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EP0605678A1 - Fermeture en matiere plastique avec element de garantie. - Google Patents

Fermeture en matiere plastique avec element de garantie.

Info

Publication number
EP0605678A1
EP0605678A1 EP93912544A EP93912544A EP0605678A1 EP 0605678 A1 EP0605678 A1 EP 0605678A1 EP 93912544 A EP93912544 A EP 93912544A EP 93912544 A EP93912544 A EP 93912544A EP 0605678 A1 EP0605678 A1 EP 0605678A1
Authority
EP
European Patent Office
Prior art keywords
guarantee
piece plastic
cap
closure
closure according
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.)
Granted
Application number
EP93912544A
Other languages
German (de)
English (en)
Other versions
EP0605678B1 (fr
Inventor
Werner Fritz Dubach
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.)
Medisize Schweiz AG
Original Assignee
Createchnic AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Createchnic AG filed Critical Createchnic AG
Publication of EP0605678A1 publication Critical patent/EP0605678A1/fr
Application granted granted Critical
Publication of EP0605678B1 publication Critical patent/EP0605678B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • B65D55/02—Locking devices; Means for discouraging or indicating unauthorised opening or removal of closure
    • B65D55/024—Closures in which a part has to be ruptured to gain access to the contents
    • 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
    • B65D47/00—Closures with filling and discharging, or with discharging, devices
    • B65D47/04—Closures with discharging devices other than pumps
    • B65D47/06—Closures with discharging devices other than pumps with pouring spouts or tubes; with discharge nozzles or passages
    • B65D47/08—Closures with discharging devices other than pumps with pouring spouts or tubes; with discharge nozzles or passages having articulated or hinged closures
    • B65D47/0804—Closures with discharging devices other than pumps with pouring spouts or tubes; with discharge nozzles or passages having articulated or hinged closures integrally formed with the base element provided with the spout or discharge passage
    • B65D47/0833—Hinges without elastic bias
    • B65D47/0838—Hinges without elastic bias located at an edge of the base element

Definitions

  • the present invention relates to a one-piece plastic closure for attachment to a container, consisting of a lower part with a cover surface in which a pouring opening is arranged, and a cap pivotally connected therewith via a hinge axis, and a guarantee element connected in one piece to the closure.
  • Plastic closures of the type mentioned are known in numerous designs. In this regard, reference is made in particular to the two American patents US-A-3'441'161 and USA-4 * 487 * 324.
  • Plastic closures with a lower part and a cap which is pivotally connected thereto via a hinge axis usually always use guarantee bands which precede the first opening movement must be removed.
  • the first-mentioned document shows a bottle cap in which the bottle neck itself forms the pouring opening and the lower part is thus omitted a top surface consists only of an annular wall with a clamping bead which is connected in one piece to the peg-like upper part. Only by removing the guarantee band are the upper part and lower part separated apart from a residual connection which serves as the hinge axis.
  • Such a closure can be manufactured without any problems, but it must be injected in the closed position, which makes it impossible to form the lower part with a cover surface and a pouring opening arranged therein.
  • the second document corresponds exactly to the preamble of claim 1 and thus has a lower part with a top surface in which a pouring opening is arranged.
  • the cap is pivotally connected to the lower part via a hinge axis.
  • Such a closure is sprayed in the open state.
  • the guarantee element is a guarantee band which is arranged on the lower part and which, on its circumference, has recesses which engage in the projections on the cover in the guarantee position.
  • the at least one guarantee element which in the guarantee state is operatively connected to the retaining bead on the container neck, has a double function in which it performs both the first opening movement by opening the cap , as is made visible by unscrewing the entire closure from the container.
  • FIG. 1 shows an axial longitudinal section through a one-piece plastic closure with a guarantee element in the guarantee state and FIG. 2 shows the same closure as in FIG. 1 after the first opening movement has been carried out in the state of use;
  • FIG. 3 shows a variant of the plastic closure in which the guarantee element does not change the position from the guarantee state to the state of use, during
  • Guarantee element performs a movement from an upper position in the guarantee state to a lower position in the use state when opening for the first time.
  • Guarantee element but then part of the guarantee element remains in the cap of the closure.
  • a further embodiment of the closure is in the
  • FIG. 10 shows a guarantee element which is facing downward and opposite the top surface of the cap
  • FIG. 12 shows a view from above of a closed closure in the guarantee state with two eccentrically arranged guarantee elements
  • Figures 14a to d show different shapes of the
  • FIGS. 15a and b show variants of such sealing shapes after the first opening movement of the closure in a position of use rotated with respect to the recess in the lid.
  • FIGS. 16a and b show a further embodiment of a guarantee element in the guarantee position, once in the top view of the cover (b) and once in longitudinal section (a).
  • FIG. 17 again shows a schematic sketch of a guarantee element which is kept under prestress in the guarantee state. Finally shows the
  • FIG. 18 shows a partial section of a closure, the strut with another form-locking means and
  • Figure 20 is again a partial section through a
  • FIG. 21 shows the same closure in the production position.
  • FIGS. 22a to i show a plastic hinge closure in various positions of manufacture (ad) in the guarantee state (e), and in different closing positions after the first opening (fi).
  • a particularly preferred embodiment is shown in FIGS. 1 and 2, which is particularly preferred because the guarantee element can be triggered by two different opening movements.
  • Such a closure which deviates from the round shape, is particularly suitable for being placed on blown plastic bottles, which can have a special design for the neck of the container.
  • Such a container 1 has a cylindrical container neck 2, which in the area of its upper end has an outer circumferential, annular holding bead 3, which here has, for example, a hook-shaped cross section.
  • the transition area 4 between the container neck 3 and the actual container 1 has a shape that deviates from the round shape. The closure bounced on the container 1 can thus be unscrewed.
  • the transition region 4 which, however, must have a larger diameter than the container neck 2 can also be cylindrical and provided with an external thread like this.
  • a cylindrical closure can then also be screwed or pressed onto a container neck designed in this way, which otherwise has the same mode of operation and design, how the closure shown GE can have according to FIGS. 1 and 2.
  • the closure itself which is designated by 10, has a lower part 11 and a cap 12, which is connected to the lower part via a hinge axis 13.
  • the hinge axis 13 is preferably formed by a film hinge, other hinge axes that are movable, such as hinges, also being suitable.
  • the lower part 11 has a circumferential jacket wall 14 which is non-positively and / or positively held on the transition area 4 of the container 1.
  • corresponding clamping beads are provided on the inside of the jacket wall. If the closure is a cylindrical one, the jacket wall 14 can be provided with an internal thread instead of the clamping beads. It is essential, however, that the jacket wall 14 surrounds the upper region of the container neck 2 at a distance, and thus leaves a free space F.
  • the lower part 11 is closed at the top by a cover surface 16 which has a pouring opening 17.
  • the cap 12 also has a top surface 19 and a circumferential, adjoining the top surface 19, Jacket wall .20.
  • the jacket walls 20 or 14 of the cap 12 or the lower part 11 are at least approximately vertically one above the other. However, this is by no means imperative since the entire closure 10 can also have a taper.
  • a guarantee element 21 is held in the cover surface 19 of the cap 12 via predetermined breaking points 22 in the form of struts.
  • the guarantee element 21 has a sealing surface in the form of a plate 23, on the underside of which a strut 24 is formed.
  • the plate 23, which forms the seal, is flush with its surface with the upper side of the top surface 19 of the cap 12.
  • a recess 26 is left free, which is underneath is the plate 23 and through which the strut 24 extends to below the top surface 16 and just below the retaining bead 3 on the container neck 2.
  • the strut 24 thus protrudes into the free space F.
  • the lower part 11 must be sealed with respect to the container neck 2, for which purpose an annular wall 27 projecting sealingly into the container neck 2 extends circumferentially around the pouring opening 17 is provided.
  • the recess 26 may pass through the top surface 16 of the lower part 11 only in the area between the jacket wall 14 and the dense ring wall 27 and consequently only communicate with the free space F.
  • the closure 10 is shown in the state of use in FIG.
  • the closure is brought into this state by a first opening movement.
  • This general expression is based on the fact that, regardless of the type of opening, the guarantee element 21 is transferred from the guarantee state to the use state.
  • the user will open the cap 12 by pivoting it about the pivot axis 13.
  • the top surface 19 of the cap 12 moves upward relative to the lower part 11 or the container neck 2.
  • the form-locking means 25 engages at the lower end of the strut 24 on the retaining bead 3 of the container neck 2.
  • the predetermined breaking points 22 tear and the guarantee element 21 falls down since it is no longer held in the cap 12. This is possible because the free space F has enough space for the strut 24.
  • the hole 28 in the cover surface 19 of the cap has become free Closure 10 is no longer under warranty.
  • the same consequence has an opening movement of the entire closure 10.
  • the closure. 10 as a twist-off closure. designed, when the entire closure 10 is opened for the first time, the entire closure 10 is rotated relative to the container 1 or container neck 2.
  • the form-fitting means 25 initially slides along the strut 24 only along the lower edge of the holding bead 3, whereupon the form-fitting means 25 engages behind the holding bead in the subsequent vertical movement of the closure 10 and the predetermined breaking points 22 tear.
  • the guarantee element 21 also falls into a lower position on this and releases eir '8 in the top surface 19 of the cap 12.
  • the guarantee element 21 Since the guarantee element 21 has now performed its actual function, it could easily be removed. However, if the recess 26 is designed in such a way that the plate 23, which serves as a seal in the guarantee state, can be held therein in a positive and / or non-positive manner, the guarantee element now has an aesthetic task in which it holds the recess 26 elegant covers. In the simplest case, the guarantee element 21, after which one has opened the cap 12 for the first time, push it into the recess 26 by hand. However, since it can be assumed that many users do not consider this, a chicane 30, for example in the form of a spring arm, can advantageously be provided on the underside of the top surface 19 of the cap 12. This baffle 30 will then automatically press the plate 23 during the subsequent opening movement of the cap 12 in the subsequent closing process and press it into the recess 26.
  • the embodiment described here is therefore absolutely foolproof in terms of function and makes incorrect manipulation impossible.
  • the guarantee element 21 and the container 1 in this construction it is consequently also not possible to separate the entire closure 10 from the container 1 without the guarantee element being visibly changed from the guarantee state to the use state.
  • the need for closures which allow both an opening by means of a lid and the complete separation of the closure from the container has increased in recent times in particular because the majority of plastic containers nowadays have to be refillable. Nevertheless, a large number of closures is also self-evident required for non-refillable containers, in which an opening movement between the closure and the container does not occur at all.
  • the positive locking means 25 on the strut 24 does not need to be in operative connection with the container neck 2, but only with the lower part 11 of the closure.
  • closures Various variants of such closures are shown and described in the examples below, although certain details can also be realized on closures in which the guarantee element 21 is operatively connected to the container 1.
  • FIG 3 again shows a closure in longitudinal section. While the lower part 11 corresponds approximately to the embodiment according to FIGS. 1 and 2, the cap 12 connected therewith via the hinge 13 is designed to be relatively low, that is to say the jacket wall 20 of the cap is relatively short. This time, the guarantee element 21 is not in a form-fitting connection with the container, but with the lower part 11 of the closure.
  • the plate 23 of the guarantee element 21 from Guarantee condition in the top surface 19 of the cap 12 is pulled down onto the top surface 16 of the lower part 11, the plate 23 remains in the cap 12- in the embodiments according to FIGS.
  • holding claws 22 must be arranged below the cover surface 19 of the cap 12, which hold the plate 23 in a lower position, which represents the state of use.
  • the plate 23 slides downward between the holding claws 32 until it is held there again, whereupon when the opening movement continues, the strut 24 tears beneath the plate 23, at a predetermined breaking point 33 provided here for special purposes the positive locking means 24 thus falls into the free space F between the lower part 11 and the container, not shown here.
  • the holding claws 32 are additionally provided with holding knobs 34 in the embodiment according to FIG. 7, so that the plate 23 also lies in the low lying position is kept secure.
  • the container can thus have an opening which corresponds exactly in size to the lower part 11 of the closure.
  • the production position of the closure is shown in FIG. This is sprayed in the fully open position.
  • the guarantee element 21 also has a plate 23, which serves as a seal, as well as a strut 24 fastened thereon with terminal form-locking means 25.
  • the predetermined breaking points 22 are arranged here on the cap 12 or on the plate 23 in such a way that this can pivot about the predetermined breaking points 22. In the production position, according to FIG.
  • the plate 23 now projects vertically from the top surface 19 of the cap 12.
  • the strut 24 runs parallel to the cover surface 19 in this position.
  • a hook 34 is injection molded onto the cover surface 16 of the lower part 11, behind which the form-locking means 25 can engage.
  • the injection molding machine can pivot the plate 23 around the predetermined breaking point 22, which now serves as a fulcrum, so that the surface of the plate 23 is aligned with the top surface 19 of the cap 12.
  • the cap 12 is now swiveled closed, at the same time exerting a pressure on the surface of the plate 23, so that the form-locking means 25 snaps behind the hook 34 without the plate 23 is moved out of its position.
  • the guarantee state as shown in FIG. 9, has now been reached.
  • a tensile force is thus exerted on the predetermined breaking point 22 until it breaks.
  • the now loose guarantee element 21 falls on the top surface 16 of the lower part and can now be thrown away.
  • the hook 34 on the top of the container neck and in turn provide a corresponding recess 26 in the top surface 16 of the lower part 11, through which the hook 34 can protrude upward beyond the top surface.
  • a corresponding ring wall for sealing with the Container neck may be provided on the lower part 11 of the closure 10.
  • FIGS. 10 and 11 only serve to illustrate the possibilities that the plate 23, with respect to the top surface 19, of the cap 12 either in a position offset downwards, as shown in FIG. 10, or in a position offset upwards, w: - shown in Figure 11 to arrange.
  • the predetermined breaking points 22 can be realized in these cases, i et by concrete bridges in the form of extremely thin, circumferential Rr -'- ipartien.
  • FIGS. 12 and 13 each show a closure 10, each of which has an oval cross-sectional shape.
  • the two closures, which are shown in the guarantee, are visible with a view of the cap 12.
  • a closure can be seen, according to FIG. 12, with a centrally arranged hinge axis in the form of a film hinge 13.
  • Both sides of the film hinge 13 are indicated two straps 35, which cause the snap action of the closure.
  • there are two guarantee elements 21 which are symmetrical with respect to the axes of the oval.
  • the predetermined breaking points 22 can be clearly seen.
  • FIG. 13 there is only a single guarantee element, which is also arranged asymmetrically in the closure.
  • the snap hinge is formed here by two partial hinges 13, which is designed on both sides of a spring element in the form of a toggle lever 37.
  • a pusher 36 is attached to the cap 12 on the opposite side of the closure, which facilitates the opening of the closure.
  • other known snap hinges can of course also be used, without limitation, so to speak.
  • FIGS. 14 a to d and 15 a and b consequently show various examples of shapes that the plate 23 can have.
  • FIGS. 14 c and d are particularly suitable.
  • a straight edge of the plate should run parallel to the hinge axis.
  • predetermined breaking points 22 in the form of struts may of course only be arranged along that straight edge which runs parallel to the hinge axis.
  • the plate has the shape of an equilateral triangle, as shown in FIG. 15b.
  • What is essential in this embodiment, in which a torsional force is used, is not so much the consideration of creating another possibility of an optically recognizable seal, but rather that such an embodiment is extremely sabotage-proof.
  • the sealing surface 23 is the same size as the cross-sectional surface of the strut 24. If the webs of the predetermined breaking points 22 are thus destroyed during the first opening movement, the entire strut 24 with its sealing surface 23 falls through the cover surface 16 into the space below .
  • the strut 24 is hollow to save material.
  • the strut 24 is provided with longitudinal slots 29, which allow an additional spring action, which makes sense with such a large cross-sectional area of the strut.
  • the cross-sectional shape of the strut can also have the same shape as the sealing surface 23.
  • Figure 16b shows a solution partially in supervision, in which the sealing surface and strut have a cross shape.
  • the strut can be massively manufactured.
  • FIG. 17 a solution is sketched in FIG. 17, in which an additional spring force is used for this .
  • the design of the guarantee element 21 with a spring plate 23 and the strut 24 molded thereon with terminal form-locking means 25 corresponds to previously described exemplary embodiments.
  • a plurality of spring struts 44 are present below the top surface 16 of the lower part 11 in the area around the recess 26.
  • the spring legs 44 can be pretensioned by means of a slide 45, so that they press on the form-locking means 25 when the closure is in the guaranteed state.
  • the tension of the spring struts 44 is first exerted by the tensile force exerted by the form-locking means 25 the struts 44 is passed increases.
  • the predetermined breaking points 22 tear, the entire guarantee element 21 is thrown downwards at high speed, where it is finally caught in a recess in the lower cover surface 16 of the lower part 11 by means of holding knobs 46.
  • the configuration of the form-locking means 25 on the strut 24 does not always have to have a hook-like shape, as is shown in FIGS. 18 and 19.
  • the strut 24 is in the form of a spring plate molded onto the underside of the plate 23, which only has an opening 25 as the form-locking means.
  • the hook 34 on the top surface 16 of the lower part again corresponds to the solution according to FIGS. 8 and 9.
  • this type of form-locking means 25 such a strut can also have more than just one form-locking means, for example two openings 25 and 25 'arranged one above the other in the strut. as shown in Figure 19.
  • the plate 23 If the plate 23 is torn out of the cap when it is opened for the first time, it can then be pressed onto the top surface of the lower part.
  • the top surface of the lower part in turn has a corresponding recess in which the strut engages.
  • a claw 39 in the plane of the top surface and made in one piece from this, then engages in both positions of the guarantee condition and the condition of use, in the upper or lower opening 25 or 25 '.
  • the cutout 26 does not need to be congruent under the strut 24.
  • Figures 20 and 21 illustrate this.
  • the guarantee element 21 was in each case firmly connected to the cap 12 of the closure 10 in the guarantee state, another solution is shown in the last exemplary embodiment, according to FIG. 22.
  • the guarantee element 21 here has the form of a pivotable lever 50 which is movably connected to the lower part 11 via a pivot axis 51 is.
  • a through hole 52 is provided in the top surface 19 of the cap 12, which is the same size as the lever arm surface 53.
  • the part of the injection core 60 thus supports the swivel lever 50 until the closure is completely closed, as shown in FIG. 18d, the lever arm surface 53 now lying exactly in the through hole 52 of the cap 12. Only now is the injection core part 60 extended and the closure 10 is in the warranty state according to FIG. 18 e.
  • a chicane 54 in the form of a spring plate is arranged directly next to the through hole 52 on the inside of the cover surface 19 of the cap 12. This baffle 54 is pretensioned when it is closed for the first time, it strokes along the pivoting lever 50 and finally rests against the pivoting lever 50 under pretension.
  • the pivot lever 50 can now be through the chicane 54 Push down to the lower part 11 so that the pivoting lever 50 pivots into the recess 26 and finally closes it completely in the position of use, according to FIG. 18 i.
  • This solution therefore does not require any predetermined breaking points.
  • the condition for this solution is again that it has a free space F below the top surface 16 of the lower part 11, between the jacket wall 14 and the sealing ring wall 27 around the spout 17.
  • the numerous exemplary embodiments are intended in particular to show the diverse possibilities of the general inventive concept.
  • This consists in the fact that there is always a guarantee element 21 which always comes into an optically recognizable different position or shape when the closure is opened for the first time, without any other manipulation being necessary in addition to the opening movement of the closure. It is consequently irrelevant whether the guarantee element 21 is connected in one piece to the cap 12 or the lower part 11 in the guarantee state.
  • the type of movement which the guarantee element performs when it is opened for the first time is also different. This can be a more or less vertical translation movement, a rotation movement about a horizontal or about a vertical axis.

Landscapes

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

Abstract

Un récipient (1) comporte une fermeture monobloc en matière plastique (10) composée d'une partie inférieure (11) rattachée à un capuchon (12) par un axe charnière (13). Dans l'état de garantie, un élément de garantie est maintenu solidairement dans le capuchon par des points destinés à la rupture (22). L'élément de garantie a une face de scellement en forme de plaquette (23) présentant sur sa face inférieure une partie jointive (24). Cette dernière est maintenue, en position de garantie, sur la face inférieure (11) de la fermeture ou sur le col du récipient (1). Lorsque le capuchon (12) est ouvert pour la première fois, la face de scellement (23) est arrachée du recouvrement (19) du capuchon. Cette solution entraîne un descellement automatique sans manipulation supplémentaire, ce qui permet des formes d'exécution multiples.
EP93912544A 1992-08-06 1993-07-08 Fermeture en matiere plastique avec element de garantie Expired - Lifetime EP0605678B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
CH246792A CH686300A5 (de) 1992-08-06 1992-08-06 Kunststoffverschluss mit Garantieelement.
CH2467/92 1992-08-06
PCT/CH1993/000175 WO1994003371A1 (fr) 1992-08-06 1993-07-08 Fermeture en matiere plastique avec element de garantie

Publications (2)

Publication Number Publication Date
EP0605678A1 true EP0605678A1 (fr) 1994-07-13
EP0605678B1 EP0605678B1 (fr) 1996-06-05

Family

ID=4234476

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93912544A Expired - Lifetime EP0605678B1 (fr) 1992-08-06 1993-07-08 Fermeture en matiere plastique avec element de garantie

Country Status (10)

Country Link
US (1) US5497906A (fr)
EP (1) EP0605678B1 (fr)
JP (1) JPH06511459A (fr)
AT (1) ATE138870T1 (fr)
AU (1) AU668569B2 (fr)
CA (1) CA2103651A1 (fr)
CH (1) CH686300A5 (fr)
DE (1) DE59302822D1 (fr)
WO (1) WO1994003371A1 (fr)
ZA (1) ZA935679B (fr)

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Also Published As

Publication number Publication date
JPH06511459A (ja) 1994-12-22
AU4305293A (en) 1994-03-03
CH686300A5 (de) 1996-02-29
DE59302822D1 (de) 1996-07-11
CA2103651A1 (fr) 1994-02-07
AU668569B2 (en) 1996-05-09
US5497906A (en) 1996-03-12
WO1994003371A1 (fr) 1994-02-17
ZA935679B (en) 1994-03-24
EP0605678B1 (fr) 1996-06-05
ATE138870T1 (de) 1996-06-15

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