.
  • a container 10 is illustrated.
  • the container 10 is typically employed to house chewing tobacco or other goods suitable for retail purchase by a consumer.
  • the container 10 has an overall size that allows a consumer to comfortably hold the container within the palm of a hand and to store the container within a shirt pocket or in the rear pocket of a pair of blue jeans.
  • the size for facilitating these tobacco container functions is approximately 63.5 millimeters (2 1/2 inches) in diameter and approximately 25.4 millimeters (1 inch) in axial thickness.
  • the container could be larger or smaller such as between 38.1 millimeters (11/2 inches) in diameter and between 12.7 and 38.1 millimeters (1/2 and 1 1/2 inches) in axial thickness.
  • the tobacco container 10 may include features that make the container more aesthetically pleasing such as, for example, color, images or prints, labels, embossing, and the like.
  • the container 10 may also be secured together by, for example, a band-type adhesive label (not shown) during a packaging process. After the label has been broken, the container 10 may be repeatedly opened and closed such that the consumer may access, as often as desired, a chosen amount of the contents stored in the container 10.
  • the container 10 is formed when a generally cylindrical container bottom 12 receives a generally cylindrical lid 14 (a.k.a., cover).
  • the container bottom 12 may be suitably formed from a variety of different materials, or combinations thereof, such as metal, plastic, cardboard, and the like.
  • the container bottom 12 is formed from a plastic material.
  • the plastic of the container bottom 12 may be either transparent, translucent, or opaque depending on the desired use of the container 10 and whether the contents, or lack of contents, within the container are to be externally viewable.
  • the container bottom 12 is illustrated as generally cylindrical, having a bottom 94 and a sidewall 90 generally transverse to the bottom 94.
  • the sidewall 90 has an inner and an outer face 91, 92.
  • the container bottom 12 is adapted to receive and interlock with the lid 14.
  • the lid 14 is formed from a relatively thin piece of metal (e.g., sheet metal).
  • the lid is manufactured from a double reduced sheet steel that has a reduced gauge of less than sixty five pounds, thereby allowing the lid 14 to have a thickness of approximately no greater than 0.1778 millimeters (0.007 inches).
  • other metals such as, by way of non-limiting example only, aluminum or other steel materials may be used to produce the lid 14.
  • the lid 14 includes an upper wall 16 and a skirt in the form of a cylindrical sidewall 20.
  • the juncture of the sidewall 20 and the upper wall 16 defines a shoulder 18 that may provide an optional upper annular recessed pocket for receiving an upper end of the container bottom 12.
  • the upper wall 16, shoulder 18, and sidewall 20 form a one piece construction, i.e. formed from a continuous single blank of material not from an assembly of parts.
  • the upper wall 16 and sidewall 20 may be mechanically joined by welding, brazing, or other similar methods forming shoulder 18 such that the lid is an assembly of parts.
  • an enclosed storage cavity 24 is defined within the container 10.
  • the storage cavity 24 is where the tobacco products are held until removed by the consumer.
  • the lid 14 and the container bottom 12 are both generally circular in shape, they define and share a common center point 26.
  • the upper wall 16 of the lid 14 generally extends radially outwardly from the center point 26 between about 12.7 millimeters (1/2 inch) and about 50.8 millimeters (2 inches). Therefore, the lid has a diameter 47 of between about 25.4 millimeters (one inch) and about 101.6 millimeters (4 inches). However, the diameter may be larger or smaller in other embodiments. In the illustrated embodiment of FIG. 2 , the diameter 47 of the lid 14 is about 58.42 millimeters (2.3 inches). Although a generally circular shape is illustrated, in other embodiments, the lid 14 and the container bottom 12 may be provided in other shapes.
  • the upper wall 16 includes both a bottom and a top surface 15, 17 (i.e., interior and exterior surface) facing in opposing directions. As the lid 14 is formed from sheet metal, the bottom and top surfaces 15, 17 are parallel to each other such that the upper wall 16 may be considered generally planar or flat.
  • the upper wall 16 may include embossed letters, numbers, images, and the like (collectively "characters"). The embossed characters may project upwardly away from the container or project downwardly into the storage cavity 24. In that regard, the embossed characters either have a height or depth of about 0.381 millimeters (0.015 of an inch) or less.
  • any embossed characters formed on the upper wall 16 are situated radially inward of an embossing limit 32 (represented by a dashed line) and within an embossing portion 34 of the upper wall 16.
  • the embossing limit 32 generally extends radially outwardly from the center point 26 of the upper wall 16 about 12.7 millimeters (half an inch) to about 25.4 millimeters (one inch). Therefore, a diameter 49 of the embossing limit 32 is about 25.4 millimeters (one inch) to about 50.8 millimeters (two inches). In the illustrated embodiment of FIG. 3 , the diameter 49 of the embossing limit 32 is 46.99 millimeters (1.85 inches).
  • annular non-embossed flat portion 36 of the upper wall 16 separates the shoulder 18 and the embossing portion 34.
  • the purpose of this flat non-embossed portion 36 is to facilitate proper bending and folding operations (a.k.a. hemming operations) of the lid 14 sidewall 20 within tight tolerances during metal forming operations for proper interface, snap-fit and freshness functions.
  • the inside diameter of the annular flat portion 36 is spaced apart from the center point 26 of the upper wall 16 between about 19.05 millimeters (3/4 inch) and about 31.75 millimeters (1 1/4 inches).
  • the shoulder 18 is unitarily formed with the upper wall 16 and the sidewall 20.
  • the shoulder 18 extends radially between about 1.27 millimeters (0.05 of an inch) and about 7.62 millimeters (0.3 of an inch), and upwardly from the upper wall about 0.254 millimeters (0.01 of an inch) and about 5.08 millimeters (0.2 inches).
  • the shoulder will not extend upwardly from the upper wall 16 at all and will merge directly into the upper wall 16.
  • the upper wall 16 and sidewall 20 may form a juncture at the radius 100 and not incorporate a ramped portion 102. See for example FIGS. 7 and 8 .
  • the upper wall 16 is generally planar from the center of the lid 14 to its circular periphery. Further, as illustrated in FIG. 4 , a flat may be formed between the radius and the ramped portion.
  • the shoulder 18 includes the ramped segment 102 and the radius 100 that facilitates the transition from the upper wall 16 to sidewall 20. Extending circumferentially about the center 26 (See FIG. 3 ) and downwardly from the shoulder 18 is the sidewall 20.
  • the sidewall 20 includes an outer annular wall segment 54, a fold 40, an inner annular wall segment 52, a transitional segment 112, and a curl 114, all of which also extend circumferentially about the center 26, forming generally annular features.
  • annular may encompass more than circular and can include, for example, oblong, oval, elliptical, etc.
  • the inner and outer annular wall segments 52, 54 radially overlap and are joined by the fold 40.
  • the outer annular wall segment 54 extends axially straight and away from the upper wall 16 and terminates at the fold 40.
  • the inner annular wall segment 52 extends axially straight and toward the upper wall 16 starting from the fold 40 and terminating at the transitional segment 112.
  • the inner annular wall segment 52 is generally parallel to the outer annular wall segment 54, albeit radially spaced inward therefrom.
  • the inner annular wall segment 52 may extend axially upward a distance that may be varied in different embodiments in order to adjust the strength and rigidity of the lid, as well as accommodate interlocking with various configurations of container bottom 12. Further, the inner annular wall segment 52 may be entirely omitted, as will be discussed in more detail below.
  • annular gap 110 Interposed between the inner and outer annular wall segments 52, 54 is an annular gap 110, due to the wall segments 52, 54 being generally parallel to one another and radially overlapping.
  • the gap 110 could be eliminated such that wall segments 52, 54 radially contact and/or the inner and outer annular wall segments 52, 54 be skewed and not parallel.
  • wall segments 52, 54 may extend at slight angles relative to one another.
  • lid 14 has an overall height extending from the shoulder 18 to the fold 40 of between about 2.54 millimeters to about 12.7 millimeters (0.1 - 0.5 inches), and more preferably about 6.35 millimeters (0.25 inches).
  • Fold 40 provides a periphery that is rounded and smooth. Therefore, because the sidewall 20 incorporates the fold 40, it need not be smoothed, ground, buffed, or otherwise machined to eliminate a sharp edge. The fold 40 may therefore serve as a safety at the bottom of the lid 14. Also, the fold 40 allows the lid 14 to be more quickly, easily, and cost-effectively fabricated since there is no additional machining required to remove a sharp edge.
  • the curl 114 is hook shaped and includes a first curl segment 118, a radial apogee 120, a second curl segment 122, and a third curl segment 124.
  • the curl 114 is formed by a terminating end of sidewall 20.
  • the curl 114 acts as a strengthening feature as well as a connecting feature for connecting the lid 14 to container bottom 12 as will be more fully described.
  • the first curl segment 118 is arcuate generally and extends generally radially inward.
  • the first curl segment 118 begins at the transitional segment 112 and terminating at the radially inward radial apogee 120.
  • the second curl segment 122 is arcuate generally and begins at the radial apogee 120 and extends radially outward to an axial apogee, closest to shoulder 18.
  • the third curl segment 124 begins at the axial apogee and bends axially back towards fold 40 and axially away from shoulder 18.
  • the third curl segment 124 includes a portion that is generally tangent to an inner surface of the outer annular wall segment 54. In one embodiment, the third curl segment 124 maintains engagement with the inner surface of the outer annular wall segment 54. However, in other embodiments, third curl segment 124 need not contact sidewall 54.
  • the first, second, and third curl segments 118, 122, 124 together define an annular channel 116.
  • curl 114 generally has a hook shape, it may be formed into a variety of other configurations.
  • the radial apogee 120 of the curl 114 is radially inward from the inner surface a distance of about 0.381 millimeters to about 3.81 millimeters (0.015 - 0.15 inches), but is preferably about 0.635 millimeters (0.025 inches).
  • the curl 114 is typically interposed between the upper wall 16 and the transitional segment 112.
  • the hook shape formed by the curl 114 and inner annular wall segment 52 radially inwardly offsets the radially inner apogee 120 of curl 114 inward from an inner surface of the inner annular wall segment 52.
  • the hook shape in cross-section, forms a generally "?” profile.
  • the sidewall 20 and particularly the inclusion of the strengthening feature in the illustrated form of curl 114 provide a sufficient amount of strength and rigidity to allow the lid 14 to have a reduced wall thickness t than that of typical lids, preferably less than 0.1778 millimeters (0.007 inches) thick.
  • the outer annular wall segment 54 has an outer surface that is substantially cylindrical (i.e. excluding the portions of the shoulder 18 and fold 40) with a constant radius at all axial locations along the outer annular wall segment 54.
  • the container 10 when assembled, can form a substantially cylindrical container (i.e. excluding the shoulder 18, fold 40 and any gaps formed between the container lid 14 and container bottom 12).
  • the lid 14 is typically manufactured by forming the lid 14 in stages using a plurality of progressive tooling, such as progressive dies, rollers and the like. These stages may also be referred to as hemming.
  • a first tool is typically used to form the curl 114.
  • a second tool may then be used to form fold 40 thereby defining the inner and outer annular wall segments 52, 54 such that they are in an angular relationship and generally transverse and typically perpendicular to one another.
  • a third tool may then be used to orient the inner and outer annular wall segments 52, 54 such that they are generally parallel to one another.
  • a fourth tool may be used to form the transitional segment 112 and place the inner annular wall segment 52 proximate to the inner surface of the outer annular wall segment 54 and the third curled segment 124 against and in engageable contact with the inner surface.
  • a single tool may be used to form the curl 114 and fold the inner and outer annular wall segments 52, 54 such that they are generally transverse and typically perpendicular to one another. Also in other embodiments, and as opposed to using a progressive tooling process for locating the curl 114 in its final position, a single tool may be used to orient the inner and outer annular wall segments 52, 54 such that they are parallel and the third curl segment 124 is located in contact with the inner surface of the outer annular wall segment 54, thus removing the need for the third tool as described above.
  • the inner surface 15 of the upper wall 16, interior surface of the outer annular wall segment 54, the inner annular wall segment 52, and the curl 114 are coated with a gold phenolic finish. Even so, in other embodiments other types of coatings or finishes may be applied to, or formed on, these interior surfaces.
  • the lid 14 is illustrated installed on the container bottom 12.
  • An outer surface 92 of the container bottom 12 contains a circumferential bead 78.
  • the curl 114 and the bead 78 are in direct contact and engaged with one another.
  • the curl 114 of the illustrated embodiment acts as both a strengthening feature as indicated above as well as a connector (a.k.a. a connecting feature) for securing the lid 14 to the container bottom 12.
  • a connector a.k.a. a connecting feature
  • the gap 56 aids in guiding the lid 14 onto the container 12.
  • the lid 14 and the container bottom 12 may be telescopically coupled together to form the container 10 and hold the product.
  • the gap 56 enables the consumer to better grasp or grab the lid 14, particularly the fold 40, with their fingers when separating the lid 14 from the container 12.
  • the lid 14 is biased axially downward until the curl 114 slips over the bead 78 forming an axial snap fit and/or interference fit therebetween.
  • the lid 14 may also be supplied in a configuration that does not incorporate a shoulder 18 as illustrated. When supplied as such, the bottom surface 15 of the upper wall 16 may be in contact with the distal end 19 when the lid 14 is installed upon the container bottom 12. This contact provides a seal between the container bottom 12 and the lid 14.
  • the bead 78 may be defined by a single continuous rib, projection or shoulder extending circumferentially about the container sidewall 90 or alternatively by a plurality of angularly spaced intermittent ribs, shoulders or projections.
  • FIGS. 7 and 8 an alternative embodiment of the lid 214 is illustrated.
  • a terminating end of the sidewall 220 is curled radially inward at fold 240 forming curl 252.
  • the upper wall 216 of lid 214 does not incorporate a recess.
  • the upper wall 216 of the lid 214 meet at a junction defined by a shoulder 253.
  • curl 252 has been mechanically flattened.
  • curl 252 includes fold 240 (a.k.a. a bottom curved segment), a flattened extension segment 258, and a top curved segment 260.
  • the flattened extension segment 258 is thereby radially inward of the outer annular wall segment 254 a distance greater than at least the thickness of the sidewall 220.
  • top curved segment 260 of the sidewall 220 does not engage the outer annular wall segment 254, thereby creating a radial gap 251 between a distal end of top curved segment 260 and the outer annular wall segment 254.
  • the distal end of the top curved segment radially faces the inner surface of outer annular wall segment 254.
  • the curl 252 may also be formed such that the top curved segment 260 engages the outer annular wall segment 254.
  • the fold 240, the flattened extension segment 258, and the top curved segment 260 together define an annular channel 262 having a width greater than the thickness of the sidewall 20.
  • the curl may also remain in an unflattened state, as shown in FIG. 6 , i.e. by not flattening extension segment 258.
  • the lid for the tobacco container has an improved strengthening feature, the curl, that allows for the lid to be machined from a sheet metal having wall thickness less then 0.1778 millimeters (0.007 inches), thus reducing overall material cost.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Closures For Containers (AREA)
EP09798393.6A 2008-07-18 2009-06-05 Lid for tobacco container Not-in-force EP2330932B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US8192508P 2008-07-18 2008-07-18
US12/476,405 US20100012534A1 (en) 2008-07-18 2009-06-02 Lid for tobacco container
PCT/US2009/046345 WO2010008699A2 (en) 2008-07-18 2009-06-05 Lid for tobacco container

Publications (3)

Publication Number Publication Date
EP2330932A2 EP2330932A2 (en) 2011-06-15
EP2330932A4 EP2330932A4 (en) 2012-01-25
EP2330932B1 true EP2330932B1 (en) 2014-04-02

Family

ID=41529343

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09798393.6A Not-in-force EP2330932B1 (en) 2008-07-18 2009-06-05 Lid for tobacco container

Country Status (6)

Country Link
US (1) US20100012534A1 (zh)
EP (1) EP2330932B1 (zh)
CN (1) CN102123618B (zh)
CA (1) CA2730974A1 (zh)
MX (1) MX2011000700A (zh)
WO (1) WO2010008699A2 (zh)

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Also Published As

Publication number Publication date
EP2330932A4 (en) 2012-01-25
CN102123618B (zh) 2013-06-19
WO2010008699A3 (en) 2010-03-11
CN102123618A (zh) 2011-07-13
EP2330932A2 (en) 2011-06-15
MX2011000700A (es) 2011-04-11
US20100012534A1 (en) 2010-01-21
CA2730974A1 (en) 2010-01-21
WO2010008699A2 (en) 2010-01-21

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