WO2023135140A1 - Capuchon de fermeture - Google Patents

Capuchon de fermeture Download PDF

Info

Publication number
WO2023135140A1
WO2023135140A1 PCT/EP2023/050475 EP2023050475W WO2023135140A1 WO 2023135140 A1 WO2023135140 A1 WO 2023135140A1 EP 2023050475 W EP2023050475 W EP 2023050475W WO 2023135140 A1 WO2023135140 A1 WO 2023135140A1
Authority
WO
WIPO (PCT)
Prior art keywords
closure cap
edge
cap according
spout
ring
Prior art date
Application number
PCT/EP2023/050475
Other languages
German (de)
English (en)
Inventor
Franz-Michael LÄSSER
Werner STEURER
Peter WINGHART
Original Assignee
Alpla Werke Alwin Lehner Gmbh & Co. Kg
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 Alpla Werke Alwin Lehner Gmbh & Co. Kg filed Critical Alpla Werke Alwin Lehner Gmbh & Co. Kg
Publication of WO2023135140A1 publication Critical patent/WO2023135140A1/fr

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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
    • B65D1/00—Containers having bodies formed in one piece, e.g. by casting metallic material, by moulding plastics, by blowing vitreous material, by throwing ceramic material, by moulding pulped fibrous material, by deep-drawing operations performed on sheet material
    • B65D1/02—Bottles or similar containers with necks or like restricted apertures, designed for pouring contents
    • B65D1/0223—Bottles or similar containers with necks or like restricted apertures, designed for pouring contents characterised by shape
    • B65D1/023—Neck construction
    • B65D1/0246—Closure retaining means, e.g. beads, screw-threads
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D55/00—Accessories for container closures not otherwise provided for
    • B65D55/16—Devices preventing loss of removable closure members
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D41/00—Caps, e.g. crown caps or crown seals, i.e. members having parts arranged for engagement with the external periphery of a neck or wall defining a pouring opening or discharge aperture; Protective cap-like covers for closure members, e.g. decorative covers of metal foil or paper
    • B65D41/32—Caps or cap-like covers with lines of weakness, tearing-strips, tags, or like opening or removal devices, e.g. to facilitate formation of pouring openings
    • B65D41/34—Threaded or like caps or cap-like covers provided with tamper elements formed in, or attached to, the closure skirt
    • B65D41/3442—Threaded or like caps or cap-like covers provided with tamper elements formed in, or attached to, the closure skirt with rigid bead or projections formed on the tamper element and coacting with bead or projections on the container
    • B65D41/3447—Threaded or like caps or cap-like covers provided with tamper elements formed in, or attached to, the closure skirt with rigid bead or projections formed on the tamper element and coacting with bead or projections on the container the tamper element being integrally connected to the closure by means of bridges
    • 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 invention relates to a closure cap according to the preamble of claim 1 and a container according to the preamble of claim 25.
  • Closure caps are known from the prior art in the field of plastic closure caps with a tamper-proof band, which are held captively on the container and close the pouring opening.
  • the holding function is also of great importance insofar as legal provisions will be enacted in the next few years, which will oblige closures of beverage bottles to be captively connected to the beverage bottle even when they are open.
  • closure caps which have two retaining straps which connect a threaded part of the closure cap to a guarantee ring of the closure cap.
  • the two retaining straps can act as a hinge around which the threaded part can be folded away from the guarantee ring or from the container to be closed from a closed position into an open position.
  • a locking lug is formed on the open edge of the threaded part. With the locking lug, the threaded part can be locked in the open position on the external thread of the bottle neck. As a result, the threaded part is fixed in the open position and does not interfere with the pouring process.
  • the locking lug inevitably protrudes into the guarantee ring, as a result of which a recess for the locking lug must be provided on the guarantee ring.
  • This recess inevitably weakens the guarantee ring. Due to the recess, the guarantee ring is less dimensionally stable and runs the risk of being pulled off the bottleneck when the threaded part is unscrewed. As a result, the guarantee function and the holding function of the closure cap are not reliably present, particularly in the case of guarantee rings with large diameters.
  • the invention is preferably characterized in that the web section has a greater thickness than the rest of the anti-tamper ring, that a first or second locking lug protrudes at the open edge adjacent to the first or third end and an intermediate space is formed between the first and second locking lug and that a retaining web is formed on the web section, which protrudes into the intermediate space in the closed position.
  • the threaded part In the open position, the threaded part can be locked with the two locking lugs on the external thread of the spout. As a result, the threaded part is held twice in the open position and is accordingly held stably on the spout, does not rotate unintentionally relative to the spout and consequently does not interfere with the pouring out of filling material.
  • first or second step protruding radially outwards is present at the open end of the first or second retaining lug.
  • the steps improve the locking on the external thread because they enlarge the locking surface on the external thread.
  • a first and second recess are expediently provided on the web section, into which the first and the second locking lug protrude in the closed position and between which the holding web rises.
  • the height of the guarantee ring is reduced by the provision of the indentations, which saves material and enables the closure cap to fit onto a standardized spout.
  • the invention is also preferably characterized in that the first and third ends are articulated with a first and second hinge at the open edge.
  • the hinges allow the threaded portion to be pivoted about the hinges to the open position relative to the first and second tethers, making the transition to the open position simple and self-explanatory for the user. Through this a misleading tearing off of the threaded part from the guarantee ring can also be avoided.
  • the first edge is detachably connected to the open edge of the threaded part with at least one first predetermined breaking web
  • the second edge is detachably connected to the guarantee ring with at least one second predetermined breaking web.
  • the third edge can also be detachably connected to the open edge of the threaded part with at least one third predetermined breaking web
  • the fourth edge can be detachably connected to the guarantee ring with at least one fourth predetermined breaking web.
  • the first and third ends are preferably connected to the guarantee ring by a second and a fourth predetermined breaking web. It is also preferred if the retaining web is releasably connected to the open edge with a fifth predetermined breaking web.
  • the retaining straps and the retaining web are adequately supported and held so that they are not damaged when they hit the spout. Further third and fourth predetermined breaking webs can therefore be dispensed with, as a result of which plastic material can be saved.
  • the thickness of the web section is 1.5 to 2 times the thickness of the rest of the anti-tamper ring. This thickness dimensioning ensures that the web section has sufficient stability so that the anti-tamper ring is not pulled off the spout when the threaded part is unscrewed, even if the anti-tamper ring has a large diameter of up to 40 mm.
  • the transition from the web section and to the rest of the anti-tamper ring is expediently continuous. This reliably prevents the guarantee ring from weakening and avoids the risk of injury to users.
  • the first and second lugs have a height of between 4 and 10 mm and preferably between 5 and 7 mm.
  • the threaded part can be locked in the open position with the aid of the lugs in a wobbly and defined manner on the external thread, without the lugs being bent or being too short for locking.
  • the first and second stage have a height of between 1 and 3 mm and preferably between 1.5 and 2.5 mm. The steps improve the locking of the threaded part on the external thread.
  • this claimed height there is no risk of injury from the steps, since they only slightly protrude over the threaded part in the closed position.
  • first and the third end enclose a first opening angle of at least 25 degrees and at most 50 degrees and preferably at least 35 and at most 45 degrees with respect to the center point of the closure cap as the apex and the second and the fourth end a second Include an opening angle of at least 180 degrees and at most 220 degrees and preferably at least 190 and at most 210 degrees with respect to the center point of the closure cap as the apex.
  • the opening angle which the web section encloses with the center point as the apex, essentially corresponds to the first opening angle.
  • the web section is preferably formed by cutting out the first and second retaining straps from the guarantee ring. It would also be conceivable that a larger distance is provided between the first end of the first retaining strap and the web section or the third end of the second retaining strap and the web section than if the distance is formed by cutting out the retaining straps.
  • first and second end enclose a third opening angle of at least 40 degrees and at most 70 degrees and preferably at least 50 and at most 60 degrees with respect to the center point of the closure cap as apex.
  • the third and the fourth end enclose a fourth opening angle of at least 40 degrees and at most 70 degrees and preferably at least 50 and at most 60 degrees with respect to the center point of the closure cap as apex.
  • the first and second retaining straps have a length which allows the unscrewing, the transfer of the threaded part to the open position and the holding of the threaded part in the open position.
  • the Retaining straps the appropriate position on the guarantee ring to allow the protruding movements of the threaded part.
  • the third and the fourth opening angle are expediently of the same size, as a result of which the first and the second retaining strap are of the same length. As a result, the threaded part is held in the open position with an even pull.
  • first, second, third and fourth opening angles have a circle center as their apex, their angle sum must be 360 degrees.
  • the length of the first and second retaining straps is dimensioned such that they are stretched in the open position and the threaded part is held in the open position.
  • the retaining straps are preferably stretched elastically, as a result of which the threaded part can be moved several times between the closed position and the open position. The tension of the tethers allows the threaded portion to be held wobble-free in the open position.
  • a first and second recess for receiving the first and second retaining strap is expediently provided on the edge of the anti-tamper ring facing the first and second retaining strap.
  • the first and second retaining straps can be shaped from the guarantee ring in a space-saving manner and without additional material expenditure.
  • the first and second tethers can be cut out of the guarantee ring or formed during the manufacturing process of the closure cap.
  • an inwardly protruding inner cone e.g. in the form of a sealing cylinder or a sealing ring
  • the closure cap can therefore act as a so-called “cone-sealer” and reliably seals the spout.
  • the first and second retaining straps have a width of between 3 mm and 7 mm and preferably a width of between 4 mm and 5 mm. This dimensioning ensures that the retaining strap does not tear off unintentionally, especially if the predetermined breaking points are torn off.
  • the closure cap is not too high and can be joined together with standardized container necks with an external thread to form a seal.
  • the invention is also characterized in that the closure cap is designed with a standardized pouring spout with an external thread and an annular to collaborate ahead.
  • the closure cap can therefore be placed on standardized container necks, in particular on PET beverage bottles. Containers which are joined together with the closure cap according to the invention therefore do not have to be specially adapted to the closure cap.
  • the closure cap is expediently made of a plastic material, preferably HDPE (high density polyethylene) or PP (polypropylene).
  • the closure cap can therefore be manufactured using standard plastic materials from which known closure caps with a guarantee ring are also manufactured.
  • the threaded part, the guarantee ring, the retaining strap and the at least one first and second predetermined breaking element are produced in one piece.
  • the closure cap can be produced in an injection mold without further processing steps being necessary in order to form the first and second retaining band.
  • the inner cone is preferably also produced in one piece together with the other parts of the closure cap.
  • the anti-tamper ring has slots distributed over the circumference with an upper edge and a lower edge, the upper edge being formed by a section of the anti-tamper ring running in the shape of a circular arc and the lower edge being formed by a wall section that is inclined inwards in the radial direction and the bottom edge of each slot forms the projections, thereby providing engagement means for positive engagement with the annular projection. Since the engagement means in the form of the inwardly inclined wall sections are not present over the entire circumference of the anti-tamper ring and slots are also present, the design of which further reduces the use of material, the material requirement for plastic can be significantly reduced by up to 5%.
  • the wall section cannot move inward in the radial direction, as a result of which the anti-tamper ring is held on the annular projection and can only be pulled over it when the anti-tamper ring is stretched along its circumference.
  • the anti-tamper ring is held in place by the wall sections on the annular projection in such a way that the predetermined breaking elements are certain to tear before the wall sections are overcome.
  • the wall sections are flexible or moveable in the radial outward direction. As a result, the wall sections can be demolded from the injection mold or the injection mold with little effort. For the same reason, the application force for snapping open the closure cap is significantly reduced compared to the prior art. A stretching of the guarantee ring, which leads to permanent damage of the cap is largely prevented when demolding and pressing on.
  • a further aspect of the invention relates to a container having a container body, a spout adjoining the container body, an external thread formed on the spout and a closure cap according to the above description.
  • the first and second latching lugs latch in the open position on the external thread.
  • the threaded part as already explained above, is held stably in the open position and the closure cap cannot rotate independently around the spout in the open position.
  • the container body and the spout are made in one piece from a plastic, as a result of which the closure cap can be used with a commercially available plastic bottle, for example a PET bottle with a support ring.
  • the container is a beverage composite carton, the container body being a plastic-laminated carton and the spout, made of plastic, being connected to the container body by a non-detachable connection.
  • the cap is also suitable for being combined with composite beverage cartons.
  • FIG. 1 a perspective view of a closure cap obliquely from above in the closed position
  • FIG. 2 a side view of the closure cap
  • FIG. 3 a detailed side view of the closure cap
  • FIG. 4 a side view of the guarantee ring, placed on a container spout;
  • FIG. 5 a perspective view of the closure cap obliquely from below;
  • FIG. 6 another perspective view of the closure cap obliquely from below;
  • FIG. 7 a bottom view of the closure cap
  • FIG. 8 a perspective view of the closure cap in the open position
  • Figure 9 a detailed view of the guarantee ring in a further embodiment
  • FIG. 10 a sectional view of the guarantee ring from FIG. 10
  • the closure cap 11 is held captive on a container 13, for example on a composite beverage carton or a PET bottle.
  • the container 13 is indicated in FIG.
  • the closure cap 11 includes a cylindrical threaded portion 15, a tamper evident ring 17 and first and second tethers 19a, 19b.
  • the first and second retaining straps 19a, 19b are circular and are formed from the anti-tamper ring 17.
  • the threaded part 15 comprises a base 21 and a first cylindrical shell 23 with an open edge 25. On the inside of the shell 23 an internal thread 27 is formed.
  • the container 13 comprises a container body 28 and a spout 29 adjoining the container body 28.
  • the spout 29 is designed as a second cylindrical jacket.
  • An external thread 31 is formed on the spout 29 and interacts with the internal thread 27 .
  • the closure cap 11 closes the pouring opening 33, which is provided within the pouring device 29 and is delimited by it.
  • the guarantee ring 17 is held on the spout 13 in a form-fitting manner.
  • an annular projection 35 is formed on the outside of the spout 29, which of Projections 37, formed on the inside of the guarantee ring 17, can be gripped ( Figures 9 and 10).
  • the guarantee ring 17 can be rotated relative to the spout 29 .
  • the first tether 19a has a first end 39 and a second end 41.
  • the first end 39 is fixedly connected to the open edge 25.
  • FIG. The second end 41 is firmly connected to the guarantee ring 17 .
  • the closure cap 11 is held captive on the container 13 .
  • the first retaining strap 19a has a first edge 43 and a second edge 45.
  • the first edge 43 is connected to the open edge 25 with at least one first predetermined breaking web 47, and the second edge 45 can be detached from the guarantee ring 17 by at least one second predetermined breaking web 49 tied together.
  • the second tether 19b has a third end 51 and a fourth end 53.
  • the third end 51 is fixedly connected to the open edge 25.
  • FIG. The fourth end 53 is firmly connected to the guarantee ring 17 .
  • the closure cap 11 is also held captive on the container 13 .
  • the second retaining strap 19b has a third edge 55 and a fourth edge 57.
  • the third edge 55 is connected to the open edge 25 with at least one third predetermined breaking web 59 and the fourth edge 57 can be detached from the guarantee ring 17 by at least one fourth predetermined breaking web 61 tied together.
  • the guarantee ring 17 is held on the open edge 25 with a plurality of guarantee bars 63 .
  • the guarantee webs are preferably arranged at equal intervals on the guarantee ring 17 . It goes without saying that the areas on the guarantee ring 17 which are occupied by the first and the second retaining strap 19a, 19b are free of guarantee webs 63.
  • first and the second retaining strap 19a, 19b has a width of between 4 mm and 5 mm so that it is sufficiently stable.
  • the threaded part 15 is in a closed position in which it is pressed or screwed onto the spout 29 .
  • the first and second retaining straps 19a, 19b are pulled upwards in the axial direction and can also be stretched elastically if required, so that the threaded part 15 can be unscrewed from the spout 29 and folded away.
  • a first and a second recess 65 , 67 are provided on the anti-tamper ring 17 .
  • the first and second retaining straps 19a, 19b are accommodated in the first and second recesses 65,67. This makes it possible to use the first and second tether 19a, 19b to work out directly from the guarantee ring 17, for example by cutting out of the guarantee ring.
  • a circular arc-shaped web section 69 is formed, which preferably has the height of the guarantee ring 17. It can be seen in FIG. 5 that the web section 69 has a greater thickness than the rest of the anti-tamper ring 17 .
  • the thickness of the web section 69 is preferably 1.5 to 2 times the thickness of the rest of the guarantee ring 17. The transition from the web section and to the rest of the guarantee ring is continuous.
  • a first or second latching lug 71a, 71b protrudes adjacent to the first or third end 39,51.
  • a space 72 is inevitably present between the spaced-apart detents 71a, 71b. This is best seen in FIG.
  • a retaining web 73 is formed on the web section 69 and protrudes into the intermediate space 72 in the closed position.
  • the reinforced web section 69 gives the guarantee ring 17 sufficient stability so that it cannot be deformed when the threaded part 15 is unscrewed. This reliably prevents the guarantee ring 17 from being pulled off.
  • the holding web 73 centers the guarantee ring 17 on the spout by resting against the annular projection 35 (FIG. 4). This feature also prevents the guarantee ring 17 from being pulled off. Furthermore, the centering has the effect that all guarantee webs or predetermined breaking webs tear cleanly and the opening of the threaded part 15 is thereby reliably indicated.
  • the closure cap 11 can have a diameter of 20 mm to 40 mm and preferably of 25 mm to 35 mm.
  • the reinforced web section 69 and the retaining web 73 prevent the anti-tamper ring 17 from being unintentionally pulled off, in particular when the threaded part 15 is unscrewed for the first time, even if the closure cap has a large diameter of up to 40 mm.
  • first and second step 75a, 75b projecting radially outwards.
  • the first and second lugs 71a, 71b have a height between 4 and 10 mm and preferably between 5 and 7 mm.
  • the first and second steps 75a, 75b have a height between 1 and 3 mm and preferably between 1.5 and 2.5 mm. The height of the steps is kept as low as possible so that they do not protrude and pose a risk of injury to the user.
  • the steps enable the first and second latching lugs to latch stably on the external thread 31 in the open position and hold the threaded part 15 wobble-free in the open position.
  • the height of the latching lugs and the length of the first and second retaining straps are dimensioned in such a way that the threaded part is held stably in the open position and does not interfere with filling material being poured out of the container.
  • a first and second recess 77a, 77b are provided on the web section 69, into which the first and the second latching nose 71a, 71b protrude in the closed position and between which the retaining web 73 rises.
  • the latching lugs can have the necessary height to generate sufficient stability in the open position.
  • the indentations are so small that the web section 69 is not weakened.
  • the first and third ends 39, 51 are articulated to the open edge 25 with a first and second hinge 79a, 79b.
  • the hinges allow the threaded part 15 to be moved into the open position precisely and yet smoothly, in that the threaded part 15 can be pivoted relative to the first and the second retaining strap 19a, 19b.
  • the first and third ends 39.51 are connected to the guarantee ring 17 with a second and a fourth predetermined breaking web 49.61.
  • the holding web 73 is releasably connected to the open edge 25 by a fifth predetermined breaking web 81 .
  • This provides a stable support in the area of the web section 69 in the axial direction.
  • the closure cap 11 can therefore be pressed onto the spout 29 without parts of the closure cap 11 being damaged.
  • further first, second, third and fourth predetermined breaking webs can be provided on the retaining straps 19a, 19b.
  • the closure cap 11 Since the closure cap 11 is rotationally symmetrical, it has a center 83.
  • the center 83 lies in the imaginary plane between the open edge 25 and the guarantee ring 17.
  • the first end 39 and the third end 51 close a first opening angle 85 of at least 25 degrees and at most 50 degrees and preferably at least 35 and at most 45 degrees with respect to the center 83 as the apex.
  • the second end 41 and the fourth end 53 enclose a second opening angle 87 of at least 180 degrees and at most 220 degrees and preferably at least 190 and at most 210 degrees with respect to the center point 83 as the apex.
  • the first end 39 and second end 41 enclose a third included angle 89 of at least 40 degrees and at most 70 degrees and preferably at least 50 and at most 60 degrees with respect to the center of the closure cap as the vertex.
  • the third end 51 and the fourth end 53 enclose a fourth opening angle 91 of at least 40 degrees and at most 70 degrees and preferably at least 50 and at most 60 degrees with respect to the center point 83 as the vertex.
  • the sum of the first, second, third and fourth opening angles must be 85,87,89,91 360 degrees, since the first, second, third and fourth opening angles have the circle center 83 as their apex.
  • the third and fourth opening angles 89.91 are expediently of the same size, which means that the first and the second retaining strap 19a, 19b are of the same length.
  • the first and the second retaining strap 19a, 19b are preferably worked out of the guarantee ring 17.
  • the closure cap 11 can therefore act as a so-called “cone sealer” and reliably seals the spout 29 .
  • the closure cap 11 is made of a plastic.
  • Preferred plastics include PP and HDPE.
  • a sealing cone 93 is formed in a known manner on the bottom 21 of the threaded part 25, which sealingly interacts with the pouring spout 29 in the closed position (FIG. 5).
  • the pouring opening 33 is closed by the closure cap 11 and the closure cap 11 is in the closed position.
  • the first, second, third and fourth predetermined breaking webs 47,49,59,61 and the guarantee webs 63 break that all ridges tear cleanly and that the guarantee ring is reliably prevented from being pulled off the spout when unscrewing.
  • the threaded part 15 can be pivoted into the open position about the hinges 79a, 79b.
  • the retaining lugs 71a, 71b are in a position in which it is self-explanatory that they are to be latched onto the external thread 31.
  • the threaded part In the open position, the threaded part is held captive on the spout 29 and does not get in the way when filling is poured out.
  • Through the latch is the guarantee ring 17 fixed to the spout in the direction of rotation and cannot be twisted. This prevents the closure cap 11 from twisting when it is poured into the flow of filling material.
  • the two latching lugs 71a, 71b do not rub against the external thread 31, but merely brush against the inside of the thread, because they are not positioned centrally between the retaining straps 19a, 19b. This makes it easier to return the threaded part from the open position to the closed position.
  • the striping is due to the large gap 72 between the two detents. If, instead of the intermediate space 72, a detent nose arranged centrally between the retaining straps 19a, 19b were formed on the threaded part 15, this would lead to friction.
  • the projections 37 can be designed according to the following description of the figures 9 and 10.
  • Slots 97 are provided on the guarantee ring distributed over the circumference of the guarantee ring 17 .
  • the slots 97 each have an upper edge 99 and a lower edge 101 .
  • the upper edge 99 is formed by a section of the anti-tamper ring 17 in the shape of a circular arc.
  • the lower edge 101 corresponds to the free edge of a wall section 103 inclined inwards in the radial direction. Due to the inner inclination of the wall section 103, the lower edge 101 has a smaller radius than the guarantee ring 17 and can therefore strike an abutment (annular projection 35) of the spout 29. when the threaded portion 15 is unscrewed from the spout 29.
  • the abutment is realized by the annular projection 35 which is formed below the external thread 31 on the spout 29 .
  • the threaded part 15 is unscrewed, the lower edge 99 grips the projection 35 in a form-fitting manner, as a result of which the guarantee ring 17 is reliably held on the annular projection 35 even under high axial forces.
  • Each wall section 101 has a first section 105 and two second sections 107 .
  • the first partial section 105 represents a jacket section that is folded inwards and is preferably flat.
  • the second sub-sections 107 adjoin the inward-facing sides of the first sub-section 105 and connect it to the guarantee ring 17.
  • the second sub-sections 107 can be curved or flat and face one another at an angle inwards.
  • the lower edge 101 of the slot 97 corresponds to the free edges of the first section 105 and the second sections 107 and lies in a plane 109 which is shown in Figure 10 is shown.
  • the plane 109 is preferably oriented perpendicular to the axis of rotation 110 of the spout 29 .
  • guarantee ring 17 can be easily removed from the mold and can be pressed onto the spout 29 together with the threaded part 15 with little force. Due to the flexibility of the wall section 103, it can be removed from an injection mold and pressed onto the spout 29 without the risk of the wall section 103 being damaged.
  • the inclined wall sections 103 have a reduced wall thickness compared to the rest of the anti-tamper ring 17 .
  • FIG. 10 shows that the area of the lower edge 101 has the smallest wall thickness. As a result, the flexibility of the wall section 103 described above is further improved radially outwards. The wall thickness of the wall section 103 increases linearly downwards, starting from the lower edge 101 .
  • a first and second angle of inclination 113,115 are entered in FIG.
  • the first angle of inclination 113 indicates the inclination of the first section 105 relative to the plane of the lower edge 101 .
  • the first angle of inclination 113 has a magnitude between 60 and 80 degrees and preferably between 65 and 75 degrees. The larger the first angle of inclination 113, the better the stability of the wall sections 103 against vertical forces or axial tensile forces caused by unscrewing the threaded part 15. However, the first angle of inclination 113 must not be too large, otherwise the annular projection 35 will not can be adequately undercut.
  • the second angle of inclination 115 indicates the inclination of the slot 97 with respect to the plane of the lower edge 111 .
  • the straight connecting line 117 which represents the inclination of the slot 97, is a connection between the upper edge 99 and the lower edge 101 in a plane which is spanned by the axis of rotation 110 and the straight connecting line 117.
  • the second angle of inclination 115 is enclosed by the straight connecting line 117 and the plane 109 .
  • the second angle of inclination 115 has a magnitude between 30 and 50 degrees and preferably between 35 and 45 degrees. The greater the second angle of inclination 115, the easier it is for the guarantee ring 17 to be removed from the mold.

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

Abstract

L'invention concerne un capuchon de fermeture (11) conçu pour fermer l'ouverture de déversement d'un récipient, comprenant une partie filetée (15) cylindrique comportant un bord (25) ouvert, une première surface latérale (23) cylindrique et un filetage intérieur formé sur la face interne de la surface latérale (23) qui peut coopérer avec un filetage extérieur d'un bec verseur délimitant l'ouverture de déversement, une bague de garantie (17) conçue pour être maintenue sur une partie saillante formée sur le bec verseur, une pluralité d'éléments de liaison de garantie (63) reliant de manière libérable la bague de garantie (17) au bord (25) ouvert. Une partie de liaison (69) présente une épaisseur supérieure à celle du reste de la bague de garantie (17). Un premier ou un deuxième ergot d'arrêt (71a,71b) dépasse du bord (25) ouvert, un espace intermédiaire (72) étant formé entre le premier et le deuxième ergot d'arrêt (71a,71b), un élément de liaison d'arrêt (73) formé sur la partie de liaison (69) faisant saillie dans l'espace intermédiaire (72) dans la position de fermeture.
PCT/EP2023/050475 2022-01-14 2023-01-10 Capuchon de fermeture WO2023135140A1 (fr)

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CH000048/2022 2022-01-14
CH000048/2022A CH719360A1 (de) 2022-01-14 2022-01-14 Verschlusskappe.

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WO2023135140A1 true WO2023135140A1 (fr) 2023-07-20

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Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020227813A1 (fr) * 2019-05-13 2020-11-19 Husky Injection Molding Systems Ltd. Dispositif de fermeture d'un contenant

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020227813A1 (fr) * 2019-05-13 2020-11-19 Husky Injection Molding Systems Ltd. Dispositif de fermeture d'un contenant

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CH719360A1 (de) 2023-07-31

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