EP3995410A1 - Fermeture imperdable à angle d'ouverture stabilisé - Google Patents

Fermeture imperdable à angle d'ouverture stabilisé Download PDF

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Publication number
EP3995410A1
EP3995410A1 EP21195586.9A EP21195586A EP3995410A1 EP 3995410 A1 EP3995410 A1 EP 3995410A1 EP 21195586 A EP21195586 A EP 21195586A EP 3995410 A1 EP3995410 A1 EP 3995410A1
Authority
EP
European Patent Office
Prior art keywords
screw cap
separating web
bottle neck
cap
closure
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
EP21195586.9A
Other languages
German (de)
English (en)
Other versions
EP3995410C0 (fr
EP3995410B1 (fr
Inventor
Günter Krautkrämer
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.)
Bericap Holding GmbH
Original Assignee
Bericap Holding GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from DE102018128886.7A external-priority patent/DE102018128886A1/de
Application filed by Bericap Holding GmbH filed Critical Bericap Holding GmbH
Priority claimed from EP19802116.4A external-priority patent/EP3880574B1/fr
Publication of EP3995410A1 publication Critical patent/EP3995410A1/fr
Application granted granted Critical
Publication of EP3995410C0 publication Critical patent/EP3995410C0/fr
Publication of EP3995410B1 publication Critical patent/EP3995410B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D41/00—Caps, e.g. crown caps or crown seals, i.e. members having parts arranged for engagement with the external periphery of a neck or wall defining a pouring opening or discharge aperture; Protective cap-like covers for closure members, e.g. decorative covers of metal foil or paper
    • B65D41/32—Caps or cap-like covers with lines of weakness, tearing-strips, tags, or like opening or removal devices, e.g. to facilitate formation of pouring openings
    • B65D41/34—Threaded or like caps or cap-like covers provided with tamper elements formed in, or attached to, the closure skirt
    • B65D41/3423—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
    • 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
    • B65D5/00—Rigid or semi-rigid containers of polygonal cross-section, e.g. boxes, cartons or trays, formed by folding or erecting one or more blanks made of paper
    • B65D5/42—Details of containers or of foldable or erectable container blanks
    • B65D5/72—Contents-dispensing means
    • B65D5/74—Spouts
    • B65D5/746—Spouts formed separately from the container
    • B65D5/747—Spouts formed separately from the container with means for piercing or cutting the container wall or a membrane connected to said wall
    • B65D5/748—Spouts formed separately from the container with means for piercing or cutting the container wall or a membrane connected to said wall a major part of the container wall or membrane being left inside the container after the opening
    • 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
    • B65D2251/00—Details relating to container closures
    • B65D2251/10—Details of hinged closures
    • B65D2251/1008—Means for locking the closure in open position
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D2401/00—Tamper-indicating means
    • B65D2401/15—Tearable part of the closure
    • B65D2401/30—Tamper-ring remaining connected to closure after initial removal

Definitions

  • the present invention relates to a captive closure consisting of a screw cap, which has at least one cylindrical cap skirt with an internal thread and a circumferential guarantee strip at the lower, open end of the cap skirt, the guarantee strip being connected to the lower edge of the cap skirt via at least one easily tearable weakening line , whereby after tearing along the weakening lines, the anti-tamper strip remains inseparably connected to the cap jacket via retaining straps.
  • the present invention also relates to a combination of a container neck with an external thread and a corresponding screw cap.
  • Plastic products and corresponding plastic waste especially in the form of so-called microplastics, which are formed from plastic waste as a result of abrasion and decay, are increasingly the focus of public attention.
  • the screw caps to which the present invention relates are also made of plastic, typically polyethylene or polypropylene.
  • the deposit system introduced for one-way plastic bottles reduces the number of plastic bottles in the residual waste, which are instead recycled; However, this does not prevent that in many cases the caps of the bottles are not screwed back on after emptying, but are disposed of or thrown away separately and thus uncontrolled into the environment and, for example, into the sea on shores and beaches.
  • the so-called guarantee bands which are connected to the lower edge of a cap skirt via weak points, remain hanging on the bottle neck below a so-called pilferproof ring and already form a captive part of the closure.
  • a pilfer proof ring is typically a ring-shaped projection running below a bottle neck thread with an essentially flat or slightly conical underside, behind which radially inwardly projecting projections or parts of a guarantee band get caught, so that the guarantee band is held in place by the pilfer proof ring when a screw cap is unscrewed while the Tear the weak points provided between the guarantee band and the cap jacket.
  • connection between the guarantee band and the cap skirt remaining via the at least one retaining band is long enough to be able to completely lift the screw cap off the bottleneck mouth and move it laterally or tilt it away from the bottleneck opening.
  • the present invention is therefore based on the object of designing a captive screw cap with a guarantee band in such a way that the screw cap, after it has been unscrewed and loosened from the bottle neck opening, folds away into a position that does not interfere with further use of the bottle and with drinking or pouring out of the bottle or tilted and can remain there without additional measures.
  • the screw cap is also referred to here as a "cap" for short.
  • retaining straps are formed by two weakening lines, each interrupted at least once in the circumferential direction, which run at an axial distance from one another and partially overlap alternately in the circumferential direction, with interrupted sections of both weakening lines being bridged by the other weakening line at an axial distance.
  • the weakening lines can be cut or can also be produced by dividing lines with webs already formed in the injection molding tool.
  • the aforesaid discontinuous sections of the weakening lines are hereinafter referred to as "separating webs".
  • the separating web of the upper weakening line effectively forms an axial extension of the cylindrical cap skirt limited to a sector of the circumference.
  • the separating web of the lower weakening line forms an axial extension of a lower guarantee strip section which is held stationary on the bottle neck.
  • the "guarantee strip” is understood to be all sections at the lower edge of a closure cap skirt that extend axially below or from the cap thread beyond the Levels of the line of weakness corresponding to what is referred to herein as the upper line of weakness.
  • “Axially below” also includes the inwardly and upwardly angled section of a so-called flex strip, which forms an axial extension of the outer guarantee strip section during the production of the closure cap, even if parts of this angled flex strip section are on the inside of the cap above the Levels of the upper line of weakness can extend.
  • both separators are considered part of the guarantee band insofar as they are below the level of the upper weakening line, even if the separator of the upper weakening line is fixed to the lower edge of the cap skirt remains connected and detaches itself only along the lower weakening line from the parts of the guarantee band remaining stationary on the bottle neck.
  • This also applies analogously to the retaining straps, which are also below the level of the upper weakening line when the clasp is closed, but do not remain in this position during and after opening,
  • the guarantee band defined in this way consists of a part which remains stationary on the bottle neck and which - apart from rotation - remains immovable relative to the bottle neck, and movable parts such as the retaining bands and the upper separating web which, when opened, relative to the bottle neck stationary part and the bottle neck are movable, but remain connected to the stationary part.
  • the separating webs have ends in the circumferential direction which are each connected to one of the ends of the retaining straps over their axial width.
  • the separating webs have at least the same inner radius as the cap jacket.
  • the free end face of the upper separating web pointing axially downward is referred to as the lower edge, while the axial end region of the upper separating web that encompasses the edge is referred to as the "edge".
  • the sections of the weakening lines that overlap in the circumferential direction define the retaining straps as strip-shaped sections of the guarantee strip running in the circumferential direction between the weakening lines.
  • the cylindrical internally threaded cap skirt defines an axis of the closure and the bottle neck onto which a corresponding screw cap is screwed defines an axis of the bottle neck. When closed, these axes collapse.
  • a sufficient axial spacing of the weakening lines of, for example, at least 2 mm in their overlapping area leads to sufficiently strong retaining straps that do not tear up to a tensile force of 30 N and generally also up to 40 N. It is therefore not readily possible for an average consumer and in particular for children to tear off the screw cap from the part of the guarantee band held under the pilferproof ring by tearing the retaining bands. As a result, the cap, including the guarantee band, remains permanently connected to the bottle neck.
  • container and “bottle” are used synonymously in the context of the present invention, since the exact type of container is not important for the invention, as long as it only has a neck with an external thread, on which the closure or the screw cap of the closure fits.
  • each of the two weakening lines has exactly one separating web and the centers of the two separating webs are diametrically opposite one another.
  • the weakening lines have an axial spacing from one another in their overlapping areas.
  • the two weakening lines when the closure is unopened, the two weakening lines remain in the same axial position along their entire circumferential extent, but are in different axial positions between the two weakening lines.
  • the axial position of the weakening lines can also vary along their course in the circumferential direction, as long as this does not make the retaining straps too narrow and retain a sufficient tear strength of at least 30 N and preferably at least 40 N.
  • the top line of weakness defines a parting line between the bottom edge of the cap skirt and the tamper evident band.
  • the lower weakening line separates the guarantee strip along a peripheral section into a lower and an upper guarantee strip section, the upper guarantee strip section being firmly connected to the cap skirt in the area where the upper weakening line is interrupted and otherwise defining a section of the dividing line between the retaining straps and the lower guarantee strip section.
  • the tamper-proof band is a so-called flex band, which has a first, outer tamper-proof band part running as an axial extension of the cylindrical cap jacket and a second tamper-proof band part that is folded over radially inwards and upwards from the lower end of the first tamper-proof band part, the free, upward-pointing part of the tamper-proof band End has engagement elements for engagement with the underside of Pilferproofringe.
  • top and bottom are used here as they result from an orientation of the closure placed on the bottle neck opening of a bottle standing vertically.
  • the separation of the anti-tamper strip along the entire length of the weakening lines results in strip-shaped portions of the anti-tamper strip being produced in the overlapping area of the weakening lines due to their axial distance, which are referred to here as retaining strips.
  • These retaining straps connect the respective separating webs of the upper and lower weakening lines, with these separating webs in turn forming a connection to the cap jacket or to the first tamper-proof strap part, which is intended to remain stationary on a bottle neck.
  • the separating web of the lower weakening line also determines the length of the straps, but has no further function with regard to the stability of the open cap position.
  • the separating web of the upper weakening line contributes significantly to stabilizing a wide open state of the cap, depending on the configuration.
  • this upper divider is always meant.
  • This separating web forms an axial extension of the cap jacket and is firmly connected to it.
  • This separating web in the circumferential direction are each connected to one of the ends of the retaining straps.
  • the other end of the straps is connected to the ends of the lower divider in the circumferential direction
  • the cap After unscrewing and when the screw cap is then folded away or folded over, which remains connected to the bottle neck via the dividers and the retaining straps, the cap, after a pivoting movement of approx. 90°, comes into a position in which the pivoted with the cap lower edge of the separating web is moved radially inwards towards the bottleneck and the upper edge of the separating web directly adjoining the cap skirt is moved radially outwards away from the bottleneck.
  • the retaining straps between the two separating webs are thus twisted and hold the cap, or the separating web that lengthens the cap axially, in contact with the bottleneck.
  • the lower edge of the separating web or its lower edge is in contact with the bottleneck and forms a pivot point on the bottleneck, which, however, shifts in the axial direction during the pivoting movement on the bottleneck
  • the anti-tamper band initially offers no significant resistance during the folding movement of the screw cap and the radially pivoting of the lower edge of the divider towards the neck of the bottle.
  • the retaining straps are connected to the ends of the separating web over their entire width, the sections of the retaining straps that start directly at the upper end of the separating web are stretched somewhat more than the sections that start at the lower end of the separating web.
  • the axial height of the separating web between the pivot point and the upper attachment of the retaining straps thus forms a lever for the tensile force of the retaining straps, which supports the further opening movement of the cap when a dead center of the pivoting movement is exceeded at approx. 90°.
  • the cap achieves a stable opening angle of e.g. B. 140 ° compared to their starting position.
  • the tethers extend past the pilfer proof ring due to the upward movement of the screw cap with the top separator, which contributes to stretch and tension in the tethers.
  • the retaining straps i. H. the length of the overlapping areas of the two weakening lines, and also the axial height and circumferential length of the separating web are designed in such a way that an elongation of the bands remains in the elastic range and does not reach the yield point.
  • the elastic restoring forces due to the torsion of these retaining straps are relatively small in comparison to the force exerted by the straps in the direction of the neck of the bottle on the upper divider,
  • the axis of the closure cap which coincides with the axis of the bottleneck when the closure is closed, should assume a stable position after opening and folding over to the side, in which it is opposite is pivoted by at least 120 degrees, preferably by at least 140°, from the starting position or relative to the axis of the bottle neck.
  • each weakening line it is expedient, although not essential, for each weakening line to have exactly one separating web and for the center points of the separating webs to be diametrically opposite one another.
  • the separating web of the lower weakening line which is firmly connected to the rest of the guarantee band, limits the overlap between the upper and lower weakening line in one direction and the overlapping of the weakening lines determines the length of the retaining bands that connect the guarantee band remaining on the bottle neck to the screw cap jacket.
  • the separating web of the upper weakening line expediently extends over a circumferential angle of between 10° and 75°, preferably in the range between 20" and 60°.
  • An angle in this range ensures that the separating web is stable in itself and together with the cap skirt is folded over and when opening not only the cap skirt is bent over in relation to the separating web, and on the other hand this also ensures a sufficient force effect that holds the folded closure in its fully open position, for which the separating web must have a certain minimum length in the circumferential direction.
  • the separating web of the lower weakening line which is diametrically opposite the separating web of the upper weakening line, can extend over a circumferential angle of between e.g. 120° and 200°, preferably between 170° and 190°, with the difference in the circumferential angles of the upper and lower separating webs determining the length of the Defined tethers that extend between the remaining portion of the tamper evident band and the cap skirt.
  • the width of the separating web remaining on the cap skirt should preferably be at least half the width of the entire, intact, i. H. not yet severed along the weakening lines, so that the torsion of this relatively wide section compared to the rest of the guarantee band causes a corresponding difference in diameter and length between the radially inner, lower edge of the separating web and the upper edge of the separating web attached to the screw cap.
  • the width of the separating web remaining on the cap skirt should be at least 1.5 mm, preferably at least 2 mm and in particular about 3 mm or more.
  • the wall thickness of the anti-tamper strip is in a range between 0.3 and 0.8 mm, so it is clear that the forces generated in the band by twisting the separating web relative to the rest of the band are due, among other things, to the different inner and outer radius of the twisted anti-tamper strip sections (consisting of the tethers and the top divider), which is larger the wider the twisted section is.
  • the minimum width of the retaining straps measured in the axial direction depends, among other things, on the specific plastic material used and also on the wall thickness of the retaining straps. In one embodiment, the minimum distance between the weakening lines, which defines the minimum width of the retaining straps, should therefore be greater than 1 mm, preferably greater than 2 mm and in particular greater than 2.3 mm. An upper limit is defined in each case by the width of the guarantee band.
  • the retaining straps which are effectively formed as the sections of the guarantee strip running between the dividing lines, then have sufficient tear strength to prevent the screw cap from being violently torn off from the guarantee strip, at least by children's hands.
  • the retaining straps are preferably tear-resistant up to a tensile force of at least 30 N, preferably at least 40 N.
  • the combination according to the invention of a bottle neck with an external thread and a closure is characterized in that the outer diameter of the bottle neck above a pilfer proof ring, the inner diameter of the guarantee band, as well as the width, the circumferential extent and any thickening of the upper Dividers are coordinated so that after loosening and then folding the screw cap, the free lower edge of the divider engages with the neck of the bottle.
  • the retaining straps are twisted slightly. If a tilting angle of approx.
  • the cap with the separating web is moved past a dead center, so that the outside of the separating web then faces the outside of the bottle neck and the screw cap is folded over by more than 90° due to a certain tensile stress on the retaining straps position is stabilized.
  • the tipping or fold angle is defined herein as the angle between the axis of the bottle neck (which coincides with the axis of the closure when the neck of the bottle or container is closed by the closure) and the axis of the closure in the inverted condition.
  • the difference between the outside diameter of the bottle neck in an area above the pilferproof ring, in which the upper separating web of the guarantee band is located on the bottle neck after opening the cap, should be no more than 2.5 mm, preferably no more than 1.5 mm, smaller than the nominal Inner diameter of the guarantee band.
  • the "nominal inner diameter” refers to the inner diameter of the anti-tamper strip without any flexible strip section, which also corresponds in particular to the inner diameter of the cap in the region of the upper separating web before the weakening lines are severed
  • a small difference in diameter ensures that the lower edge of the separating web, which is firmly connected to the lower edge of the cap skirt and is located above the pilfer proof ring after the screw cap has been loosened, engages with the bottle neck even at a relatively small tilting angle and continues to do so If the dead center is exceeded, a force caused by this intervention acts between the bottle neck and the separating web, which holds and stabilizes the folded screw cap in the wide open position.
  • the pilferproof ring has a profile which is defined by a lower flank which, in an axial section, extends at at least 80° to the axis of the bottle neck, an area of maximum diameter and an upper flank, which extends at an angle of inclination ⁇ 90° relative to the axis of the bottle neck and below the thread of the bottle neck merges into the outer diameter of the bottle neck.
  • the upper flank or a section of the bottleneck extends above the upper flank of the profile of the pilferproof ring at least into one or up to an axial position that is reached by the lower edge (11a) of the upper separating web when the screw cap is in a maximum folded-down position.
  • This section has a larger outer diameter than the bottleneck (20) without a thread profile or in the thread root.
  • the difference in the outside diameter of the upper flank or the overlying section and the bottle neck diameter without thread profile, i. H. at the root of the thread should be at least 0.1 mm, preferably at least 0.3 mm and up to 1 mm in the variant described above.
  • the pilferproof ring has a triangular profile or a trapezoidal profile whose lower flank extends at an angle of 80° or more, i.e. perpendicular or almost perpendicular to the axis of the container neck and whose upper flank extends at an angle of about 30° or less to the axis of the container finish.
  • the flank Due to the small angle of the upper flank, the flank has a large axial extent and the area of a diameter defined by this flank that is larger than the bottle neck diameter mentioned above can easily extend beyond the opening and folding of a screw cap from the lower edge of the Separator swept area extend.
  • cylindrical neck section of the container neck on which the cylindrical external thread is provided, can generally have a slightly (by approx. 0.3 - 0.8 mm) larger diameter below the thread and above the pilfer proof ring than above, resulting in a still tighter engagement between the lower edge of the upper separating web and the bottle neck and thus tends to further increase the tilt angle between the axis of the bottle neck and the axis of the closure
  • the inner radius of the cap skirt has a greater difference to the outer radius of the bottle neck than with a shallower thread, since the inner radius of the cap skirt corresponds at least to the radius of the thread root of the screw cap, which in turn is slightly larger than the outer radius of the bottle neck thread.
  • another parameter of the shutter can be taken into account to ensure a sufficiently large and stable flip angle of the shutter in the open state, namely the radial thickness of the upper separator at its lower edge.
  • the separating web of the upper weakening line has a radial thickening at least on its free lower edge.
  • this lower edge in the closed state is thickened radially outwards.
  • this thickened area rests on the neck of the bottle above the pilferproof ring.
  • This thickening on the separating web compensates for at least part of the difference in radius between the bottle neck and the inner radius of the upper separating web, which, as explained above, is also increased because of the deeper thread.
  • the radial thickening is provided on the outside of the divider and at least in one or two positions in the region of its lower edge. After turning the cap over more than 90°, the radial thickening rests on the bottle neck or on the upper flank of the pilferproof ring.
  • the radial thickening on the separating web thus forces the area of the separating web lying radially inside the thickening - in relation to the cap - radially further outwards, especially at its lower edge with respect to the bottle neck, which effectively means that the part of the separating web imaginary without the thickening occupies exactly the same position and angular position as with a smaller radius difference between the bottle neck and the inside of the divider.
  • the wall thickness of the separating web is up to 1 mm due to a radial thickening of its lower edge, with “thickening” meaning the radial overhang of this area beyond the otherwise cylindrical surface of the anti-tamper strip.
  • this thickening is between 0.2 and 0.7 mm, in particular 0.2 to 0.4 mm.
  • the wall thickness of the anti-tamper strip—apart from the weakening lines— is essentially constant and equal to the wall thickness of the cap skirt.
  • the thickening can also extend over the entire guarantee strip section below the separating web, i.e. up to the lower edge of the guarantee strip and in particular also along the entire circumference of a lower guarantee strip section below a line and between the upper and lower weakening line and at a distance from this lies.
  • the radial thickening of the upper divider is particularly noticeable with larger thread depths on the bottle neck beyond 1.3 mm, such as threads of the widespread standard type PCO1881.
  • the thickening has a stabilizing effect on the folded position of the open cap and holds it Axis of the screw cap in the open state is tilted by more than 120°, preferably by more than 140°, relative to the axis of the bottleneck.
  • the closure part below the cap skirt is additionally divided into the elements stationary part, retaining straps and separating webs
  • both dimensions are in the range of 2 - 3 mm.
  • an axial width of about 2-3 mm then also remains for the stationary outer guarantee strap section. Any axial variation in the course of the weakening lines along their circumferential extension would therefore also be limited to an axial area with a maximum width of 1 mm for practical reasons. This would not change the basic function of a closure according to the invention and is therefore not discussed in detail here.
  • the stationary part forms a flex strip with the already described outer stationary section and a part folded inwards and upwards, which engages with the pilferproof ring of a bottle neck.
  • the closure is designed for use on an opening socket of a cardboard packaging.
  • Such a screw cap for cardboard packaging has a closure bottom part with a peripheral flange which can be connected in a sealed manner to the surface of a cardboard packaging, and a cylindrical pouring spout adjoining the flange, which has an upper outer opening and a lower inner opening, a screw cap with an internal thread, that can be screwed onto an external thread of the pouring spout, a cutting ring which is arranged in the pouring spout and has at least one cutting edge protruding axially inwards on its lower edge, as well as an axial lifting and driving device on the cutting ring and the screw cap, which has one on the inside of the Screw cap attached driver and an axial lifting device, which moves the cutting ring axially in the direction of the lower opening and in the circumferential direction when turning the screw cap in the opening direction and thereby an at least partially circular circumferential cut in the container surface e brings in.
  • the object on which the invention is based is also achieved for such a closure in that the screw cap has a circumferential tamper-proof band on the lower edge of its cap jacket, which with an inner projection engages behind a pilferproof ring on the outside of the pouring spout below the pouring thread, the tamper-proof band being surrounded by two separate, partially circumferential and partially overlapping and non-intersecting cuts in the circumferential direction is partially divided and partially separated from the jacket of the screw cap, so that in the circumferentially overlapping areas of the cuts a retaining band is formed from parts of the anti-tamper strip, which External thread loosened screw cap on the lower part of the guarantee band remaining divided at the closure.
  • the cutting ring has on its outside a second external thread in the opposite direction to the external thread of the pouring spout, which engages with a matching second internal thread on the inside of the pouring spout,
  • the second internal thread and the second external thread can have a larger pitch than the internal thread of the screw cap and the external thread of the pouring spout, with the factor between the different pitches preferably being at least 1.5
  • the driver of the screw cap can be designed as a lifting cam with a surface or edge inclined to the closure axis and an element of the cutting ring as a cam follower, and radially overlapping guide elements can be provided on the outside of the cutting ring and on the inside of the pouring spout, the guide elements at the beginning of an opening rotation of the screw cap only allow an axial movement of the cutting ring and only after reaching a predeterminable axial position of the cutting ring allow the cutting ring to be carried along in the circumferential direction and limit further axial movement,
  • the closure according to the invention consists of a screw cap 10 with a guarantee band, the screw cap 10 essentially consisting of a cap jacket 2 and a head plate 1 which closes the cylindrical cap jacket 2 at the top. At the lower end of the cap jacket 2 there is a tamper evident band 3 which cannot be completely separated from the screw cap 10 in the case of the closure according to the invention.
  • a weakening line can generally be a circumferential, uniform material weakening, which can be produced, for example, by an incision that does not completely penetrate the material of the guarantee band 3 or the transition to the cap jacket 2, or it can be a cut that completely penetrates the wall thickness of the guarantee band 3 Incision, which is interrupted at individual points by easily breakable bridges.
  • the present invention deviates from this usual form of screw caps with tamper-proof band in that it has two weakening lines 13,14, which are spaced apart in the axial direction and, on the other hand, do not extend over the entire circumference of the tamper-proof band, but in an upper one Separating web 11 of the upper weakening line 13 and in a lower separating web 12 of the lower weakening line 14 are interrupted.
  • the figure 2 is side view of the breech figure 1 to recognize and figure 3 shows a development of the guarantee strip 3 over 360°, ie the ends of the guarantee strip shown on the right and left at 0° and 360° abut one another and are connected, so that the guarantee strip has a ring shape overall.
  • the separation in this developed view divides the separating web 12 into two parts, although it is actually a single, continuous separating web.
  • the interruption lines 13, 14 are of different lengths, but are arranged in such a way that they overlap the separating web 11 or 12 of the respective other weakening line. It is expedient here if the centers of the separating webs 11, 12 are diametrically opposite one another, as in the present case at 0° and 180° in figure 3 .
  • the retaining straps 15,16 formed in the overlapping area of the weakening line form an essentially tear-resistant connection between the broken areas 11,12 .
  • the interrupted area 11 is connected to the lower edge of the screw cap and the interrupted area 12 is connected to the part of the anti-tamper strip 3 that remains in its original position and is located below the weakening line 14 .
  • the part of the anti-tamper strip 3 remaining below the weakening line 14 forms, together with the interruption area 12, a completely circumferential fastening strip between the screw cap and the neck of the container that engages with the bottle neck.
  • the interruption areas 12 and 11 are each connected to one another by remaining retaining straps 15,16, which are created by the overlapping portions of the two weakening lines 13,14, so that effectively the screw cap 10 via the retaining straps 15,16 with the lower portion of the guarantee band and thus remains connected to the neck of the bottle and is therefore captive.
  • Figure 4C shows a state in which the screw cap 10 has already rotated by more than 90° compared to the starting position in Figure 4A is tilted or folded over.
  • the tilt angle is defined as the angle between the axis 50 of the container neck and the axis 50' of the cylindrical internal thread of the cap skirt 2, which coincide when the cap is closed on the bottle neck, while in the case of the open cap according to Figure 4C the axes 50, 50', starting from the closed position, have been tilted by approximately 150° relative to one another.
  • the interruption area 11 which simply represents a relatively stable, axial extension of the cap jacket 2 due to the connection with the cap jacket.
  • this divider11 in Shape of a strap-like extension tilted together with the stable closure jacket and has in Figure 4C a horizontal position (perpendicular to the axis 50) is already slightly exceeded, with the straps 15,16 being twisted accordingly.
  • the lower edge 11a of the separating web 11 engages with the outside of the bottleneck 20, since the edge 11a due to the tilting of the screw cap and also because of its axial displacement beyond the Pilferproofring 21 and because of the twisting of the retaining straps 15,16 on a smaller Radius is constrained as per the condition Figure 4A .
  • An upper flank of the pilfer proof ring 21 which is inclined by approximately 30° or a little less relative to the closure axis 50 supports the folding movement of the separating web 11 when it slides onto the upper flank of the pilfer proof ring 21
  • the two retaining straps 15, 16 are twisted and the axial displacement of the upper separating web 11 of the anti-tamper strip also leads to an effective reduction in the diameter of the anti-tamper strip including the separating web 11, particularly in the area of the lower edge 11a.
  • This lower edge 11a of the separating web 11 therefore comes into contact and frictional engagement with the outside of the bottle neck 20, the force occurring between the bottle neck 20 and the separating web 11 or the edge 11a being at its maximum when the separating web 11 is approximately horizontal, i. H. perpendicular to the axis 50 of the bottleneck.
  • the straps 15,16 are then under tension.
  • the cap skirt is sufficiently distant from the bottle neck opening that liquid is both poured from and directly from the bottle can be drunk without the screw cap still held on the bottle neck having a disruptive effect.
  • the screw cap 10 is preferably tilted in such a way that it is in a sufficiently stable position and the cap skirt 2 is as far away from the bottleneck opening as possible.
  • the Pilfer proof ring 21 on the bottle neck 20 can also be designed in accordance with the present invention in such a way that the screw cap 10 is pressed radially outwards when it is folded over and this leads to a stronger torsion of the retaining straps 15, 16 and consequently to an increase in the tilt angle.
  • Figure 12 shows a side view of a breech which is in an inverted position.
  • the area in which the separating web 11 engages with the bottleneck 20, more precisely with the pilfer proof ring 21, is shown in a cross-sectional view and enlarged in FIG Figure 6A shown.
  • the profile of the pilfer proof ring 21 is essentially triangular.
  • the profile can also be described as nose-shaped.
  • a lower flank 22 of the pilferproof ring extends almost perpendicularly to the axis of the container neck 50.
  • this lower flank 22 converges with an upper flank 24 in a region of the maximum diameter.
  • the area of the maximum diameter is designed here as a rounded edge, which is also referred to here as a ridge 23 running between the lower flank 22 and the upper flank 24 .
  • the upper flank 24 is at the in Figure 6A embodiment shown clearly flatter compared to the bottle neck 20 employed as the lower edge. In this case, the upper flank extends at an angle of approximately 30° to the axis of the container neck 50.
  • the upper separating web 11 is now lifted over the ridge 23 in which the pilferproof ring 21 has its maximum diameter.
  • the retaining straps 15 and 16 are twisted, and the lower edge 11A of the separating web 11 slides onto the upper flank 24 of the pilferproof ring 21.
  • the separating web 11 is held further radially to the outside by the larger diameter D of the upper flank 24 compared to the outer bottle neck diameter d in the area swept by the lower edge 11A of the separating web 11 than would be possible with the bottle neck diameter d, which is otherwise between the pilfer proof ring 21 and Thread 25 and also at the root of the thread is available.
  • the tilt angle is about 150 °.
  • FIG. 6B Another profile of a Pilferproofring 21 is in Figure 6B shown.
  • the upper flank 24 is set flatter than the bottleneck 20 in this case.
  • the upper flank encloses an angle of approximately 10° with the axis 50 of the container neck.
  • the upper flank 24 extends over a larger axial section of the bottle neck 20.
  • Such a profile of Pilferproofringes 21, as in the Figures 6A or 6B is shown, it can be specified structurally that the separating web 11 or its lower edge 11a remains on the upper flank 24 and is therefore on a larger radius than without the axially extended flank 24 (because of the smaller angle to the axis 50).
  • the pilferproof ring 21 has such a profile according to the invention or the bottle neck has corresponding additional elements above the pilferproof ring.
  • the profile is similar to a trapezium, with the lower flank 22 extending almost perpendicularly to the axis of the container neck 50 and the upper flank 24 at an angle of approximately 45° to the axis of the container neck 50 .
  • the area of maximum diameter 23 extends axially upwards so far that the separating web 11 remains largely below the upper flank 24 and is thus pressed radially outwards and, in contrast to contact with the smaller (outside) diameter d of the bottle neck 20, in turn increases the tilting angle of the Screw cap 10 enlarged
  • FIG 8A a profile of a pilfer proof ring 21 is shown, which corresponds to the profile from the lower area Figures 5 and 6A resembles.
  • the upper flank 24 at the in Figure 8A The embodiment shown merges into a short, cylindrical upper end section 24B, which defines a diameter D that is larger than the smaller diameter d of the bottleneck and against which the separating web 11 or its lower edge rests when the screw cap 10 is folded over. This ensures in particular that the screw cap 10 subsequently has a larger tilting angle in a sufficiently stable end position.
  • FIG. 8B Another alternative is in Figure 8B shown.
  • the bottle neck has an annular projection 26 which is arranged circumferentially above the upper flank 24 of the pilfer proof ring 21 on the bottle neck.
  • the axial position of the projection 26 is matched to the closure or the screw cap with the separating web 11 that this or its lower edge 11a abuts the projection 26 from below and the screw cap is thus held in the immediate vicinity of the pilfer proof ring.
  • the bands 15 could pull the upper separating web and thus the entire screw cap up a little until the edge of the separating web abuts against the thread.
  • FIG Figure 12 shows another screw cap according to the present invention, partly in section.
  • the screw cap 10 has the anti-tamper strip 3 on its lower edge and a detail A shown in section of the lower area of the screw cap including the part of an associated bottle neck 20 is shown as an enlarged detail in FIG Figure 9A shown separately.
  • the screw cap 10 in the Figures 9, 9A and 10, 10A is the in the Figures 5 and 6A already very similar to the screw cap shown, with the exception of the fact that at least the separating web 11 has a radial thickening 11b at its lower edge, which in the present case also extends axially below and at the level of the thickening of the separating web 11 over the entire circumference of the anti-tamper strip 3 .
  • the guarantee band has a greater wall thickness than in the case of the Figures 5 and 6 ,
  • the thickening 11b on the lower edge of the separating web 11 has the purpose of keeping the open screw cap wide open even when using a thread with a thread depth of more than 1.3 mm, as is the case, for example, in figure 10 is shown.
  • the upper line of weakness 13 is because of the cutting plane figure 9 not present in the area of the separating web 11.
  • the separating web 11 is thus continuously connected to the cap jacket 2.
  • the axial position of the upper weakening line would be approximately level with the maximum diameter of the pilfer proof ring 21.
  • the fastening part of the anti-tamper strip is formed by a flex strip. This consists of a radially inner, upwardly folded part 3a and a radially outer flexible strip section 3b, which remains stationary on the bottle neck even after the closure has been opened.
  • Figure 10A recognizes which gem an enlarged detail of the closure in the unfolded position.
  • figure 10 shows, the radial thickening 11b, which rests here in the area of the transition between the upper flank of the pilferproof ring 21 and the bottleneck section above it, causes the imaginary radially inner part 11c of the separating web 11 (which corresponds to a separating web without thickening), and in particular its lower edge is pressed more radially outwards by the bottle neck 20 than if the thickening 11b were not present.
  • the screw cap 10 remains in a stable, widely folded position, for example by 140°.
  • FIGS 11 - 15 each show the same embodiment of a closure for cardboard packaging, in particular beverage cartons, and are therefore described in connection with one another.
  • a lower closure part which is denoted overall by 40 and consists of a flange 31 with a pouring spout 32 attached thereto.
  • the pouring spout has an upper opening and a lower opening (not visible here) which, when the closure is on a carton package, is initially sealed by the surface of the carton material to prevent any contamination of the container contents.
  • the flange 1 is glued or welded onto a cardboard 45, the welding on requiring that the cardboard material 45 is provided with a suitable surface coating (e.g. polyethylene).
  • a suitable surface coating e.g. polyethylene
  • the lower part 40 of the closure has an external thread 42 onto which the internal thread 41 of a screw cap 10 can be screwed.
  • the pouring spout 40 also has a further internal thread 31, into which a matching external thread of a cutting ring 35 engages, which also axially protruding and in the closed state according to figure 1 cutters 33 lying just above the surface of the carton 45.
  • a driver 34 engages a mating counterpart 36 on the cutting ring 35 when the screw cap is rotated in the opening direction.
  • a fixing web 7 on the flange which is connected to the lower end of the anti-tamper strip 30 via two easily breakable bridges 6 .
  • the guarantee band shows how best to get in figure 2 recognizes two cutting lines 18, 19, either through weakened material of the anti-tamper strip 30 or, as in the present case, by continuous incisions which are only interrupted by other easily breakable bridges 36 which tear open when the screw cap is opened.
  • the lower cutting line 18 and the upper cutting line 19 overlap one another, in the present case along a circumferential angle of approximately 120°, and each have a lower interrupted section 12 and an upper interrupted section 11 .
  • the length of the straps 15,16 ie the length of the overlapping areas of the cutting lines is according to figure 4 adjusted so that the lower edge of the upper interruption section 11 when the screw cap 20 is open and folded over by about 150° engages with the outside of the pouring spout 40 and the retaining straps 15,16 are under tension, so that this position of the screw cap is caused by the train of the tethers and the abutment of the lower edge of the discontinuous portion 11 is retained by the screw cap 40 even if the pouring spout is tilted in any direction together with the corresponding container.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Closures For Containers (AREA)
  • Ceramic Engineering (AREA)
  • Clamps And Clips (AREA)
EP21195586.9A 2018-11-16 2019-11-06 Combinaison d'un col de récipient et d'une fermeture imperdable à angle d'ouverture stabilisé Active EP3995410B1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE102018128886.7A DE102018128886A1 (de) 2018-11-16 2018-11-16 Unverlierbarer Verschluss
DE102019120725 2019-07-31
PCT/EP2019/080338 WO2020099200A1 (fr) 2018-11-16 2019-11-06 Dispositif de fermeture imperdable présentant un angle d'ouverture stabilisé
EP19802116.4A EP3880574B1 (fr) 2019-11-06 Dispositif de fermeture imperdable présentant un angle d'ouverture stabilisé

Related Parent Applications (2)

Application Number Title Priority Date Filing Date
EP19802116.4A Division EP3880574B1 (fr) 2018-11-16 2019-11-06 Dispositif de fermeture imperdable présentant un angle d'ouverture stabilisé
EP19802116.4A Division-Into EP3880574B1 (fr) 2018-11-16 2019-11-06 Dispositif de fermeture imperdable présentant un angle d'ouverture stabilisé

Publications (3)

Publication Number Publication Date
EP3995410A1 true EP3995410A1 (fr) 2022-05-11
EP3995410C0 EP3995410C0 (fr) 2024-02-14
EP3995410B1 EP3995410B1 (fr) 2024-02-14

Family

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Family Applications (2)

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EP21195586.9A Active EP3995410B1 (fr) 2018-11-16 2019-11-06 Combinaison d'un col de récipient et d'une fermeture imperdable à angle d'ouverture stabilisé
EP23211240.9A Pending EP4303149A3 (fr) 2018-11-16 2019-11-06 Bouchon imperdable présentant un angle d'ouverture stabilisé

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP23211240.9A Pending EP4303149A3 (fr) 2018-11-16 2019-11-06 Bouchon imperdable présentant un angle d'ouverture stabilisé

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US (2) US20220002021A1 (fr)
EP (2) EP3995410B1 (fr)
CN (1) CN113015683A (fr)
BR (1) BR112021007456A2 (fr)
DE (1) DE202019005974U1 (fr)
WO (1) WO2020099200A1 (fr)

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US11312544B2 (en) * 2020-03-30 2022-04-26 ThisCap, Inc. Cap for container
US20220106081A1 (en) * 2019-01-30 2022-04-07 Sacmi Cooperativa Meccanici Imola Societa' Cooperativa A cap for closing a container, a combination of a cap and a neck
WO2020182854A1 (fr) 2019-03-11 2020-09-17 Alpla Werke Alwin Lehner Gmbh & Co. Kg Fermeture de contenant et contenant
EP4046933B1 (fr) 2019-07-22 2024-06-12 Sacmi Cooperativa Meccanici Imola Societa' Cooperativa Capuchon de contenant et son procédé de production
ES2964406T3 (es) * 2019-07-22 2024-04-05 Sacmi Tapa para cerrar un recipiente, una combinación de una tapa y un cuello
MX2022003784A (es) 2019-09-30 2022-04-25 Berry Global Inc Cierre retenible.
CN114746343A (zh) * 2019-11-29 2022-07-12 Sig技术股份公司 纸板/塑料复合包装件的带有用于牢固地紧固螺旋盖的锚环的可重新密封的倾倒元件
US20210221572A1 (en) * 2020-01-16 2021-07-22 Closure Systems International Inc. Package with tethered closure
US11718450B2 (en) * 2020-01-24 2023-08-08 Betapack, S.A.U. Capping device intended to be fixed on the neck of a container and an assembly comprising a container and a capping device
EP3854716A1 (fr) * 2020-01-27 2021-07-28 Elopak GmbH Dispositif de fermeture pour un emballage à base de papier ou de carton
WO2022064343A1 (fr) 2020-09-23 2022-03-31 Sacmi Cooperativa Meccanici Imola Societa' Cooperativa Capuchon pour récipient
US20220371785A1 (en) * 2021-05-24 2022-11-24 Richard D. Lohrman Modified Sidewall of Tethered Closure
IT202100017879A1 (it) * 2021-07-07 2023-01-07 Affaba & Ferrari S R L Tappo compatto ad apertura rapida e assieme tappo e imboccatura di contenitore
CN118119555A (zh) * 2021-07-12 2024-05-31 罗斯蒂集团股份有限公司 多部件封闭件
US20230055070A1 (en) * 2021-08-19 2023-02-23 Closure Systems International Inc. One-piece closure
TWI807437B (zh) * 2021-09-30 2023-07-01 宏全國際股份有限公司 切割連結蓋
WO2023081880A1 (fr) * 2021-11-08 2023-05-11 Silgan White Cap LLC Saillie sur le col d'un récipient
SE2251023A1 (en) * 2022-09-05 2024-03-06 Modulpac Ab Bottle closure and bottle provided with such closure
EP4361063A1 (fr) * 2022-10-28 2024-05-01 BERICAP Holding GmbH Fermeture munie d'un maillon et d'une paroi de guidage pour un récipient

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WO2009002057A2 (fr) * 2007-06-22 2008-12-31 Si Joong Kwon Contenant pourvu d'un bouchon anti-perte et anti-rotation
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EP3784587A2 (fr) 2018-04-26 2021-03-03 Obrist Closures Switzerland GmbH Bouchon

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WO1994014674A1 (fr) * 1992-12-21 1994-07-07 Zapata Industries, Inc. Fermeture en plastique inviolable
CN1830730A (zh) * 2005-01-01 2006-09-13 郭永军 铰接式防盗瓶盖
WO2009002057A2 (fr) * 2007-06-22 2008-12-31 Si Joong Kwon Contenant pourvu d'un bouchon anti-perte et anti-rotation
US20120285921A1 (en) * 2010-01-25 2012-11-15 Si-Joong Kwon Container for preventing loss of stopper and idle rotation thereof
US20120298666A1 (en) * 2010-01-28 2012-11-29 Si Joong Kwon Stopper for packaging container
JP2014031202A (ja) * 2012-08-03 2014-02-20 Nippon Closures Co Ltd 合成樹脂製容器蓋

Also Published As

Publication number Publication date
BR112021007456A2 (pt) 2021-07-20
WO2020099200A1 (fr) 2020-05-22
EP4303149A3 (fr) 2024-03-13
DE202019005974U1 (de) 2023-09-28
EP3995410C0 (fr) 2024-02-14
US20220002021A1 (en) 2022-01-06
CN113015683A (zh) 2021-06-22
EP3880574A1 (fr) 2021-09-22
EP4303149A2 (fr) 2024-01-10
US20230090849A1 (en) 2023-03-23
EP3995410B1 (fr) 2024-02-14

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