WO1998026991A1 - Couvercle de recipient inviolable en resine synthetique - Google Patents

Couvercle de recipient inviolable en resine synthetique Download PDF

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Publication number
WO1998026991A1
WO1998026991A1 PCT/JP1997/004649 JP9704649W WO9826991A1 WO 1998026991 A1 WO1998026991 A1 WO 1998026991A1 JP 9704649 W JP9704649 W JP 9704649W WO 9826991 A1 WO9826991 A1 WO 9826991A1
Authority
WO
WIPO (PCT)
Prior art keywords
strength
tamper
container lid
neck
breaking means
Prior art date
Application number
PCT/JP1997/004649
Other languages
English (en)
Japanese (ja)
Inventor
Yoshihiro Kaitsuka
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
Application filed by Japan Crown Cork Co., Ltd. filed Critical Japan Crown Cork Co., Ltd.
Priority to DE69726735T priority Critical patent/DE69726735T2/de
Priority to KR1019980706387A priority patent/KR100621295B1/ko
Priority to EP97949113A priority patent/EP0913334B1/fr
Publication of WO1998026991A1 publication Critical patent/WO1998026991A1/fr
Priority to US09/123,408 priority patent/US5957315A/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • 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
    • B65D41/3404—Threaded or like caps or cap-like covers provided with tamper elements formed in, or attached to, the closure skirt with ratchet-and-pawl mechanism between the container and the closure skirt or the tamper element
    • B65D41/3409—Threaded or like caps or cap-like covers provided with tamper elements formed in, or attached to, the closure skirt with ratchet-and-pawl mechanism between the container and the closure skirt or the tamper element 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
    • 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

  • the present invention relates to a synthetic resin applied to a container for storing beverages and the like, wherein a male thread and a locking jaw located below the male thread are formed on the outer peripheral surface of the mouth and neck. More particularly, the present invention relates to a synthetic resin container lid having a tamper-evident characteristic (a characteristic in which traces remain when the container lid is operated in order to make a mistake).
  • a tamper-evident characteristic a characteristic in which traces remain when the container lid is operated in order to make a mistake.
  • an external thread is formed on the outer peripheral surface of the mouth and neck portion and a locking jaw located below the external thread is formed on a glass or synthetic resin container for a soft drink or the like.
  • Applicable container lids include, for example, Japanese Patent Publication No. 58-321203, Japanese Patent Publication No. 62-18421, Japanese Patent Publication No. Synthetic resin container lids having tamper-evident properties, which are disclosed in JP-A-6-54544 and JP-A-8-80957, are widely used in practice.
  • Such a container lid has a circular top wall and a contact wall hanging from the top wall.
  • the skirt wall is formed with a circumferential breaking means extending in the circumferential direction, and the skirt wall is divided into a main portion above the circumferential breaking means and a tamper-evident hem below the circumferential breaking means. Has been done.
  • On the inner peripheral surface of the main part of the skirt wall there is formed a female thread cooperating with a male thread formed on the mouth and neck of the container.
  • Locking means cooperating with a locking jaw formed on the mouth and neck of the container is formed on the inner peripheral surface of the tamper evidence hem.
  • the circumferential breaking means includes a plurality of bridging portions which are arranged at intervals in the circumferential direction and connect the tamper-evident hem portion to the main portion of the skirt wall.
  • One of the sections is a high-strength bridge with a large cross-sectional area.
  • An axial breaking means is formed at the foot of the tamper evidence.
  • the axial breaking means may be based on a score formed by reducing the thickness of the material or a slit containing discontinuities (by completely cutting the material in its thickness direction or by cutting the material during molding).
  • the groove is formed by not existing in the entire thickness direction.
  • the locking means formed on the skirt of the evening evidence is locked on the locking jaw of the mouth and neck, the hem of the tamper-evident is prevented from rising.
  • stress is generated in the circumferential rupture means, and the bridge in the circumferential rupture means breaks except for one high-strength bridge.
  • the following behavior is intended to be generated: That is, the score at the axial breaking means formed at the tamper-evident foot is broken, or the discontinuous portion of the slit is broken, and the force, and thus the evening-foot dent, is unfolded in a belt shape. Accordingly, the locking of the locking means with the locking jaw is released, and after that, the entire container lid is lifted in accordance with the rotation in the opening direction and detached from the mouth and neck.
  • a single high-strength bridge in the circumferential breaking means breaks instead of breaking the discontinuous part of the score or slit in the axial breaking means Therefore, the non-continuous part of the score or slit remains without being broken, so that the hem of the tamper-evident, which is in the form of an endless ring, is completely separated from the main part of the skat wall, and the mouth of the container is opened.
  • the other part of the container lid is removed from the mouth and neck, leaving an endless annular tamper-evident hem at the neck.
  • the end of the tamper-evident in an annular endless form should be cut with appropriate cutting tools in view of the so-called material collection of waste or in order to reuse the container. It is necessary to separately perform the work of unrolling and removing from the mouth and neck of the container.
  • the tamper- It is contemplated that the axial breaking means disposed on the portion comprises a slit extending continuously from the upper end of the tamper-evident hem to substantially the lower end.
  • the axial breaking means disposed on the portion comprises a slit extending continuously from the upper end of the tamper-evident hem to substantially the lower end.
  • the axial breaking means provided on the tamper-evident hem is simply constituted by a slit extending continuously from the upper end to the substantially lower end of the tamper-evident hem, the mouth and neck of the container will not be provided.
  • the tamper-evident hem may be located in the area where the means for breaking in the axial direction exists. There is a tendency for an unacceptable and unacceptable situation in which at least some of the plurality of bridges in the circumferential breaking means are broken due to this.
  • a main object of the present invention is to provide a structure in which the axial breaking means provided on the tamper dent hem is constituted by a slit extending continuously from the upper end to the substantially lower end of the tamper dent hem. If the bridging part in the circumferential breaking means is broken except for one high-strength bridging part, the tamper-evident hem will inevitably expand in a belt shape, but the container When the container lid is attached to the mouth and neck, the evening skirt is expanded at the portion where the axial breaking means exists, and due to this, of the plurality of bridging portions in the circumferential breaking means.
  • An object of the present invention is to provide a new and improved synthetic resin container lid in which at least some of them are prevented from being broken.
  • two of the plurality of bridging portions are made to be high-strength bridging portions having a large cross-sectional area, and these two high-strength bridging portions are It is disposed on both sides of the upper end of the axial breaking means, which is composed of a slit extending from the upper end of the tamper evidence to the substantially lower end, and one of the high-strength bridging sections is located at the upper end of the axial breaking means or is
  • the one high-strength bridging portion extends from one end close to the one circumferential direction and the other high-strength bridging portion extends from the upper end of the axial breaking means or from one end close to the other circumferentially.
  • a male thread and a locking jaw located below the male thread are provided on the outer peripheral surface of the mouth and neck.
  • a female thread cooperating with the ridge is formed, and a locking means cooperating with the locking jaw of the neck portion is formed on the inner peripheral surface of the tamper-evident hem, and the circumferential break is formed.
  • the means includes a plurality of bridging portions disposed circumferentially spaced apart and connecting the tamper-evident hem to a main portion of the wall, and One is the first high-strength bridge having a large cross-sectional area, and the tamper-evident hem is provided with an axial breaking means.
  • the axial breaking means comprises a slit extending continuously from the upper end of the tamper-evident hem to the substantially lower end, and the plurality of bridging portions are connected to the first high-strength bridging portion.
  • the first high-strength bridge and the second high-strength bridge have a large cross-sectional area, and the first high-strength bridge and the second high-strength bridge have a circumferential direction.
  • the first high-strength bridging portion is disposed on both sides of the breaking means, and extends from the upper end of the axial breaking means or one end in a circumferential direction from one end adjacent thereto, and the second high-strength bridging portion is provided on the second height.
  • the strength bridging portion extends from the upper end of the axial breaking means or from one end close thereto to the other circumferential direction,
  • the female thread is screwed onto the male thread, and the locking means is locked to the locking jaw, whereby the female thread is attached to the neck portion, and the female thread and the male thread are screwed.
  • the joint is released and detached from the neck portion, at least one of the first high-strength bridge portion and the second high-strength bridge portion is broken,
  • a synthetic resin container lid is provided.
  • the cross-sectional area of the first high-strength bridge is larger than the cross-sectional area of the second high-strength bridge.
  • the second high-strength bridging portion is broken, but the first high-strength bridging portion remains without being broken, and the tamper-evident hem is unfolded in a belt shape to form the locking jaw.
  • the locking means is unlocked to the part, and the entire container lid including the tamper-evident hem is detached from the neck.
  • Cross-sectional area of the first high strength bridging portion is 1.5 0 to 4.5 0 ⁇ is 2, cross-sectional area of the second high strength bridging portion 0s.
  • the first high-strength bridging portion is located in the axial direction when viewed in the direction of rotation of the container lid when the female thread and the male thread are unscrewed and detached from the neck.
  • the second high-strength bridge is located behind the axial rupture means. The one end of the first high-strength bridge and the one end of the second high-strength bridge are spaced apart from the upper end of the axial breaking means by 1.0 to 3.0 O mm. Preferably, it is located.
  • the tamper-evident hem has a thin curl extending from the lower end thereof, and the slit constituting the axial breaking means extends partially or completely into the thin curl. I did not put it out.
  • FIG. 1 is a front view, partly in section, of a preferred embodiment of a container lid constructed according to the present invention.
  • FIG. 2 is a cross-sectional view taken along line A-A in FIG.
  • FIG. 3 is a partial front view showing a modification of the axial breaking means.
  • FIG. 4 is a front view, partially in section, showing a state where the container lid shown in FIG. 1 is attached to the mouth and neck of the container.
  • FIG. 5 is a partial cross-sectional view showing a modification of the first high-strength bridge.
  • FIG. 6 is a partial cross-sectional view showing a modified example of the first high-strength bridge and the second high-strength bridge.
  • FIG. 7 is a partial cross-sectional view showing another modified example of the first high-strength bridge and the second high-strength bridge.
  • FIG. 8 is a partial cross-sectional view showing still another modified example of the first high-strength bridge and the second high-strength bridge.
  • FIG. 9 shows another preferred embodiment of a container lid constructed according to the present invention
  • FIG. 10 is a partial cross-sectional view taken along line BB in FIG.
  • FIG. 1 illustrates a preferred embodiment of a synthetic resin container lid constructed according to the present invention.
  • the container lid generally designated by reference numeral 2, which can be made of a suitable synthetic resin such as polypropylene or hard polyethylene, has a circular top wall 4 and a substantially cylindrical scat wall hanging from the periphery of the top wall 4. 6 is provided.
  • the skirt wall 6 is formed with a circumferential breaking means 8 (the circumferential breaking means 8 will be described in more detail later), and the skirt wall 6 has a main portion 10 above the circumferential breaking means 8.
  • the outer peripheral surface of the main portion 10 of the skirt wall 6, which is divided into the tamper-evident hem portion 12 below the circumferential breaking means 8, has an outer diameter in the vicinity of the lower end thereof, and downward.
  • a gradually increasing conical portion 14 is formed.
  • the lower end of the main portion 10 of the skirt wall 4 that is, the portion below the truncated cone portion 14 and the outer peripheral surface of the tamper-evident hem portion 12 following this, also have a slightly downward outer diameter.
  • a concave-convex shape 16 for preventing slipping of a finger hung thereon is formed in a portion above the conical portion 14 on the outer peripheral surface of the main portion 10.
  • a female thread 18 is formed on the inner peripheral surface of the main part 10.
  • the female thread 18 is formed with a notch 20 extending in the axial direction at intervals in the circumferential direction.
  • the notch 20 constitutes a so-called air passage when the mouth and neck of the container is opened.
  • An annular ridge 22 is formed on the inner peripheral surface of the main portion 10 at the upper end thereof.
  • a sealing liner 124 formed separately from the main body of the container lid 2 is provided.
  • Such a sealing liner 24 can be conveniently formed by supplying a softened and molten synthetic resin material to the inner surface of the top wall 4 and compressing the synthetic resin material with a pressing tool.
  • the synthetic resin material for the sealing liner 124 is preferably a relatively soft synthetic resin such as soft polyethylene.
  • an annular shoulder surface 26 facing downward is formed at the upper part of the inner peripheral surface of the tamper-evident hem portion 12.
  • a plurality of flap pieces 28 are formed on the inner peripheral surface of the tamper-evident hem portion 12 at equal intervals in the circumferential direction below the force and the annular shoulder surface 26. .
  • the flap piece 28 constitutes a locking means to be locked to a locking jaw formed on the mouth and neck of the container.
  • Each of the flap pieces 28 has a base edge 30 connected to the inner peripheral surface of the tamper-evident hem 12 and the closure of the container lid when the container lid 2 is attached to the mouth and neck of the container.
  • each of the flap pieces 28 also extends downward in a direction opposite to the closing rotation direction of the container lid 2.
  • a thin curl 32 extending radially inward in an arc is attached.
  • the tamper-evident foot 12 has an axial breaking means 34 formed thereon. It is important that the axial breaking means 34 be composed of a slit that continuously extends from the upper end of the tamper-evident foot portion 12 to the substantially lower end.
  • the slits constituting the axial breaking means 34 extend continuously from the upper end of the tamper-evident hem 12 to the upper end of the thin curl 32, but the thin curl 3 2 or not at all (slits partially extend into the thin curl 32 depending on the cutting error in the forming operation of the axial breaking means 34 described later). It may be in the form of extending or not extending at all).
  • a slit constituting the axial breaking means 34 can be extended to the tip of the thin curl 32.
  • the slit constituting the axial direction breaking means 34 does not intersect with the base edge 30 of the flap piece 28 formed on the inner peripheral surface of the tamper dent bottom 12, and the flap piece 28 does not cross. Preferably, they are located in between.
  • the slits constituting the axial breaking means 34 may be somewhat inclined instead of extending substantially vertically (ie, substantially parallel to the central axis), for example, as shown in FIG.
  • the flap piece 28 may extend substantially parallel to the base edge 30 of the flap piece 28 as described above. As can be clearly understood by referring to FIG.
  • the above-mentioned circumferential breaking means 8 includes a plurality of bridging portions 36 a, 36 b, Includes 36c and 36d.
  • the circumferential breaking means 8 in the area other than the bridging parts 36a, 36b, 36c and 36d, the main part of the skirt wall 6
  • the section 10 and the tamper-evident foot section 12 are preferably separated from each other by cutting. Therefore, the tamper-evident foot portion 12 is connected to the main portion 10 via the bridging portions 36a, 36b, 36c and 36d.
  • a plurality of the bridging portions 36a are arranged at equal intervals in the circumferential direction (except for a region where the first high-strength bridging portion 36c mentioned later is arranged), and are substantially the same. It has a cross-sectional shape of.
  • a plurality of the bridging portions 36 b are also arranged at equal intervals in the circumferential direction (except for the region where the first high-strength bridging portion 36 c described later is arranged), and are substantially the same.
  • each of the bridges 36a is sufficiently small, and the cross-sectional area of each of the bridges 36b is slightly larger than the cross-sectional area of the bridge 36a, but sufficiently small.
  • the bridges 36a and 36b can be easily broken.
  • Bridge 36c is the first high-strength bridge with a large cross-sectional area.
  • Bridge 36d is also the second high-strength bridge with a relatively large cross-sectional area.
  • the first high-strength bridging part 36 c extends counterclockwise from one end located at a distance L 1 in the counterclockwise direction (one in the circumferential direction) from the upper end of the axial breaking means 34.
  • the second high-strength bridging portion 36 d extends clockwise from one end of the axial breaking means 34 with an interval L 2 in the clockwise direction (the other circumferential direction) from the upper end.
  • the cross-sectional area A 1 of the first high-strength bridge 36 c is about 1.5 to 4.5 O ram 2
  • the cross-sectional area A 2 of the second high-strength bridge 36 d is first smaller than the cross-sectional area of the high strength bridging portion 3 6 c (a 2 ⁇ a 1) 0. 8 0 to 2. 2 0 in the range of discussions about 2 are preferred.
  • the intervals L1 and L2 are in the range of 1.0 to 3.0.
  • the main body of the container lid 2 (that is, the portion excluding the sealing liner 124) is formed by compression molding or injection molding from an appropriate synthetic resin.
  • the circumferential breaking means 8 has not yet been formed, and the main part 10 of the skirt wall 6 and the tamper-evident hem 12 are crossed at the position of the circumferential breaking means 8. It is connected in all areas of the surface.
  • the thin curl 32 has not yet been curled, and extends substantially vertically downward as shown by the two-dot chain line in FIG.
  • the inner peripheral surface of the scuttle wall 6 also has an annular shoulder surface 38 that is slightly lower than the above-described annular shoulder surface 26 and faces downward.
  • Protrusions 40a and 40b extending from the annular shoulder surface 38 to a position slightly higher than the annular shoulder surface 26 are formed below the annular shoulder surface 38.
  • a plurality of ridges 40a are arranged at equal intervals in the circumferential direction, and have substantially the same shape.
  • the ridges 40b are also arranged at equal intervals in the circumferential direction, and have substantially the same shape.
  • the number of the ridges 40a and the number of the ridges 40b are the same, and each of the ridges 40b is positioned between the adjacent ridges 40a.
  • Protrusion 40a (the first high-strength bridge
  • the cross-sectional shape of the ridge 40a corresponds to the cross-sectional shape of the bridging portion 36a
  • the cross-sectional shape of the ridge 40b corresponds to the cross-sectional shape of the bridging portion 36b.
  • the cutting blade used for such cutting does not substantially act on the ridges 40a and 40b, and the radially outer portions of the ridges 40a and 40b are partially cut for the sake of cutting. However, the main parts of the ridges 40a and 40b are left without being cut, and thus the bridges 36a and 36b are formed.
  • one ridge 40a and one ridge 40b are the first high-strength bridges 36. Part of c is specified.
  • a cutting blade extending in the axial direction is caused to act on the tamper pin skirt portion 12, and is cut in the axial direction over the entire thickness direction up to the substantially lower end of the tamper ebident skirt portion 12, and the axial direction breaking means is provided.
  • the slits that constitute 3 4 are formed.
  • a thin curl 34 is formed by applying a heating curl tool to the thin portion extending substantially vertically without being curled to form the thin curl shown in FIG.
  • the sealing liner is formed by the above-described molding process using a pressing tool, and the force, and thus the container lid 2 is completed.
  • FIG. 4 shows a state where the container lid 2 is attached to the mouth and neck portion 42 of the container as required.
  • the mouth and neck portion 42 of the container which can be formed of a suitable synthetic resin such as glass or polyethylene terephthalate, has a cylindrical shape as a whole, and has an external thread 44 and an external thread on its outer peripheral surface.
  • An annular locking jaw 46 located below the ridge 44 is formed.
  • the container lid 2 constructed according to the present invention has a first high-strength bridging portion 36c (FIG. 2) on one side of the slit when viewed from the circumferential direction.
  • a second high-strength bridge 36d (Fig. 2) on the side, and the retaining action of the first high-strength bridge 36c and the second high-strength bridge 36d.
  • the sealing liner 124 disposed on the inner surface of the top surface wall 4 of the container lid 2 is brought into close contact with the top surface of the mouth-neck portion 42, thereby sealing the mouth-neck portion 42. .
  • the container lid 2 When opening the mouth and neck portion 42 of the container, the container lid 2 is rotated in the opening rotation direction, that is, counterclockwise as viewed from above in FIG. As a result, the female thread 18 formed on the main part 10 of the cut wall 6 in the container lid 2 is moved along the male thread 44 formed on the mouth and neck 42 of the container. Therefore, the container lid 2 is raised with the rotation. However, the tamper-evident hem portion 12 of the container lid 2 has the flap pieces 28 formed on the inner peripheral surface thereof locked to the locking jaws 46 of the mouth and neck portion 46. Upward movement is prevented. Therefore, considerable stress is generated at the bridging portions 36a, 36b, 36c and 36d (Fig.
  • the tamper-evident hem that continues to be connected to the main part 10 of the scar wall 6 by the first high-strength bridging part 36 c remaining without being fractured.
  • the part 12 is deformed into a form extending in an arc from the part where the first high-strength bridging part 36 c is present, and the flap pieces 28 are locked to the locking jaws 46 of the mouth and neck part 42. Is released. Thereafter, the entire container lid 2 including the tamper-evident hem 12 is raised with rotation, and the entire container lid 2 is detached from the mouth and neck portion 42.
  • the tamper-evident hem portion 12 separates from the main portion 10 of the skirt wall 6.
  • the tamper-evident hem 12 is removed from the mouth and neck 4 2 except for the tamper-evident hem 12 of the container lid 2, but the tamper-evident hem 12 is left in the mouth and neck 4 2.
  • the axial breaking means 34 formed on the tamper-evident foot 12 is formed by a slit extending continuously from the upper end of the evening-evident foot 12 to substantially the lower end, cutting is performed.
  • FIG. 5 illustrates a modification of the first high-strength bridge.
  • the first high-strength bridging portion 1336 is formed by increasing the cross-sectional area of the first high-strength bridging portion 1336c to increase its strength.
  • the tamper-evident foot 1 1 2 is not cut at all, and in Fig. 5, at the left end, the first high-strength bridge 1 36 c is the tamper-evident foot 1 1 2 exists over the entire thickness direction from the outer peripheral surface to the inner peripheral surface.
  • FIG. 6 illustrates a modified example of the first high-strength bridge and the second high-strength bridge.
  • the tamper-evident foot 2 12 is completely absent in both the first high-strength bridge 2 36 c and the second high-strength bridge 2 36 d.
  • both the first high-strength bridging section 2 36 c and the second high-strength bridging section 2 36 d, tamper-evident hem 1 1 2 throughout their circumferential direction Exist over the entire thickness direction from the outer peripheral surface to the inner peripheral surface.
  • the circumferential length of the first high-strength bridge 2 36 c and the second high-strength bridge 2 36 d is the first high-strength bridge 36 c shown in Fig. 2.
  • the second high-strength bridging portion is shorter than the circumferential length of 36 d.
  • one ridge 240b defines the first high-strength bridging portion 236c, which is located adjacent to and on the right side of the one ridge 240b.
  • the ridge 240a does not specify the first high-strength bridge portion 236a, but the normal bridge portion 236a.
  • FIG. 7 illustrates another modification of the first high-strength bridge and the second high-strength bridge.
  • the first high-strength bridging portion 336 c is not spaced from the upper end of the slit constituting the axial breaking means 334, 7 extends to the right in FIG. 7 from the upper end of the slit constituting the axial breaking means 3 3 4, and similarly, the second high-strength bridging section 3 36 d constitutes the axial breaking means 3 3 4 Axial breaking means without any distance from the upper end of the slit 3 3
  • the first high-strength bridging portion 336c and the second high-strength bridging portion 336d form They are adjacent to each other.
  • FIG. 8 illustrates yet another modification of the first high-strength bridge and the second high-strength bridge.
  • the first high-strength bridging portion 436c of the embodiment shown in FIG. 8 is provided with no gaps with respect to the upper end of the slit constituting the axial breaking means 434. 4 3 4 extending to the right from the slits, one ridge 4
  • the 40b defines the first high-strength bridging portion 436c, but the ridge located adjacent to and on the right side of the ridge 4440b is the first high-strength bridge
  • the second high-strength bridging part 436d shown in FIG. 8 is provided without any gap with respect to the upper end of the slit constituting the axial breaking means 434. 4 extends to the left from the slit that constitutes 4, and one ridge 44 a is the second high-strength bridge 4 3
  • FIG. 9 and 10 illustrate another preferred embodiment of a container lid constructed in accordance with the present invention.
  • a sealing liner 152 is formed on the inner surface of the top wall 504. This sealed liner 5
  • Reference numeral 24 denotes an inner annular seal ridge which enters the mouth and neck of the container and is brought into close contact with the inner peripheral surface, and an outer annular seal ridge which is brought into close contact with the upper surface or the outer peripheral surface of the mouth and neck of the container.
  • the locking means provided on the inner peripheral surface of the tamper-evident hem portion 5 12 is composed of an annular projecting piece 5 28 extending continuously in the circumferential direction.
  • the annular protruding piece 528 extends upward from the base edge 5330 connected to the inner peripheral surface of the tamper-evident hem 512 inward in the radial direction.
  • the annular projecting piece 528 has a slit 528 extending from the tip to the vicinity of the base edge. They are formed at intervals in the direction of the arrow.
  • the annular projecting piece 528 should be placed radially inward as shown by the two-dot chain line in Fig. 9. Conveniently, it is formed into a form extending downward, and after being removed from the mold, deformed to the state shown by the solid line.
  • the locking means comprises an annular projecting piece 528 extending continuously in the circumferential direction
  • the axis at the tamper-evident foot 512 as can be understood by reference to FIG.
  • the annular projecting piece 528 be formed with a slit extending continuously from the base edge to the tip end thereof by being aligned with the slit constituting the direction breaking means 534.
  • a slit in the annular projecting piece 5 28 is used to cut the tamper-evident hem 5 12 by a cutting blade to form a slit constituting the axial breaking means 5 34. 8 can be conveniently formed by cutting.
  • the configuration of the container lid 502 shown in FIGS. 9 and 10 is substantially the same as that of the container lid 2 shown in FIGS.
  • a ratchet piece known to those skilled in the art can be used instead of a circumferentially extending annular projecting piece 528 (or a plurality of circumferentially spaced flap pieces 28).
  • Other suitable forms of locking means such as, may also be provided on the inner peripheral surface of the tamper-evident hem 512.
  • the axial breaking means provided on the tamper-edent hem portion is constituted by a slit extending continuously from the upper end to the substantially lower end of the tamper-evidence hem portion. If the bridging part in the circumferential breaking means is broken except for one high-strength bridging part when the container lid is removed from the mouth and neck of the tamper- The container is deployed and the entire container lid is released from the mouth and neck of the container.
  • the holding action of the first and second high-strength bridging portions sufficiently suppresses the tamper-evident hem from being expanded at the portion where the axial breaking means exists, and therefore, the circumferential breaking means.
  • the breakage of at least some of the plurality of bridge portions in the above is sufficiently and reliably prevented.

Landscapes

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

Abstract

Ce couvercle de récipient inviolable en résine synthétique possède un mécanisme de rupture à direction axiale, placé sur une partie constituant une jupe inviolable, ainsi qu'une encoche, s'étendant, sans interruption, de l'extrémité supérieure de la jupe inviolable à son extrémité inférieure. Une première partie constituant un pont très résistant se trouve sur l'un des cotés de l'extrémité supérieure du mécanisme de rupture à direction axiale et ce, circonférentiellement, tandis qu'une seconde partie constituant un pont très résistant se trouve sur l'autre coté dans le même sens circonférentiel de telle sorte que, lorsque le couvercle vient s'adapter sur la partie constituant l'embouchure/col du récipient, la jupe inviolable ne se détend pas là où se trouve le mécanisme de rupture à direction axiale.
PCT/JP1997/004649 1996-12-17 1997-12-17 Couvercle de recipient inviolable en resine synthetique WO1998026991A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
DE69726735T DE69726735T2 (de) 1996-12-17 1997-12-17 Kunstharz-behälterdeckel mit garantieeigenschaften
KR1019980706387A KR100621295B1 (ko) 1996-12-17 1997-12-17 탬퍼 에비던트 특성을 갖는 합성수지제 용기뚜껑
EP97949113A EP0913334B1 (fr) 1996-12-17 1997-12-17 Couvercle de recipient inviolable en resine synthetique
US09/123,408 US5957315A (en) 1996-12-17 1998-07-28 Plastic container closure with tamper evident properties

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP33618896A JP3847868B2 (ja) 1996-12-17 1996-12-17 タンパーエビデント特性を備えた合成樹脂製容器蓋
JP8/336188 1996-12-17

Publications (1)

Publication Number Publication Date
WO1998026991A1 true WO1998026991A1 (fr) 1998-06-25

Family

ID=18296564

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP1997/004649 WO1998026991A1 (fr) 1996-12-17 1997-12-17 Couvercle de recipient inviolable en resine synthetique

Country Status (6)

Country Link
EP (1) EP0913334B1 (fr)
JP (1) JP3847868B2 (fr)
KR (1) KR100621295B1 (fr)
CN (1) CN1106329C (fr)
DE (1) DE69726735T2 (fr)
WO (1) WO1998026991A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5957315A (en) * 1996-12-17 1999-09-28 Japan Crown Cork Co., Ltd. Plastic container closure with tamper evident properties
WO2000034133A2 (fr) * 1998-12-07 2000-06-15 Tjandra Limanjaya Capsule de fermeture
WO2000040472A1 (fr) * 1999-01-05 2000-07-13 Sacmi Cooperativa Meccanici Imola S.C.R.L. Bouchon a vis appliquant un bondon
EP1273524A2 (fr) 1999-09-15 2003-01-08 Tjandra Limanjaya Bouchon de fermeture
US6581792B1 (en) 1998-12-07 2003-06-24 Tjandra Limanjaya Closure cap

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5160315B2 (ja) * 2008-06-09 2013-03-13 日本クラウンコルク株式会社 タンパーエビデント特性を備えた合成樹脂製容器蓋
JP6276972B2 (ja) * 2013-11-12 2018-02-07 日本クロージャー株式会社 合成樹脂製容器蓋
US20220041339A1 (en) 2020-08-07 2022-02-10 Niagara Bottling, Llc Single anchor closure
IT202200006653A1 (it) * 2022-04-04 2023-10-04 Sacmi Tappi per un contenitore e metodo per produrre un tappo per un contenitore.
KR20240044320A (ko) 2022-09-28 2024-04-04 서동섭 용기 마개 어셈블리

Citations (8)

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JPS49100949U (fr) * 1973-12-14 1974-08-30
JPS5832103A (ja) 1981-08-20 1983-02-25 Matsushita Electric Ind Co Ltd 非接触測定装置
JPS6218421A (ja) 1985-07-17 1987-01-27 Hitachi Chem Co Ltd エポキシ樹脂組成物
JPS62159351U (fr) * 1986-03-25 1987-10-09
JPH04215965A (ja) * 1991-03-01 1992-08-06 Japan Crown Cork Co Ltd 容器蓋
JPH04311461A (ja) 1991-04-08 1992-11-04 Japan Crown Cork Co Ltd ピルファープルーフ特性を有する合成樹脂製キャップ
JPH0654544A (ja) 1992-07-24 1994-02-25 Honda Motor Co Ltd 電力変換装置
JPH0880957A (ja) 1994-09-13 1996-03-26 Japan Crown Cork Co Ltd タンパーエビデント特性を備えた合成樹脂製容器蓋

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FR2329536A1 (fr) * 1973-07-02 1977-05-27 Somepla Sa Nouvelle capsule a vis inviolable et imperdable
US4805792A (en) * 1984-04-17 1989-02-21 Continental White Cap, Inc. Litterless tamper indicating closure
EP0254673B1 (fr) * 1986-07-11 1990-04-18 Interplastic AG Couvercle de récipient muni d'une bague de garantie
US5080246A (en) * 1989-09-01 1992-01-14 Anchor Hocking Packaging Company Closure having a spring open tamper evidencing band
KR970001659U (ko) * 1995-06-14 1997-01-21 병뚜껑

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS49100949U (fr) * 1973-12-14 1974-08-30
JPS5832103A (ja) 1981-08-20 1983-02-25 Matsushita Electric Ind Co Ltd 非接触測定装置
JPS6218421A (ja) 1985-07-17 1987-01-27 Hitachi Chem Co Ltd エポキシ樹脂組成物
JPS62159351U (fr) * 1986-03-25 1987-10-09
JPH04215965A (ja) * 1991-03-01 1992-08-06 Japan Crown Cork Co Ltd 容器蓋
JPH04311461A (ja) 1991-04-08 1992-11-04 Japan Crown Cork Co Ltd ピルファープルーフ特性を有する合成樹脂製キャップ
JPH0654544A (ja) 1992-07-24 1994-02-25 Honda Motor Co Ltd 電力変換装置
JPH0880957A (ja) 1994-09-13 1996-03-26 Japan Crown Cork Co Ltd タンパーエビデント特性を備えた合成樹脂製容器蓋

Non-Patent Citations (1)

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Title
See also references of EP0913334A4 *

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5957315A (en) * 1996-12-17 1999-09-28 Japan Crown Cork Co., Ltd. Plastic container closure with tamper evident properties
WO2000034133A2 (fr) * 1998-12-07 2000-06-15 Tjandra Limanjaya Capsule de fermeture
WO2000034133A3 (fr) * 1998-12-07 2000-10-12 Tjandra Limanjaya Capsule de fermeture
US6581792B1 (en) 1998-12-07 2003-06-24 Tjandra Limanjaya Closure cap
WO2000040472A1 (fr) * 1999-01-05 2000-07-13 Sacmi Cooperativa Meccanici Imola S.C.R.L. Bouchon a vis appliquant un bondon
EP1273524A2 (fr) 1999-09-15 2003-01-08 Tjandra Limanjaya Bouchon de fermeture

Also Published As

Publication number Publication date
JP3847868B2 (ja) 2006-11-22
EP0913334A4 (fr) 2000-07-26
CN1106329C (zh) 2003-04-23
DE69726735D1 (de) 2004-01-22
EP0913334B1 (fr) 2003-12-10
JPH10175656A (ja) 1998-06-30
DE69726735T2 (de) 2004-10-21
KR19990082645A (ko) 1999-11-25
EP0913334A1 (fr) 1999-05-06
CN1213348A (zh) 1999-04-07
KR100621295B1 (ko) 2006-11-30

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