WO1995015285A1 - Capuchon a encliqueter devissable et comportant un event, et col de recipient correspondant - Google Patents

Capuchon a encliqueter devissable et comportant un event, et col de recipient correspondant Download PDF

Info

Publication number
WO1995015285A1
WO1995015285A1 PCT/US1993/011676 US9311676W WO9515285A1 WO 1995015285 A1 WO1995015285 A1 WO 1995015285A1 US 9311676 W US9311676 W US 9311676W WO 9515285 A1 WO9515285 A1 WO 9515285A1
Authority
WO
WIPO (PCT)
Prior art keywords
skirt portion
neck
shoulder
closure
combination
Prior art date
Application number
PCT/US1993/011676
Other languages
English (en)
Inventor
Daniel Luch
Steven H. Bietzer
Original Assignee
Portola Packaging, Inc.
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 Portola Packaging, Inc. filed Critical Portola Packaging, Inc.
Priority to PCT/US1993/011676 priority Critical patent/WO1995015285A1/fr
Priority to AU57354/94A priority patent/AU5735494A/en
Publication of WO1995015285A1 publication Critical patent/WO1995015285A1/fr

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
    • B65D51/00—Closures not otherwise provided for
    • B65D51/16—Closures not otherwise provided for with means for venting air or gas
    • B65D51/1605—Closures not otherwise provided for with means for venting air or gas whereby the interior of the container is maintained in permanent gaseous communication with the exterior
    • B65D51/1611—Closures not otherwise provided for with means for venting air or gas whereby the interior of the container is maintained in permanent gaseous communication with the exterior by means of an orifice, capillary or labyrinth passage
    • 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

Definitions

  • the present invention relates in general to a vented 5 tamper-evident container closure and a container neck structure. More particularly, the present invention relates to a closure which is applied with an axial downward force onto the neck. After the tamper-evident feature of the invention is removed, the cap may be screwed onto and off 10 the container as a reclosure cap.
  • the present invention provides full thread initial engagement between a snap-on, screw-off cap and container structures by reason of a unique thread design, a unique
  • Certain alcoholic beverages which are similar to beer and frequently brewed from sorghum, after bottling continue to generate carbon dioxide and other gases. Such gases build up pressure in the container after the closure is applied. Accordingly, the present invention provides a vent in the top of the cap for escape of gases. Nevertheless, tamper-evident features hereinafter described are maintained.
  • the present invention comprises an improved closure or cap and an improved neck finish.
  • the cap skirt and neck are provided with mating threads of such shape that the cap may be applied in a simple downward vertical movement without relative rotation, the cap skirt and neck flexing sufficiently to permit the threads to slip past each other.
  • the neck finish of the present invention includes a downward extending upper neck stretch portion having at least one helical thread formed on the neck exterior.
  • a locking wall portion is disposed below the upper neck stretch.
  • the locking wall comprises a lower neck stretch portion offset outwardly relative to the upper neck stretch portion and a shoulder stretch portion.
  • the shoulder stretch extends inwardly from the lower neck stretch, interconnecting the lower neck stretch and the upper neck stretch.
  • at least one external ratchet tooth is formed on the locking wall.
  • the ratchet teeth are located on the lower neck stretch in the preferred embodiment; however, the teeth may alternatively be positioned on the shoulder stretch.
  • the cap of the present invention comprises a top having a depending upper skirt having at least one helical thread formed on its inner surface.
  • the threads of the neck and the cap are cooperatively shaped to slip past one another and interengage when the cap is pushed onto the neck.
  • a lower skirt disposed below the upper skirt comprises a shoulder and an outer skirt portion offset outwardly from the upper skirt.
  • the shoulder extends inwardly from the outer skirt, interconnecting the upper edge of the outer skirt and the lower edge of the upper skirt.
  • At least one internal ratchet tooth is formed on the inner surface of the lower skirt, positioned and shaped to engage the ratchet teeth of the neck when the cap is applied to the container.
  • the internal ratchet tooth is formed on the outer skirt.
  • the ratchet teeth may be located on the shoulder.
  • the upper skirt and shoulder are connected together by a frangible section, such as a plurality of radially spaced bridges.
  • a line of weakness may be formed through the cap along the intersection between the shoulder and upper skirt portion.
  • the ruptured frangible section provides evidence of tampering.
  • the lower skirt and interlocking ratchet teeth are tamper evident features of the present invention.
  • a vent is formed in the top of the cap spaced inward from one edge thereof.
  • a pair of short grooves which intersect in an "X" pattern extend through the top. The grooves are narrower at the upper surface of the top than at the lower surface. They function as a valve for escape of gases within the container.
  • the cap of the present invention further comprises means for removing the cap from the container, such as a tear tab.
  • the lower skirt is formed with a line of weakness extending through the outer skirt and the shoulder.
  • the tear tab is located adjacent this line of weakness. To remove the lower skirt from the closure, the consumer pulls the tab, rupturing the line. of weakness and the frangible section. Tampering with the contents of the container may be detected by even the distracted consumer, since the lower skirt must be removed before opening the container.
  • the lower skirt may be curled toward the upper skirt without rupturing the frangible section, releasing the internal teeth to permit twisting of the cap relative to the container without prior removal of the lower skirt.
  • a frangible, substantially vertical fin is formed between the upper skirt and shoulder. The fin prevents upward deformation of the lower skirt and, when broken, provides further evidence of tampering.
  • the fin is located adjacent the line of weakness formed through the lower skirt. Upward deformation of the lower skirt will rupture the frangible section and the line of weakness extending through the lower skirt.
  • the line of weakness extending through the lower skirt is a continuous stretch of material.
  • Fig. 1 is a side elevational view of a cap and container neck, the cap being partially broken away in section;
  • Fig. 2 is a top plan view of a cap in accordance with this invention;
  • Fig. 3 is a bottom plan thereof
  • Fig. 4 is a side elevational view
  • Fig. 5 is a vertical section view taken substantially along the line 5--5 of Fig. 2;
  • Fig. 6 is an enlarged vertical sectional view taken substantially along the line 6--6 of Fig. 4;
  • Fig. 7 is an enlarged sectional view taken substantially along the line 7--7 of Fig. 2;
  • Fig. 8 is an enlarged sectional view taken substantially along the line 8--8 of Fig. 2;
  • Fig. 9 is an enlarged schematic sectional view through threads of this cap.
  • Closure 21 hereinafter described in detail, is used with a container neck 22.
  • the interior of the neck forms no part of the present invention. With a blow-molded bottle finish, the interior contour tends to follow that of the neck exterior. However, it will be understood that other types of bottles may be used, with the internal shape of the neck varying from that of the exterior.
  • Neck 22 has a central opening 23 and a downward-outward slanted lip flange 24 terminating in a vertical stretch 28. Threads 29 extend outward of stretch 28. In the illustrated embodiment, there are two threads 29a and 29b.
  • the finish has twelve threads per inch with a double lead, each thread being six pitch and extending slightly in excess of 360° of a full thread. It is to be understood that the threads may be extended greater than 360° for increased thread engagement. Additionally, the thread leads may be of a different linear thread density (threads per inch) .
  • the upper flank 36 of thread 29 slants downwardly/outwardly at approximately 45° while the lower flank slants downwardly/inwardly at approximately 10°, permitting the threads on the interior of the cap to slip past the threads on the neck finish.
  • the thread apex 38 is made with as large a radius as possible.
  • one thread may be replaced by a groove.
  • threads 29 may be interrupted, instead of continuous.
  • the locking wall portion 40 has a shoulder stretch portion 42 and a lower neck stretch portion 46 offset outwardly relative to the upper neck stretch portion.
  • the lower neck portion slants downwardly/outwardly at an angle of approximately 10° and terminates in generally horizontal shoulder 47.
  • a vertical stretch 48 depends from shoulder 47.
  • vertical stretch 48 may be formed with a number of bumper ring segments 49 (here shown as four in number) .
  • a number of ratchet teeth 51 project from lower stretch 46 on opposite sides of neck 22.
  • three teeth 51 are formed on either side of neck 22, with the total extent of the three teeth being approximately 90°.
  • the teeth 51 are shaped to interengage the internal ratchet teeth formed on the cap, preventing twisting of the cap relative to the neck.
  • teeth 51 are formed on lower stretch 46.
  • the teeth may be located on shoulder stretch 42, interengaging ratchet teeth formed on the shoulder of the cap, as is discussed below.
  • a cap for use with neck structure 22 has top 61 from the periphery of which depends downward extending upper skirt 64. As illustrated, the top comprises a generally flat top disk; however, other configurations may be substituted.
  • the lower edge of upper skirt 64 merges with slanted stretch 63.
  • An internal shoulder 65 is formed at the intersection of stretches 64 and 63.
  • Member 64 has radially spaced vertical ribs 66 to enable the user to grip the cap.
  • Threads 71a and 71b which are selected to mate with threads 29a, 29b of neck 22, are formed on the interior of the skirt.
  • the shape of threads 29a, 29b, 71a and 71b allow the threads to slip past one another and then interengage.
  • Threads 71a and 71b are double lead and extend around the circumference of the cap in excess of 180°, for example, approximately 200°.
  • cap 21 is deposited on neck 22. Since threads 71a, 71b are diametrically opposed, the cap tends to rest horizontally on neck 22, facilitating the application of the cap onto the neck with a downward, axial force.
  • the closure has ring-like skirt or lower skirt portion 63 below upper skirt portion 64.
  • a frangible section including a number of radially spaced bridges 76 interconnects the shoulder 73 and the upper skirt portion.
  • the lower edges of ribs 66 form the bridges.
  • a line of weakness may be formed through the intersection of shoulder 73 and upper skirt 64.
  • a number of internal ratchet teeth 81 spaced and dimensioned to match the teeth 51 of neck 22 are formed on outer skirt portion 63. Teeth 81 are positioned to engage teeth 51 when cap 21 is pushed onto neck 22. After cap application, the inner edges 82 of teeth 81 are positioned close to lower stretch 46. The interlocking engagement between the teeth on the cap with those on the neck prevent twisting of the cap relative to the container while the lower skirt is intact. Teeth 81 are located on the outer skirt in the present embodiment; however, the teeth may alternatively be positioned along the inner surface of shoulder 73. The teeth formed on the shoulder surface would be shaped and positioned to interengage teeth located on the shoulder stretch of neck 22. When the closure is applied to the neck, the ratchet teeth on the opposing surfaces of shoulder 73 and shoulder stretch 42 interlock, preventing removal of the cap so long as the line of weakness is not broken.
  • the interengagement between ratchet teeth 51 and 81 prevent twisting of the cap relative to the neck.
  • the lower skirt must first be separated from the upper skirt, as by rupturing of the frangible section, allowing the cap to be unscrewed from the container.
  • the ruptured bridges warn the consumer that the container has been opened and the contents tampered with.
  • a tear tab 86 is connected to the lower edge of outer skirt 63.
  • the tear tab provides means for removing the lower skirt, and may be used to orient cap 21 relative to the container.
  • Lower skirt 63 is formed with a line of weakness generally indicated by 87 extending through outer skirt 63 and shoulder 73.
  • the line of weakness facilitates removal of the lower skirt from the closure, and is another tamper-evident feature of the present invention.
  • the consumer pulls tab 86 to remove lower skirt 63, rupturing line 87 and frangible section 76.
  • the absence of the lower skirt more dramatically alerts the consumer to possible tampering of the contents. A distracted consumer may fail to notice the fractured bridges, therefore the removal of the lower skirt is a more obvious indication of tampering.
  • substantially vertical fins 100 are formed between upper skirt 64 and shoulder 73.
  • vertical fin 100 is located adjacent line of weakness 87, as is shown particularly in Figure 7.
  • line of weakness 87 When a dishonest patron attempts to curl the lower skirt 63 towards the upper skirt, the deformation of the material below the vertical fin 100, generally indicated at 102, is resisted by the fin. This resistance distorts lower skirt 63, causing line of weakness 87 and frangible bridges 76 to rupture, providing evidence of tampering. Attempts by a dishonest patron to tamper with the contents of a container by curling the lower skirt to remove cap 21 will be revealed by the fracturing of frangible section 76 and line 87. Thus, vertical fin 100 provides additional protection against tampering.
  • First and second grooves 91 and 92 are formed extending entirely through top 61 and intersect in an "X" shape adjacent one edge of top 61. As show in Fig. 8, groove 91 is narrower at the top than the bottom and groove 92 is similarly formed. The grooves 91 and 92 permit escape of gas which accumulates in the container.
  • orientation is generally achieved by causing tear tab 86 to be at the trailing edge, riding in a slot cutout of the cap feed chute. It has been observed that occasionally the lower skirt 63 of a trailing cap will ride up onto the shoulder 73 of the preceding cap directly above the tear tab 86 of the preceding cap. This causes a jam and stops the flow of caps. It is readily apparent that an additional benefit of fins 100 of the present invention is the prevention of the occurrence of jamming.
  • each container has a square cross-section or some other variation from a round shape which permits the container to be oriented relative to cap 21.
  • the structure of capping machines is well known in the bottling art. Because of the relative orientation of cap 21 and neck 22, teeth 51 and 81 are in vertical alignment.

Landscapes

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

Abstract

On utilise un capuchon indicateur d'effraction (21), en association avec un col (22) de récipient. Le col (22) a un premier filetage hélicoïdal sur une portion supérieure du col et des dents externes (51, 81) formant une crémaillère sur une portion de paroi de blocage en dessous de la portion de col supérieure. Le capuchon (21) a une jupe supérieure (64) ayant un second filetage hélicoïdal correspondant au premier filetage hélicoïdal. Une portion descendante de jupe inférieure (63) comporte une portion de jupe externe et un épaulement s'étendant vers l'intérieur depuis la portion de jupe externe. Une section cassable (87) relie l'épaulement et la portion de jupe supérieure. Des nervures verticales (100) partent de l'épaulement (73) pour empêcher la déformation vers le haut de la portion de jupe inférieure (63) sans casser la section cassable (87), la portion de jupe inférieure (63) a des dents internes formant une crémaillère et elle est formée avec une ligne faible (87) traversant la portion de jupe externe et l'épaulement. La jupe inférieure (63) a une languette de déchirement (86) qui, lorsqu'elle est tirée, déchire la jupe inférieure (63) suivant une ligne verticale.
PCT/US1993/011676 1993-12-02 1993-12-02 Capuchon a encliqueter devissable et comportant un event, et col de recipient correspondant WO1995015285A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PCT/US1993/011676 WO1995015285A1 (fr) 1993-12-02 1993-12-02 Capuchon a encliqueter devissable et comportant un event, et col de recipient correspondant
AU57354/94A AU5735494A (en) 1993-12-02 1993-12-02 Vented snap-on, screw-off cap and container neck

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/US1993/011676 WO1995015285A1 (fr) 1993-12-02 1993-12-02 Capuchon a encliqueter devissable et comportant un event, et col de recipient correspondant

Publications (1)

Publication Number Publication Date
WO1995015285A1 true WO1995015285A1 (fr) 1995-06-08

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1993/011676 WO1995015285A1 (fr) 1993-12-02 1993-12-02 Capuchon a encliqueter devissable et comportant un event, et col de recipient correspondant

Country Status (2)

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AU (1) AU5735494A (fr)
WO (1) WO1995015285A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19633472A1 (de) * 1996-08-20 1997-03-20 Dieter Meyer Luft- und Gasentweichungsvorrichtung

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4071156A (en) * 1976-08-13 1978-01-31 The West Company Child resistant container-closure assembly
US4105133A (en) * 1974-10-23 1978-08-08 Aluminum Company Of America Container wall with rupturable weakening line
US4573599A (en) * 1985-02-25 1986-03-04 Owens-Illinois, Inc. Child resistant package with tamper indicating band
US4712705A (en) * 1987-01-30 1987-12-15 Stoffel Seals Corporation Tamper indicating cap seal for container valves
US5050753A (en) * 1990-08-27 1991-09-24 H-C Industries, Inc. Preferentially strengthened tamper-indicating plastic closure
US5090581A (en) * 1987-07-14 1992-02-25 Waverley Pharmaceuticals, Ltd. Bottle caps

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4105133A (en) * 1974-10-23 1978-08-08 Aluminum Company Of America Container wall with rupturable weakening line
US4071156A (en) * 1976-08-13 1978-01-31 The West Company Child resistant container-closure assembly
US4573599A (en) * 1985-02-25 1986-03-04 Owens-Illinois, Inc. Child resistant package with tamper indicating band
US4712705A (en) * 1987-01-30 1987-12-15 Stoffel Seals Corporation Tamper indicating cap seal for container valves
US5090581A (en) * 1987-07-14 1992-02-25 Waverley Pharmaceuticals, Ltd. Bottle caps
US5050753A (en) * 1990-08-27 1991-09-24 H-C Industries, Inc. Preferentially strengthened tamper-indicating plastic closure

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19633472A1 (de) * 1996-08-20 1997-03-20 Dieter Meyer Luft- und Gasentweichungsvorrichtung
WO1998007634A1 (fr) 1996-08-20 1998-02-26 Dieter Meyer Dispositif pour l'equilibrage de la pression dans des recipients sous depression ou surpression

Also Published As

Publication number Publication date
AU5735494A (en) 1995-06-19

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