EP3000744A1 - Induktionsheissversiegelte behälterverschlüsse - Google Patents

Induktionsheissversiegelte behälterverschlüsse Download PDF

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Publication number
EP3000744A1
EP3000744A1 EP15187472.4A EP15187472A EP3000744A1 EP 3000744 A1 EP3000744 A1 EP 3000744A1 EP 15187472 A EP15187472 A EP 15187472A EP 3000744 A1 EP3000744 A1 EP 3000744A1
Authority
EP
European Patent Office
Prior art keywords
container
liner
closure cap
degrees
closure
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.)
Withdrawn
Application number
EP15187472.4A
Other languages
English (en)
French (fr)
Inventor
William M. Heyn
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.)
Individual
Original Assignee
Individual
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
Priority claimed from US14/500,903 external-priority patent/US10287039B2/en
Application filed by Individual filed Critical Individual
Publication of EP3000744A1 publication Critical patent/EP3000744A1/de
Withdrawn legal-status Critical Current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
    • B65D41/00—Caps, e.g. crown caps or crown seals, i.e. members having parts arranged for engagement with the external periphery of a neck or wall defining a pouring opening or discharge aperture; Protective cap-like covers for closure members, e.g. decorative covers of metal foil or paper
    • B65D41/02—Caps or cap-like covers without lines of weakness, tearing strips, tags, or like opening or removal devices
    • B65D41/04—Threaded or like caps or cap-like covers secured by rotation
    • B65D41/0407—Threaded or like caps or cap-like covers secured by rotation with integral sealing means
    • B65D41/0428—Threaded or like caps or cap-like covers secured by rotation with integral sealing means formed by a collar, flange, rib or the like contacting the top rim or the top edges or the external surface of a container neck
    • 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
    • B65D51/00—Closures not otherwise provided for
    • B65D51/18—Arrangements of closures with protective outer cap-like covers or of two or more co-operating closures
    • B65D51/20—Caps, lids, or covers co-operating with an inner closure arranged to be opened by piercing, cutting, or tearing
    • 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
    • B65D2251/00—Details relating to container closures
    • B65D2251/0003—Two or more closures
    • B65D2251/0006—Upper closure
    • B65D2251/0015—Upper closure of the 41-type
    • 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
    • B65D2251/00—Details relating to container closures
    • B65D2251/0003—Two or more closures
    • B65D2251/0068—Lower closure
    • B65D2251/0093—Membrane
    • B65D2251/0096—Membrane integral with the container

Definitions

  • a primary feature of the present invention is to disclose a range of preferred flange angles and widths of seals used to form a seal between the closure and the container on an angled flange, or finish, of the closure and the container rather than merely sealing on a top edge or surface of the container as is presently done. The result is a much stronger seal which is in shear rather than peel.
  • an angled section under, and at the outer, internal edge of the closure is added.
  • the shape of this section can vary depending upon the geometry of the container flange but is intended, in all cases, to exert pressure on the angled liner and container flange as the closure is twisted or snapped into place.
  • angle section is generally around the entire inner corner or circumference, 360 degrees of the closure, some designs change the shape, or reduce the angle, over a small section to prevent a full section heat seal on the periphery to facilitate a pull tab, or peel opening feature.
  • This technique of providing a pull tab helps to initiate the peel opening, and also reduces tearing of the liner or of the lid when opened from the outside by a consumer.
  • the force needed to peel the pull tab is, ideally, in the range of 2 to 6 pounds. The necessary force could be higher, on the order of 10 to 12 pounds, but that risks tearing of the liner or inducing the consumer to use a sharp instrument to tear the liner for opening the container.
  • All current liners are flat and are pushed into the closure as a component, or are cut from a web of liner material and pressed into the closure.
  • the liner contemplated by the present invention may also be flat and may be inserted into the closure the same as with existing liners. Or, the liner may be preformed before insertion into the closure. Preforming has two advantages. First, since the outside diameter of an angled liner could well be greater than flat liners, preforming would allow clearance past the closure threads or snap ring as the liner is being inserted. Second, because of a requirement to angle the full periphery of the liner, preforming would avoid wrinkles which could impede effective seals.
  • the invention is suitable for use with the three different types of closure caps, namely, (1) push on - push off, (2) twist on - twist off, and (3) push on - twist off.
  • the container closures and/or the containers can be provided with helical threads, or with circumferential snap rings.
  • a major trend in the container industry is to blow the bottle finish into the mold rather than use an injection molded finish. Injection has been used in the early days where finish diameters were small (such as with soft drinks) and the small diameter allowed more parisons per mold. Now, especially with bigger diameters (such as 63 mm) the finishes are blown and the injection molded top of the preform is cut off and recycled as plant scrap. The net impact is thinner top finishes which are harder to seal on. Therefore, adding the angled flange gives a good sealing surface and adds the shear feature, rather than peel, if angled correctly.
  • FIG. 1 is a perspective view of a closure member also referred to as a cap or lid known in the prior art, generally indicated by the numeral 10, and includes a central end closure panel 12 and a depending skirt portion 14 for closing a conventional container, such as a metal, glass or plastic can or bottle.
  • a closure member also referred to as a cap or lid known in the prior art, generally indicated by the numeral 10
  • a central end closure panel 12 and a depending skirt portion 14 for closing a conventional container, such as a metal, glass or plastic can or bottle.
  • FIG. 2 is a vertical section of the prior art closure member 10 of FIG. 1 and illustrates a series of internal threaded portions 16 which can be used for pushing on, and twisting off the closure member 10, and includes a flat liner 18 -- which may be made of paper, foil or plastic or be multilayer -- underlying the central end closure panel 12.
  • FIG. 3 shows a fragmentary, vertical, upper container section 20 of a container 22 which is provided with an external, helical threaded portion 24. It is to be understood that a snap ring can be used in lieu of helical threads.
  • a tongue member or flange 26 extends upwardly and inwardly at the uppermost portion of top section 20 and includes a slanted, non-horizontal, upper surface 28 which extends circumferentially about the container 22.
  • the slanted upper surface 28 is shown slanted at a flange angle ⁇ and having a width B.
  • This flange angle for a well known standard 63 millimeter (mm) closure can be in a range of preferably at least about 10 degrees to about 50 degrees, more likely in a range of 15-25 degrees, and preferred at about 20 degrees, plus or minus up to 5 degrees. For larger containers this flange angle can and should be increased to an angle in the range of 25 to 50 degrees.
  • the width B of the flange 28 is in the range of about 0.050 to 0.250 inches with a preferred width of about 0.125 to 0.175 inches.
  • FIG. 4 shows a novel container closure, lid or cap member 30 including a non-horizontal, circumferential, slanted surface 32 which cooperates with the slanted, upper surface 28 on the tongue member 28 of container 22.
  • Closure 30 has a skirt portion 34 which may include internal thread or threads 36 for adapting closure 30 to be threaded onto, or pushed on and twisted off, the top portion 20 of container 22.
  • a liner 38 includes a thin layer of heat-sensitive adhesive 39 on the underside thereof that comes into contact with the slanted surface 28 of the tongue 26 on the top section 20 of the container 22.
  • Liner 38 is preferably of metal foil and the underlying, thin layer of adhesive 39 is heat sensitive such that during closure of the container, induction heating causes the adhesive 39 to seal the liner 38 to the slanted surface 28 on the container 22.
  • a peripheral portion 40 of liner 38 is disposed between the slanted surface 28 of tongue 26 and the slanted surface 32 on the underside of closure member 30. While the parts are shown partly separated for clarity, it is to be understood that when tightly assembled by threads 24 and 36, liner 38 has its peripheral portion 40 tightly pressed against slanted surface 28.
  • slanted surfaces 28 and 32 are shown as having flat, or planar, surfaces, it is to be understood that one surface may be slightly domed and the other surface slightly concave thereby having a smooth even grip on the peripheral portion 40 of liner 38.
  • FIGS. 5 and 6 show an upper container section 42 of a container 44 having exterior threads 46.
  • Container 44 may be formed of plastic, glass or metal, and at its uppermost portion, or finish, is topped with a non-horizontal, slanted surface 48.
  • slanted surface 48 forms a flange angle ⁇ which for the standard 63 mm closure has the same ranges described above with the preferred angle being about 20 degrees, plus or minus a couple of degrees.
  • Slanted surface 48 has a width B in the range of 0.050 to 0.250 inches and a presently preferred width of about 0.125 to 0.175 inches. As is shown in FIG.
  • a peripheral portion 40 of liner 38 is disposed between slanted surface 32 of closure 30 with the heat-sensitive adhesive side 39 disposed for contact with slanted surface 48 of container 44.
  • closure 30 presses the peripheral portion 40, of liner 38, against slanted surface 48, and induction heat is applied for causing adhesive 39 to secure liner 28 to slanted surface 48.
  • the liner 38 is adhered in shear rather than peel. It is shown in FIG. 6 that the peripheral portion 40, of liner 38, includes an overhanging portion forming a pull tab 50 for assisting a consumer in opening the container 44 by peeling liner 38 from container 44.
  • FIG. 7 illustrates a different embodiment of a closure, cap or lid 52 and container 54 wherein an inwardly sloping tongue 56 includes a slanted surface 58 and flat upper surface 60 for increasing the area of contact with the peripheral portion of liner 38. A portion 62 of liner 38 overhangs the tongue 56 to provide a pull tab for assisting a consumer to peel the liner 38 from container 54 after the closure 52 is removed.
  • FIG. 8 is similar to FIG. 7 but includes a closure 64 having a shortened slanted surface 66 and a horizonal flat portion 68 such that a peripheral portion 70 of the liner 38 is free of the tongue 56 to provide a pull tab. It is to be understood that the flat portion 68 may only extend about 10 degrees about the circumference of container 54.
  • FIG. 9 shows a modified closure 94 and a liner 38 having matching outwardly and downwardly slanted surfaces.
  • liner 38 has a thin layer of adhesive on the side thereof that comes into contact with the related container.
  • a container 95 which may be formed of metal, paper or plastic, has an outwardly and downwardly extending flange 96 which comes into contact with liner 38 when pressed together as indicated by the arrow in FIG. 9 , and as shown in FIG. 10 .
  • Closure 94 has an inwardly extending cam surface 97 which deflects container flange 96 inwardly during assembly and the flange 96 then snaps into contact with liner 38 as is shown in FIG. 10 .
  • the parts are shown slightly spaced for clarity but it is to be understood that the flange 96 and liner 38 are in firm contact with each other during the step of induction heating for sealing the container 95 with the adhesive layer 39 of liner 38.
  • FIG. 11 is a fragmentary portion of a modified metal container 98 having an outwardly and downwardly slanted flange 99 which is intended to cooperate with the closure 94, as in FIGS. 9 and 10 .
  • Flange 99 terminates in a curl to protect against a sharp peripheral edge.
  • FIG. 12 shows a closing line, generally indicated by the numeral 100, wherein a plurality of containers 102 are shown moving under a conveyor belt 104 for pressing caps 106 onto the containers 102 and holding them together while an induction heater 108 causes adhesive on the liner contained within the cap 106 to seal the container 102.
  • the adhesive can then be cooled by a cooling unit 110.
  • FIG. 13 shows a further modification wherein a closure, cap or lid 90 includes a ring or series of nibs 92 extending circumferentially about the underside of closure 90 for being contacted by the peripheral edge of liner 38 to center the liner 38 and maintain it in proper position while the closure is placed upon a container during the closing operation.
  • FIG. 14 illustrates an existing, prior art, traditional threaded container 72, threaded closure 73 and liner 74.
  • a bottom part of the circumferential, tamper-band skirt 75 is to be eliminated because tamper evidence is provided by the aluminum sealed liner; also eliminated is an upper part of the container finish 76.
  • FIG. 15 wherein liner 38 has its adhesive side 39 heat sealed to a container tongue 78 and closure 80 is a "Push-On, Push-Off" closure.
  • the weight reduction of the container finish 76 is approximately 5 grams for a container of 63mm finish and the closure skirt portion 75 is also a meaningful change resulting in significant cost savings.
  • FIGS. 14 and 15 represent the identical fill level for both designs of finish and closures.
  • FIG. 16 is a fragmentary showing of a production line for preforming liners 38 from a web of liner material 82 that on its upperside is coated with a thin layer of adhesive 83.
  • Web 82 moves in the direction of arrow 84 and passes beneath a forming tool 86 which shapes the outline of a desired liner 38.
  • the web 82 continues and is acted upon by a punch 88 that inserts liner 38 into an underlying closure 52 first shown in FIG. 7 and shown in cross section in FIG. 17 . It is to be understood that the same procedure is used for inserting a liner 38 into closures 30, 64 and 80, described above.
  • FIGS. 18 and 19 are both examples of prior art closures wherein the end panels wherein the central end panel closures 12 are joined to depending skirt portions 14 at right angles 15.
  • a gasket 19 of moldable resilient material is applied within the right angle corner where the end panel closure 12 meets the skirt portion 14.
  • FIG. 20 is an improvement over the embodiments of FIGS. 18 and 19 .
  • a gasket 25 of moldable resilient material is provided where the end panel 21 meets with the depending skirt portion 23.
  • the gasket 25 is caused to conform to the tapered tongue 56 and capture and press a peripheral portion of liner 38 and place it in shear.
  • a pull tab 70 assists the consumer in initially pealing the liner from the container 54.
  • FIG. 21 illustrates a closure cap 120 for a blow molded container 122 having a substantially horizontally, plus or minus 5 degrees, inwardly, extending flange 124.
  • Closure cap 120 holds liner 38 against flange 124 during induction heating for causing adhesive 39 to secure the liner 38 to flange 124.
  • This embodiment of the invention is useful for vacuum packed products wherein liner 38 tends to be drawn into the container 122 but is securely held, in shear, to the top surface of flange 124.
  • FIG. 21 also illustrates a feature of the invention with respect to the width of the container flanges and the sealing area between the respective liners 38 and adhesive layer 39 of the various disclosed embodiments.
  • the dimension D in FIG. 21 may be in the range of 0.050 to 0.250 inches, or wider for larger containers.
  • the width of dimension D may typically be in the range of about 0.125 to 0.250 inches and a presently preferred width of about 0.175 inches.
  • the width of dimension D would likely be increased.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Closures For Containers (AREA)
EP15187472.4A 2014-09-29 2015-09-29 Induktionsheissversiegelte behälterverschlüsse Withdrawn EP3000744A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US14/500,903 US10287039B2 (en) 2014-07-19 2014-09-29 Induction heat sealed container closures

Publications (1)

Publication Number Publication Date
EP3000744A1 true EP3000744A1 (de) 2016-03-30

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EP15187472.4A Withdrawn EP3000744A1 (de) 2014-09-29 2015-09-29 Induktionsheissversiegelte behälterverschlüsse

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3424835A1 (de) * 2017-07-03 2019-01-09 Tetra Laval Holdings & Finance S.A. Deckel für eine lebensmittelverpackung
CN113291618A (zh) * 2021-07-26 2021-08-24 常州树杰塑业有限公司 一种用于承载塑料薄膜添加剂用的添加桶

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4072244A (en) * 1977-02-04 1978-02-07 Owens-Illinois, Inc. Linerless closure
US4501371A (en) * 1983-12-05 1985-02-26 Owens-Illinois, Inc. Tamper indicating, non-resealable closure
EP0146011A2 (de) * 1983-12-13 1985-06-26 Ivo J. Hauser Behälter mit einem Deckel
EP0179498A1 (de) * 1984-10-19 1986-04-30 Lynes Holding S.A. Verfahren zum Abdichten eines Behälters
WO2013088422A2 (en) * 2011-12-15 2013-06-20 Aron Joseph Clarkson A three-part closure sealing and dispensing device for all types of Containers
WO2014130170A1 (en) * 2013-02-22 2014-08-28 Heyn William M Induction heat sealed container closures

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4072244A (en) * 1977-02-04 1978-02-07 Owens-Illinois, Inc. Linerless closure
US4501371A (en) * 1983-12-05 1985-02-26 Owens-Illinois, Inc. Tamper indicating, non-resealable closure
EP0146011A2 (de) * 1983-12-13 1985-06-26 Ivo J. Hauser Behälter mit einem Deckel
EP0179498A1 (de) * 1984-10-19 1986-04-30 Lynes Holding S.A. Verfahren zum Abdichten eines Behälters
WO2013088422A2 (en) * 2011-12-15 2013-06-20 Aron Joseph Clarkson A three-part closure sealing and dispensing device for all types of Containers
WO2014130170A1 (en) * 2013-02-22 2014-08-28 Heyn William M Induction heat sealed container closures

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3424835A1 (de) * 2017-07-03 2019-01-09 Tetra Laval Holdings & Finance S.A. Deckel für eine lebensmittelverpackung
WO2019007913A1 (en) * 2017-07-03 2019-01-10 Tetra Laval Holdings & Finance S.A. CAP FOR FOOD PACKAGING
CN113291618A (zh) * 2021-07-26 2021-08-24 常州树杰塑业有限公司 一种用于承载塑料薄膜添加剂用的添加桶

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