EP4144662A1 - Bouchon de fermeture, récipient comprenant le bouchon de fermeture, ainsi que procédé de fabrication d'un bouchon de fermeture - Google Patents

Bouchon de fermeture, récipient comprenant le bouchon de fermeture, ainsi que procédé de fabrication d'un bouchon de fermeture Download PDF

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Publication number
EP4144662A1
EP4144662A1 EP21195293.2A EP21195293A EP4144662A1 EP 4144662 A1 EP4144662 A1 EP 4144662A1 EP 21195293 A EP21195293 A EP 21195293A EP 4144662 A1 EP4144662 A1 EP 4144662A1
Authority
EP
European Patent Office
Prior art keywords
closure cap
opening
engagement element
axis
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Withdrawn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
EP21195293.2A
Other languages
German (de)
English (en)
Inventor
Herbert Wohlgenannt
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.)
Capartis AG
Original Assignee
Capartis AG
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 Capartis AG filed Critical Capartis AG
Priority to EP21195293.2A priority Critical patent/EP4144662A1/fr
Priority to MX2024002870A priority patent/MX2024002870A/es
Priority to CN202280060423.5A priority patent/CN117980235A/zh
Priority to PCT/EP2022/074212 priority patent/WO2023036667A1/fr
Priority to EP22773132.0A priority patent/EP4399162A1/fr
Publication of EP4144662A1 publication Critical patent/EP4144662A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS 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
    • B65D41/00Caps, 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
    • B65D41/02Caps or cap-like covers without lines of weakness, tearing strips, tags, or like opening or removal devices
    • B65D41/04Threaded or like caps or cap-like covers secured by rotation
    • B65D41/0407Threaded or like caps or cap-like covers secured by rotation with integral sealing means
    • B65D41/0414Threaded or like caps or cap-like covers secured by rotation with integral sealing means formed by a plug, collar, flange, rib or the like contacting the internal surface of a container neck
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS 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
    • B65D41/00Caps, 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
    • B65D41/02Caps or cap-like covers without lines of weakness, tearing strips, tags, or like opening or removal devices
    • B65D41/04Threaded or like caps or cap-like covers secured by rotation
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS 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
    • B65D41/00Caps, 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
    • B65D41/02Caps or cap-like covers without lines of weakness, tearing strips, tags, or like opening or removal devices
    • B65D41/04Threaded or like caps or cap-like covers secured by rotation
    • B65D41/0485Threaded or like caps or cap-like covers secured by rotation with means specially adapted for facilitating the operation of opening or closing
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS 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
    • B65D41/00Caps, 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
    • B65D41/02Caps or cap-like covers without lines of weakness, tearing strips, tags, or like opening or removal devices
    • B65D41/04Threaded or like caps or cap-like covers secured by rotation
    • B65D41/06Threaded or like caps or cap-like covers secured by rotation with bayonet cams, i.e. removed by first pushing axially to disengage the cams and then rotating
    • B65D41/065Threaded or like caps or cap-like covers secured by rotation with bayonet cams, i.e. removed by first pushing axially to disengage the cams and then rotating with integral internal sealing means
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS 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
    • B65D41/00Caps, 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
    • B65D41/32Caps or cap-like covers with lines of weakness, tearing-strips, tags, or like opening or removal devices, e.g. to facilitate formation of pouring openings
    • B65D41/34Threaded or like caps or cap-like covers provided with tamper elements formed in, or attached to, the closure skirt
    • B65D41/3442Threaded or like caps or cap-like covers provided with tamper elements formed in, or attached to, the closure skirt with rigid bead or projections formed on the tamper element and coacting with bead or projections on the container
    • B65D41/3447Threaded or like caps or cap-like covers provided with tamper elements formed in, or attached to, the closure skirt with rigid bead or projections formed on the tamper element and coacting with bead or projections on the container the tamper element being integrally connected to the closure by means of bridges
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS 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
    • B65D41/00Caps, 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
    • B65D41/32Caps or cap-like covers with lines of weakness, tearing-strips, tags, or like opening or removal devices, e.g. to facilitate formation of pouring openings
    • B65D41/34Threaded or like caps or cap-like covers provided with tamper elements formed in, or attached to, the closure skirt
    • B65D41/36Threaded or like caps or cap-like covers provided with tamper elements formed in, or attached to, the closure skirt with bayonet cams, i.e. removed by first pushing axially to disengage the cams and then rotating
    • B65D41/365Threaded or like caps or cap-like covers provided with tamper elements formed in, or attached to, the closure skirt with bayonet cams, i.e. removed by first pushing axially to disengage the cams and then rotating with integral internal sealing means
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS 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
    • B65D55/00Accessories for container closures not otherwise provided for
    • B65D55/16Devices preventing loss of removable closure members
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS 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
    • B65D2401/00Tamper-indicating means
    • B65D2401/15Tearable part of the closure
    • B65D2401/30Tamper-ring remaining connected to closure after initial removal

Definitions

  • the present invention relates to a closure cap for a screw cap.
  • the present invention also relates to a container with the closure cap.
  • the present invention further relates to a method for producing a closure cap for a screw cap.
  • Known containers comprising a container body and a closure cap which closes the container body have the disadvantage that their recycling is extremely complex.
  • Such containers which are used, for example, as disposable beverage containers, occur in enormously large numbers and should increasingly be professionally disposed of and preferably recycled in the future.
  • the recycling of such beverage containers is very complex because the container body and the closure cap usually consist of a different material, the container body usually consisting of PET (polyethylene terephthalate) and the closure cap usually made of an elastic solid material such as PE (polyethylene) or PP (polypropylene).
  • PET polyethylene terephthalate
  • PE polyethylene
  • PP polypropylene
  • Such beverage containers are usually returned either with the closure cap in place, or at least with partial components of the closure cap, such as the guarantee strip.
  • optimal recycling of the materials of such beverage containers is only possible if the materials are available separately after recycling.
  • complete removal of the closure cap or the guarantee band from the container body is very complex, which is why such beverage containers are occasionally incinerated and
  • Known beverage containers include, for example, a container body designed as a PET bottle and include a closure cap, for example designed as a so-called PCO-28 closure, either 21 mm (type 1810) or 18 mm (type 1881) in height.
  • the object of the present invention is to at least reduce these and other disadvantages of the prior art and in particular to specify a closure cap of the type mentioned at the outset which, compared to the known closure caps, is preferably easier to recycle and preferably also easier to manufacture.
  • the present invention is based on the object of simplifying the recycling of containers including the closure cap.
  • a closure cap with a closure cap axis, a cylindrical cap shell, a cover disk, and an engagement element formed on the inside of the cap shell and protruding towards the closure cap axis, the engagement element being designed as an internally threaded part or as a bayonet closure part, and wherein the
  • the cover disk has an opening in the region of its periphery, and the engagement element is below the opening in the direction of the axis of the closure cap and is preferably aligned with respect to the opening the opening is arranged.
  • the closure cap comprises at least one engagement element and preferably a plurality of engagement elements arranged spaced apart from one another in the circumferential direction, with each engagement element being assigned an opening in the direction of the axis of the closure cap.
  • Each engagement element extends in the circumferential direction to the axis of the closure cap, advantageously by a maximum of the width of the associated opening, with the internal thread of the closure cap being formed by the sum of the engagement elements.
  • the object is also achieved in particular with a method for producing a closure cap comprising a closure cap axis, a cover disk and a cylindrical cap jacket with an engagement element protruding towards the closure cap axis, in that a first mold half and a second mold half form a shaping cavity in the closed state, in that the The outer contour of the closure cap is determined by the first half of the mold, while the inner contour of the closure cap is essentially determined by the second half of the mold, the first half of the mold having a finger-like web that runs in the direction of the axis of the closure cap and protrudes into the cavity, with a Cavity part is defined by a molded part of the second mold half and by a tip of the web of the first mold half, so that when filling the cavity with plastic di e closure cap is produced comprising the cover disk and the cap skirt with engagement element, with the web also producing an opening in the cover disk, with the two halves of the mold being linearly displaced relative to one another during opening, and the closure cap produced released without forced dem
  • the closure cap according to the invention is particularly advantageously designed in such a way that the entire closure cap can be produced by injection molding without forced demoulding.
  • the closure cap on the cover disc also includes a sealing lip, with the sealing lip running concentrically with the axis of the closure cap.
  • the sealing lip does not have an undercut, so that the sealing lip can also be produced without forced demolding.
  • the sealing lip can also have an undercut, so that the closure cap, with the exception of the sealing lip, can be produced without forced demoulding.
  • the method for producing the closure cap allows it to be produced preferably without forced demoulding. This results in the advantage that the closure cap can be produced particularly inexpensively, for example from materials consisting essentially of PET, PE or PP, but particularly preferably of PET.
  • PET polyethylene terephthalate
  • PET polyethylene terephthalate
  • PET polyethylene terephthalate
  • PET is a very stable plastic that cannot or only very slightly be stretched in the injection molding process. Because PET is extremely tough and resilient, this plastic is very unbreakable. This is a major reason why beverage bottles are very often made from PET, especially since PET also has high barrier properties that can retain carbon dioxide. In addition, PET has a high aroma density and very good resistance to fats.
  • the closure cap according to the invention is also made of PET.
  • the closure cap according to the invention is designed in such a way, or the method according to the invention for producing the closure cap has only method steps that do not require forced demoulding during production. It is therefore possible with the method according to the invention to nevertheless produce a closure cap consisting of PET or essentially consisting of PET.
  • the method according to the invention is of course also suitable for the production of closure caps consisting of materials other than PET, for example PE or PP.
  • the closure cap according to the invention consisting of PET or essentially of PET, is used particularly advantageously in combination with container bodies consisting of PET or essentially of PET, so that the entire container, ie both the container body and the closure cap, consists of PET.
  • a container can be recycled in an extremely simple manner, since it is no longer necessary to separate the material of the closure parts and the container body.
  • the closure cap is also particularly advantageously designed in such a way that, even after opening, the closure cap cannot be separated from the container body or can only be separated with great effort, so that it preferably remains permanently connected to the container body.
  • Such a container has the advantage that the entire container, including the container body and the closure cap, can be recycled again, and that individual parts such as a single closure cap or a single guarantee strip are avoided.
  • Such a container is therefore extremely environmentally friendly because, on the one hand, the container has to be dismantled is avoided by separating individual parts, and because, on the other hand, the container can be completely and sorted for recycling without laborious sorting of
  • the container including the container body and the closure cap is made of the same material such as PET.
  • PET In addition to PET, however, other materials are also suitable, which are not listed in detail here, in order to produce the container body and the closure cap from the same material.
  • the method according to the invention and the closure cap according to the invention enable production without forced demoulding, so that closure caps consisting of materials can also be produced which were previously unsuitable for the production of closure caps, because previously during the production of a closure cap, forced demolding was necessary, for example by using an in a closure cap produced in a mold could only be removed from the mold by forced demoulding.
  • FIG 1 shows a perspective view of a closure cap 2 according to the invention with a closure cap axis 10, a cylindrical cap shell 3, a cover disk 5 and a free edge 7, with the closure cap 2 essentially consisting of the cap shell 3 and the cover disk 5, which the cylindrical cap shell 3 upwards limited towards.
  • the closure cap axis 10 runs through the center of the cover disk 5, and the cylindrical cap jacket 3, in particular its outer surface 3b, preferably runs concentrically to the closure cap axis 10.
  • the free edge 7 is located at the end of the closure cap opposite the cover disk 5 with respect to the direction in which the closure cap axis 10 runs 2.
  • the cap skirt 3 runs exactly parallel to the closure cap axis 10.
  • the cap skirt 3 particularly preferably points in the direction of the closure cap axis 10, as shown in FIG figure 20 shown, from the cover disk 5 to the free edge 7 slightly widening, in particular conically widening course, with an angle relative to the closure cap axis 10 in the range of, for example, 0.1 ° to 5 °.
  • This slight widening of the cap jacket 3 in the direction of the axis 10 of the cap has the advantage that the cap 2 can be removed more easily from a mold after it has been produced, and preferably without forced demoulding.
  • a cap jacket 3 designed in this way is also referred to herein as a cylindrical cap jacket, since the cap jacket 3 is cylindrical or im Substantially cylindrical with respect to the closure cap axis 10 runs.
  • the closure cap 2 has a circumferential direction U running concentrically to the closure cap axis 10, it being possible for the closure cap 2 to be opened with a rotation in the opening rotation direction U1.
  • the cap jacket 3 has an outer surface 3b, which can be designed and structured in a large number of embodiments.
  • the outer surface 3b comprises a plurality of grooves 3a running in the direction of the closure cap axis 10 . This configuration has the advantage that the outer surface 3b can be held better with the fingers.
  • the figure 2 shows a top view and the figure 3 a bottom view of the closure cap 2 according to figure 1 , and the Figures 4 and 5 a longitudinal section through the closure cap 2 according to Figure 2 along the section line AA and the section line BB.
  • the closure cap 2 comprises a single engagement element 6 formed on the inside of the cap casing 3 and protruding from the cap casing 3 towards the closure cap axis 10, the engagement element 6 being designed as an internally threaded part or as a bayonet catch part.
  • the cover disk 5 preferably has a single opening 4 in the region of its periphery, with the engagement element 6 being arranged with respect to the opening 4 in the direction of the closure cap axis 10, in particular in the direction of extension of the closure cap axis 10, and below the opening 4, in the direction of the Closure cap axis 10 in an area between the cover disc 5 and the free edge 7.
  • the engagement element 6 with respect to the opening 4 in the extension direction of the closure cap axis 10 below the opening 4 so that a parallel running through the engagement element 6 to the closure cap axis 10 also runs through the opening surface of the opening 4 .
  • the engagement element 6 is arranged in alignment with the opening 4 in the direction of the closure cap axis 10 .
  • the engagement element 6 is dimensioned such that a light beam running in the direction of the closure cap axis 10 and shining through the opening 4 specifies the maximum dimension of the engagement element 6 in a plane running perpendicular to the direction of the closure axis 10.
  • the opening 4 has, as in figure 2 shown, has an opening length 4z in the circumferential direction U, and has an opening width 4y radially to the closure cap axis 10 .
  • the engagement element 6 has, as in figure 3 shown, has an engagement element length 6z in the circumferential direction U, and has an engagement element width 6y radially to the closure cap axis 10 .
  • the engagement element 6 is aligned in the direction in which the closure cap axis 10 extends arranged with respect to the opening 4 such that the engagement element length 6z corresponds to the opening length 4z, or these have the same or essentially the same length, and preferably also in such a way that the engagement element width 6y corresponds to the opening width 4y, or they have the same or essentially the same width.
  • the opening 4 has an opening length 4z in the circumferential direction U
  • the engagement element 6 has an engagement element length 6z in the circumferential direction U, the opening length 4z being greater than or equal to the engagement element length 6z, the opening length 4z preferably being at least is twice as large as the engagement element length 6z.
  • the cap 2 as in the Figures 1 to 5 shown, a plurality of openings 4, 4b, 4c and engagement elements 6, 6b, 6c, which are arranged spaced apart from one another in the circumferential direction U, each engagement element 6, 6b, 6c in the direction of the closure cap axis 10 having a corresponding opening 4, 4b, 4c is assigned, wherein the engagement element length 6z of the engagement element 6, 6b, 6c is less than or equal to the opening length 4z of the respectively associated opening 4, 4b, 4c.
  • the engagement element lengths 6z of the engagement elements 6, 6b, 6c are of the same length as the opening length 4z of the respective associated opening 4, 4b, 4c, and preferably have, as in FIGS Figures 1 to 5 shown, all the openings 4, 4b, 4c and all the engagement elements 6, 6b, 6c have the same length in the circumferential direction U.
  • the closure cap 2 has at least two openings 4, 4b and two engagement elements 6, 6b, with each engagement element 6, 6b being assigned one opening 4, 4b, the closure cap 2 in particular having between two and twenty engagement elements 6, 6b , 6c, 6d, 6e, 6f, 6g, 6h, 6i, 6k, 6l, 6m, and accordingly between two to twenty associated openings 4, 4b, 4c, 4d, 4e, 4f, 4g, 4h, 4i, 4k , 4l, 4m can have.
  • the closure cap 2 particularly preferably comprises at least eight and preferably at least twelve engagement elements 6, 6b, 6c and preferably at least eight and preferably at least twelve openings 4, 4a, 4b assigned to one of the engagement elements 6, 6b, 6c.
  • Particularly advantageously includes the cover disc 5 of the closure cap 2, such as in Figures 4, 5 , 18, 19 or 20 shown, a circumferential sealing lip 11, which, such as in the Figures 3 and 14 shown, in the circumferential direction U between the opening 4 or the openings 4, 4b, 4c, 4d, 4e, 4f, 4g, 4h, 4i, 4k, 4l, 4m and the axis 10 of the closure cap.
  • each of the engaging elements 6, 6b, 6c, 6d, 6e, 6f, 6g, 6h, 6i, 6k, 6l, 6m forms an internally threaded part, this being in the direction of the cap axis 10 are advantageously arranged mutually offset in such a way that all of the engagement elements 6, 6b, 6c, 6d, 6e, 6f, 6g, 6h, 6i, 6k, 6l, 6m form an internal thread with a pitch S in the circumferential direction U, with this internal thread, like out figure 5 apparent, essentially by almost 360 ° in the circumferential direction U extends.
  • the engagement elements 6, 6b, 6c, 6d, 6e, 6f, 6g, 6h, 6i, 6k, 6l, 6m shown have a different arrangement, with these engagement elements being mutually offset in the direction of the closure cap axis 10 in such a way that the entirety of the engagement elements 6 , 6b, 6c, 6d, 6e, 6f, 6g, 6h, 6i, 6k, 6l, 6m in the circumferential direction U in turn form an internal thread, this internal thread essentially extending by almost 720° in the circumferential direction U.
  • the closure cap according to the invention has the advantage that the total length of the internal thread formed by the engagement elements in the circumferential direction U and/or the pitch of the internal thread can be varied within a wide range by a corresponding arrangement and/or a corresponding number of engagement elements.
  • the Figures 9 to 11 show a mold 20 for producing the in FIGS Figures 1 to 5 cap shown 2.
  • the mold 20 comprises a first mold half 21 and a second mold half 22 forming a shaping cavity 23 within which the closure cap 2 is manufactured by filling the cavity 23 with a plastic material by means of injection molding.
  • the cavity 23 is already filled with plastic material.
  • the two mold halves 21, 22 can be seen in a linear movement direction 24 mutually displaceable, with the direction of movement 24 running parallel to the axis 10 of the closure cap, and with the first mold half 21 having finger-shaped webs 21a running in the direction of movement 24, which are spaced apart from the edge of the first mold half 21 by a gap 21b.
  • finger-shaped webs 21a serve, as in figure 11 explained in detail, in particular for the production of the engagement elements 6, 6b .. 6m.
  • figure 11 shows the mold 20 in the fully extended state in which the closure cap 2 produced can be removed.
  • the first mold half 21 comprises an inner side surface 21c for producing the outer surface of the cap jacket 3, and comprises a plurality of finger-shaped webs 21a, which have a boundary surface 21d at their tip.
  • the second mold half 22 comprises an outer surface 22a for producing the inner surface of the cap skirt 3, and comprises a plurality of grooves 22c which end in a boundary surface 22b.
  • Each finger-shaped web 21a is assigned a groove 22c, with, as in figure 9 shown, when the mold 20 is closed, all finger-shaped webs 21a engage in the corresponding associated grooves 22c, and internal cavities are formed in each case by the boundary surfaces 21d and 22b and the side walls of the grooves 22c, which serve to produce the engagement elements 6.
  • Each finger-shaped web 21a also creates an opening 4, 4b .. 4m in the cover disk 5 of the closure cap 2.
  • the method for producing a closure cap 2 having a closure cap axis 10, a cover disk 5 and a cylindrical cap jacket 3 with at least one engagement element 6 protruding towards the closure cap axis 10 is carried out in such a way that a first mold half 21 and a second mold half 22 form a shaping cavity in the closed state 23 form, with the outer contour of the closure cap 2 is determined by the first mold half 21, the inner contour of the closure cap 2 being essentially determined by the second mold half 22, the first mold half 21 having a finger-like web 21a running in the direction of the closure cap axis 10 and protruding into the cavity 23, wherein a cavity part delimiting the engagement element 6 is defined by a molded part 22b of the second mold half 22 and by a tip 21d of the web 21a of the first mold half 21, so that when the cavity 23 is filled with plastic, the closure cap 2 comprising the cover disk and the cap jacket 3 with the engagement element 6 is generated.
  • an opening 4 in the cover disk 5 is produced by the web 21a.
  • the two mold halves 21, 22 are mutually linearly displaced during opening, and the closure cap 2 produced is preferably released and ejected without being forced to demould.
  • the second mold half 22 comprises an end face 22e, in which a groove 22d for producing a sealing lip 11 is advantageously embedded.
  • the groove 22d is preferably shaped in such a way that the sealing lip 11 produced is removed from the second mold half 22 without forced demolding during a linear movement of the two mold halves 21, 22 in the direction of movement 24.
  • a sealing lip 11 configured in this way would, however, be subject to forced demoulding when removed from the second mold half 22 .
  • the Figures 12 to 19 show a further exemplary embodiment of a closure cap 2.
  • the cap casing 3 is connected to a guarantee strip 8 at the end section opposite the cover disc 5, the free edge 7.
  • the anti-tamper strip 8 is preferably a material weakening 9 running in the circumferential direction U connected to the free edge 7 via a plurality of separating webs 9a arranged spaced apart in the circumferential direction.
  • the guarantee band 8 comprises at least a single, and preferably a plurality of, locking parts 8b protruding towards the closure cap axis 10 .
  • the at least one locking part 8b is arranged below the opening 4 in the direction of the closure cap axis 10 and in particular in alignment with the opening 4 .
  • the anti-tamper strip 8 preferably comprises a plurality of locking parts 8b, 8d, 8f, 8h spaced apart from one another in the circumferential direction U, with certain openings 4, 4b, 4c in the direction of the closure cap axis 10 being assigned a locking part 8b, 8d, 8f, 8h.
  • the opening length 4z of the respective opening 4, 4b, 4c is greater than or equal to a locking part length 8z of the associated locking part 8a, 8b, 8c.
  • both an engagement element 6 and a locking part 8a are assigned to the same opening 4, 4b, 4c in the circumferential direction U one after the other, as can be seen, for example, in FIGS Figures 13 and 14 is evident.
  • the anti-tamper strip 8 is connected to the cap jacket 3 via an additional first connecting section 12a and an additional second connecting section 12b, with the first and the second connecting section 12a, 12b advantageously being connected to one another via a stronger or more rigid connecting part 14, and /or wherein the second connecting part 12b is connected to the anti-tamper strip 8 via a stronger or stiffer connecting part 15.
  • the first connection section 12a in addition to the direct connection to the cap jacket 3, such as in figure 16 shown, preferably also connected to the cap jacket 3 via a first tear line 13a running in the circumferential direction U.
  • the first connecting section 12a and the second connecting section 12b are, in addition to the connecting part 14, preferably also connected to one another via a second tear line 13b.
  • the second connecting section 12b in addition to the connecting part 15, is also connected to the anti-tamper strip 8 via the weakened material 9, in particular separating webs 9a.
  • the first and/or the second tear line 13a, 13b could also be dispensed with.
  • a closure cap 2 comprising the first and/or the second connecting section 12a, 12b has the advantage that it is held on a container neck via the guarantee band 8 even after it has been opened.
  • the closure cap or the connecting sections 12a, 12b are preferably designed in such a way that the cap jacket 3 is inseparably connected to the guarantee band 8, so that a closure cap preferably remains permanently connected to a container neck even after it has been opened.
  • closure cap 2 is preferably made with a mold that in addition to the Figures 9 to 11 illustrated first and second mold halves 21, 22 also includes two further mold halves, which are moved perpendicularly to the direction of movement 24, and which in particular form the area of the guarantee band 8, and the connecting parts 14, 15 and the connecting sections 12a, 12b, or the cavity train to form the parts mentioned.
  • a mold is in particular designed in such a way that the closure cap 2 can be produced without being forced to be removed from the mold and can be ejected from the mold.
  • FIG 21 shows a side view, partially in section, of a container neck 31 of a container body 30.
  • the container neck 31 comprises a pouring opening 32, an external thread 33, a projection 34, also known as a pilferproof ring, and a container neck ring 35.
  • the container neck 31 has an end face 37 and a tank outlet interior 38 .
  • an end section 36 of the container body 30 is also shown.
  • the closure cap 2 according to the invention can, for example, be screwed onto such a container body 30 . If the closure cap 2 includes a guarantee ring 8 , its locking parts 8 a , 8 b , 8 c , 8 d preferably come to lie below the projection 34 in the direction of the closure cap axis 10 .
  • the locking parts 8a, 8b are advantageously slipped over. 8c, 8d via the projection 34 as in FIGS Figures 22 and 23 shown in such a way that the guarantee ring 8 in figure 23 position shown is guided over the projection 34, so that the guarantee ring 8 then figure 22 position shown.
  • the transfer of the guarantee ring 8 takes place in figure 23 preferably such that no plastic deformation occurs on the guarantee ring 8, and thus no excessive tensile forces occur.
  • the interior of the container is sealed by the closure cap 2 in such a way that the end face 37 of the container neck 31 rests against the closure cap 2 .
  • the closure cap 2 as shown in figure 20 shown, also has a sealing lip 11 which bears against the inside 38 of the container neck.
  • the container neck 31 comprises a widening end section 39 which advantageously widens conically by a constant angle ⁇ .
  • the sealing lip 11 tapers towards its tip, particularly advantageously at least in sections conically, under a preferably at least in sections constant angle ⁇ .
  • the embodiment shown is particularly suitable if the container neck 31 or the container body 30 and the closure cap 2 are made of the same material, in particular a material with a low coefficient of elasticity such as PET.
  • figure 24 shows a container body 30 whose container neck 31 is designed as part of a bayonet lock.
  • the container neck 31 has on the outside thereof a complementary engaging element 40 with a section part 40a which runs perpendicular to the longitudinal axis of the container neck 31.
  • figure 25 shows a closure cap 2 with a total of four engagement elements 6, 6b, 6c, 6d protruding towards the closure cap axis 10, these engagement elements being designed as bayonet closure parts, so that this closure cap 2 can be used to close the in figure 24 illustrated container body 30 is suitable.
  • the container body 30, which is closed with the closure cap according to the invention, can be configured in a number of ways, with the container comprising a container neck 31 with an external thread 33 or with a bayonet closure part.
  • the container can be designed, for example, as a bottle or as a cardboard container comprising a container neck.
  • At least the container neck and the closure cap consist of the same material, in particular essentially of polyethylene terephthalate (PET).
  • PET polyethylene terephthalate
  • the entire container body, including the container neck, is particularly preferably made of the same material as the closure cap.
  • the closure cap comprises an attachment, for example designed as a second cover disk, this attachment having coupling parts running in the direction of the closure cap axis 10, which are arranged and designed in such a way that they can be inserted into at least one and preferably into all openings 4, 4b, .. 4m of the closure cap 2 can be inserted, and preferably can be or are firmly connected to the closure cap 2, preferably in such a way that the attachment bears against the first cover disk 5, and preferably bears flat, the diameter of the attachment being preferably selected in such a way that the essay covers all openings 4, 4b, .. 4m.
  • the attachment advantageously has the same diameter as the cover disk 5 of the closure cap 2.
  • the attachment can be configured in a number of ways, and could also be configured, for example, as a container or a drinking vessel which is connected to the closure cap 2 in a fixed or detachable manner.
  • the closure cap according to the invention is preferably designed in such a way that the cover disk has an opening in the region of its periphery, and that the engagement element is arranged below the opening in the direction of the closure cap axis with respect to the opening and in alignment with the opening in the direction of the closure cap axis.
  • the closure cap according to the invention is designed in such a way that the cover disk has an opening in the region of its periphery, and that the engagement element is arranged below the opening with respect to the opening in the direction of the closure cap axis, with the engagement element being arranged in alignment with the opening is, wherein this aligned direction does not run parallel to the axis of the closure cap, but has a different direction, and for example runs inclined with respect to the axis of the closure cap.
  • the closure cap can also have a plurality of engagement elements and associated openings, each engagement element being arranged in alignment with respect to the associated opening, the aligned directions not running in the direction of the closure cap axis but parallel and/or inclined to one another.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Closures For Containers (AREA)
EP21195293.2A 2021-09-07 2021-09-07 Bouchon de fermeture, récipient comprenant le bouchon de fermeture, ainsi que procédé de fabrication d'un bouchon de fermeture Withdrawn EP4144662A1 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
EP21195293.2A EP4144662A1 (fr) 2021-09-07 2021-09-07 Bouchon de fermeture, récipient comprenant le bouchon de fermeture, ainsi que procédé de fabrication d'un bouchon de fermeture
MX2024002870A MX2024002870A (es) 2021-09-07 2022-08-31 Cubierta de cierre, contenedor que comprende la cubierta de cierre y metodo de fabricacion de una cubierta de cierre.
CN202280060423.5A CN117980235A (zh) 2021-09-07 2022-08-31 封闭盖、包含封闭盖的容器以及封闭盖的制作方法
PCT/EP2022/074212 WO2023036667A1 (fr) 2021-09-07 2022-08-31 Bouchon de fermeture, contenant comprenant le bouchon de fermeture, et procédé de fabrication d'un bouchon de fermeture
EP22773132.0A EP4399162A1 (fr) 2021-09-07 2022-08-31 Bouchon de fermeture, contenant comprenant le bouchon de fermeture, et procédé de fabrication d'un bouchon de fermeture

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP21195293.2A EP4144662A1 (fr) 2021-09-07 2021-09-07 Bouchon de fermeture, récipient comprenant le bouchon de fermeture, ainsi que procédé de fabrication d'un bouchon de fermeture

Publications (1)

Publication Number Publication Date
EP4144662A1 true EP4144662A1 (fr) 2023-03-08

Family

ID=77666235

Family Applications (2)

Application Number Title Priority Date Filing Date
EP21195293.2A Withdrawn EP4144662A1 (fr) 2021-09-07 2021-09-07 Bouchon de fermeture, récipient comprenant le bouchon de fermeture, ainsi que procédé de fabrication d'un bouchon de fermeture
EP22773132.0A Pending EP4399162A1 (fr) 2021-09-07 2022-08-31 Bouchon de fermeture, contenant comprenant le bouchon de fermeture, et procédé de fabrication d'un bouchon de fermeture

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP22773132.0A Pending EP4399162A1 (fr) 2021-09-07 2022-08-31 Bouchon de fermeture, contenant comprenant le bouchon de fermeture, et procédé de fabrication d'un bouchon de fermeture

Country Status (4)

Country Link
EP (2) EP4144662A1 (fr)
CN (1) CN117980235A (fr)
MX (1) MX2024002870A (fr)
WO (1) WO2023036667A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2024200401A1 (fr) * 2023-03-28 2024-10-03 Alpla Werke Alwin Lehner Gmbh & Co. Kg Capuchon de fermeture composé de plastique

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3753510A (en) * 1971-03-12 1973-08-21 P Hedgewick Liquid proof safety package
US20170057139A1 (en) * 2015-08-26 2017-03-02 Andreas Stihl Ag & Co. Kg Closure and Injection Mold for Its Production
US20170369210A1 (en) * 2016-06-23 2017-12-28 Albea Services Perforator cap, in particular for a flexible tube
CH715914A1 (de) * 2019-03-11 2020-09-15 Alpla Werke Alwin Lehner Gmbh & Co Kg Verschlusskappe zum Verschliessen eines Behälters und Behälter mit einer solchen unverlierbar gehaltenen Verschlusskappe.

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USRE27156E (en) * 1968-04-19 1971-07-20 Hedgewick safety cap and container

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3753510A (en) * 1971-03-12 1973-08-21 P Hedgewick Liquid proof safety package
US20170057139A1 (en) * 2015-08-26 2017-03-02 Andreas Stihl Ag & Co. Kg Closure and Injection Mold for Its Production
US20170369210A1 (en) * 2016-06-23 2017-12-28 Albea Services Perforator cap, in particular for a flexible tube
CH715914A1 (de) * 2019-03-11 2020-09-15 Alpla Werke Alwin Lehner Gmbh & Co Kg Verschlusskappe zum Verschliessen eines Behälters und Behälter mit einer solchen unverlierbar gehaltenen Verschlusskappe.

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2024200401A1 (fr) * 2023-03-28 2024-10-03 Alpla Werke Alwin Lehner Gmbh & Co. Kg Capuchon de fermeture composé de plastique

Also Published As

Publication number Publication date
CN117980235A (zh) 2024-05-03
EP4399162A1 (fr) 2024-07-17
WO2023036667A1 (fr) 2023-03-16
MX2024002870A (es) 2024-03-22

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