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EP2504249B1 - Verschluss mit einer schwächungslinie - Google Patents

Verschluss mit einer schwächungslinie Download PDF

Info

Publication number
EP2504249B1
EP2504249B1 EP10805255.6A EP10805255A EP2504249B1 EP 2504249 B1 EP2504249 B1 EP 2504249B1 EP 10805255 A EP10805255 A EP 10805255A EP 2504249 B1 EP2504249 B1 EP 2504249B1
Authority
EP
European Patent Office
Prior art keywords
skirt
removable
neck
strand
break
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
EP10805255.6A
Other languages
English (en)
French (fr)
Other versions
EP2504249A1 (de
Inventor
Grégory ANTIER
Fabien Flamand
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.)
Tetra Laval Holdings and Finance SA
Original Assignee
Tetra Laval Holdings and Finance SA
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 FR0958426A external-priority patent/FR2953202B1/fr
Priority claimed from FR1052033A external-priority patent/FR2957587B1/fr
Application filed by Tetra Laval Holdings and Finance SA filed Critical Tetra Laval Holdings and Finance SA
Publication of EP2504249A1 publication Critical patent/EP2504249A1/de
Application granted granted Critical
Publication of EP2504249B1 publication Critical patent/EP2504249B1/de
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
    • 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
    • B65D41/32—Caps 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
    • B65D41/34—Threaded or like caps or cap-like covers provided with tamper elements formed in, or attached to, the closure skirt
    • B65D41/3442—Threaded 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
    • 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
    • B65D55/00—Accessories for container closures not otherwise provided for
    • B65D55/16—Devices preventing loss of removable closure members
    • 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
    • B65D2401/00—Tamper-indicating means
    • B65D2401/15—Tearable part of the closure
    • B65D2401/25—Non-metallic tear-off strips

Definitions

  • the present invention relates to a cap for a container neck.
  • the invention relates, in general, to plugs comprising a skirt which surrounds the neck of a container and a lower part of which, when it is considered that this neck extends vertically with its upwardly directed mouth, is intended to to remain around the neck after the first opening of the cap, possibly in the form of a tamper-evident band.
  • the remainder of the skirt that is to say its upper part, is provided removable relative to the neck, while being initially connected to the lower non-removable portion of the skirt by a weakening line capable of being broken when the cap is first opened.
  • the weakening line serves as a witness of this first opening, for the attention of users.
  • this kind of weakening lines is made by cutting or molding.
  • An example of this type of weakening line plug is provided by WO-A-99/58411 .
  • the nature of the removable connection between the upper skirt portion and the container neck is indifferent, so that the invention also aims, for example, the so-called “snap" caps, it that is to say the plugs able to be clipped around the neck, that the caps screwed.
  • GB-A-2,116,155 which may be regarded as the state of the art closest to the stopper defined in the appended claim 1, discloses a cap whose skirt includes both a removable part, able to be screwed and unscrewed around a container neck, and a non-removable portion, adapted to be held permanently around this container neck by being rotatably connected to this neck for complementarity of forms.
  • the removable skirt portion and the non-removable skirt portion are, before the first opening of the cap, connected by a weakening line which breaks during this first opening.
  • the non-removable skirt portion is provided with two weakening segments which are diametrically opposed to each other: between the line of weakness and each of these weakening segments is defined a strand which extends along the periphery of the skirt and whose current portion is non-breakably bonded to the removable skirt portion while each of the peripheral ends of each strand is connected to the non-removable skirt portion by a frangible bridge.
  • each breakable bridge resists breaking while the line of weakness is already broken, then breaks essentially by shearing by the unscrewing of the removable skirt portion vis-à-vis the non-removable skirt portion, fixedly retained in rotation.
  • the cap of GB-A-2,116,155 provides a clear indication as to its first opening, but requires to apply a very important torque staring to shear the peripheral ends of each of the aforementioned strands, this shear to induce, by camming, an axial descent of the part of non-removable skirt along the container neck in the direction opposite to the end of this neck.
  • the object of the present invention is to improve the performance of the control means of the first opening of a plug.
  • the invention relates to a cap for a container neck, as defined in claim 1.
  • One of the basic ideas of the invention is to seek, by means of arrangements that are easy to implement and advantageously resistant to the initial placement of the stopper around the container neck, to cause, without undue effort, the part of the user, one or more local plastic deformations around the skirt during the first opening of the cap.
  • This or these plastic deformations have the advantage of being irreversible, which leaves visible traces around the skirt, easily identifiable by the user.
  • the invention provides, on the one hand, to maintain a first "traditional" weakening line, with the difference that it is associated with one or more more resistant frangible bridges. at the break that the remainder of this line and, secondly, to achieve at least a second line of weakening, less extensive than the first following the periphery of the skirt, so that this second line is designated here by the "weakening segment” expression: this or each weakening segment is located, when it is considered that the axis of the skirt is vertical with its non-removable part directed downwards, vertically above, as well as laterally on either side of one or more of the above-mentioned frangible bridges.
  • the weakening line breaks while the aforementioned frangible bridge or bridges resist without being able to be driven upwards by the part of removable skirt due to the retention of the non-removable skirt portion around the neck of the container.
  • the upward movement of the removable skirt portion causes the plastic deformation of the strand interposed between the line of weakening and the weakening segment, more precisely the deformation of at least one the two lateral arms of this strand, arranged on either side of the associated frangible bridge, by relative distance of the edges of the weakening segment.
  • the opening of the stopper passes into a second phase, in which the frangible bridge or bridges in turn break, thus making it possible to completely disengage this portion of the removable skirt. to the non-removable skirt portion retained around the neck.
  • the cap is closed, that is to say if the removable skirt portion is repositioned around the container neck in its initial position before the first opening, it is impossible to reposition as in the origin or the strands because of their irreversible plastic deformation. This or these strands are found at least partially projecting vis-à-vis the rest of the skirt, which provides a clear indication, so easy and quick to observe for the user.
  • the invention provides, on the one hand, to maintain a first "traditional" weakening line, with the difference that, at the axial level of this weakening line, the skirt includes one or a plurality of non-breakable portions, which will not break during the breaking of the line of weakness and, secondly, to achieve at least a second weakening line, less extensive than the first following the periphery of the skirt so that this second line is referred to herein as the "weakening segment".
  • this or each weakening segment is located, when it is considered that the axis of the skirt is vertical, vertically above the or one of the aforementioned non-frangible skirt portions, in s' extending laterally on either side of this non-breakable skirt portion.
  • the strand of material, located vertically between the line of weakness and the weakening segment has a running portion which extends along the aforementioned non-breakable skirt portion, while the peripheral ends of this strand are frangibly connected, by two ad hoc opposed bridges, to the removable skirt portion, wherein the weakening segment is delimited.
  • the weakening line in a first phase, breaks while, at the same time, the aforementioned frangible bridges are sized. to resist, while each undergoing a plastic deformation stress related to the relative drive between the removable skirt portion and the non-removable skirt portion retained around the neck.
  • the current portion of the aforementioned strand remains firmly attached to the non-removable skirt portion, wherein the weakening segment is not delimited, thanks to the non-breakable skirt portion mentioned above.
  • the opening of the stopper passes into a second phase in which the frangible bridges located at the peripheral ends of the strand in turn break, thus making it possible to completely disengage the portion skirt removable vis-à-vis the non-removable skirt portion retained around the neck.
  • the current portion of the strand imparts a crenellated shape to the non-removable skirt portion, to which this current portion is non-frangibly bonded.
  • the strand or strands are non-frangibly bonded over their entire running portion to the non-removable skirt portion, wherein the corresponding weakening segment n is not delimited, provides the weakening line and the weakening segment satisfactory overall strength, used during the manipulation of the plug before its first opening, especially when it is placed around the neck of the container.
  • the plug according to the invention can be handled reliably and efficiently before its first opening, and then provide, during this first opening, an indication open, without increasing the opening effort to be applied by the user.
  • the clear opening indication provided by the invention is of major interest when the non-removable portion of the skirt remains completely immobile with respect to the neck after breaking any connection with the removable skirt portion. This is particularly the case for plugs whose non-removable skirt portion has a large axial dimension, inducing immobilization interference with the neck.
  • the weakening line and the weakening segment of the plug according to the invention can be made both by cutting and by molding.
  • the realization of the weakening segment is simple and fast, in particular when the removable skirt portion has a non-negligible axial dimension.
  • a plug 1 adapted to be removably attached to a neck 2 of a container.
  • the plug 1 considered here by way of illustration is a plug fixed on the neck by screwing.
  • the neck 2 is integral with the rest of the container, especially when the latter is a glass or plastic bottle as shown on the drawing.
  • figure 1 or adapted to be permanently attached to a wall of the container, at an opening through this wall.
  • the plug 1 and the neck 2 have respective generally tubular shapes, whose central longitudinal axes are substantially coincident, under the reference XX, when the cap is screwed onto the neck.
  • the rest of the description is oriented by considering that the terms “superior” and “high” correspond to a direction generally parallel to the axis XX and from the body of the container to its neck 2, that is to say a direction directed towards the upper part of the figures 1 , 2 and 5 , while the terms “lower” and “lower” correspond to an opposite direction.
  • the neck 2 comprises a generally cylindrical body 4 with a circular base of axis XX. At its upper end, this body 4 defines a rim 3 at which the liquid in the container is intended to be poured. As shown in the right part of the figure 4 , on the outer face of the body 4, the neck 2 comprises, successively from its rim 3, a thread 5 and a boss 6, which both extend radially outwardly from the body.
  • the plug 1 considered screwed on the neck 2, is open at its lower end and closed at its upper end by a bottom wall 10, at the outer periphery of which extends axially downwardly a tubular skirt 12 centered on the XX axis and circular base.
  • the cap here advantageously comprises a lip 14 which extends axially downwards from the bottom wall 10, centrally on the axis XX, inside the outer skirt 12.
  • the bottom wall 10 extends above and across this neck, while the skirt 12 externally surrounds the body 4 and the lip 14 is pressed sealingly against the inner face of the body.
  • other arrangements to seal the closure of the neck 2 by the plug 1 are conceivable, for example using a reported seal.
  • the skirt 12 is provided with an internal thread 16 which extends radially inwardly of the main wall of the skirt, in a manner complementary to the thread 5 of the neck 2.
  • the cooperation of the threads 5 and 16 makes it possible to screw and unscrew the skirt 12 around the collar.
  • the outer face of this skirt may be provided with elongated ribs 18 which extend parallel to the axis X-X. These ribs 18 allow the user to grip more easily the plug 1.
  • ribs 18 allow the user to grip more easily the plug 1.
  • other embodiments, not shown, are possible to facilitate the handling of the plug 1 by the user.
  • the skirt 12 is adapted to separate into two distinct parts, namely an upper portion 12 1 , integral with the bottom wall 10, and a lower portion 12 2 initially connected to the part upper 12 1 at a peripheral weakening line 20 located axially in the part current of the skirt.
  • the portion of skirt 12 1 is intended to be completely disengaged from the neck 2, so that this portion 12 1 internally carries the screw thread 16 and externally the ribs 18.
  • the skirt portion 12 2 is, for its part, to remain around the neck 2.
  • this portion 12 2 is internally provided with rods 22 which extend radially inwardly projecting from the inner surface of the skirt 12 and which are situated generally in the same perpendicular plane to the axis XX, being distributed over the entire periphery of the skirt.
  • rods 22 which extend radially inwardly projecting from the inner surface of the skirt 12 and which are situated generally in the same perpendicular plane to the axis XX, being distributed over the entire periphery of the skirt.
  • the attenuation line 20 is, in the embodiment considered here, in the form of a peripheral slot 24, which is inscribed generally in a plane perpendicular to the axis XX and which crosses radially through and through the wall of the skirt 12.
  • the slot 24 does not extend over the entire periphery of the skirt but, on the contrary, is interrupted by a frangible bridge 26 connecting, before rupture, the skirt portions 12 1 and 12 2 .
  • this frangible bridge 26 is located, along the axis XX, at the same level as the weakening line 20.
  • This frangible bridge 26 extends around the axis XX, on an angle ⁇ 26 which, in practice , is worth a few degrees.
  • the skirt 12 further comprises a peripheral weakening segment 28 distinct from the weakening line 20.
  • this attenuation segment 28 is, in the exemplary embodiment considered here, in the form of a peripheral slot 30 which is inscribed in a plane perpendicular to the axis XX and which crosses through the wall from side to side of the removable skirt portion 12 1 .
  • a strand of material 32 consisting of a peripheral fragment of the wall of the skirt 12 and belonging to the removable skirt portion 12 1 , is interposed in the direction of the axis XX between the weakening line 20 and the weakening segment 28.
  • the attenuation segment 28 is dimensioned and positioned specifically with respect to the breakable bridge 26. More precisely, the weakening segment 28 extends, around the axis XX, on an angle ⁇ 28 of which the value is greater, preferably strictly greater than that of the angle ⁇ 26 of the frangible bridge 26. In addition, the angular positioning, around the axis XX, of the weakening segment 28 is provided so that its two peripheral ends 28A and 28B are located, along the periphery of the skirt 12, at least perpendicular to the vertical ends of the frangible bridge 26, or preferably on either side of the frangible bridge 26.
  • the strand 32 includes a running portion 32 1 connected, over its entire peripheral dimension, to the non-removable skirt portion 12 2 by the breakable bridge 26, and two lateral arms 32 2 and 32 3 which are respectively disjoint, both of the non-removable skirt portion 12 2 , due to the slot 24, and the remainder of the removable skirt portion 12 1 due to the slot 30, except at the peripheral ends 32A and 32B of the strand 32, which are integral with the rest of the skirt portion 12 1 non-breakable manner.
  • the frangible bridge 26 and the 28 are not centered on each other, but, on the contrary, the frangible bridge 26 is situated, along the periphery of the skirt, closer to the end 28A than to the end 28B of the This means that the peripheral dimension of the lateral arm 32 2 is strictly smaller than that of the lateral arm 32 3 of the strand 32.
  • the skirt portion 12 1 When the user first opens the cap 1 by rotating the skirt portion 12 1 about the axis XX to unscrew it from the neck 2, the skirt portion 12 2 is retained, in the direction of the XX axis, around this neck by the boss 6 while the skirt portion 12 1 is spaced from the skirt portion 12 2 upwards.
  • the weakening line 20 and the weakening segment 28 are solicited jointly, as shown progressively on the Figures 5 to 7 .
  • the edges of the slot 24 move away from each other in the direction of the axis XX while the breakable bridge 26 resists breaking, so that this bridge immobilizes relative to the skirt portion 12 2 , the current portion 32 1 of the strand 32.
  • the lateral arms 32 2 and 32 3 of this strand deform along their length, thanks to the free relative spacing of the edges of the slot 24 as well as that of the edges of the slot 30.
  • the lateral arms 32 2 and 32 3 of the strand 32 thus extend over their entire length relative to the remainder of the skirt portion 12 1 and relative to the skirt portion 12 2 : these arms 32 2 and 32 3 are then plastically deformed, progressively passing from a substantially horizontal extended configuration to an extended configuration inclined relative to the horizontal, as clearly visible by comparison of the figures 1 , 5 and 6 .
  • the shorter arm 32 2 undergoes a higher strain stress density than the longer arm 32 3 , leading to a greater plastic deformation for the arm 32 2 .
  • the cross section of the arm 32 2 tends to decrease, by stretching the material.
  • the first opening phase ends in favor of a second opening phase, during which the frangible bridge 26 breaks, as shown in FIG. figure 7 .
  • the skirt portions 12 1 and 12 2 are then completely separated from one another and the unscrewing of the skirt portion 12 1 can be continued until complete disengagement of the threads 5 and 16.
  • the rupture of the frangible bridge 26 may as well leave intact the current portion 32 1 of the strand 32, as shown in FIG. figure 7 , that lead to the breakage of this current portion 32 1 , thus totally separating the lateral arms 32 2 and 32 3 from one another.
  • the appearance of the cap is that shown on the figure 8 even if the skirt portions 12 1 and 12 2 are substantially substantially joined, as they were before the first opening of the cap 1, it is impossible to reposition the strand 32 in its original configuration, due to its plastic deformation, in particular the plastic deformation of its arms 32 2 and 32 3 , especially its shortest arm 32 2 . As a result, a significant portion of the strand 32 hangs in the void, protruding from the outer face of the skirt 12.
  • a portion of the body 4 of the container neck 2 is directly observable through the space that initially occupied the arms 32 2 and 32 3 , in particular the arm 32 2 : by choosing contrasting colors for the skirt 12 and the body 4 of the collar 2, there is a better visual indication that the stopper 1 has already been opened a first time.
  • the plug 1 in particular of plastic material, it is possible to use either a molding and cutting process, or an exclusively molding process.
  • cutting blades are used to perform, preferably concomitantly, the weakening line 20 and the weakening segment 28, driving with respect to each other. the skirt 12 and these cutting blades in rotation about the axis XX.
  • the skirt 12 is molded by integrating the presence of the weakening line 20 and the weakening segment 28.
  • FIG. 9 to 11 three variants of embodiment of the plug 1, respectively referenced 100, 200 and 300 are represented.
  • the plugs 100, 200 and 300 are distinguished from the plug 1 only by the positioning and / or the profile of their weakening segments, respectively referenced 128. , 228 and 328.
  • the components of the plugs 100, 200 and 300, which are identical to those of the plug 1, have the same alphanumeric references.
  • the weakening segment 128 is centered, along the periphery of the skirt 12, on the breakable bridge 26.
  • this frangible bridge 26 is located, along the periphery of the skirt, substantially in the middle of the weakening segment 128
  • the lateral arms 132 2 and 132 3 of the strand 132 interposed between the weakening line 20 and the weakening segment 128 then have the same peripheral dimension.
  • the plastic deformations undergone by the arms 132 2 and 132 3 are homogeneous along the periphery of the skirt 12.
  • the weakening segments 228 and 328 do not extend rectilinearly along the periphery of the skirt 12, such as the weakening segments 28 and 128, but the weakening segment 228 forms a V-shaped pattern pointing towards the weakening line 20 and the weakening segment 328 extends in a curved manner, bulging towards the weakening line 20.
  • the lateral arms 232 2 and 232 3 , 332 2 and 332 3 of each strand 232, 332 interposed between the weakening line 20 and, respectively, the weakening segment 228 and the weakening segment 328 have a thickness, in the direction of the axis XX, smaller at their end.
  • a plug 1000 adapted to be removably attached to a neck 2 of a container.
  • the plug 1000 considered here by way of illustration is a plug fixed on the neck by screwing.
  • the neck 2 is integral with the rest of the container, especially when the latter is a glass or plastic bottle as shown on the drawing.
  • figure 12 or adapted to be permanently attached to a wall of the container, at an opening through this wall.
  • the plug 1000 and the neck 2 have respective generally tubular shapes, whose central longitudinal axes are substantially coincident, under the reference XX, when the cap is screwed onto the neck.
  • the following description is oriented by considering that the terms “upper” and “top” correspond to a direction generally parallel to the axis XX and from the body of the container to its neck 2, that is to say say a direction directed towards the upper part of figures 12 , 13 and 16 , while the terms “lower” and “lower” correspond to an opposite direction.
  • the neck 2 comprises a generally cylindrical body 4 with a circular base of axis XX. At its upper end, this body 4 defines a rim 3 at which the liquid in the container is intended to be poured. As shown in the right part of the figure 15 on the outer face of the body 4, the collar 2 comprises, successively from its rim 3, a thread 5 and a boss 6, both of which extend radially outwardly from the body.
  • the plug 1000 is open at its lower end and closed at its upper end by a bottom wall 1010, at the outer periphery of which extends axially downwardly a tubular skirt 1012 centered on the XX axis and circular base.
  • the plug here advantageously comprises a lip 1014 which extends axially downwards from the bottom wall 1010, centrally on the axis XX, inside the outer skirt 1012.
  • the bottom wall 1010 extends above and across the neck, while the skirt 1012 externally surrounds the body 4 and the lip 1014 is pressed sealingly against the inner face of the body.
  • other arrangements to seal the closure of the neck 2 by the plug 1000 are possible, for example using a reported seal.
  • the skirt 1012 is provided with an internal thread 1016 which extends radially inwardly of the main wall of the skirt, complementary to the thread 5 of the neck 2.
  • the cooperation of the threads 5 and 1016 makes it possible to screw and unscrew the skirt 1012 around the collar.
  • the outer face of this skirt may be provided with elongate ribs 1018 which extend parallel to the X-X axis. These ribs 1018 allow the user to grip more easily the stopper 1000. Of course, other embodiments, not shown, are possible to facilitate the grip of the stopper 1000 by the user.
  • the skirt 1012 is adapted to separate into two distinct parts, namely an upper part 1012 1 , integral with the bottom wall 1010, and a lower part 1012 2 initially connected to the part upper 1012 1 at a weakening peripheral line 1020 located axially in the current portion of the skirt.
  • the skirt portion 1012 1 is intended to be completely disengaged from the neck 2, so that this portion 1012 1 internally carries the screw thread 1016 and externally the ribs 1018.
  • the skirt portion 1012 2 is, for its part, intended to remain around the neck 2.
  • this portion 1012 2 is internally provided with rods 1022 which extend radially inwardly projecting from the inner surface of the skirt 1012 and which are situated generally in the same perpendicular plane to the axis XX, being distributed over the entire periphery of the skirt.
  • rods 1022 which extend radially inwardly projecting from the inner surface of the skirt 1012 and which are situated generally in the same perpendicular plane to the axis XX, being distributed over the entire periphery of the skirt.
  • the weakening line 1020 is, in the exemplary embodiment considered here, in the form of a peripheral slot 1024, which is inscribed generally in a plane perpendicular to the axis XX and which crosses radially through and through the wall of the skirt 1012.
  • the slot 1024 extends over a large periphery of the skirt, but not on its totality: a non-breakable peripheral portion 1025 of the skirt 1012 interrupts the slot 1024 along the periphery of the skirt.
  • this portion of non-breakable skirt 1025 has the same structure, in particular the same thickness, as the rest of the skirt 1012, at the axial level of which the slot 1024 is made.
  • the portion of non-breakable skirt 1025 extends, around the axis XX, on an angle ⁇ 1025 which, in practice, is worth a few degrees.
  • the slot 1024 is interrupted by several frangible bridges 1026 connecting the skirt portions 1012 1 and 1012 2 to each other before the first opening of the cap.
  • These frangible bridges 1026 are distributed substantially evenly along the slot 1024, following the periphery of the skirt 1012.
  • the skirt 1012 further comprises a peripheral weakening segment 1028 distinct from the weakening line 1020.
  • this weakening segment 1028 is, in the exemplary embodiment considered here, in the form of a peripheral slot 1030 which is inscribed in a plane perpendicular to the axis XX and which crosses through the wall from one side to the other of the removable skirt portion 1012 1 .
  • a strand 1032 consisting of an elongate peripheral fragment of the wall of the skirt 1012 and substantially belonging to the non-removable skirt portion 1012 2 , is interposed in the direction of the axis XX between the weakening line 1020 and the weakening segment 1028.
  • the weakening segment 1028 is sized and positioned specifically with respect to the non-breakable skirt portion 1025 located axially of the weakening line 1020. More specifically, the weakening segment 1028 is extends, about the axis XX, on an angle ⁇ 1028 whose value is greater, preferably strictly greater than that of the angle ⁇ 1025 of the non-breakable skirt portion 1025.
  • the weakening segment 1028 is provided so that its two peripheral ends 1028A and 1028B are located, along the periphery of the skirt 1012, to less vertical plumb with the peripheral ends of the non-breakable skirt portion 1025, or preferably on either side of this non-breakable skirt portion 1025.
  • the strand 1032 includes a running portion 1032 1 connected, over its entire peripheral dimension, to the non-removable skirt portion 1012 2 by the non-breakable skirt portion 1025, being integral, without interruption of the skirt wall 1012, with this non-removable skirt portion 1012 2 .
  • the strand 1032 includes two opposite peripheral ends 1032 2 and 1032 3 which, on the one hand, along the periphery of the skirt 1012, are connected to the removable skirt portion 1012 1 by respective frangible bridges 1034, and which on the other hand, in the direction of the axis XX, are respectively disjoined, at the same time, from the remainder of the removable skirt portion 1012 1 , due to the slit 1030, and from the remainder of the non skirt portion removable 1012 2 because of the slot 1024.
  • frangible bridges 1034 are designed, with adequate sizing, to have a breaking strength strictly greater than that of frangible bridges 1026, as explained in detail below.
  • the weakening segment 1028 and the non-breakable skirt portion 1025 are centered on one another. other around the XX axis. That is to say that the peripheral ends 1032 2 and 1032 3 of the strand 1032 have respective peripheral dimensions equal to each other.
  • the skirt portion 1012 1 When the user first opens the stopper 1000 by rotating the skirt portion 1012 1 about the axis XX to unscrew it from the neck 2, the skirt portion 1012 2 is retained, in the direction of the XX axis, the boss 6 while the skirt portion 1012 1 is spaced from the skirt portion 1012 2 upwards.
  • the weakening line 1020 and the weakening segment 1028 are solicited jointly, as shown progressively on the Figures 16 to 18 .
  • the frangible bridges 1026 are broken while the frangible bridges 1034 deform plastically without breaking.
  • the stresses applied to these bridges 1026 and to these bridges 1034 are not essentially of the same nature: the bridges 1026 are essentially constrained shear, which, in view of their design, quickly leads to breakage when sufficient torque is applied between the removable skirt portion 1012 1 and non removable 1012 2 , while the bridges 1034 work essentially in tension- compression, which, in view of their design, leads to their progressive plastic deformation as and skirt portions 1012 1 and 1012 2 move away from each other in the direction of the axis XX .
  • the effort required for the progressive plastic deformation of the bridges 1034 is limited, even negligible, compared to the overall force that it must produce to rotate the removable skirt portion 1012 1 .
  • the peripheral dimension of the ends 1032 2 and 1032 3 of the strand 1032 is limited compared to that of the whole of the strand 1032.
  • the peripheral extent of each strand end 1032 2 , 1032 3 is less than 10% of the total peripheral extent of the strand 1032, which is to say that the peripheral extent of the non-breakable skirt portion 1025 is at least 80% of the extent device of the weakening segment 1028.
  • the bridges 104 are designed to work in tension-compression and thus resist breaking more than the bridges 1026 working in shear, presents another interest: indeed, during the handling of the stopper 1000 before its first opening, in particular during its manufacture, as well as during its initial placement, in particular by screwing, around the container neck 2, the bridges 1034 reinforce the breaking strength of the weakening line 1020, which increases the mechanical resistance of all of this line of weakening and the weakening segment 1028, thus avoiding that line and this segment begin to break, which would alter their performance of subsequent indication of the first opening of the plug.
  • the bridges 1034 make it possible, in a way, to protect the integrity of the frangible bridges 1026 during the manufacture and the initial installation of the plug 1000.
  • the first opening phase ends in favor of a second opening phase, during which the bridges 1034 break, as shown in FIG. figure 18 .
  • the skirt portions 1012 1 and 1012 2 are then completely separated from one another and the unscrewing of the skirt portion 1012 1 can be continued until the threads 5 and 1016 are fully disengaged.
  • the bridges 1034 can be used to the manner of hinges for tilting the skirt portion 1012 1 relative to the skirt portion 1012 2 , it being understood that, in view of their frangible nature, the bridges 1034 are then easily broken by hand by the user, particularly in view of resealing the neck 2, repositioning by screwing the skirt portion 1012 1 around this neck.
  • the skirt portions 1012 1 and 1012 2 can no longer be placed in a substantially contiguous manner, as they were before the first opening of the stopper 1000, in particular because of the interposition of one or both deformed ends 1032 2 and 1032 3 of the strand 1032, as shown in FIG. figure 19 .
  • a portion of the body 4 of the neck 2 is then directly observable, on the one hand, directly above the weakening segment 1028, and on the other hand, between the skirt portions 1012 1 and 1012 2 that are not joined. : by choosing contrasting colors for the skirt 1012 and the body 4 of the neck 2, there is a better visual indication that the plug 1000 has already been opened a first time.
  • the stopper 1000 in particular made of plastic material, it is possible to use either a molding and then a cutting process, or an exclusively molding process.
  • cutting blades are used to perform, preferably concomitantly, the weakening line 1020, with the frangible bridges 1026, and the weakening segment 1028, driving the one with respect to the other the skirt 1012 and these cutting blades in rotation around the XX axis.
  • the skirt 1012 is molded by integrating the presence of the weakening line 1020 and the weakening segment 28.

Landscapes

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

Claims (16)

  1. Verschluss (1; 100; 200; 300; 1000) für einen Hals eines Behälters (2), eine rohrförmige Schürze (12; 1012) aufweisend, die geeignet ist, den Hals zu umgeben und die sowohl mit einer Schwächungsumfangslinie (20; 1020), die ausgebildet ist, bei der ersten Öffnung des Verschlusses zu brechen und die vor diesem ersten Öffnen gemäß der Richtung der Achse (X-X) der Schürze ein nicht lösbares Teil (122; 10122) der Schürze, das mit Mitteln (22; 1022) zum dauerhaften Rückhalten um den Hals ausgestattet ist, mit einem lösbaren Teil (121; 10121) der Schürze verbindet, das mit Mitteln (16; 1016) zur lösbaren Festlegung an dem Hals ausgestattet ist, als auch mit mindestens einem Schwächungssegment (18; 128; 228; 328; 1028) versehen ist, das in deutlicher Weise von der Schwächungslinie (20; 1020) abgegrenzt ist, derart, dass zwischen der Schwächungslinie und dem Schwächungssegment gemäß der Richtung der Achse (X-X) der Schürze ein Strang (32; 132; 232; 1032) gebildet wird, der sich gemäß dem Umfang der Schürze erstreckt, dadurch gekennzeichnet, dass das Schwächungssegment (28; 128; 228; 328; 1028) in dem lösbaren Schürzenteil (121, 10121) begrenzt ist und dass entweder jedes der zwei Umfangsenden (32A, 32B) des Stranges (32) in nicht brechbarer Weise mit dem lösbaren Schürzenteil (121) verbunden ist, während der laufende Teil (321) des Stranges mit dem nichtlösbaren Schürzenteil (122) durch einen zerbrechbaren Steg (26) verbunden ist, oder der laufende Teil (10321) des Stranges (1032) in nicht brechbarer Weise mit dem nichtlösbaren Schürzenteil (10122) verbunden ist, während jedes der zwei Umfangsenden (10321, 10322) des Stranges mit dem lösbaren Schürzenteil (10121) durch einen zerbrechbaren Steg (1034) verbunden ist, wobei der zerbrechbare Steg (26; 1034) in beiden Fällen angepasst ist, bei dem ersten Öffnen des Verschlusses aufeinanderfolgend dem Bruch zu widerstehen, während die Schwächungslinie schon zerbrochen ist, dann nach einer plastischen Verformung des Stranges zu brechen und somit den lösbaren Schürzenteil und den nichtlösbaren Schürzenteil voneinander zu trennen.
  2. Verschluss nach Anspruch 1, dadurch gekennzeichnet, dass der zerbrechbare Steg (26; 1034) außerdem angepasst ist, den Widerstand gegen den Bruch der Schwächungslinie (20; 1020) bei Handhabung des Verschlusses (1; 1000) vor seinem ersten Öffnen, insbesondere bei seiner Instellungbringung um den Hals des Behälters (2) zu verstärken.
  3. Verschluss nach einem der Ansprüche 1 oder 2, dadurch gekennzeichnet, dass jedes der zwei Umfangsenden (28A, 28B; 1028A, 1028B) des Schwächungssegments (28; 1028) gemäß dem Umfang der Schürze (12; 1012) außerhalb des Umfangsbereichs der Schürze liegt, in dem der laufende Teil (321; 10321) des Stranges (32; 1032) entweder in brechbarer Weise oder in nicht brechbarer Weise mit dem nichtlösbaren Schürzenteil (102; 10122) verbunden ist.
  4. Verschluss nach Anspruch 3, dadurch gekennzeichnet, dass die Umfangserstreckung des Umfangsbereichs der Schürze (12; 1012), in dem der laufende Teil (321; 10321) des Stranges (32; 1032) entweder in brechbarer oder in nicht brechbarer Weise mit dem nichtlösbaren Schürzenteil (122; 10122) verbunden ist, mindestens 80% der Umfangserstreckung des Schwächungssegments (28; 1028) beträgt.
  5. Verschluss nach einem beliebigen der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass in dem Fall, bei dem der zerbrechbare Steg (26) zwischen dem laufenden Teil (321) des Stranges (32) und dem nichtlösbaren Schürzenteil (122) vorgesehen ist, der zerbrechbare Steg (26) gemäß dem Umfang der Schürze (12) näher an einem (28A) der zwei Umfangsenden (28A, 28B) des Schwächungssegments (28) als an dem anderen Umfangsende (28B) liegt.
  6. Verschluss nach einem beliebigen der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass in dem Fall, bei dem der zerbrechbare Steg (26) zwischen dem laufenden Teil (321) des Stranges (32) und dem nichtlösbaren Schürzenteil (122) vorgesehen ist, der zerbrechbare Steg (26) gemäß dem Umfang der Schürze (12) im Wesentlichen in der Mitte des Schwächungssegments (128; 228; 328) liegt.
  7. Verschluss nach einem beliebigen der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass in dem Fall, bei dem der zerbrechbare Steg (26) zwischen dem laufenden Teil (321) des Stranges (32) und dem nichtlösbaren Schürzenteil (122) vorgesehen ist, der zerbrechbare Steg (26) in derselben axialen Höhe wie die Schwächungslinie (20) liegt.
  8. Verschluss nach einem beliebigen der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Schwächungslinie (20; 1020) zerbrechbare Brücken (1026) einschließt, die gemäß dem Umfang der Schürze (12; 1012) verteilt sind, die vor dem ersten Öffnen des Verschlusses (1; 1000) den lösbaren Schürzenteil (121; 10121) und den nichtlösbaren Schürzenteil (122; 10122) miteinander verbinden und die angepasst sind, beim ersten Öffnen des Verschlusses alle zu zerbrechen, bevor der oder die zerbrechbaren Stege (26; 1034) zerbrechen.
  9. Verschluss nach Anspruch 8, dadurch gekennzeichnet, dass die Mittel zur lösbaren Festlegung am Hals (2) ein Gewinde (16; 1016) zum Auf- und Abschrauben um diesen Hals umfassen, und dass, wenn dieses Gewinde für die Anbringung des Verschlusses (1; 1000) zum ersten Mal aufgeschraubt und für das erste Öffnen des Verschlusses um den Hals herum abgeschraubt wird, der oder die zerbrechbaren Stege (26; 1034) ausgebildet sind, im Wesentlichen auf Zug-Druck zu arbeiten, während die zerbrechbaren Brücken (1026) ausgebildet sind, im Wesentlichen auf Scherung zu arbeiten.
  10. Verschluss nach einem beliebigen der vorhergehenden Ansprüche, gekennzeichnet durch mehrere Schwächungselemente (28; 1028), die gemäß dem Umfang der Schürze (12; 1012) verteilt sind.
  11. Verschluss nach einem beliebigen der Ansprüche 1 bis 9, gekennzeichnet durch eine einzige Schwächungslinie (20; 1020) und durch ein einziges Schwächungssegment (28; 1028).
  12. Verschluss nach einem beliebigen der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Mittel (22; 1022) zum dauerhaften Rückhalten angepasst sind, axial gegen einen Vorsprung (6) des Halses (2) bei dem ersten Öffnen des Verschlusses (1; 100; 200; 300; 1000) anzustoßen.
  13. Verschluss nach einem beliebigen der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass das oder jedes Schwächungssegment (28; 128; 1028) sich in geradliniger Weise gemäß dem Umfang der Schürze (12; 1012) erstreckt.
  14. Verschluss nach einem beliebigen der Ansprüche 1 bis 12, dadurch gekennzeichnet, dass das oder jedes Schwächungssegment (228) gemäß dem Umfang der Schürze (12) ein V bildet, das zu der Schwächungslinie (20) gerichtet ist.
  15. Verschluss nach einem beliebigen der Ansprüche 1 bis 12, dadurch gekennzeichnet, dass das Schwächungssegment (328) gemäß dem Umfang der Schürze (12) gekrümmt ist, wobei es zu der Schwächungslinie (20) gewölbt ist.
  16. Verschluss nach einem beliebigen der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass das oder jedes Schwächungssegment (28; 128; 228; 328; 1028) gemäß der Richtung der Achse (X-X) zwischen der Schwächungslinie (20; 1020) und Greifmitteln (18) der Außenfläche des lösbaren Schürzenteils (121; 10121) liegt.
EP10805255.6A 2009-11-27 2010-11-19 Verschluss mit einer schwächungslinie Not-in-force EP2504249B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR0958426A FR2953202B1 (fr) 2009-11-27 2009-11-27 Bouchon avec ligne d'affaiblissement
FR1052033A FR2957587B1 (fr) 2010-03-22 2010-03-22 Bouchon avec ligne d'affaiblissement
PCT/FR2010/052462 WO2011064489A1 (fr) 2009-11-27 2010-11-19 Bouchon avec ligne d'affaiblissement

Publications (2)

Publication Number Publication Date
EP2504249A1 EP2504249A1 (de) 2012-10-03
EP2504249B1 true EP2504249B1 (de) 2015-03-18

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US (1) US20130001185A1 (de)
EP (1) EP2504249B1 (de)
AU (1) AU2010322960A1 (de)
MX (1) MX2012005807A (de)
NZ (1) NZ600144A (de)
WO (1) WO2011064489A1 (de)
ZA (1) ZA201203724B (de)

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US20130001185A1 (en) 2013-01-03
WO2011064489A1 (fr) 2011-06-03
AU2010322960A1 (en) 2012-06-14
EP2504249A1 (de) 2012-10-03
ZA201203724B (en) 2013-08-28
MX2012005807A (es) 2012-06-12
NZ600144A (en) 2014-07-25

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