EP0592506B1 - Fermeture en matiere plastique pour recipients comportant un element indicateur de tentative d'ouverture - Google Patents

Fermeture en matiere plastique pour recipients comportant un element indicateur de tentative d'ouverture Download PDF

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Publication number
EP0592506B1
EP0592506B1 EP92913766A EP92913766A EP0592506B1 EP 0592506 B1 EP0592506 B1 EP 0592506B1 EP 92913766 A EP92913766 A EP 92913766A EP 92913766 A EP92913766 A EP 92913766A EP 0592506 B1 EP0592506 B1 EP 0592506B1
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EP
European Patent Office
Prior art keywords
closure
exterior
interior
centring device
outer case
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.)
Expired - Lifetime
Application number
EP92913766A
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German (de)
English (en)
Other versions
EP0592506B2 (fr
EP0592506A1 (fr
Inventor
Günter Spatz
Wolfhard Schwarz
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.)
Alcoa Deutschland GmbH Verpackungswerke
Original Assignee
Alcoa Deutschland GmbH Verpackungswerke
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
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Priority claimed from DE4121618A external-priority patent/DE4121618A1/de
Priority claimed from DE4121619A external-priority patent/DE4121619C2/de
Application filed by Alcoa Deutschland GmbH Verpackungswerke filed Critical Alcoa Deutschland GmbH Verpackungswerke
Publication of EP0592506A1 publication Critical patent/EP0592506A1/fr
Application granted granted Critical
Publication of EP0592506B1 publication Critical patent/EP0592506B1/fr
Publication of EP0592506B2 publication Critical patent/EP0592506B2/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D41/00—Caps, e.g. crown caps or crown seals, i.e. members having parts arranged for engagement with the external periphery of a neck or wall defining a pouring opening or discharge aperture; Protective cap-like covers for closure members, e.g. decorative covers of metal foil or paper
    • B65D41/32—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
    • B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D7/01—Means for holding or positioning work
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
    • B26F1/00—Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor
    • B26F1/18—Perforating by slitting, i.e. forming cuts closed at their ends without removal of material
    • 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
    • B65D41/3423—Threaded or like caps or cap-like covers provided with tamper elements formed in, or attached to, the closure skirt with flexible tabs, or elements rotated from a non-engaging to an engaging position, formed on the tamper element or in the closure skirt
    • 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
    • B65D41/3423—Threaded or like caps or cap-like covers provided with tamper elements formed in, or attached to, the closure skirt with flexible tabs, or elements rotated from a non-engaging to an engaging position, formed on the tamper element or in the closure skirt
    • B65D41/3428—Threaded or like caps or cap-like covers provided with tamper elements formed in, or attached to, the closure skirt with flexible tabs, or elements rotated from a non-engaging to an engaging position, formed on the tamper element or in the closure skirt the tamper element being integrally connected to the closure by means of bridges
    • 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
    • B26F2210/04—Making plastic pilferproof screw caps by cutting a tamper ring
    • 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
    • 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
    • B65D2401/35—Vertical or axial lines of weakness

Definitions

  • the invention relates to a method for producing a plastic closure according to the preamble of claim 1 and a device for producing a plastic closure according to the preamble of claim 4 and finally a plastic closure for containers with the features mentioned in the preamble of claim 18 (known from US-A-4,666,053).
  • closures Numerous plastic closures are known (DE G 87 09 690.0; US Pat. No. 4,666,053) which are used to close any container.
  • the closures are provided with a guarantee ring, which is intended to indicate the integrity of the sealed container. In a first attempt to open the guarantee ring is blown open, so that a consumer can easily see that the container is no longer originally sealed.
  • the stated object is achieved by a method for producing a plastic closure for containers, which has the features mentioned in claim 1.
  • the method is characterized in that the closure is mechanically detected in a certain position, which is dependent on pre-features on the closure before the cutting process.
  • a circumferential horizontal cut is made mechanically at a predetermined location on the lower hem of the casing, which cuts through the wall of the casing completely or almost entirely.
  • at least one vertical incision perpendicular to the circumferential direction of the guarantee area is cut by machine in order to separate individual segments from one another. The vertical incision is assigned to the specific shape features at a specified distance.
  • the vertical incision is not produced by a weakening of the material in the guarantee area, which can be produced, for example, by an injection molding process, but that cuts are actually made in the guarantee area so that a defined weakening of the material is predetermined.
  • This can be determined much more precisely than with a spraying process.
  • the vertical incisions are therefore not produced by a spraying process but by a subsequent cutting process, so that the holding forces in the area of the vertical incision can be predicted very precisely. moreover, by the exact positioning of the vertical incisions the blasting forces arising there are precisely predetermined. In this way, tampering with the container can be excluded with a high degree of certainty without damaging the guarantee ring.
  • An embodiment of the method is particularly preferred in which the vertical incisions are cut into the wall of the guarantee area or the guarantee ring depending on the arrangement of the retaining webs.
  • the retaining bars remain intact when the container is opened for the first time.
  • the end regions of the ring segments held by the holding webs are maximally deflected both in the axial and in the radial direction, so that the greatest force of expansion occurs here. Because the vertical incisions are arranged here, it is very likely that they will be blown open.
  • the stated object is also achieved by the creation of a device which serves to produce a plastic closure with a guarantee ring for containers and which has the features mentioned in claim 4.
  • the device is characterized by a centering device, which detects and holds the closure positioned in dependence on its shape characteristics, while the closure is brought into engagement with the cutting device.
  • a device is particularly preferred, the centering device of which has both an outer centering device and an inner centering device, the former sensing features on the outer surface and the latter sensing shape on the inner surface of the closure.
  • the centering device of which has both an outer centering device and an inner centering device, the former sensing features on the outer surface and the latter sensing shape on the inner surface of the closure.
  • a device is particularly preferred which is characterized in that the inner centering device is designed such that the inner contours of the closure can only be tapped after the outer contours have been detected.
  • the double scanning of shape features on the outside and then on the inside of the closure results in a particularly secure positioning of the closure before the vertical incisions are made in the wall of the guarantee ring.
  • the closure is characterized by three ring segments, retaining bars and vertical incisions.
  • the latter are at equal distances from the holding webs, as seen in the circumferential direction, and are subsequently cut into the wall of the guarantee area, depending on the position of the holding webs.
  • An exemplary embodiment of a closure is particularly preferred, which is characterized in that the position of the vertical incisions is selected as a function of the arrangement of the holding webs which hold the ring segments which arise when they burst open on the jacket of the closure.
  • the vertical incisions are placed in an area of the guarantee ring which is deflected to the maximum extent when opened for the first time, both in the axial and in the radial direction. This ensures that the vertical cuts are blown open.
  • An embodiment of the closure in which the vertical incisions are bridged by webs is particularly preferred. This prevents the vertical incisions from being damaged after the closure has been manufactured during its storage or transport, but also when it is first put on, so that a consumer may be wrongly tampering with the container must close. This increases the security of tampering even further.
  • the closure described below can be used universally. It is preferably used to close bottles that are provided with a screw thread on the outside below their mouth area and also have a projection that interacts with corresponding barbs on the inner surface of the guarantee ring.
  • Figure 1 shows a cross section through a closure 1 before it is applied to a container to be closed.
  • the closure has a closure mirror 3, which is followed by an all-round closed jacket 5.
  • a warranty area which is designed here as a guarantee ring 9 and is connected to the rest of the jacket by means of tear-off webs 11, the tear-off webs spanning a predetermined breaking line 13, which is produced by a horizontally running cut made in the wall of the jacket 5 is.
  • the predetermined breaking line 13 is also spanned by a retaining web 15, which is practically over the the entire amount of the guarantee ring 9.
  • the tear-off webs 11 and the holding web 15 are formed by material strips which are applied to the inner surface of the jacket and run in the longitudinal direction of the closure. It can be seen from FIG. 1 that the tear-off webs are designed to be substantially narrower than the holding web, which is assigned to a ring segment which is created by the safety ring 9 being opened.
  • a seal 17 is provided on the underside of the closure mirror, which is prevented from moving relative to the closure mirror 3 or the closure 1 by retaining cams 19 protruding into it.
  • a plurality of webs 21, which rise from the inner surface of the jacket, are provided, which hold the seal 17 in the intended location.
  • threads 23 can be seen, which mesh with a corresponding external thread on the outside of the container.
  • ribs 25 are provided which extend in the axial direction and increase the grip of the closure 1.
  • At least one bridging web 31 remains in each case, which forms a connection between the end regions of the ring segments 33 separated by the vertical incisions 29.
  • the bridging webs 31 can be formed in that, when the vertical incisions 29 are made, a knife is provided with a groove which leaves an area of the wall 27 of the guarantee ring 9 intact. It is also possible for a radially inwardly offset web to be applied to the inner surface of the guarantee ring 9 in the region of the vertical incisions, which, like the tear-off webs and the holding web 15, remains intact during a cutting process with a defined depth.
  • protrusions 37 run obliquely downwards, which are provided on their upper side with stiffening ribs 39 which, starting from the front side 41 of the protrusions 37, slope down in a direction towards the inner surface 35 of the guarantee ring 9 and in one Pass the distance in front of this inner surface into the surface of the projections 37.
  • the front surface of the stiffening ribs 39 forms a common stop surface with the front surface of the projections 37.
  • the projections 37 are designed in such a way that they arise at a distance from a holding web 15 from the inner surface 35 of the guarantee ring and, on their side facing the holding web, slope away at an angle Side edges 43 are provided.
  • the side edges 45 provided on the opposite side of the projections form a right angle with the inner surface 35 of the guarantee ring 9. The distance between these side edges 45 and a vertical incision 29 lying directly next to them is considerably smaller than that of the adjacent holding web 15.
  • FIG. 2 shows a top view of a guarantee ring 9 cut off along the line II-II, which is shown in FIG. 1.
  • the cut-off tear-off webs 11 and 11/1 and 11/2 can be seen from the plan view according to FIG. 2, and the section through the holding webs 15 can also be seen.
  • the top view shows that in the embodiment shown here, a guarantee ring of three Ring segments 33, which are each held by a holding web 15.
  • V-shaped material recesses 49 can be seen, in the bottom of which the vertical incisions 29 are made.
  • a material weakening predetermined by the manufacturing process is weakened by the targeted incision 29 in a precisely predetermined manner.
  • the grooves 47 can be seen in the outer surface of the guarantee ring 9, which are arranged exactly where the retaining webs 15 are arranged on the inner surface 35 of the guarantee ring 9.
  • the width of the grooves 47 is chosen to be larger than the width of the holding webs, which are arranged centrally in relation to the groove.
  • the tear-off webs 11 and the holding webs 15 consist of material areas which are offset radially inwards so that they remain practically intact in a defined horizontal section through the wall 27 of the guarantee ring 9.
  • the closure 1 or its guarantee ring 9 is provided with a plurality of shaped elements which are arranged on the outer or on the inner surface of the guarantee ring 9.
  • a plurality of shaped elements which are arranged on the outer or on the inner surface of the guarantee ring 9.
  • an alignment of the closure can be ensured during the introduction of the vertical incisions 29.
  • the projections 37 or their side edges 45 and 43 can be used here.
  • the position of the holding webs 15 on the inner surface 35 of the guarantee ring 9 can also be used for the exact alignment of the closure.
  • the grooves 47 or V-shaped recesses 49 provided on the outer surface of the guarantee ring 9 can be taken into account for the exact positioning of the closure for making the vertical incisions 29.
  • protrusions or depressions can also be provided on the outer surface of the casing 5 of the closure 1 for its positioning.
  • FIGS. 1 and 2 The device for producing the plastic closure shown in FIGS. 1 and 2 will be explained with reference to the sectional illustration in FIG. 3.
  • the tool 50 has a housing 51 which can be coupled to a drive which sets the housing 51 in rotational and translational movement.
  • the tool 50 can be rotated about the rotational or longitudinal axis 53.
  • a translational movement is carried out along this axis.
  • the housing 51 is preferably cylindrical, in particular circular cylindrical. It is provided with a through hole which serves to receive an inner centering device 55.
  • a holder 57 for an external centering 59 is introduced into a suitable recess.
  • the inner centering device 55 has a guide sleeve 61 which is introduced into the through hole 51.
  • the guide sleeve 61 can be displaced in the axial direction within the housing 51 against the force of a spring element 63 designed as a helical spring.
  • the helical spring is supported on corresponding projections both on the guide sleeve 61 and in the through bore of the housing 51.
  • a groove 65 made in the inner wall of the housing 51 and a spring 67 extending from the guide sleeve 61 prevent the two elements from rotating relative to one another .
  • a fixing device 65 ' In the interior of the guide sleeve 61, a fixing device 65 ' is provided which has a pressure ram 67' penetrating the inner centering device 55 and an abutment 69 which is anchored in the interior of the guide sleeve 61, for example by a screw connection.
  • a helical spring 71 is supported in the interior of the abutment 69 and, by means of a resilient force, pushes the pressure ram 67 'out of the end face of the inner centering device 55.
  • the stamp is held by a suitable bearing device 73 so that it is already held by a small counterforce during a rotational movement of the tool 50 and does not rotate with it.
  • the end of the pressure plunger located inside the tool 50 is held by a bearing 75 which interacts with the helical spring 71 and which in turn is equipped with a bearing 77 in order to ensure decoupling of the rotational movement of the tool 50.
  • the bearing device 73 is provided with an outer sleeve which is held against rotation in the guide sleeve 61 by the interaction of tongue and groove.
  • a shaping element 79 is provided on the front side of the inner centering device 55 on the right in FIG. 3, the outer contour of which is adapted to the inner contour of a closure to be detected, which is not shown here.
  • the outer contour of the molded element 79 is designed such that, for example, the retaining webs 15 of the closure shown in FIGS. 1 and 2 are received by a corresponding groove 81 which is arranged on the outer surface of the molded element 79.
  • the shaped element 79 is interchangeable, so that several differently designed closures can be gripped with the tool 50.
  • the external centering device 59 has a scanning element 85 which is elastically displaceable in the direction of the central axis 53 against the force of a spring element 83 and which comprises a sensing pin 87. This scans the outer surface of the closure and is designed so that it fits into the groove 47 provided in this outer surface.
  • a closure as shown with reference to FIGS. 1 and 2, is fed to the tool 50, the closure mirror 3 facing away from the end face of the tool, so that the pressure ram 67 ′ approaches the interior of the closure 1 when the tool 50 approaches engages and comes to rest on the inner surface of the closure mirror 3.
  • the feeler pin 87 of the outer centering device 59 now engages with the outer contour of the closure 1 until the feeler pin 87 engages in the groove 47 provided on the outer surface.
  • the holder of the closure is designed so that the closure now rotates synchronously with the tool 50 within its holder.
  • the guide sleeve 61 is now displaced to the right against the force of the helical spring 63 in the direction of the axis of rotation of the tool 53, so that the inner centering device 55 or its shaped element 79 moves into the interior of the closure. Due to the fixed assignment between the outer centering device 59 and the inner centering device 55, the inner centering device can engage in the inner contour of the closure without further readjustment.
  • the groove 81 on the shaped element 79 is in register with the retaining web 15 of a closure.
  • three such grooves 81 are provided on the outer surface of the molding 79 in this embodiment, so that when the inner centering 55 is inserted into the interior of the closure 1 the grooves 81 capture the retaining webs 15.
  • the inner centering is now advanced so far that the end face of the molded element 79 lowers to the bottom of the closure and this is held securely.
  • the projections 37 are folded inwards so that they are pivoted obliquely upwards in the direction of the inside of the closure mirror 3.
  • the closure 1 holds securely on the shaped element 79 of the inner centering device 55.
  • the outer centering moves up in order to release the outer or outer surface of the closure for the cutting process.
  • the outer surface of the molding 79 is designed so that it serves as an abutment for the cutting device in both the horizontal and vertical cuts.
  • the closure 1 due to its orientation on the inner centering device 55, can be fed to the cutting device in a predetermined position so that it subsequently makes the vertical incisions 29 in the wall 27 of the guarantee ring 9.
  • the drive of the tool 50 is designed so that it can be brought to the knife of the cutting device in a precise orientation.
  • the inner centering device or its shaped element 79 can be inserted into the interior of the closure with the help of the feeler pin 87 after the outer contour has been detected the orientation of the closure is retained.
  • the inner centering device 55 In the end position, in which the inner centering device 55 is completely extended by advancing the guide sleeve 61, the inner centering projects beyond both the end face of the pressure plunger and the feeler pin of the outer centering device 59, so that there is no longer any fear of the closure itself being displaced by the tool itself . Moreover, the feed movement of the inner centering device 55 ensures that the cutting device does not come into engagement with the outer centering tool when the horizontal cut is made to produce the predetermined breaking line 13 or when the longitudinal incisions 29 are made in the longitudinal direction. This prevents damage to both the cutting device and the tool 50.
  • a knife with a continuous cutting edge can also be used if, on the inner surface 35 of the guarantee ring 9, similar to the tear-off webs 11 and the holding webs 15, radially inwardly displaced material areas are provided, which are not damaged or at least damaged during the cutting process with a defined depth remain essentially uncut.
  • the tool 50 can be introduced into a machining star, to which the closures to be machined are fed in a known manner.
  • the manufacturing process and the device can be used regardless of which outer or inner contours are used for scanning when the vertical incisions are made in the closure. It is only necessary that the relative arrangement of the scanned contours or shape features to the position of the vertical incisions to be introduced is known, so that the merging of tool 50 and cutting device, which is not shown here, can be carried out accordingly so that the vertical incisions in the Desired, predeterminable position can be introduced. For example, they can be placed on the end regions of two adjacent ring segments 33, so that these end regions are held by the tear-off webs 11/1 and 11/2, the cut of the vertical incisions 29 is preferably introduced into the bottom of the V-shaped recess 49. In this way, relatively little material can be cut, so that the service life of the knives is significantly increased.
  • the vertical incisions 29 are arranged in the immediate vicinity between the side edges 45 of the projections 37 that drop perpendicularly to the inner surface 35, where when the opening is first opened Closure the maximum force is introduced into the guarantee ring. Even if the vertical incisions through the bridging webs 31 are given a certain strength, it is ensured that the guarantee ring 9 of the closure 1 is opened when it is opened for the first time.
  • the barbed projections 37 engage under the aforementioned projection on the outside of the container and lead to axial and radial expansion forces on the guarantee ring, so that the latter is blown open.
  • the retaining webs lie in the pivot and pivot point of the ring segments 33 and remain intact when the guarantee ring is opened. They are designed so firmly that they keep the opened ring segments in their pivoted position so that the consumer can easily see manipulations on the closure.
  • the external centering can be dispensed with.
  • the inner centering device 55 is moved against the closure fixed by a holder until the shaped element 79 engages in the given inner contours of the closure and holds it securely.
  • a vertical incision can subsequently be made in a plastic closure, which is produced, for example, in a plastic injection molding or compression molding process, at a precisely predeterminable point.
  • the positioning of the vertical incision depends on the shape features attached to the inside and / or outside of the closure, which can be scanned using a suitable device.
  • the vertical incision When making the vertical incision, it is very possible to provide only a guarantee area that does not extend over the entire circumferential line at the lower hem of the jacket, but is, for example, assigned to an arc-shaped circumferential area that has an opening angle of 60 ° to 240 °, preferably of 180 ° or 120 °.
  • the vertical incision is preferably placed in the middle of such a guarantee area, that is to say in an area which is subjected to a maximum axial and radial displacement when the closure is opened for the first time. On this ensures that the vertical incision is blown open the first time it is opened, so that manipulations on the closure can be easily recognized by consumers.
  • the end areas of such a guarantee area are firmly connected to the rest of the jacket. In this case, there is no need for holding bars which hold the segments after the vertical cut has been opened. Rather, the segments are firmly connected to the rest of the closure via their end regions and cannot be lost.
  • closures can also be implemented, which also have two guarantee areas, which when opened for the first time are broken open into segments which in turn are held by retaining webs.
  • closures can also be implemented, which also have two guarantee areas, which when opened for the first time are broken open into segments which in turn are held by retaining webs.
  • the introduction of the vertical incisions can ultimately be independent of the special design of the one used for the positioning Shape features take place.
  • the exact arrangement of the vertical incisions can be adhered to in any case, the shape features being able to be arranged on the inside and / or on the outside surface of the closure.
  • the horizontal cut which extends over a circumferential area or along the entire circumference and through which the guarantee area or a guarantee ring is produced, can be made in an independent, independent process step during their manufacture.
  • completely separate cutting devices can be used for making the two cuts (horizontal cut or vertical cut), so that the requirements for the cutting device can be relatively low and it can be produced inexpensively.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Closures For Containers (AREA)
  • Laminated Bodies (AREA)
  • Details Of Connecting Devices For Male And Female Coupling (AREA)
  • Networks Using Active Elements (AREA)
  • Ultra Sonic Daignosis Equipment (AREA)
  • Materials For Medical Uses (AREA)
  • Prostheses (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)

Claims (18)

  1. Procédé de fabrication d'une fermeture en matière plastique (1) pour récipients, équipée d'un panneau de fermeture (3) prolongé par une enveloppe (5) dont la zone marginale (7) est une zone de garantie comportant au moins une entaille verticale (29) réalisée au cours d'une opération de coupe faisant suite à la fabrication de la fermeture,
    caractérisé en ce que
    - la fermeture est saisie par une machine, dans une position définie par des éléments caractéristiques de moulage que présente la fermeture avant l'opération de coupe effectuée sur cette fermeture,
    - pour créer la zone de garantie de la fermeture, la machine réalise, vers le bord inférieur de l'enveloppe et à la périphérie de celle-ci une entaille horizontale traversant entièrement ou presque entièrement l'épaisseur de la paroi de l'enveloppe,
    - on réalise à la machine, dans la zone de garantie, au moins une entaille verticale perpendiculaire à la direction périphérique de la zone de garantie, de manière à créer des segments individuels,
    - l'entaille verticale est prévue à une certaine distance des éléments caractéristiques de moulage.
  2. Procédé selon la revendication 1,
    caractérisé en ce qu'
    on choisit comme éléments caractéristiques de moulage définissant la position de l'entaille verticale, des barrettes de maintien et/ou des saillies ou des creux portés par la face interne et/ou externe de l'enveloppe de la fermeture.
  3. Procédé selon la revendication 2,
    caractérisé en ce que
    la fermeture est positionnée d'abord en fonction des positions des saillies ou des creux existant à la surface externe de l'enveloppe et c'est ensuite que l'orientation de cette fermeture a lieu en fonction de la barrette de maintien faisant saillie sur la face interne.
  4. Dispositif de fabrication d'une fermeture de récipient, réalisée en matière plastique et comportant un panneau de fermeture prolongé par une enveloppe dont la zone marginale est une zone de garantie comportant une entaille verticale,
    caractérisé en ce qu' il comporte un dispositif de centrage (55, 59) qui saisit et maintient en position la fermeture (1) pendant qu'elle exécute un mouvement relatif de rotation en fonction des éléments caractéristiques de moulage (15) prévus sur la face interne ou externe, tandis que la fermeture, selon son positionnement est amenée en prise avec un dispositif de coupe.
  5. Dispositif selon la revendication 4,
    caractérisé en ce que
    le dispositif de centrage comprend un dispositif (59) de centrage externe équipé d'un système de palpation externe (87) détectant les éléments caractéristiques de moulage situés sur la face externe de la fermeture (1) et/ou un dispositif (55) de centrage interne équipe d'un système de palpation interne (79) détectant les éléments caractéristiques de moulage situés sur la face interne de la fermeture (1).
  6. Dispositif selon la revendication 5,
    caractérisé en ce qu'
    au moins le dispositif de centrage externe (55) peut tourner par rapport à la fermeture (1), le dispositif de centrage (55, 59) ayant son axe de rotation en coïncidence avec l'axe médian de la fermeture et pouvant coulisser en va et vient le long de cet axe, de sorte que le dispositif de centrage externe (59) du dispositif (50), qui peut avantageusement se déplacer par flexion élastique selon la direction de l'axe de rotation (53) du dispositif (50), peut venir en prise avec les éléments caractéristiques de moulage (47) situés sur la face externe de la fermeture (1).
  7. Dispositif selon une des revendications 4 à 6,
    caractérisé en ce que
    le dispositif de centrage (55, 59) est conçu de manière que la surface interne de la fermeture (1) puisse venir en prise avec la surface externe du dispostif.
  8. Dispositif selon la revendication 7,
    caractérisé en ce que
    le dispositif de centrage externe (59) dépasse le dispositif de centrage interne (55) en direction de la fermeture (1) à explorer et que ces dispositifs de centrage peuvent coulisser l'un par rapport à l'autre, selon la direction de l'axe de rotation (53).
  9. Dispositif selon une des revendications 4 à 7,
    caractérisé en ce qu'
    il comprend un dispositif de verrouillage (65, 67) empêchant le déplacement relatif des dispositifs de centrage externe (59) et interne (55).
  10. Dispositif selon une des revendications 4 à 9,
    caractérisé en ce qu'
    il comprend un dispositif de maintien empêchant la fermeture (1) de tourner pendant l'exploration des caractéristiques de moulage prévues sur la face externe et la face interne de la fermeture.
  11. Dispositif selon une des revendications 4 à 10,
    caractérisé en ce que
    le dispositif de centrage (55, 59) comporte un dispositif de fixation (65) maintenant la fermeture à explorer (1) dans le dispositif de maintien.
  12. Dispositif selon la revendication 11,
    caractérisé en ce que
    le dispositif de fixation comporte un poinçon d'impression (67) traversant le dispositif de centrage (55, 59) et pouvant tourner, de préférence.
  13. Dispositif selon une des revendications 4 à 12,
    caractérisé en ce qu'
    il comporte un boîtier (51), de préférence cylindrique circulaire, contenant les divers groupes constructifs et pouvant être relié à un entraînement de rotation ainsi qu'à un entraînement assurant le coulissement le long de l'axe médian de rotation (53) de l'outil (50).
  14. Dispositif selon une des revendications 4 à 13,
    caractérisé en ce que
    le dispositif de coupe sert à réaliser la coupe horizontale (13) et/ou les entailles verticales (29).
  15. Dispositif selon la revendication 17,
    caractérisé en ce que
    le dispositif de coupe peut être actionné de manière qu'un couteau produisant les entailles verticales (29) puisse se déplacer par rapport à la fermeture (1) maintenue par le dispositif de centrage (55).
  16. Dispositif selon une des revendications 4 à 15,
    caractérisé en ce que
    le dispositif de centrage interne (55) peut être déplacé par rapport au dispositif de centrage externe (59) de manière que le dispositif de coupe puisse accéder sans obstacle à la face externe de la fermeture (1).
  17. Dispositif selon une des revendications 4 à 16,
    caractérisé en ce que
    le dispositif de coupe est conçu de manière que, pendant la réalisation des entailles verticales (29), des zones, de préférence des barrettes de pontage (31) demeurent intactes au-dessus des entailles verticales (29).
  18. Fermeture en matière plastique (1) pour récipients, comportant un panneau de fermeture (3) prolongé par une enveloppe (5) dont la zone marginale (7) est une zone de garantie comportant au moins une entaille verticale (29),
    caractérisée en ce qu'
    elle présente trois éléments annulaires (33), trois barrettes de maintien (15) et corrélativement trois entailles verticales (29) réparties à des distances égales en périphérie par rapport aux barrettes de maintien (15) et réalisées ultérieurement dans la paroi (27) de la zone de garantie (9), avec positionnement par rapport aux barrettes de maintien (15).
EP92913766A 1991-06-29 1992-06-25 Fermeture en matiere plastique pour recipients comportant un element indicateur de tentative d'ouverture Expired - Lifetime EP0592506B2 (fr)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
DE4121618A DE4121618A1 (de) 1991-06-29 1991-06-29 Kunststoff-verschluss fuer behaelter
DE4121619 1991-06-29
DE4121618 1991-06-29
DE4121619A DE4121619C2 (de) 1991-06-29 1991-06-29 Kunststoff-Verschluß für Behälter
PCT/EP1992/001434 WO1993000270A1 (fr) 1991-06-29 1992-06-25 Fermeture en matiere plastique pour recipients comportant un element indicateur de tentative d'ouverture

Publications (3)

Publication Number Publication Date
EP0592506A1 EP0592506A1 (fr) 1994-04-20
EP0592506B1 true EP0592506B1 (fr) 1997-05-02
EP0592506B2 EP0592506B2 (fr) 2000-01-26

Family

ID=25905066

Family Applications (2)

Application Number Title Priority Date Filing Date
EP92110700A Pending EP0521389A1 (fr) 1991-06-29 1992-06-25 Capuchon de fermeture en matière plastique pour récipients, muni d'un élément de garantie
EP92913766A Expired - Lifetime EP0592506B2 (fr) 1991-06-29 1992-06-25 Fermeture en matiere plastique pour recipients comportant un element indicateur de tentative d'ouverture

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP92110700A Pending EP0521389A1 (fr) 1991-06-29 1992-06-25 Capuchon de fermeture en matière plastique pour récipients, muni d'un élément de garantie

Country Status (14)

Country Link
EP (2) EP0521389A1 (fr)
JP (1) JPH06508587A (fr)
KR (1) KR100220787B1 (fr)
AT (1) ATE152416T1 (fr)
AU (1) AU665770B2 (fr)
BR (1) BR9206223A (fr)
CA (1) CA2112565C (fr)
DE (1) DE59208436D1 (fr)
DK (1) DK0592506T4 (fr)
ES (1) ES2104935T5 (fr)
FI (1) FI935894A0 (fr)
MX (1) MX9203718A (fr)
NO (1) NO307211B1 (fr)
WO (1) WO1993000270A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5964139A (en) * 1991-06-29 1999-10-12 Alcoa Deutschland Gmbh Apparatas for producing container cap

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EG21314A (en) 1992-07-16 2000-10-31 Driutt Rodney Malcolm Tamper evident closure
US5320234A (en) * 1992-10-07 1994-06-14 H-C Industries, Inc. Tamper-indicating plastic closure with pilfer band having staggered scores
US5405032A (en) * 1992-11-06 1995-04-11 Crown Cork & Seal Company, Inc. Tamper indicating closure and method and device for the manufacture of a tamper-indicating closure
US5557999A (en) * 1994-01-14 1996-09-24 H-C Industries, Inc. Method for manufacturing a tamper-indicating plastic closure
US5658749A (en) * 1994-04-05 1997-08-19 Corning Clinical Laboratories, Inc. Method for processing mycobacteria
CA2230152C (fr) * 1997-02-27 2001-09-18 Keith W. Ingram Ensemble indicateur d'infraction
IT1292751B1 (it) 1997-06-20 1999-02-11 Bormioli Rocco & Figlio Spa Procedimento per realizzare capsule monopezzo in materiale plastico.
FR2778641B1 (fr) * 1998-05-13 2000-06-16 Crown Cork & Seal Tech Corp Bouchon a vis presentant une gorge destinee a recevoir un joint et moule pour realiser un tel bouchon
DE10328179A1 (de) 2003-06-16 2005-01-20 Alcoa Deutschland Gmbh Verschließsystem und Verfahren zum Verschließen von Behältern
JP4799145B2 (ja) * 2005-11-24 2011-10-26 日本クラウンコルク株式会社 合成樹脂製容器蓋
DE102009044643A1 (de) 2009-11-24 2011-05-26 Kunststofftechnik Waidhofen An Der Thaya Gmbh Verschlusskappe mit Garantiering sowie Spritzgießwerkzeug und Verfahren zu deren Herstellung
JP6254427B2 (ja) * 2013-11-22 2017-12-27 日本クロージャー株式会社 合成樹脂製容器蓋
GB201601789D0 (en) * 2016-02-01 2016-03-16 Obrist Closures Switzerland Improvements in or relating to tamper-evident closures
EP3831557A1 (fr) 2019-12-05 2021-06-09 PackSys Global AG Dispositif et procédé de fabrication d'une géométrie de découpe dans un bouchon de fermeture pour un récipient

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU2506467A (en) * 1968-07-10 1970-01-15 Containers Limited Improvements in piler-proof closures
US4217989A (en) * 1977-09-12 1980-08-19 National Can Corporation Tamper-proof closure
AU560751B2 (en) * 1981-07-24 1987-04-16 H-C Industries Inc. Plastic bottle closure
US4666053A (en) * 1986-01-31 1987-05-19 H-C Industries, Inc. Tamper-indicating plastic closure
DE8709690U1 (de) * 1987-07-14 1987-12-10 Barein, Norbert, 4050 Mönchengladbach Garantieverschluß
NO911503L (no) * 1990-04-27 1991-10-28 Crown Cork Ag Skrukappe med et garantibaand som er utvidbart ved foerstegangs oppskruing.

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5964139A (en) * 1991-06-29 1999-10-12 Alcoa Deutschland Gmbh Apparatas for producing container cap

Also Published As

Publication number Publication date
BR9206223A (pt) 1994-11-22
KR940701355A (ko) 1994-05-28
ES2104935T5 (es) 2000-06-16
EP0521389A1 (fr) 1993-01-07
ATE152416T1 (de) 1997-05-15
WO1993000270A1 (fr) 1993-01-07
NO307211B1 (no) 2000-02-28
JPH06508587A (ja) 1994-09-29
FI935894A (fi) 1993-12-28
DE59208436D1 (de) 1997-06-05
DK0592506T4 (da) 2000-06-26
CA2112565C (fr) 2002-08-27
DK0592506T3 (da) 1997-11-03
EP0592506B2 (fr) 2000-01-26
CA2112565A1 (fr) 1993-01-07
MX9203718A (es) 1994-05-31
AU665770B2 (en) 1996-01-18
FI935894A0 (fi) 1993-12-28
EP0592506A1 (fr) 1994-04-20
KR100220787B1 (ko) 1999-09-15
AU2173492A (en) 1993-01-25
ES2104935T3 (es) 1997-10-16
NO934182D0 (no) 1993-11-19
NO934182L (no) 1993-11-19

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