CN1213348A - Synthetic resin container lid having tamper evident characteristics - Google Patents

Synthetic resin container lid having tamper evident characteristics Download PDF

Info

Publication number
CN1213348A
CN1213348A CN97192902A CN97192902A CN1213348A CN 1213348 A CN1213348 A CN 1213348A CN 97192902 A CN97192902 A CN 97192902A CN 97192902 A CN97192902 A CN 97192902A CN 1213348 A CN1213348 A CN 1213348A
Authority
CN
China
Prior art keywords
high strength
bridging part
strength bridging
axis direction
neck portion
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN97192902A
Other languages
Chinese (zh)
Other versions
CN1106329C (en
Inventor
贝塚义弘
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
Application filed by Japan Crown Cork Co Ltd filed Critical Japan Crown Cork Co Ltd
Publication of CN1213348A publication Critical patent/CN1213348A/en
Application granted granted Critical
Publication of CN1106329C publication Critical patent/CN1106329C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Images

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

Abstract

A plastic container closure having tamper evident properties of a type in which axial breakage means disposed in a tamper evident bottom portion is constituted from a slit continuously extending from the upper end of the tamper evident bottom portion substantially to its lower end. A first high strength bridging portion is disposed on one circumferential side of an upper end of the axial breakage means, while a second high strength bridging portion is disposed on the other circumferential side of the upper end of the axial breakage means, whereby when the container closure is mounted on a mouth-and-neck portion of a container, the tamper evident bottom portion is prevented from being enlarged at a site where its axial breakage means exists.

Description

The synthetic resin container lid that possesses tamper evident characteristics
Technical field
The present invention relates to be applicable to that outer peripheral face at mouth neck portion forms outside thread and is positioned at the synthetic resin container lid that is used for accommodating container such as beverage that card below this outside thread ends convex jointing part, relate to the to have tamper evident characteristics more specifically synthetic resin container lid of (when using container cover, can be residual its use the characteristic of vestige) for improper purpose.
As everyone knows, form outside thread and be positioned at card below this outside thread and end the glass that is used for belly wash etc. of convex jointing part or the container cover of synthetic resin container as being applicable to, supply with extensively practical have for example special public clear 58-32103 communique, special public clear 62-18421 communique, spy and open flat 4-311461 communique, real flat 6-54544 communique and the special synthetic resin container lid of opening the disclosed form of flat 8-80957 communique opened with tamper evident characteristics at the outer peripheral face of mouth neck portion.This container cover has circular top wall and from the downward sidewall of this circular top wall.Form the circumferential fracture device that extends along circumferential at sidewall, sidewall is divided into the unlatching identification bottom of the principal part of circumferential fracture device top and the device below of circumferentially rupturing.Form the negative thread that matches with outside thread in the mouth neck portion formation of container at the inner peripheral surface of sidewall principal part.Inner peripheral surface formation bottom unlatching identification ends the clamping device that convex jointing part matches with the card that the mouth neck portion at container forms.Circumferentially the fracture device comprises a plurality ofly at the bridging parts that circumferentially set at interval, and these bridging parts will be opened and be connected with the principal part of sidewall bottom the identification, and in these a plurality of bridging parts one is the big high strength bridging part of cross-sectional area.Opening identification bottom formation axis direction fracture device.This axis direction fracture device is to be made of the indentation that forms by the thickness that reduces material, or is made of the slit that comprises discontinuous portion (by the groove that material is cut off fully or makes material all not link to each other and form at its thickness direction when being shaped at its thickness direction).
When container cover is installed in the mouth neck portion sealing of container, container cover is assemblied in mouth neck portion and it is rotated at closing direction, make the negative thread of container cover and the external thread spiro fastening of mouth neck portion like this.Container cover is carried out along with screwing togather of outside thread and negative thread and is descended, and the card that the clamping device of container cover is flexibly crossed mouth neck portion ends convex jointing part and is stuck in below it.For the mouth neck portion of openable container, then make container open the direction rotation.Like this, because the negative thread of container cover moves and removes both screwing togather along the outside thread of mouth neck portion, so container cover is along with rising to the rotation of opening direction.But, end convex jointing part because be stuck in the card of mouth neck portion at the clamping device of opening the formation of identification bottom, be prevented from rising so open the identification bottom, cause therefrom at circumferential fracture device to produce stress, the bridging part in the device that circumferentially ruptures all ruptures except a high strength bridging part.But also expection produces following situation, promptly, indentation fracture at the axis fracture device of opening the formation of identification bottom, the perhaps discontinuous part fracture of slit, open the identification bottom like this and expand into band shape, remove clamping device therefrom and end for the card that card ends convex jointing part, the integral body of container cover is along with rising to the rotation of opening direction and breaking away from from mouth neck portion then.
Yet according to present inventor's etc. experience, there is following problem in above-mentioned container cover in the past.Promptly, when the mouth neck portion of openable container, expection is the indentation fracture that makes at the axis direction fracture device of opening the formation of identification bottom, or discontinuous fracture of slit, to open the identification bottom and expand into band shape, but, be not to be the indentation of axis direction fracture device or discontinuous fracture of slit, a but high strength bridging part fracture in the device that circumferentially ruptures, thereby indentation or slit discontinuous do not have fracture and left behind, so separate fully from the principal part of sidewall the unlatching of annularity identification bottom, make the unlatching of annularity discern the mouth neck portion that the bottom remains in container, and the other parts of container cover break away from from mouth neck portion.In the occasion that this thing happens, distinguish the viewpoint or the re-using of collecting from the so-called material of waste for container, then must carry out following operation in addition, that is, the unlatching of annularity identification bottom is expanded into band shape and remove from the mouth neck portion of container with suitable parting tool.
In order to solve the problems referred to above of container cover in the past, be intended that slit that utilization extends continuously from upper end to the lower end of opening the identification bottom and constitute and be provided in the axis direction fracture device of opening the identification bottom.Like this, when the mouth neck portion of openable container, when the bridging part in the circumferential fracture device all ruptures except a high strength bridging part, open the identification bottom and will inevitably expand into band shape, container cover integral body is broken away from from the mouth neck portion of container.But, iff being to utilize the slit that extends to the lower end from the upper end of opening the identification bottom continuously to constitute to be provided in the axis direction fracture device of opening the identification bottom, then when container cover is installed in the mouth neck portion of container, when particularly the card of flexibly crossing mouth neck portion when the clamping device of container cover ends convex jointing part, opening the identification bottom can expand at the position that its axis direction fracture device exists, can cause the several at least fractures in a plurality of bridging parts of circumferential fracture device thus, this tendency that does not allow occurrence is arranged.
Therefore, main purpose of the present invention provides novel and improved synthetic resin container lid, this synthetic resin container lid can prevent the generation of following situation fully definitely: promptly, being provided in the axis direction fracture device of opening the identification bottom comes down to by extending to the slit of lower end continuously from the upper end of opening the identification bottom and constituting, therefore when the bridging part in the device that circumferentially ruptures all ruptures except a high strength bridging part, will inevitably be launched into banded form though open the identification bottom, but when container cover is installed in the mouth neck portion of container, open the identification bottom in the position expansion that its circumferential fracture device exists, can cause the several at least this situations that can rupture in a plurality of bridging parts in the circumferential fracture device therefrom.
In order to reach above-mentioned main purpose, make two in a plurality of bridging parts to become the big high strength bridging part of cross-sectional area among the present invention, two such high strength bridging parts are provided in the both sides of the upper end of the axis direction fracture device that constitutes by extending to the slit of lower end from the upper end of opening the identification bottom, a high strength bridging part is extended to a circumferential side from the upper end of axis direction fracture device or from the end near this axis direction fracture device, and another high strength bridging part is extended to circumferential the opposing party from the upper end of axis direction fracture device or from the end near this axis direction fracture device.
Promptly, according to the present invention, as the synthetic resin container lid that reaches above-mentioned main purpose is to be applicable to that the outer peripheral face at mouth neck portion forms outside thread and is positioned at the container that the card of locating below this outside thread ends convex jointing part, and is the synthetic resin container lid with tamper evident characteristics
This synthetic resin container lid has roof and from the downward sidewall of this roof, be formed on the circumferential fracture device of circumferential extension at this sidewall, this sidewall is divided into the unlatching identification bottom of the principal part of this device top of circumferentially rupturing and the device below of should circumferentially rupturing, inner peripheral surface at the principal part of this sidewall forms the negative thread that matches with the outside thread of this mouth neck portion, inner peripheral surface in this unlatching identification bottom forms and ends the clamping device that convex jointing part matches with the card of this mouth neck portion, circumferentially the fracture device is included in circumferential interval and sets and will open a plurality of bridging parts that the identification bottom is connected with the principal part of this sidewall, one in this bridging part is the first high strength bridging part with big cross-sectional area, set axis direction fracture device in this unlatching identification bottom, in this synthetic resin container lid that provides, it is characterized in that:
This axis direction fracture device comes down to by extending to the slit of lower end continuously from the upper end of opening the identification bottom and constituting, one the second high strength bridging part that these a plurality of bridging parts comprise the first high strength bridging part and have big cross-sectional area, this first high strength bridging part and this second high strength bridging part are the both sides that are provided in this axis direction fracture device circumferentially looking, this first high strength bridging part extends to a circumferential side from the upper end of this axis direction fracture device or from the end near this axis direction fracture device, this second high strength bridging part extends to circumferential the opposing party from the upper end of this axis direction fracture device or from the end near this axis direction fracture device
By making this negative thread and this external thread spiro fastening and this clamping device card only being ended convex jointing part and container cover is installed in mouth neck portion at this card, when removing this negative thread and should externally threadedly screw togather from this mouth neck portion disengaging, at least one fracture in this first high strength bridging part and this second high strength bridging part.
The cross-sectional area of this first high strength bridging part is bigger than the cross-sectional area of the second high strength bridging part, when removing this negative thread and should externally threadedly screw togather from this mouth neck portion disengaging, ideal situation is this second high strength bridging part fracture, and this first high strength bridging part does not rupture and left behind, make this unlatching identification bottom be launched into band shape, end for the card that this card ends convex jointing part thereby remove this clamping device, comprise that the container cover integral body of this unlatching identification bottom breaks away from from this mouth neck portion.Ideal situation is that the cross-sectional area of this first high strength bridging part is 1.50 to 4.50mm 2, the cross-sectional area of this second high strength bridging part is 0.80 to 2.20mm 2Ideal situation is: the container cover hand of rotation when removing this negative thread with this externally threaded screwing togather and from this mouth neck portion disengaging, this first high strength bridging part is positioned at the place ahead of this axis direction fracture device, and this second high strength bridging part is positioned at the rear of this axis direction fracture device.Ideal situation is: an end of an end of this first high strength bridging part and this second high strength bridging part is positioned at apart from the upper end of this axis direction fracture device at interval 1.00 to 3.00mm.In desirable form of implementation, set up the thin-walled groove that extends from its lower end in this unlatching identification bottom, the slit that constitutes this axis direction fracture device only part extends or does not extend to this thin-walled groove fully.
The simple declaration of figure
The front elevation of the local section of the desirable form of implementation of the container cover that Fig. 1 constitutes according to the present invention;
Fig. 2 is along the drawing in side sectional elevation of A-A line among Fig. 1;
The partial front figure of the variation of Fig. 3 axis direction fracture device;
Fig. 4 is installed in container cover shown in Figure 1 the front elevation of local section of state of the mouth neck portion of container;
The partial cross-sectional view of the variation of Fig. 5 first high strength bridging part;
The partial cross-sectional view of the variation of Fig. 6 first high strength bridging part and the second high strength bridging part;
The partial cross-sectional view of other variation of Fig. 7 first high strength bridging part and the second high strength bridging part;
The partial cross-sectional view of the other variation of Fig. 8 first high strength bridging part and the second high strength bridging part;
The front elevation of the local section of other desirable form of implementation of the container cover that Fig. 9 constitutes according to the present invention;
Figure 10 is along the partial cross-sectional view of B-B line among Fig. 9.
The following desirable form of implementation that the synthetic resin container lid that constitutes according to the present invention is described in more detail with reference to accompanying drawing.
Fig. 1 is the desirable form of implementation of the container cover of formation according to the present invention.The container cover of representing with label 2 that can form with the suitable synthetic resin as polypropylene or hard polyethylene has: circular top wall 4 and the downward sidewall that is roughly drum 6 from the edge of this roof 4.Form circumferentially fracture device 8 (circumferentially fracture device 8 is somebody's turn to do in explanation in further detail in the back) at sidewall 6, sidewall 6 is divided into the principal part 10 of circumferential fracture device 8 tops and the unlatching identification bottom 12 of device 8 belows of circumferentially rupturing.
At the outer peripheral face of the principal part 10 of sidewall 6, forming the cone form 14 that external diameter downwards increases gradually near its lower end.The bottom of the principal part 10 of sidewall 4 is that the outer peripheral face of the part of cone form 14 belows and the unlatching identification bottom 12 that links to each other therewith also forms the cone shape that external diameter downwards increases a little gradually.Part above the cone form 14 of principal part 10 outer peripheral faces forms the concaveconvex shape 16 that prevents that hand is sliding.Inner peripheral surface at principal part 10 forms negative thread 18.This negative thread 18 circumferentially is being formed on the grooving 20 that axis direction extends with interval.So-called vent passage when this grooving 20 constitutes the openable container mouth neck portion.At the inner peripheral surface of principal part 10, the end also forms the prominent bar 22 of ring-type thereon.And, set the gasket seal 24 that the main body with container cover 2 forms respectively in the space that inner face limited by the prominent bar 22 of such ring-type and roof 4.By supplying with the synthetic resin raw material of softening molten condition to the inner face of roof 4 and compressing this synthetic resin raw material and can form sealing pad 24 easily with press tool.The synthetic resin raw material that is used for gasket seal 24 preferably uses the synthetic resin as the softer of soft polyethylene class.
Take on face 26 in the ring-type that the inner peripheral surface top of opening identification bottom 12 forms downwards.And, below this ring-type shoulder face 26, be formed on circumferentially equally spaced a plurality of fins 28 at the inner peripheral surface of opening identification bottom 12.From later explanation as can be known, such fin 28 has constituted and has ended convex jointing part at the formed card of vessel port neck and block the clamping device that ends mutually.The opposite sense of closing hand of rotation of the container cover of each fin 28 during from the basicosta 30 that is connected with the inner peripheral surface of opening identification bottom 12 towards the mouth neck portion that container cover 2 is installed in container tilts, promptly in Fig. 1 from above institute be considered as relative clws opposite sense, and the side is outstanding in radius.The basicosta 30 of each fin 28 itself also relatively container cover 2 above-mentioned close hand of rotation and inclined in opposite directions and extending downwards.Set up the thin-walled groove 32 that extends to the inboard arcuation of radial direction in the lower end of opening identification bottom 12.
Go on to say with reference to Fig. 1 and Fig. 2, opening identification bottom 12 formation axis direction fracture devices 34.Importantly this axis direction fracture device 34 comes down to by extending to the slit of lower end continuously from the upper end of opening identification bottom 12 and constituting.In graphic form of implementation, the slit that constitutes axis direction fracture device 34 extends to the upper end of thin-walled groove 32 downwards continuously from the upper end of opening identification bottom 12, but do not extend to fully thin-walled groove 32 or only part extend to thin-walled groove 32 (because the cut-out error in the formation operating process of axis direction fracture device 34 described later, slit can be the state of part extension to thin-walled groove 32 in or the state that does not extend fully).If be ready, also can make the slit that constitutes axis direction fracture device 34 extend to the front end of thin-walled groove 32.Ideal situation is: the slit of formation axis direction fracture device 34 does not intersect with the basicosta 30 at the fin 28 of opening the inner peripheral surface formation of discerning bottom 12.But between fin 28.If be ready, the slit that constitutes axis direction fracture device 34 is tilted slightly, replace vertical extension (promptly parallel) with this, the slit that constitutes axis direction fracture device 34 is extended abreast with the basicosta 30 of fin 28 as shown in Figure 3 with central axis.
Can clearly understand by reference Fig. 2: above-mentioned circumferential fracture device 8 is included in a plurality of bridging part 36a, 36b, 36c and the 36d that circumferential interval sets.In the drawing in side sectional elevation that sets circumferential fracture device 8, the zone beyond bridging part 36a, 36b, 36c and 36d, the principal part 10 of sidewall 6 and unlatching identification bottom 12 preferably are separated from each other by cut-out.Thereby, open identification bottom 12 and be connected with principal part 10 by bridging part 36a, 36b, 36c and 36d.Bridging part 36a (except the zone of the first high strength bridging part 36c that mentions later configuration) is circumferentially uniformly-spaced disposing a plurality ofly, and has identical shape of cross section.Bridging part 36b (except the zone of the first high strength bridging part 36c that mentions later configuration) is also circumferentially uniformly-spaced disposing a plurality ofly, also has identical shape of cross section.Bridging part 36a and bridge joint 36b configuration similar number, and make each bridging part 36b be positioned at the centre of adjacent bridging part 36a.The cross-sectional area of each bridging part 36a is very little, though and the cross-sectional area of each bridging part 36b slightly larger also very littler than the cross-sectional area of bridging part 36a, bridging part 36a and bridge joint 36b are fractures very easily.Bridging part 36c is the first big high strength bridging part of cross-sectional area.Bridging part 36d also is the second high strength bridging part with big cross-sectional area.Among Fig. 2, the first high strength bridging part 36c from the upper end anticlockwise direction (a circumferential direction) that is positioned at the above-mentioned axis direction of distance fracture device 34 at interval the end of L1 extend in the counterclockwise direction, the second high strength bridging part 36d from the upper end clockwise direction (another circumferential direction) that is positioned at the above-mentioned axis direction fracture of distance device 34 at interval the end of L2 extend to clockwise direction.When container cover 2 being installed in the mouth neck portion of container and when the mouth neck portion of container breaks away from container cover 2, can produce situation described later definitely for making container cover 2, ideal situation is that the cross-sectional area A1 of the first high strength bridging part 36c is 1.50 to 4.50mm 2, little (A2＜A1) is 0.80 to 2.20mm to the cross-sectional area A2 of the second high strength bridging part 36d than the cross-sectional area of the first high strength bridging part 36c 2And above-mentioned interval L1 and L2 are preferably 1.00 to 3.00mm.
The following describes the manufacturing process that said vesse covers 2 one examples.At first, form the main body (promptly removing the part of gasket seal 24) of shape container cover 2 by compression molding or injection moulding with suitable synthetic resin.In the container cover main body that is shaped, form circumferentially fracture device 8 as yet, at the circumferential position of fracture device 8, the principal part 10 of sidewall 6 with open identification bottom 12 and be connected in that entire cross section is regional.And thin-walled groove 32 does not form groove as yet, but vertical extension downwards shown in Fig. 1 long and two-short dash line.
Carry out following cut-out operation then and form circumferential fracture device 8.Can clearly understand by reference Fig. 1: at the inner peripheral surface of sidewall 6, above-mentioned ring-type shoulder face 26 slightly above also form towards below ring-type shoulder face 38.And, forms downwards from this ring-type shoulder face 38 and to extend to ring-type and take on the face 26 prominent bar 40a and the 40b of top position slightly.Prominent bar 40a is circumferentially equidistantly setting a plurality ofly, and is identical shaped.Prominent bar 40b is also circumferentially uniformly-spaced disposing, and is identical shaped.Prominent bar 40a and prominent bar 40b dispose similar number, and each prominent bar 40b are positioned at the centre of adjacent prominent bar 40a.Prominent bar 40a (except the prominent bar 40a that is positioned at the above-mentioned first high strength bridging part 36c zone) limits above-mentioned bridging part 36a, and prominent bar 40b (except the prominent bar 40b that is positioned at the above-mentioned first high strength bridging part 36c zone) limits above-mentioned bridging part 36b.Therefore, the shape of cross section of prominent bar 40a is corresponding with the shape of cross section of bridging part 36a, and the shape of cross section of prominent bar 40b is corresponding with the shape of cross section of bridging part 36b.In forming the cut-out operation of circumferential fracture device 8, at first, only stay the first high strength bridging part 36c and the existing angular regions of the second high strength bridging part 36d, cut off sidewall 6 gradually from outer peripheral face to the inner peripheral surface of sidewall 6.In fact employed cutting off tool does not act on prominent bar 40a and the 40b when cutting off like this, though the radial direction Outboard Sections of dash forward bar 40a and 40b can be cut off when cutting off, but do not cut off the principal part of prominent bar 40a and 40b and it is stayed, so just generated bridging part 36a and 36b.Then, in the first high strength bridging part 36c and the existing angular regions of the second high strength bridging part 36d, make cutting off tool affact institute's depthkeeping degree of thickness direction of sidewall 6 (graphic form of implementation from the outer peripheral face of sidewall 6, be half degree of depth to thickness) and sidewall 6 parts are cut off, the first high strength bridging part 36c and the second high strength bridging part 36d generated like this.Can clearly understand with reference to Fig. 2, in graphic form of implementation, prominent bar 40a and 40b limit the part of the first high strength bridging part 36c.Then, the cutting off tool that axis direction is extended acts on opens identification bottom 12, will open identification bottom 12 and cut off at axis direction in thickness direction integral body to the lower end, constitutes the rupture slit of device 34 of axis direction thereby formed.
After above-mentioned cut-out operation, the heating crimping tool acted on as yet reel and the actual also thinner wall section of vertical extension, thereby form the thin-walled groove 34 of the coiling of form shown in Fig. 1 solid line.Then, form gasket seal, so just finished container cover 2 by the above-mentioned forming process of using press tool.
Figure 4 shows that the state that container cover 2 is installed on request the mouth neck portion 42 of container.Mouth neck portion 42 integral body of the container that can form with glass or as the suitable synthetic resin of poly terephthalic acid ethylene ester are drum, form outside thread 44 and the ring-type card that is positioned at below this outside thread 44 ends convex jointing part 46 at its outer peripheral face.After the container of packing into as the suitable object of belly wash, container cover 2 is installed in mouth neck portion 42.At this moment, container cover 2 is assemblied in mouth neck portion 42, make container cover 2 close hand of rotation, be among Fig. 4 from above the right-hand revolution that is considered as, like this, the negative thread 18 of container cover 2 and the outside thread 44 of mouth neck portion 42 are screwed togather, make container cover 2 along with rotation descends.The card of the fin 28 elastic deformation ground through port necks 42 that form in the unlatching of container cover 2 identification bottom 12 ends convex jointing part 46, then recovery of elasticity and be stuck in only convex jointing part 46 of card.When fin 28 ends convex jointing part 46 by card,, cause the slit expansion that constitutes the axis direction fracture device 34 of opening identification bottom 12 by this power in the power of opening the oriented radial direction extroversion of identification bottom 12 effects.But, in the container cover 2 that constitutes according to the present invention, look from circumferential institute, there is the first high strength bridging part 36c (Fig. 2) in a side at slit, there is the second high strength bridging part 36d (Fig. 2) in opposite side, can prevent the undesirable expansion of slit fully definitely owing to the maintenance effect of these the first high strength bridging part 36c and the second high strength bridging part 36d, therefore, when container cover 2 is installed, can prevent bridging part 36a and 36b (Fig. 2) fracture fully definitely.The top part of gasket seal 24 and mouth neck portion 42 that is provided in roof 4 inner faces of container cover 2 connects airtight, like this with mouth neck portion 42 sealings.
When the mouth neck portion 42 of openable container, make container cover 2 open hand of rotation, be among Fig. 4 from above the institute's anticlockwise direction that is considered as rotation.Like this because the negative thread 18 that makes principal part 10 at the sidewall 6 of container cover 2 form moves along the outside thread that the mouth neck portion 42 at container forms, institute so that container cover 2 rise in company with rotation.Yet, block because the fin 28 that 12 inner circumferential surface form bottom the unlatching identification of container cover is ended convex jointing part 46 by the card of mouth neck portion 46, so be prevented from being moved upward.Therefore, bridging part 36a, 36b, 36c and the 36d (Fig. 2) that are provided in the circumferential fracture device 8 of sidewall 6 produce cooresponding stress, owing to this stress makes the very little bridging part 36a of cross-sectional area and 36b fracture, then and also the second high strength bridging part 36d also rupture.And then, be attached to the thin-walled groove 32 of opening identification bottom 12 along in the extended line fracture of opening the slits (constituting axis direction fracture device 34) that identification bottom 12 forms.Because the wall thickness of thin-walled groove 32 is very thin, so can be very easy to and realize definitely this fracture of thin-walled groove 32.When carrying out above-mentioned fracture, by fracture and the first residual high strength bridging part 36c continues to open identification bottom 12 with principal part 10 bonded assemblys of sidewall 6 and is deformed into the form that extends into arcuation from the parts that the first high strength bridging part 36c exists, removed fin 28 and ended for the card that the card of mouth neck portion 42 ends convex jointing part 46.Then, comprise that the integral body of the container cover 2 of opening identification bottom 12 rises in company with rotation, like this, the integral body of container cover 2 is broken away from from mouth neck portion 42.In such open operation process, when container cover 2 rises a little and makes gasket seal 24 when the end face of mouth neck portion 42 separates, between the top part of through port neck 42 and the gasket seal 24 and by formed grooving 20 (Fig. 1) on the negative thread 18 of container cover 2, make in the mouth neck portion 42 and external communications.
When above-mentioned open operation, when the first high strength bridging part 36d also ruptures once in a while, open of principal part 10 disengagings of identification bottom 12, therefore from sidewall 6, part breaks away from from mouth neck portion 42 beyond the unlatching identification bottom 12 of container cover 2, remains in mouth neck portion 42 and open identification bottom 12.But, because being formed on the axial direction fracture device 34 of opening identification bottom 12 is actually by the slit that extends continuously from upper end to the lower end of opening identification bottom 12 and constitutes, so, do not need cutting off tool etc., will not rupture along the occasion of the extended line of slit fracture at thin-walled groove 32, unlatching identification bottom 12 that can easily will be residual is from mouth neck portion 42 disengagings herein.
Figure 5 shows that the variation of the first high strength bridging part.In variation shown in Figure 5, increased its intensity because having increased the cross-sectional area of the first high strength bridging part 136c, so, the first high strength bridging part 136c opens identification bottom 112 and is not completely severed among Fig. 5 in the left part, and the first high strength bridging part 136c links to each other from the outer peripheral face of opening identification bottom 112 to inner peripheral surface in that thickness direction is whole in the left part among Fig. 5.
Figure 6 shows that the variation of the first high strength bridging part and the first high strength bridging part.In form of implementation shown in Figure 6, both sides zone at the first high strength bridging part 236c and the second high strength bridging part 236d, open and discern bottom 212 incomplete cut-off, the first high strength bridging part 236c links to each other in thickness direction integral body from outer peripheral face to the inner peripheral surface of opening identification bottom 112 at its circumferential Zone Full with the second high strength bridging part 236d both sides.In addition, the circumferential lengths of the first high strength bridging part 236c and the second high strength bridging part 236d is shorter than the circumferential lengths of the first high strength bridging part 36c shown in Figure 2 and the second high strength bridging part 36d.And a prominent bar 240b limits the first high strength bridging part 236c, but prominent bar 240a adjacent with this prominent bar 240b and that be positioned at its right side does not limit the second high strength bridging part 236d, but limits common bridging part 236a.
Fig. 7 is another variation of the first high strength bridging part and the first high strength bridging part.In form of implementation shown in Figure 7, the upper end that the first high strength bridging part 336c constitutes the slit of axis direction fracture device 334 does not relatively have at interval, from the upper end of the slit that constitutes axis direction fracture device 334 at Fig. 7 to right-hand extension, equally, the upper end that the second high strength bridging part 336d constitutes the slit of axis direction fracture device 334 does not relatively have at interval, extend to left at Fig. 7 from the upper end of the slit that constitutes axis direction fracture device 334, therefore, the first high strength bridging part 336c and the second high strength bridging part 336d pass through slit and adjacency.
Fig. 8 is the another variation of the first high strength bridging part and the second high strength bridging part.The upper end that the first high strength bridging part 436c of form of implementation shown in Figure 8 constitutes the slit of axis direction fracture device 434 does not relatively have at interval, from the slit that constitutes axis direction fracture device 434 to right-hand extension, a prominent bar 440b limits the first high strength bridging part 436c, but prominent bar 440a adjacent with this prominent bar 440b and that be positioned at its right side does not limit the first high strength bridging part 436c, but limiting common bridging part 436a, this point is different to the first high strength bridging part 36c in the form of implementation shown in Figure 4 with Fig. 1.In addition, the upper end that the second high strength bridging part 436d shown in Figure 8 constitutes the slit of axis direction fracture device 434 does not relatively have at interval, extend to left from the slit that constitutes axis direction fracture device 434, a prominent bar 440a limits the second high strength bridging part 436d, and this point is different to the second high strength bridging part 36d in the form of implementation shown in Figure 4 with Fig. 1.
Fig. 9 and other the desirable form of implementation that Figure 10 shows that the container cover that constitutes according to the present invention.In Fig. 9 and container cover 502 shown in Figure 10, at the integrally formed gasket seal 524 of the inner face of roof 504.The prominent bar 527 of outside annular seal top or that outer peripheral face connects airtight of the mouth neck portion that sealing pad 524 comprises the prominent bar 525 of inboard annular seal that enters in the vessel port neck and connect airtight with inner peripheral surface, make container.Being provided in the clamping device of opening identification bottom 512 inner peripheral surfaces is by constituting at the ring-type protrusion tab 528 that circumferentially extends continuously.This ring-type protrusion tab 528 from open basicosta 530 that identification bottom 512 inner peripheral surfaces are connected in radial direction to and diagonally extending upward.Extend to above-mentioned basicosta nearby slit 529 in the formation of circumferential compartment of terrain from its front end at ring-type tab 528.With suitable forming synthetic resin container cover 502 time, for fear of inadequate mould unloading by force, preferably ring-type tab 528 is formed as among Fig. 9 with shown in the long and two-short dash line in the radial direction to and the form of extending downwards, after shaping dies breaks away from, it is deformed into the state shown in the solid line.At clamping device is in the form of implementation that is made of the ring-type tab 528 that circumferentially extends continuously, can understand by reference Figure 10: be complementary for making the slit that constitutes the axis direction fracture device 534 of opening identification bottom 512, preferably also form the slit that extends to front end from its basicosta continuously at ring-type tab 528.Ideal situation is: when forming the slit that constitutes axis direction fracture device 534 cut off unlatching identification bottom 512 by cutting off tool, meanwhile cut off ring-type tab 528, can form the slit of ring-type tab 528 therefrom.The illustrated container cover of formation beyond Fig. 9 and container cover shown in Figure 10 502 above-mentioned and Fig. 1 to Fig. 42 is practically identical.If be ready, also can set for the colleague at the inner peripheral surface of opening identification bottom 512 is the clamping device of other appropriate form such as well-known ratchet, is substituted in the ring-type tab 528 (or at a plurality of fins 28 that circumferentially set at interval) that circumferentially extends continuously with this.
In container cover of the present invention, be actually by constituting opening axis direction fracture device that the identification bottom sets from opening the slit that upper end, identification bottom extends to the lower end continuously, therefore, with container cover when the mouth neck portion of container breaks away from, circumferentially the bridging part in the fracture device all ruptures except a high strength bridging part, open the identification bottom and will inevitably expand into band shape, container cover integral body breaks away from from the mouth neck portion of container.Suppose that all bridging parts that comprise the high strength bridging part all rupture, therefore open the identification bottom and remain in mouth neck portion, and the other parts of container cover break away from from mouth neck portion, both made so, because form the slit that extends to the lower end from its upper end continuously in residual unlatching identification bottom, so do not need to cut off numerous and diverse operations such as opening the identification bottom, can remove residual unlatching identification bottom from mouth neck portion easily with parting tool.In addition, when container cover is installed in the mouth neck portion of container, owing to be provided in the maintenance effect of the first and second high strength bridging part of axis direction fracture device both sides, can fully suppress to open the position expansion that the identification bottom exists at its axis direction fracture device, thereby several at least fractures of a plurality of bridging parts in the device that can prevent from definitely circumferentially to rupture.

Claims (6)

1. a synthetic resin container lid is applicable to that the outer peripheral face at mouth neck portion forms outside thread and is positioned at the synthetic resin container lid that the card of locating below this outside thread ends the container of convex jointing part and has tamper evident characteristics,
This synthetic resin container lid has roof and from the downward sidewall of this roof, be formed on the circumferential fracture device of circumferential extension at this sidewall, this sidewall is divided into the unlatching identification bottom of the principal part of this device top of circumferentially rupturing and the device below of should circumferentially rupturing, inner peripheral surface at the principal part of this sidewall forms the negative thread that matches with the outside thread of this mouth neck portion, inner peripheral surface in this unlatching identification bottom forms and ends the clamping device that convex jointing part matches with the card of this mouth neck portion, circumferentially the fracture device is included in circumferential arranged spaced and will opens a plurality of bridging parts that the identification bottom is connected with the principal part of this sidewall, one in this bridging part is the first high strength bridging part with big cross-sectional area, set axis direction fracture device in this unlatching identification bottom, in this synthetic resin container lid, it is characterized in that:
This axis direction fracture device comes down to be made of the slit that extends to the lower end from the upper end of opening the identification bottom continuously, one the second high strength bridging part that these a plurality of bridging parts comprise the first high strength bridging part and have big cross-sectional area, this first high strength bridging part and this second high strength bridging part are the both sides that are provided in this axis direction fracture device from circumferentially seeing, this first high strength bridging part extends to a circumferential side from the upper end of this axis direction fracture device or from the end near this axis direction fracture device, this second high strength bridging part extends to circumferential the opposing party from the upper end of this axis direction fracture device or from the end near this axis direction fracture device
End convex jointing part and container cover is installed in mouth neck portion by making this negative thread and this external thread spiro fastening that this clamping device is stuck in this card, when making container cover when removing this negative thread and this externally threaded screwing togather from this mouth neck portion disengaging, at least one fracture of this first high strength bridging part and this second high strength bridging part.
2. synthetic resin container lid as claimed in claim 1, it is characterized in that: the cross-sectional area of this first high strength bridging part is bigger than the cross-sectional area of the second high strength bridging part, removing this negative thread with this externally threaded screwing togather and with container cover during from this mouth neck portion disengaging, this second high strength bridging part fracture, and this first high strength bridging part does not rupture and left behind, make this unlatching identification bottom be launched into band shape and remove this clamping device relatively this card card of ending convex jointing part end, comprise that the container cover integral body of this unlatchings bottom discerning is from this mouth neck portion disengaging.
3. synthetic resin container lid as claimed in claim 2 is characterized in that: the cross-sectional area of this first high strength bridging part is 1.50 to 4.50mm 2, the cross-sectional area of this second high strength bridging part is 0.80 to 2.20mm 2
4. as claim 2 or 3 described synthetic resin container lids, it is characterized in that: the hand of rotation of the container cover when removing this negative thread and should externally threadedly screw togather from this mouth neck portion disengaging, this first high strength bridging part is positioned at the place ahead of this axis direction fracture device, and this second high strength bridging part is positioned at the rear of this axis direction fracture device.
5. as each described synthetic resin container lid of claim 1 to 4, it is characterized in that: an end of an end of this first high strength bridging part and this second high strength bridging part is positioned at the interval apart from the upper end 1.00 to 3.00mm of this axis direction fracture device.
6. as each described synthetic resin container lid of claim 1 to 5, it is characterized in that: set up the thin-walled groove that extends from its lower end in this unlatching identification bottom, the slit that constitutes this axis direction fracture device only part extends or does not extend to this thin-walled groove fully.
CN97192902A 1996-12-17 1997-12-17 Synthetic resin container lid having tamper evident characteristics Expired - Fee Related CN1106329C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP336188/96 1996-12-17
JP336188/1996 1996-12-17
JP33618896A JP3847868B2 (en) 1996-12-17 1996-12-17 Synthetic resin container lid with tamper evident characteristics

Publications (2)

Publication Number Publication Date
CN1213348A true CN1213348A (en) 1999-04-07
CN1106329C CN1106329C (en) 2003-04-23

Family

ID=18296564

Family Applications (1)

Application Number Title Priority Date Filing Date
CN97192902A Expired - Fee Related CN1106329C (en) 1996-12-17 1997-12-17 Synthetic resin container lid having tamper evident characteristics

Country Status (6)

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

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11975891B2 (en) 2020-08-07 2024-05-07 Niagara Bottling, Llc Single anchor closure

Families Citing this family (9)

* 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 (en) * 1998-12-07 2000-06-15 Tjandra Limanjaya Closure cap
US6581792B1 (en) 1998-12-07 2003-06-24 Tjandra Limanjaya Closure cap
IT247417Y1 (en) * 1999-01-05 2002-08-22 Sacmi SCREW CAPSULE WITH SEALED.
EP1273524B1 (en) 1999-09-15 2004-12-01 Tjandra Limanjaya Closure cap
JP5160315B2 (en) * 2008-06-09 2013-03-13 日本クラウンコルク株式会社 Synthetic resin container lid with tamper evident characteristics
JP6276972B2 (en) * 2013-11-12 2018-02-07 日本クロージャー株式会社 Plastic container lid
IT202200006653A1 (en) * 2022-04-04 2023-10-04 Sacmi Caps for a container and method of producing a cap for a container.
KR20240044320A (en) 2022-09-28 2024-04-04 서동섭 Closure assembly of vessel

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2329536A1 (en) * 1973-07-02 1977-05-27 Somepla Sa NEW TIGHT AND TAPPED SCREW CAPSULE
JPS49100949U (en) * 1973-12-14 1974-08-30
JPS5832103A (en) 1981-08-20 1983-02-25 Matsushita Electric Ind Co Ltd Noncontacting measuring device
US4805792A (en) * 1984-04-17 1989-02-21 Continental White Cap, Inc. Litterless tamper indicating closure
JPS6218421A (en) 1985-07-17 1987-01-27 Hitachi Chem Co Ltd Epoxy resin composition
JPS62159351U (en) * 1986-03-25 1987-10-09
DE3762328D1 (en) * 1986-07-11 1990-05-23 Interplastic Ag SECURITY TAPE ON A CLASP.
US5080246A (en) * 1989-09-01 1992-01-14 Anchor Hocking Packaging Company Closure having a spring open tamper evidencing band
JPH0688602B2 (en) * 1991-03-01 1994-11-09 日本クラウンコルク株式会社 Container lid
JP3209538B2 (en) 1991-04-08 2001-09-17 日本クラウンコルク株式会社 Synthetic resin cap with pill fur proof characteristics
JPH0654544A (en) 1992-07-24 1994-02-25 Honda Motor Co Ltd Power converter
JP3727675B2 (en) 1994-09-13 2005-12-14 日本クラウンコルク株式会社 Synthetic resin container lid with tamper evident characteristics
KR970001659U (en) * 1995-06-14 1997-01-21 Bottle cap

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11975891B2 (en) 2020-08-07 2024-05-07 Niagara Bottling, Llc Single anchor closure

Also Published As

Publication number Publication date
DE69726735T2 (en) 2004-10-21
JP3847868B2 (en) 2006-11-22
KR19990082645A (en) 1999-11-25
CN1106329C (en) 2003-04-23
DE69726735D1 (en) 2004-01-22
EP0913334B1 (en) 2003-12-10
EP0913334A4 (en) 2000-07-26
KR100621295B1 (en) 2006-11-30
WO1998026991A1 (en) 1998-06-25
EP0913334A1 (en) 1999-05-06
JPH10175656A (en) 1998-06-30

Similar Documents

Publication Publication Date Title
CN103153804B (en) The closure member in the display Kaifeng of improving and packaging
CN1070143C (en) Tamper-evident closures with captive band
CN101148208B (en) Metallic package
CN1106329C (en) Synthetic resin container lid having tamper evident characteristics
EP1086023B1 (en) Plastic screw cap with tamper-evident ring
EP0125097A2 (en) A tamper proof closure cap, method, and a mould for making same
JP4932710B2 (en) Closing means
US6260721B1 (en) Plastic cap
CN1084171C (en) Plastic cap
US6793082B1 (en) Snap-on screw-off closure for use in combination with a container
GB2121392A (en) Tamper-evident closure
JPH07285565A (en) Evidence type cap which is opened by twisting
US20050167879A1 (en) Method of injection molding closure with continuous internal rigid rib, mold for use therein and product made thereby
US6116443A (en) Plastic screw cap with tamper-evident ring
EP0381118B1 (en) Tamper-indicating plastic closure
US7228979B2 (en) Snap-on screw-off closure with retaining member for tamper-indicating band
CN1138313A (en) Plastic snap closure with a warranty seal and method for its production
US4565295A (en) Plastic container closure having pilferproof characteristics
KR890002821B1 (en) Pilfer-proof plastic closure for containers
US6068151A (en) Tamper-indicating plastic closure having pilfer band
US5630520A (en) Tabs for container closures and container neck
CA2494897A1 (en) Reduced application energy closure
CN1200345A (en) Tamper indicating package
JP4546057B2 (en) Cap and combination structure of cap and bottle
WO2022170416A1 (en) Closure devices and mold components for molding closure devices

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
C14 Grant of patent or utility model
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20030423

Termination date: 20151217

EXPY Termination of patent right or utility model