EP4353615A1 - Stopfen mit abgeschrägten schlitzen - Google Patents

Stopfen mit abgeschrägten schlitzen Download PDF

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Publication number
EP4353615A1
EP4353615A1 EP23200600.7A EP23200600A EP4353615A1 EP 4353615 A1 EP4353615 A1 EP 4353615A1 EP 23200600 A EP23200600 A EP 23200600A EP 4353615 A1 EP4353615 A1 EP 4353615A1
Authority
EP
European Patent Office
Prior art keywords
cap
tamper
stopper
plug
slots
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.)
Pending
Application number
EP23200600.7A
Other languages
English (en)
French (fr)
Inventor
Jérôme Francoise
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.)
United Caps France SAS
Original Assignee
United Caps France SAS
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 United Caps France SAS filed Critical United Caps France SAS
Publication of EP4353615A1 publication Critical patent/EP4353615A1/de
Pending 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
    • B65D55/00—Accessories for container closures not otherwise provided for
    • B65D55/16—Devices preventing loss of removable closure members
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D1/00—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
    • B26D1/01—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work
    • B26D1/02—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a stationary cutting member
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D1/00—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
    • B26D1/0006—Cutting members therefor
    • B26D2001/0033—Cutting members therefor assembled from multiple blades
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D1/00—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
    • B26D1/0006—Cutting members therefor
    • B26D2001/006—Cutting members therefor the cutting blade having a special shape, e.g. a special outline, serrations
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D3/00—Cutting work characterised by the nature of the cut made; Apparatus therefor
    • B26D3/08—Making a superficial cut in the surface of the work without removal of material, e.g. scoring, incising
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
    • B26F2210/00—Perforating, punching, cutting-out, stamping-out, severing by means other than cutting of specific products
    • 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
    • B65D2251/10—Details of hinged closures
    • B65D2251/1008—Means for locking the closure in open position
    • 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
    • B65D2401/30—Tamper-ring remaining connected to closure after initial removal

Definitions

  • the present invention relates to an assembly comprising a container with a threaded neck and a plastic cap such as polypropylene or polyethylene intended to close this container.
  • a container with a threaded neck such as a bottle can be provided with a neck to which a cap is fixed by screwing.
  • the term container here designates any kind of container, without limitation of form or use.
  • the cap comprises in particular a body delimiting a space for receiving the neck of the bottle, and a thread capable of cooperating with the threaded neck to close the neck of the container.
  • the cap also includes a tamper-evident ring intended to engage with a collar collar.
  • the tamper-evident ring is notably connected to the body of the stopper by frangible bridges between which through separations extend.
  • the tamper-evident ring when opening the cap, the tamper-evident ring remains attached to the neck via the collar and is detached from the body by the breakage of the frangible bridges, thus informing a user that the cap has already been the subject of a first opening.
  • the invention aims to simplify the manufacture of inseparable caps while improving their solidity to meet European directives and the specifications that they provide.
  • the invention also relates to a method of manufacturing a stopper according to the preceding characteristics, the method using at least one blade and a mandrel, the at least one blade comprising a contact end having at least one wave-shaped complementary with the tongue and beveled zones configured to form the beveled profile of at least the first slots, the mandrel extending around an axis of rotation and comprising at least one groove which extends radially over the entirety of a periphery of the mandrel, the process comprising at least one step during which the plug is rotated by the mandrel around the axis of rotation against the contact end of the at least one blade such that the beveled areas of the blade form the first slots with a beveled profile and the wave forms the rounded tongue.
  • the invention also relates to an assembly comprising at least one container with a threaded neck and a cap according to any of the preceding characteristics, the neck of the container comprising at least one helical thread formed on an external face of said neck and capable of cooperating with the helical rib of the cap so as to close the container when said neck is housed in the space receiving the cap.
  • FIG. 1 illustrates a threaded neck 2 of a container 1 intended to cooperate with a cap so as to close an opening 6 of the neck 2 of said container 1.
  • the neck 2 of the container has a cylindrical shape around a longitudinal axis L and delimits the opening 6 through which a liquid can flow into or out of the container.
  • the neck 2 of the container comprises at least one helical thread 8 made on an external face 10 of said neck 2. More particularly, the at least one helical thread 8 projects from the external face 10 of the neck 2. In The rest of the description, we will call by intermediate portion 12, the portion of the neck 2 which carries the helical thread 8.
  • the neck 2 of the container comprises three helical threads 8.
  • the neck 2 of the container 1 also comprises a groove 14 delimited longitudinally on either side by a collar 16 and a collar 18.
  • a groove 14 delimited longitudinally on either side by a collar 16 and a collar 18.
  • the latter is arranged such that the collar 16 s extends longitudinally between the groove 14 and the intermediate portion 12 and such that said intermediate portion 12 extends from the free end 20 of the neck 2 to the collar 16.
  • the cap 4 is made of a plastic material such as polypropylene or polyethylene, preferably by injection into a mold.
  • the plug 4 extends around an axis of revolution R and has a substantially cylindrical shape.
  • the cap 4 comprises at least one body 22 of the cap 4 centered on the axis of revolution R, the body 22 of the cap 4 delimiting a receiving space 24 of the neck of the container. More particularly, the body 22 of the plug 4 comprises at least one peripheral skirt 26 having the shape of a right cylinder with respect to the axis of revolution R of the plug 4, and which extends from a periphery of a plate 28 oriented perpendicularly to the axis of revolution R of the cap 4. It is then understood that the plate 28 of the cap 4 is arranged to cover the opening of the neck of the container when said cap 4 is placed on said neck 2 of the container 1 of the figure 1 .
  • imprints 30 are made on an external face 32 of the peripheral skirt 26, radially opposite the receiving space 24, in order to allow better gripping of the body 22 of the plug 4 by a user when the latter wishes to open or close the cap 4.
  • the imprints 30 have an oblong shape projecting from the external face 32 of the peripheral skirt 26 and are extending along a plurality of straight lines at least partly parallel to the axis of revolution R of the plug 4.
  • the body 22 of the plug 4 also comprises at least one helical rib 34, visible at the figure 2 , which extends into the receiving space 24 delimited by the body 22. More precisely, the helical rib 34 is formed projecting from an internal face 36 of the peripheral skirt 26, opposite its external face 32. We then understand that the helical rib 34 is formed in such a way that it has a complementary shape with the helical thread 8 of the neck 2, mentioned previously in section figure 1 . Such complementarity in shape between the helical rib 34 and the helical thread 8 allows the cap 4 to be screwed and unscrewed by a rotational movement around its axis of revolution R, thus closing or clearing the opening of the neck of the container.
  • the body 22 of the plug 4 comprises three helical ribs 34 so as to be complementary to the three helical threads of the neck 2 mentioned previously.
  • the body 22 of the plug 4 comprises a tongue 38, particularly visible on the figure 2 And 3 , which extends axially opposite the plate 28.
  • the tongue 38 extends axially in the extension of the peripheral skirt 26 and opposite the plate 28.
  • the tongue 38 here has a substantially rounded shape with a free end edge 40.
  • the functional characteristics of the tongue will be discussed later in the remainder of the detailed description.
  • the cap 4 also comprises a tamper-evident ring 42 centered on the axis of revolution R of the cap 4.
  • the tamper-evident ring 42 is arranged in the extension of the peripheral skirt 26.
  • frangible bridges 44 then extend between the body 22 of the plug 4 and the tamper-evident ring 42 such that they connect them before a state of first opening of the plug 4. More precisely, the frangible bridges 44 extend between a free side 46 of the peripheral skirt 26 and the tamper-proof ring 42. The frangible bridges 44 are then configured to break definitively when the cap 4 is first opened.
  • At least one frangible bridge 44 can extend between said tongue 38 and the tamper-evident ring 42.
  • the peripheral skirt 26 of the body 22 of the cap 4 extends around the intermediate portion 12 of the neck 2 and the tamper-evident ring 42 extends in the groove 14 of said neck 2.
  • the tamper-evident ring 42 is enclosed longitudinally by the collar 16 and the collar 18 of the neck 2 of the container 1, such that it is held immobile in translation along the longitudinal axis L of the neck 2 of the container 1, in the groove 14.
  • the connection between the tamper evident ring 42 and body 22 of cap 4 via the frangible bridges 44 then also blocks said body 22 of cap 4 in longitudinal translation, when said cap 4 has not been opened for the first time.
  • the cap 4 comprises at least two connecting arms 48 each comprising a first end 50 connected to the tamper-evident ring 42 and a second end 52, opposite the first end 50, and connected to the body 22 of the cap 4.
  • the second end 52 of each of the connecting arms 48 then forms a hinge 52 between said connecting arm 48 and the body 22 of the plug 4.
  • the connecting arms 48 extend axially between the body 22 of the plug 4 and the tamper-evident ring 42 when the plug 4 is in the closed state as illustrated on the figures 2 to 5 . Even more precisely, the connecting arms 48 extend axially between the free side 46 of the peripheral skirt 26 and the tamper-proof ring 42. Furthermore, according to the example of the invention illustrated but in a non-limiting manner , the second end 52, forming the hinge 52, of each of the connecting arms 48 is connected to the tongue 38 of the body 22 of the plug 4 described previously.
  • the tamper-evident ring 42 comprises a clearance of material so as to accommodate the connecting arms 48 as well as the tongue 38 of the body 22 of the plug 4 which projects from the peripheral skirt 26 towards said tamper-evident ring 42.
  • the tamper-evident ring 42 is partially connected to the body 22 of the cap 4 via the frangible bridges 44, prior to a first opening of the cap 4, and partially to the body 22 of the cap 4 via the connecting arms 48, independently that cap 4 has been opened for the first time, as is visible on the Figure 6 .
  • the connecting arms 48 are each separated at least in part from the tamper-evident ring 42 and the body 22 of the plug 4 respectively by a first slot 56 and by a second slot 58. More particularly, each of the first slots 56 and the second slots 58 extend at least between the first end 50 and the second end 52 of their associated connecting arm 48. It is understood that the slots 56, 58 form through openings which follow the perimeter of the cap 4 and thus make it possible to physically dissociate the connecting arms 48 from the body 22 of the cap 4 and from the tamper-evident ring 42.
  • first slots 56 and the second slots 58 may comprise at least one bridge, not illustrated, extending between their connecting arm and respectively the tamper-evident ring and the cap body so as to connect them .
  • bridges are structurally identical to the frangible bridges 44 described previously and are intended to be broken when the cap is first opened.
  • the first slots 56 and the second slots 58 have a beveled profile respectively at the first ends 50 and at the second ends 52, forming the hinges 52, of each of the connecting arms 48, in a plane perpendicular to the axis of revolution R of the plug 4. More precisely, the beveled profile of each of the slots 56, 58 recedes towards an external periphery 62 of the plug 4, radially opposite the receiving space 24 of the body 22 of plug 4. In other words, a thickness P of the slots 56, 58, taken along one of the radial axes AR of the plug 4, decreases as one approaches the external periphery 62 of the plug 4, thus forming the beveled profile of said slots 56, 58.
  • each of the slots 56, 58 forms an angle ⁇ of between 10° and 80° with respect to the external periphery 62 of the plug 4.
  • the angle ⁇ is between 40° and 60° with respect to at the external periphery 62 of the cap 4.
  • the beveled profile of each of the slots 56, 58 forms an angle ⁇ of 45° relative to the external periphery 62 of the plug 4, the beveled profile extending, in this example of the invention, over 0.5mm around the axis of revolution R of the cap 4.
  • the beveled profile of the slots 56, 58 can form a rectilinear edge, that is to say extending along a straight line, or form a curved edge, that is to say curved .
  • Such characteristics of the slots 56, 58 and in particular their beveled profile ensure optimal solidity of the connecting arms 48 with the body 22 of the plug 4 and the tamper-evident ring 42 while improving the flexibility of the connecting arms 48 when of the use of the cap 4 by a consumer.
  • the connecting arms 48 have a radial dimension DR of at least 0.5mm and an axial dimension DA of at least 1.2mm.
  • a thickness of the connecting arms 48, along one of the radial axes AR of the plug 4 is advantageously at least 0.5mm and an axial height, along the axis of revolution R, is advantageously at least 1.2mm.
  • the connecting arms 48 visible at the Figure 3 have an elongation dimension DL taken between their first end 50 and their second end 52 forming the hinge 52, corresponding to a range between 7.35% to 11.5% of a perimeter of the cap 4.
  • Such sizing of the connecting arms 48 contributes to guaranteeing the solidity and flexibility of the connecting arms 48 when using the plug 4. Furthermore, the sizing of the connecting arms 48 advantageously makes it possible to guarantee axial movement of the plug 4. sufficient to remove said cap 4 from neck 2 and to maintain said cap 4 in the open position as visible at the Figure 6 .
  • the body 22 of the plug 4 is arranged in an inclined position relative to the tamper-evident ring 42. It is also understood that the plug 4 as shown in Figure 6 is in an open position complete to allow the pouring of a liquid through the neck without being hindered by the body of the cap.
  • the body 22 of the plug 4 is inclined at an angle ⁇ having a minimum degree of 120° relative to a plane perpendicular to the axis of revolution R of the plug 4.
  • the structural characteristics of the connecting arms 48 as described previously advantageously allow the latter to deform elastically without breaking to allow the pivoting of the body 22 of the plug 4 relative to the tamper-evident ring 42 according to the angle ⁇ .
  • the tongue 38 also makes it possible to block the cap 4 in the open position visible at the Figure 6 , cooperating with the helical thread 8 of the neck 2 of the container. More precisely, the free end edge 40 of the tongue 38 comes to rest with a lower face of the helical thread 8, turned towards the tamper-evident ring 42, so as to block the body 22 of the plug 4 in the pivoting position following the angle ⁇ of at least 120° relative to the tamper-evident ring 42.
  • Such an opening of the cap 4 visible at the Figure 6 is advantageous in that it allows optimal use of said cap 4 for a user.
  • the opening of the cap as visible on the Figure 6 is also advantageous in that it allows the user to pour a liquid into or out of the container without the cap body blocking the pouring zone.
  • the cap 4 comprises at least one elastic retaining strip 64 which extends from the free end edge 54 of the tamper-evident ring 42 and towards the receiving space 24 of the cap 4.
  • the retaining strip 64 is thus configured to house in the groove of the container neck and thus contributes, by means of contact zones bearing against the collar collar, to axially maintaining the tamper-evident ring 42 in the throat of the neck container. Furthermore, the retaining strip 64 is configured to exert a radial support pressure against a bottom of the groove, thus making it possible to slow down the rotation around the axis of revolution R of the cap 4, of the tamper-proof ring 42 relative to the body 22 of the cap 4 when opening said cap 4. It is allowed thus the rupture of the frangible bridges 44 by difference in speed of rotation between the body 22 of plug 4 and the tamper-evident ring 42.
  • a height H of the tamper-evident ring 42 taken along a straight line parallel to the axis of revolution R of the cap 4, between its free end edge 54 and the free end edge 40 of the tongue 38, the height H being at least 0.7mm, preferably equal to 1.2mm. It is understood that the height H is measured between an end point of the free end edge 40 furthest axially from the body 22 of the plug 4 along the axis of revolution R, and the free end edge 54 of the tamper-evident ring 42.
  • Such a height H ensures, among other things, maintaining the structural integrity of the tamper-evident ring 42 at the level of the tongue 38 and optionally a solidity of at least one frangible bridge 44 which can extend between the tamper-evident ring 42 and the tongue 38 of the body 22 of the stopper 4, during the manufacture of said stopper 4 which will now be described in relation to the figures 2 to 5 .
  • the method of manufacturing the cap as described above uses at least one mandrel 66 and at least one blade 68.
  • the mandrel 66 according to an example of the invention and visible at the Figure 7 , appears as a support on which the cap 4 fits after having been molded.
  • the mandrel 66 then has a substantially cylindrical shape around an axis of rotation Z.
  • an external diameter of the mandrel 66 is at least slightly less than an internal diameter of the plug so that said plug can fit onto said mandrel 66. It is also understood that, when the plug 4 is placed on the mandrel 66, the axis of rotation Z of the mandrel 66 and the axis of revolution R of the plug 4 are substantially coincident.
  • the mandrel 66 comprises at least a first groove 70 which extends around the mandrel 66 along the axis of rotation Z and over its entire periphery.
  • the at least one first groove 70 extends radially along the axis of rotation Z such that it is deep enough to receive part of the associated blade during the cutting operation.
  • the at least one groove extends radially such that the associated blade is capable of penetrating the cork sufficiently to cut it, without hitting the mandrel, so as to guarantee clean cutting of said cork.
  • the at least one first groove 70 extends over an axial distance AD1 along the axis of rotation Z of between 0.5mm and 1.5mm.
  • the first groove 70 appears in particular as a form of revolution such that its axial distance AD1 is constant over the entire mandrel.
  • tongue DAL we define an axial dimension of tongue DAL, visible at the Figure 3 , corresponding to an axial distance along the axis of revolution R of the plug 4, which extends between one of the first slots 56 and the free end edge 40 of said tongue 38. It is understood that here, the axial dimension of tongue DAL is taken between one of the first slots 56 and a point of the free end edge 40 of the tongue 38 furthest axially from the body 22 of plug 4.
  • the axial distance AD1 of the first groove 70 is greater than the axial dimension of the tongue DAL.
  • the at least one first groove 70 of said mandrel 66 is arranged radially facing the cutting zone of at least the first slots 56 and the tongue 38 of the plug 4.
  • the mandrel 66 according to the example of the invention comprises a second groove 72 which extends around the mandrel 66 along the axis of rotation Z and over its entire periphery.
  • the second groove 72 is in the form of a revolution such that it extends axially over a constant dimension around the mandrel.
  • first groove 70 and the second groove 72 are spaced axially from each other by a support surface 74. More particularly, the support surface 74 extends projecting from the first groove 70 and the second groove 72 of the mandrel 66 and axially between the latter along the Z axis.
  • the support surface 74 extends axially along the axis Z, over a dimension substantially equal to the axial dimension DA of the connecting arms 48 visible at the Figure 3 .
  • the support surface 74 is configured to support at least the connecting arms 48 of the cap 4 during the manufacturing process of said cap 4.
  • Such a support surface 74 makes it possible, among other things, to maintain the shape of the plug 4 during its cutting at the level of the first slots and the second slots.
  • the tamper-evident ring 42 of the cap 4 extends opposite at least the first groove 70, the second groove 72 and the bearing surface 74 of the mandrel 66 when it is fitted onto this last.
  • the configuration of the first groove 70 and the second groove 72 makes it possible to position the plug 4 on the mandrel 66 without requiring indexing of said plug 4 on said mandrel 66.
  • the grooves 70, 72 of the mandrel 66 extending over the entire perimeter of said mandrel 66 having a shape of revolution, and the first groove 70 having an axial distance AD1 at least greater than the axial dimension of tongue DAL visible at there Figure 3 , the first slots 56, the second slots 58 and the tongue 38 can be cut during the manufacturing process, independently of the angular position of the plug 4 on the mandrel 66.
  • the manufacturing process uses two blades 68 which are particularly visible at figures 7 to 9 .
  • the two blades 68 are superimposed one on the other, and such that they are arranged each facing one of the grooves 70, 72 of the mandrel 66 during the manufacturing process as visible in the figure 7 .
  • the first blade 68a then has a first contact end 78a having a profile cut to form the first slots, the frangible bridges and the shape of the tongue.
  • the cut profile of the first contact end 78a comprises at least one material recess 80 configured to form the frangible bridges. It is understood in particular that the material recess 80 corresponds to a radial material recess relative to the Z axis, such that the first blade 68a does not cut the plug in contact with the material recess 80.
  • the profile cut from the first contact end 78a also includes an axial deviation along the Z axis, so as to form a wave 81 configured to cut the rounded tongue as described above.
  • the rounded shape of the tongue ensures a clean cutting of the latter by the first blade 68a.
  • the second blade 68b has a second contact end 78b having a profile cut to form the second slots and the frangible bridges which connects the tamper-evident ring and the cap body.
  • the second contact end 78b comprises the material recesses 80 as described for the first blade 68a in order to form the frangible bridges which connect the stopper body to the tamper-evident ring.
  • the second contact end 78b of the second blade 68b also comprises a clearance 84 intended not to cut the plug and corresponding to the area between the hinges 52 of the connecting arms 48, visible at the Figure 3 .
  • the clearance 84 makes it possible to preserve the material of the plug which extends axially between the tongue and the body of the plug.
  • each of the first blade 68a and the second blade 68b comprises beveled zones 82 arranged in such a way that they are configured to form the beveled profile of each of the slots.
  • the first blade 68a comprises an attack end 82a and a cutting end 82b which each have a beveled zone 82 to form the beveled profile of the first slots.
  • the second blade 68b comprises two central beveled zones 82c, 82d which extend on either side of the clearance 84, so as to form the beveled profile of the second slots as described previously.
  • the contact ends 78a, 78b of each of the blades 68a, 68b may also have a convex or concave shape.
  • the manufacturing process comprises at least one step during which the cap 4 is molded, for example by injection.
  • the molding of the cap 4 makes it possible, among other things, to form the body 22 of the cap 4, the tamper-evident ring 42, the connecting arms 48 and the retaining strip 64. Furthermore, at the end of the molding step, the entire body 22 of the cap 4, the tamper-evident ring 42, the connecting arms 48 and the retaining strip 64 are in one piece and integrally secured to each other. Furthermore, at the end of the molding step, the retaining strip 64 extends in the extension of the tamper-evident ring 42.
  • the manufacturing process then comprises a second step during which the plug 4 is rotated around the axis of rotation Z by the mandrel 66 against the blades 68 described previously, such that the first blade 68a and the second blade 68b pass through the plug 4 to emerge respectively into the first groove 70 and the second groove 72.
  • the first blade 68a and the second blade 68b thus respectively form the first slots 56 and the second slots 58 mentioned above.
  • the rolling of the plug 4 against the blades 68 makes it possible to form the beveled profile of each of the first slots 56 and the second slots 58.
  • the method comprises at least a third step during which the retaining strip 64 is turned over, for example by means of a needle, in order to lodge in the volume delimited by the plug 4 and towards the receiving space 24 of the neck 2, as described previously.
  • the height H between the free end edge 54 of the tamper-evident ring 42 and the free end edge 40 of the tongue 38 of at least 0.7mm in that it allows to ensure retention without deformation of the tamper-evident ring 42 and the tongue 38 relative to each other when the retaining strip 64 is turned over.
  • the process as just described can be implemented within a cap production line, comprising a plurality of mandrels intended to receive molded caps and to rotate said caps against the blades such as described previously.
  • the invention as it has just been described thus makes it possible to propose a cap that is simple to manufacture and reliable in terms of its resistance when it is opened and also reliable in terms of maintaining the different elements composing it in relation to each other.
  • the cap according to the invention thus complies with the various European directives in force while facilitating its use for a consumer and its design by a manufacturer.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Closures For Containers (AREA)
EP23200600.7A 2022-10-13 2023-09-28 Stopfen mit abgeschrägten schlitzen Pending EP4353615A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR2210556A FR3140870A1 (fr) 2022-10-13 2022-10-13 Bouchon a fentes biseautees

Publications (1)

Publication Number Publication Date
EP4353615A1 true EP4353615A1 (de) 2024-04-17

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP23200600.7A Pending EP4353615A1 (de) 2022-10-13 2023-09-28 Stopfen mit abgeschrägten schlitzen

Country Status (2)

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EP (1) EP4353615A1 (de)
FR (1) FR3140870A1 (de)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1151932A1 (de) * 2000-05-03 2001-11-07 Mouldtec Kunststoff GmbH Kunststoff-Verschlusskappe, insbesondere Schraubkappe, mit Garantieband
JP5341729B2 (ja) * 2009-11-26 2013-11-13 日本クロージャー株式会社 合成樹脂製容器蓋
WO2021063776A1 (de) * 2019-10-03 2021-04-08 Packsys Global Ag Vorrichtung und verfahren zum herstellen eines sicherungsrings an einer verschlusskappe für einen behälter
US20220258925A1 (en) * 2019-07-22 2022-08-18 Sacmi Cooperativa Meccanici Imola Societa' Cooperativa A cap for closing a container, a combination of a cap and a neck
WO2023073449A1 (en) * 2021-10-28 2023-05-04 Novembal Usa Inc. Plastic tethered stopper for a container

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1151932A1 (de) * 2000-05-03 2001-11-07 Mouldtec Kunststoff GmbH Kunststoff-Verschlusskappe, insbesondere Schraubkappe, mit Garantieband
JP5341729B2 (ja) * 2009-11-26 2013-11-13 日本クロージャー株式会社 合成樹脂製容器蓋
US20220258925A1 (en) * 2019-07-22 2022-08-18 Sacmi Cooperativa Meccanici Imola Societa' Cooperativa A cap for closing a container, a combination of a cap and a neck
WO2021063776A1 (de) * 2019-10-03 2021-04-08 Packsys Global Ag Vorrichtung und verfahren zum herstellen eines sicherungsrings an einer verschlusskappe für einen behälter
WO2023073449A1 (en) * 2021-10-28 2023-05-04 Novembal Usa Inc. Plastic tethered stopper for a container

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Publication number Publication date
FR3140870A1 (fr) 2024-04-19

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