EP0149496B1 - Fermeture inviolable en matière plastique pour récipients - Google Patents

Fermeture inviolable en matière plastique pour récipients Download PDF

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Publication number
EP0149496B1
EP0149496B1 EP85100467A EP85100467A EP0149496B1 EP 0149496 B1 EP0149496 B1 EP 0149496B1 EP 85100467 A EP85100467 A EP 85100467A EP 85100467 A EP85100467 A EP 85100467A EP 0149496 B1 EP0149496 B1 EP 0149496B1
Authority
EP
European Patent Office
Prior art keywords
closure
pilfer
proof bottom
bottom portion
mouth
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP85100467A
Other languages
German (de)
English (en)
Other versions
EP0149496A2 (fr
EP0149496A3 (en
Inventor
Fumio Mori
Junichi Itsubo
Takashi Yazaki
Isao Ichinose
Katsuake Tanaka
Osamu Ishii
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.)
Nippon Closures Co Ltd
Original Assignee
Japan Crown Cork Co Ltd
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 JP59005756A external-priority patent/JPS60158048A/ja
Priority claimed from JP59138904A external-priority patent/JPS6121355A/ja
Priority claimed from JP59224126A external-priority patent/JPS61104959A/ja
Application filed by Japan Crown Cork Co Ltd filed Critical Japan Crown Cork Co Ltd
Publication of EP0149496A2 publication Critical patent/EP0149496A2/fr
Publication of EP0149496A3 publication Critical patent/EP0149496A3/en
Application granted granted Critical
Publication of EP0149496B1 publication Critical patent/EP0149496B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D41/00—Caps, e.g. crown caps or crown seals, i.e. members having parts arranged for engagement with the external periphery of a neck or wall defining a pouring opening or discharge aperture; Protective cap-like covers for closure members, e.g. decorative covers of metal foil or paper
    • B65D41/32—Caps or cap-like covers with lines of weakness, tearing-strips, tags, or like opening or removal devices, e.g. to facilitate formation of pouring openings
    • B65D41/34—Threaded or like caps or cap-like covers provided with tamper elements formed in, or attached to, the closure skirt
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • 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
    • B65D2401/00—Tamper-indicating means
    • B65D2401/15—Tearable part of the closure
    • B65D2401/30—Tamper-ring remaining connected to closure after initial removal
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D2401/00—Tamper-indicating means
    • B65D2401/15—Tearable part of the closure
    • B65D2401/35—Vertical or axial lines of weakness
    • 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
    • B65D2401/40—Bridges having different cross-sections

Definitions

  • This invention relates to a pilfer-proof plastic closure for containers, and more specifically, to a pilfer- proof plastic closure for application to a container of the kind referred to in the pre-characterizing portion of patent claim 1.
  • a closure is known from US-A-4 418 828.
  • Pilfer-proof metallic closures for containers holding various drinks have recently been superseded by pilfer-proof plastic closures.
  • a typical example of such plastic container closures is disclosed in JP-A-74445/1981 and US-A-4,418,828.
  • the closure disclosed in these patent documents has a top panel wall and a cylindrical skirt wall extending downwardly from the peripheral edge of the top panel wall.
  • a circumferentially extending breakable line is formed in the skirt wall to divide it into a main portion above the breakable line and a pilfer-proof bottom portion below it.
  • the circumferentially extending breakable line comprises a plurality of circumferentially extending slits spaced from each other in the circumferential direction and a plurality of bridging portions positioned among the circumferential slits.
  • An internal thread is formed on the inner surface of the main portion, and a plurality of radially inwardly projecting engaging flaps are formed on the inner surface of the pilfer-proof bottom portion at circumferentially spaced positions.
  • the plastic closure of the above structure is applied to a container equipped with a mouth-neck portion having an external thread formed on its peripheral surface and a holding jaw portion located beneath the external thread.
  • the closure is put over the mouth-neck portion and turned in a closing direction to fit the external thread of the mouth-neck portion in the internal thread of the closure.
  • the closure turns in the closing direction with respect to the mouth-neck portion and at the same time, moves axially downwardly.
  • the holding jaw portion formed on the outer surface of the mouth-neck portion interferes with the engaging flaps formed on the inner surface of the pilfer-proof bottom portion to elastically bend them radially outwardly.
  • the closure is turned in an opening direction which is reverse to the closing direction.
  • the internal thread of the closure is moved along the external thread of the mouth-neck portion, and therefore, the closure turns in the opening direction and simultaneously moves axially upwardly.
  • the pilfer-proof bottom portion of the closure cannot move axially upwardly because the engaging flaps formed on its inner surface engage the undersurface of the holding jaw portion of the mouth-neck portion. This results in a considerable stress on the bridging portions of the breakable line formed in the skirt wall of the closure.
  • the bridging portions are broken to separate the skirt wall into the main portion and the pilfer-proof bottom portion. Thereafter, the top panel wall and the main portion of the skit wall are removed from the mouth-neck portion. The mouth-neck portion thus opened, and the pilfer-proof bottom portion remains attached to the mouth-neck portion.
  • container closure of the above structure and function should meet the following two requirements. Firstly, in closing the mouth-neck portion of the container with the closure, the engaging flaps should be easily bendable elastically in the radially outward direction during their passage over the holding jaw portion, so as to mount the closure on the mouth-neck portion with a relatively low rotating torque and to accurately prevent generation of an excessive stress on the bridging portions of the breakable line which will result in its breakage.
  • the engaging flaps should fully accurately engage the holding jaw portion so as to accurately prevent the closure from slipping out of the mouth-neck portion without the breakage of the bridging portions of the breakable line as a result of the engaging flaps going past the holding jaw portion while being bent radially outwardly. It will be appreciated that if this slipping occurs, the pilfer-proof characteristics of the closure will be impaired.
  • each of the engaging flaps in its intirety is tilted in a direction opposite to the rotating direction of the closure during mounting on the mouth-neck portion of a container and extends continuously in a straight line from the inner surface of the pilfer-proof bottom portion.
  • a pilfer-proof plastic closure for a container equipped with a mouth-neck portion having an external thread formed on its peripheral surface and an holding jaw portion located below the external thread
  • said closure comprising a top panel wall and a cylindrical skirt wall extending downwardly from the peripheral edge of the top panel wall, said skirt wall having formed therein a circumferentially extending breakable line dividing the skirt wall into a main portion above the breakable line and a pilfer-proof bottom portion below it, said main portion having formed on its inner surface an internal thread to be engaged with the external thread on the mouth-neck portion of the container and said pilfer-proof bottom portion having formed on its inner surface a plurality of radially inwardly projecting engaging flaps at circumferentially spaced positions; characterized in that each of said engaging flaps having a first portion extending from the inner surface of the pilfer-proof bottom portion and a second portion further extending from the forward end of the first portion inclinedly to the first portion in the closing direction of the closure for mounting
  • FIG. 1 shows a closure blank to be processed into one embodiment of the closure constructed in accordance with this invention.
  • the blank shown generally at 2 which is formed from a suitable plastic material such as polypropylene or polyethylene by injection molding, compression molding, etc., has a circular top panel wall 4 and a cylindrical skirt wall 6 extending downwardly from the peripheral edge of the top panel wall 4.
  • An annular protrusion 8 is formed in the upper end portion of the inner surface of the skirt wall 6 so that it projects radially inwardly from the upper end portion.
  • a step portion 10 displaced diametrically inwardly.
  • a portion 12 above the step portion 10 has a considerable wall thickness, whereas the thickness of a portion 14 below the step portion 10 is decreased.
  • a step portion 16 is formed also on the inner circumferential surface of the skirt wall 6 below the step portion 10, and the portion 14 has a relatively thick portion 18 above the step portion 16 and a relatively thin portion 20 below the step portion 16.
  • the thickness t 1 of the portion 20 is sufficiently small, and preferably 0.05 to 0.75 mm, especially 0.20 to 0.50 mm.
  • the thickness t 2 of the relatively thick portion 18 is conveniently 0.50 to 1.10 mm, especially 0.75 to 0.85 mm. If desired, the thickness t 2 of the portion 18 can be made sufficiently small as in the portion 20 (therefore, the step portion 16 does not exist).
  • a raised and depressed or knurled portion 22 is formed on the peripheral surface of the portion 12 of the skirt wall 6 in order to prevent slippage of a finger which engages it.
  • An internal thread 24 is formed on the inner circumferential surface of'the portion 12 of the skirt wall 6.
  • a plurality of circumferentially spaced engaging flaps 26 are formed on the inner circumferential surface of the portion 14 of the skirt wall 6. Each of the engaging flaps 26 is projected radially inwardly from its base edge 28 connected to the inner circumferential surface of the portion 14. As will be clear from a description given hereinbelow, it is important that at least a greater portion of the base edge 28 of each of the engaging flaps 26 be positioned in the relatively thin portion 20 below the step portion 16 in the portion 14. In the illustrated embodiment, the upper end of the base edge 28 of each of the engaging flaps 26 is positioned in alignment with the step portion 16. Hence, the entire base edge 28 of each of the engaging flaps 26 is positioned in the relatively thin portion 20 betow the step portion 16.
  • each of the engaging flaps 26 is bent along a bending line 30 and defined by a first portion 32 extending from the base edge 28 to the bending line 30 and a second portion 34 extending from the bending line 30 to its free end.
  • the base edge 28 extends substantially parallel, and therefore substantially vertically, to the central axis 36 ( Figure 1) of the blank 2.
  • the base edge 28 may be inclined in a suitable direction with respect to the central axis 36 ( Figure 1) of the blank 2; namely it may be inclined downwardly at a suitable angle to the closing direction of the closure for mounting the closure on the mouth-neck portion of the container (the clockwise direction as viewed from above in Figure 1, the direction shown by arrow 36 in Figures 2 and 3) or in an opposite direction.
  • the first portion 32 is inclined in a direction opposite to the aforesaid closing direction and extends radially from the base edge 28.
  • the angle a of inclination of the first portion 32 to the inner surface of the portion 20 is preferably 5° £ ⁇ ⁇ 85°, more preferably 20° ⁇ a % 80°, especially preferably 30° ⁇ a % 70°. It is important that the second portion 34 extending radially inwardly from the bending line 30 should extend inclinedly with respect to the first portion 32 in the aforesaid closing direction.
  • the angle ⁇ of inclination of the second portion 34 to the first portion 32 is preferably 0° ⁇ ⁇ ⁇ 90°, more preferably 0° ⁇ ⁇ ⁇ 70°, especially preferably 5° ⁇ ⁇ ⁇ 45°.
  • the bending line 30 may extend substantially parallel, and therefore substantially vertically to the central axis 36 ( Figure 1) of the blank 2, or may be inclined downwardly approaching the inner surface of the portion 20. Preferably, it is inclined downwardly in a direction away from the inner surface of the portion 20.
  • the angle of inclination of the bending line 30 to the downward direction away from the inner surface of the portion 20 is preferably 5° ⁇ y % 80°, more preferably 10° ⁇ y % 60°, especially preferably 20° ⁇ y % 50°.
  • the upper edge 38 of the first portion 32 conveniently extends downwardly inclinedly in a radially inward direction forming a gentle curve, and the upper edge 40 of the second portion 34 extends nearly horizontally.
  • the lower edge 42 of the first portion 32 and the lower edge 44 of the second portion 34 extend upwardly inclinedly in a radially inward direction.
  • the angle 5 2 of inclination of the lower edge 44 of the second portion 34 is slightly larger than the angle 6 1 of inclination of the lower edge 42 of the first portion 32.
  • the angle 6 1 of inclination is 10° ⁇ ⁇ 1 ⁇ 30°
  • the inclination angle 6 2 is 20° % ⁇ 2 ⁇ 50°.
  • a circumferential breakable line 46 is formed in the blank 2. As shown in Figure 4, the circumferential breakable line 46 is disposed immediately below the step portion 10, and therefore, the portion 12 having a considerable thickness located above the step portion 10 constitutes a main portion of the skirt wall 6; and the portion 14 having a decreased thickness below the step portion 10 composed of the relatively thick portion 18 and the relative thin portion 20 constitutes a pilfer-proof bottom portion.
  • the circumferential breakable line 46 itself is comprised of a plurality of circumferentially spaced and circumferentially extending slits 50 and a plurality of bridging portions 52 located among the slits 50.
  • the portion 14, i.e. the pilfer-proof bottom portion 14 is connected to the portion 12, i.e. the main portion 12 of the skirt wall 6, via the bridging portions 52.
  • sealing liner 58 can be effected by a molding method known per se. Instead of forming the sealing liner 58 separately, a sealing protrusion of a suitable shape may be integrally formed on the inner surface of the top panel wall 4 of the blank 2.
  • the finished closure 60 so formed is applied to a container having a mouth-neck portion 62 of the form indicated in Figure 5.
  • a mouth-neck portion 62 of the form indicated in Figure 5.
  • an external thread 64 and a holding jaw portion 66 beneath it are formed on the cylindrical peripheral surface of the mouth-neck portion 62.
  • each of the engaging flaps 26 When the internal thread 24 of the closure 60 is fully engaged with the external thread 64, each of the engaging flaps 26 completely goes past the holding jaw portion 66 and is released from interference by the holding jaw portion 66. As a result, the engaging flaps 26 are elastically returned to their original state.
  • the closure 60 is turned in the opening direction, i.e. counterclockwise as viewed from above in Figure 5.
  • the internal thread 24 of the closure 60 moves along the external thread 64 of the mouth-neck portion 62, and therefore, the closure 60 moves axially upwardly as it is turned.
  • the pilfer-proof bottom portion 14 cannot move axially upwardly since the engaging flaps 26 formed on its inner surface and engaged with the undersurface of the holding jaw portion 66 of the mouth-neck portion 62. Consequently, a considerable stress is generated on the circumferential breakable line 46, and more specifically on its bridging portions 52. The bridging portions 52 of the circumferential breakable line 46 are therefore broken.
  • the engaging flaps 26 engage the undersurface of the holding jaw portion 66 more strongly in the closure 60 improved in accordance with this invention than in the conventional closure in which the second portion 34 of each engaging flap 26 is not bent with respect to the first portion 32 but extends in a straight line with the first portion 32 as shown by the two-dot chain line in Figure 3.
  • the required upwardly rotating torque which must be exterted on the closure 60 of this invention when the engaging flaps 26 are passed in the elastically bent state over the holding jaw portion 66 in the axially upward direction is made considerably higher than that on the conventional closure.
  • the closure 60 is surely prevented from being removed from the mouth-neck portion 62 without the desired breakage of the breakable line 46, and the pilfer-proof characteristics of the closure 60 can be retained.
  • Ten blanks having substantially the same form as the blank 2 shown in Figures 1 to 3 were molded from polypropylene having a melt index of 2.0 and a density of 0.90.
  • Each blank has an internal thread inside diameter d of 25.4 mm, an upper portion outside diameter D of 30.0 mm and a total height H of 19.0 mm.
  • Each of the engaging flaps 26 formed on the inner surface of the portion 20 had the following specification.
  • the upper edge 38 of the first portion 32 was of an arcuate shape having a radius of 0.5 mm, and the upper edge 40 of the second portion 34 was substantially horizontal.
  • Each of the blanks was mounted on the mouth-neck portion 62 of a glass container having the form shown in Figure 6 and a nominal diameter of 28 mm, and the required downwardly rotating torque was measured.
  • each of the engaging flaps 26 formed on the inner surface of the portion 20 had the form shown by the two-dot chain line in Figure 3 (namely, the second portion 34 was not bent with respect to the first portion 32 but extended in a straight line with the first portion 32).

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

Claims (21)

1. Bouchon inviolable en matière plastique pour un récipient doté d'une partie de goulot-col présentant un filetage externe formé sur sa surface périphérique et d'une partie de bourrelet de retenue disposée au-dessous du filetage externe, ledit bouchon comprenant une paroi de panneau suipérieur (4) et une paroi de jupe cylindrique (6) s'étendant vers le bas à partir de la bordure périphérique de la paroi de panneau supérieur (4), une ligne de rupture s'étendant à la périphérie étant formée dans ladite paroi de jupe (6), divisant cette dernière en une partie principale (12) au-dessus de la ligne de rupture et une partie inférieure inviolable (14) au-dessous de celle-ci, un filetage interne étant formé sur la surface intérieure de ladite partie principale (12), pour venir en prise avec le filetage externe de la partie de goulot-col (62) du récipient et plusieurs pattes d'encliquetage (26), en sailie vers l'intérieur, étant formées sur la surface intérieure de ladite partie inférieure inviolable (14), en des emplacements espacés à la périphérie, caractérisé par le fait que chacune desdites pattes d'encliquetage (26) présente une première partie (32) s'étendant à partir de la surface intérieure de la partie inférieure inviolable (14) et une seconde partie (34) se situant dans le prolongement de l'extrémité avant de la première partie (32), en oblique par rapport à la première partie (32) dans le sens de fermeture du bouchon pour l'assemblage du bouchon sur la partie de goulot-col (62).
2. Bouchon selon la revendication 1, dans lequel la première partie (32) s'étend à partir de la surface intérieure de la partie inférieure inviolable (14) en oblique dans une direction opposée audit sens de fermeture.
3. Bouchon selon la revendication 2, dans lequel l'angle a d'inclinaison de la première partie (32) par rapport à la surface intérieure de la partie inférieure inviolable où la bordure de base (28) de la patte est positionnée, est 5° ≤ a < 85°.
4. Bouchon selon la revendication 3, dans lequel l'angle d'inclinaison est 20° ≤ α ≤ 80°.
5. Bouchon selon la revendication 4, dans lequel l'angle d'inclinaison est 30° ≤ α ≤ 70°.
6. Bouchon selon l'une des revendications 1 à 5, dans lequel l'angle β d'inclinaison de la seconde partie (34) par rapport à la première partie (32) est 0° < 13 ≤ 90°.
7. Bouchon selon la revendication 6, dans lequel l'angle d'inclinaison est 0° < β ≤ 70°.
8. Bouchon selon la revendication 7, dans lequel l'angle d'inclinaison est 5° ≤ β ≤ 45°.
9. Bouchon selon l'une des revendications 1 à 8, dans lequel une ligne de pliage (30) entre la première partie (32) et la seconde partie (34) s'étend vers le bas tout en étant inclinée à l'opposé de la surface intérieure de la partie inférieure inviolable (20), à l'endroit où la bordure de base (28) de la patte (26) rencontre lâ partie inférieure inviolable.
10. Bouchon selon la revendication 9, dans lequel l'angle y d'inclinaison de la ligne de pliage (30) par rapport à la direction opposée à la surface intérieure de la partie inférieure inviolable (20) est 5° ≤ y < 80°.
11. Bouchon selon la revendication 10, dans lequel l'angle y d'inclinaison est 10° ≤ y < 60°.
12. Bouchon selon la revendication 11, dans lequel l'angle y d'inclinaison est 20° ≤ γ ≤ 50°.
13. Bouchon selon l'une des revendications 1 à 11, dans lequel le bord supérieur (38) de la première partie (32) s'étend radialement vers l'intérieur tout en étant incliné vers le bas, et le bord supérieure (40) de la seconde partie (34) s'étend presque horizontalement.
14. Bouchon selon la revendication 13, dans lequel le bord supérieur (38) de la première partie (32) forme une légère courbe.
15. Bouchon selon l'une des revendications 1 à 14, dans lequel le bord inférieur (42) de la première partie (32) et le bord inférieure (44) de la seconde partie s'étendent vers l'intérieur tout en étant inclinés vers le haut.
16. Bouchon selon l'une des revendications 1 à 15, dans lequel une ligne de rupture axiale (48) est formée dans la partie inférieure inviolable (20) s'étendant vers le bas à partir de l'extrémité supérieure de la partie inférieure inviolable (20), mais n'existant pas dans au moins une plus grande zone de la partie inférieure inviolable (20), et au moins une plus grande partie de la bordure de base (28) de chacune des pattes d'encliquetage (20) est positionnée dans la zone de la partie inférieure inviolable (20) dans laquelle la ligne de rupture axiale (48) n'existe pas.
17. Bouchon selon la revendication 16, dans lequel une partie supérieure de la partie inférieure inviolable (20) présente une épaisseur relativement grande, et une partie inférieure présente une épaisseur relativement faible, et la ligne de rupture axiale (48) s'étend jusqu'à l'extrémité inférieure de ladite partie supérieure ou jusqu'à un point légèrement au-dessous de celle-ci.
18. Bouchon selon la revendication 16 ou 17, dans lequel la ligne de rupture axiale (48) est une fente ou une entaille, et à sa partie d'extrémité inférieure, l'épaisseur de la matière restante s'accroît progressivement au fur et à mesure qu'elle s'étend vers le bas.
19. Bouchon selon la revendication 17, dans lequel la partie inférieure relativement mince de la partie inférieure inviolable (20) présente une épaisseur t1 de 0,05 à 0,75 mm.
20. Bouchon selon la revendication 19, dans lequel l'épaisseur t1 va de 0,20 à 0,50 mm.
21. Bouchon selon l'une des revendications 16 à 20, dans lequel la ligne de rupture périphérique (46) se compose de plusieurs fentes (50) espacées à la prériphérie et s'étendant à la périphérie et de plusieurs parties de pontage (52) disposées entre les fentes périphériques, au moins l'une des parties de pontage étant une partie de pontage (52A) de forte résistance, présentant une résistance supérieure aux autres parties de pontage (52); et la ligne de rupture axiale (48) est disposée en étant adjacente à l'extrémité pariphérique de la partie de pontage (52A) de forte résistance tel qu'observée selon la périphérie.
EP85100467A 1984-01-18 1985-01-17 Fermeture inviolable en matière plastique pour récipients Expired - Lifetime EP0149496B1 (fr)

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
JP59005756A JPS60158048A (ja) 1984-01-18 1984-01-18 ピルフア−プル−フ特性を有する合成樹脂製容器蓋
JP5756/84 1984-01-18
JP59138904A JPS6121355A (ja) 1984-07-06 1984-07-06 ピルフア−ブル−フ特性を有する合成樹脂製容器蓋
JP138904/84 1984-07-06
JP59224126A JPS61104959A (ja) 1984-10-26 1984-10-26 ピルフア−プル−フ特性を有する合成樹脂製容器蓋
JP224126/84 1984-10-26

Related Child Applications (2)

Application Number Title Priority Date Filing Date
EP88116832A Division EP0308995A3 (fr) 1984-01-18 1985-01-17 Fermeture incrochetable en matière plastique pour récipients
EP88116832.2 Division-Into 1988-10-11

Publications (3)

Publication Number Publication Date
EP0149496A2 EP0149496A2 (fr) 1985-07-24
EP0149496A3 EP0149496A3 (en) 1987-05-27
EP0149496B1 true EP0149496B1 (fr) 1990-01-03

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Family Applications (2)

Application Number Title Priority Date Filing Date
EP88116832A Withdrawn EP0308995A3 (fr) 1984-01-18 1985-01-17 Fermeture incrochetable en matière plastique pour récipients
EP85100467A Expired - Lifetime EP0149496B1 (fr) 1984-01-18 1985-01-17 Fermeture inviolable en matière plastique pour récipients

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP88116832A Withdrawn EP0308995A3 (fr) 1984-01-18 1985-01-17 Fermeture incrochetable en matière plastique pour récipients

Country Status (3)

Country Link
EP (2) EP0308995A3 (fr)
KR (1) KR890002821B1 (fr)
DE (1) DE3575115D1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4121618A1 (de) * 1991-06-29 1993-01-14 Alcoa Gmbh Verpackwerke Kunststoff-verschluss fuer behaelter
US7077278B2 (en) 2001-06-18 2006-07-18 Bericap Holding Gmbh Screw cap comprising a tamper-evident band

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IT1191796B (it) * 1986-05-30 1988-03-23 Guala Angelo Spa Chiusura di garanzia,per bottiglie di liquori e simili
ES2016114B3 (es) * 1986-07-11 1990-10-16 Interplastic Ag Banda de seguridad en un cierre de tonel
GB8817365D0 (en) * 1988-07-21 1988-08-24 Metal Closures Ltd Container closure
FR2674823B1 (fr) * 1991-04-02 1993-07-16 Astra Plastique Bouchon a vis avec bague d'inviolabilite.
DK168887B1 (da) * 1991-09-20 1994-07-04 Dbi Plastics A S Beskyttelseshætte til beholderudtømningsventiler, navnlig anstikkerventiler på fadølfustager
US5413235A (en) * 1994-09-28 1995-05-09 Decelles; Gilles Tamper-evident closure
DE102005025581A1 (de) * 2005-06-01 2006-12-07 Bericap Gmbh & Co. Kg Verschlußkappe mit integriertem Garantieband und Verfahren und Vorrichtung zu deren Herstellung
BR302014001174S1 (pt) 2013-09-18 2015-05-12 Bericap Configuração ornamental aplicada em tampa
FR3015442B1 (fr) 2013-12-24 2016-02-05 Bericap Dispositif de bouchage articule avec indicateur de premiere ouverture
USD833278S1 (en) 2014-09-03 2018-11-13 Bericap Closure for a container

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DE2529306A1 (de) * 1975-07-01 1977-02-10 Obrist Ag Albert Verfahren und vorrichtung zur herstellung eines garantieverschlusses
FR2457813A1 (fr) * 1979-05-31 1980-12-26 Grussen Jean Capsule a vis en matiere plastique pour bouteilles
JPS5832105B2 (ja) * 1979-11-10 1983-07-11 日本クラウンコルク株式会社 ピルフア−プル−フ特性を有する合成樹脂製容器蓋
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AU560751B2 (en) * 1981-07-24 1987-04-16 H-C Industries Inc. Plastic bottle closure

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4121618A1 (de) * 1991-06-29 1993-01-14 Alcoa Gmbh Verpackwerke Kunststoff-verschluss fuer behaelter
US7077278B2 (en) 2001-06-18 2006-07-18 Bericap Holding Gmbh Screw cap comprising a tamper-evident band

Also Published As

Publication number Publication date
DE3575115D1 (de) 1990-02-08
EP0308995A3 (fr) 1989-04-05
EP0149496A2 (fr) 1985-07-24
KR890002821B1 (ko) 1989-08-04
KR850005356A (ko) 1985-08-24
EP0149496A3 (en) 1987-05-27
EP0308995A2 (fr) 1989-03-29

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