EP2447179B1 - Structure for removing end-ring of resin bottle cap, and container provided with the same - Google Patents

Structure for removing end-ring of resin bottle cap, and container provided with the same Download PDF

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Publication number
EP2447179B1
EP2447179B1 EP10791916.9A EP10791916A EP2447179B1 EP 2447179 B1 EP2447179 B1 EP 2447179B1 EP 10791916 A EP10791916 A EP 10791916A EP 2447179 B1 EP2447179 B1 EP 2447179B1
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EP
European Patent Office
Prior art keywords
ring
removal
bottle cap
guidance
barbed
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.)
Active
Application number
EP10791916.9A
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German (de)
English (en)
French (fr)
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EP2447179A1 (en
EP2447179A4 (en
Inventor
Yuki FURUNO
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.)
FURUNO, YUKI
Sano Toru
Original Assignee
Sano Toru
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Publication date
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Publication of EP2447179A1 publication Critical patent/EP2447179A1/en
Publication of EP2447179A4 publication Critical patent/EP2447179A4/en
Application granted granted Critical
Publication of EP2447179B1 publication Critical patent/EP2447179B1/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D41/00—Caps, e.g. crown caps or crown seals, i.e. members having parts arranged for engagement with the external periphery of a neck or wall defining a pouring opening or discharge aperture; Protective cap-like covers for closure members, e.g. decorative covers of metal foil or paper
    • B65D41/32—Caps or cap-like covers with lines of weakness, tearing-strips, tags, or like opening or removal devices, e.g. to facilitate formation of pouring openings
    • B65D41/34—Threaded or like caps or cap-like covers provided with tamper elements formed in, or attached to, the closure skirt
    • B65D41/3423—Threaded or like caps or cap-like covers provided with tamper elements formed in, or attached to, the closure skirt with flexible tabs, or elements rotated from a non-engaging to an engaging position, formed on the tamper element or in the closure skirt
    • B65D41/3428—Threaded or like caps or cap-like covers provided with tamper elements formed in, or attached to, the closure skirt with flexible tabs, or elements rotated from a non-engaging to an engaging position, formed on the tamper element or in the closure skirt the tamper element being integrally connected to the closure by means of bridges
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D1/00—Containers having bodies formed in one piece, e.g. by casting metallic material, by moulding plastics, by blowing vitreous material, by throwing ceramic material, by moulding pulped fibrous material, by deep-drawing operations performed on sheet material
    • B65D1/02—Bottles or similar containers with necks or like restricted apertures, designed for pouring contents
    • B65D1/0223—Bottles or similar containers with necks or like restricted apertures, designed for pouring contents characterised by shape
    • B65D1/023—Neck construction
    • 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
    • B65D1/00—Containers having bodies formed in one piece, e.g. by casting metallic material, by moulding plastics, by blowing vitreous material, by throwing ceramic material, by moulding pulped fibrous material, by deep-drawing operations performed on sheet material
    • B65D1/02—Bottles or similar containers with necks or like restricted apertures, designed for pouring contents
    • B65D1/0223—Bottles or similar containers with necks or like restricted apertures, designed for pouring contents characterised by shape
    • B65D1/023—Neck construction
    • B65D1/0253—Means facilitating removal of the closure, e.g. cams, levers
    • 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
    • B65D2203/00—Decoration means, markings, information elements, contents indicators
    • 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
    • B65D2565/00—Wrappers or flexible covers; Packaging materials of special type or form
    • B65D2565/38—Packaging materials of special type or form
    • B65D2565/381—Details of packaging materials of special type or form
    • B65D2565/385—Details of packaging materials of special type or form especially suited for or with means facilitating recycling

Definitions

  • the present invention relates to a resin bottle cap end-ring retaining and removal structure for easy removal from a bottle body of an end-ring that remains on the bottle body side when a bottle cap is opened, such as on a PET bottle, and to a container provided with the same.
  • PET bottles with a primary material of polyethylene terephthalate (PET) have become widely employed as drink containers. It is preferable that, as far as possible, when such PET bottles are collected for material recycling collection is made as a single material.
  • collection is being made of PET bottles that have been brought in a state in which at least the easily-removed different material components, the cap body and the wrapper film, have been removed.
  • caps are provided with end-rings joined by a weakened portion such that the end-ring remains on the bottle body side when the lid is opened, so as to enable a previously-opened state to be ascertained.
  • FIG. 1 An example of prior art related to the present invention is the "Bottle Type Resin Container With Cap, Which is Capable Of Easily Removing Cap Circumferential Band From Bottle Mouth" of Japanese Patent Application Laid-Open (JP-A) No. 2006-232392 .
  • the technical configuration seen therein is: a ring stopper upper flange (bottle opening circumferential direction projection 8) that restricts the end ring (cap circumferential band) from detaching and has a portion formed with a cut-out formed in a slope shape, and a protrusion 13 for guiding an end-ring barbed flap (protrusion tab 7) formed at the slope shaped cut-out.
  • WO2008/095863 A1 discloses an end-ring retaining and removing structure comprising a bottle cap end-ring acting as a temper evident band and having a barbed body with a plurality of inwardly protruding projections positioned thereon in spaced relationship and a closure portion of a bottle body having a plurality of spaced retaining projections formed as short threaded portions on the outer surface of the bottle body to engage with the inwardly protruding projections of the end-ring.
  • JP 7 101457 A discloses an end-ring retaining and removing structure having a plurality of first spiral protrusions on an inner face of a screw cap and second spiral protrusions on a temper evident end-ring of the screw cap, which run in opposite direction to the first spiral protrusions, and first and second spiral protrusions, respectively, on a closure portion of a bottle body, which run in opposite directions to each other so as to correspondingly engage the respective first and second spiral protrusions of the screw cap.
  • WO 2008/072981 A2 discloses a structure comprising a bottle cap end-ring stopper upper flange on a bottle body, formed as a substantially continuous circumferential ring which is closed but for one or more circumferential recesses which have an elongated shape and are inclined relative to the circumferential direction, and a barbed body on a bottle cap end-ring which has one or more protrusions protruding inwardly therefrom.
  • the protrusions and the recesses are configured, aligned and sized such as to provide an interference fit therebetween so that the protrusions will pass easily through the recesses in one direction when the bottle cap is initially fitted onto the bottle body but not in the other direction.
  • an object of the present invention is to propose a novel end-ring retaining and removal structure that, when removing an end-ring, enables easy and reliable removal simply by tilting the orientation of the end-ring, without requiring the end-ring itself to be deformed, and to a container provided with the same.
  • the object of the present invention is resin bottle cap end-ring retaining and removal structure according to claim 1.
  • a second aspect of the present invention is the resin bottle cap end-ring retaining and removal structure of the first aspect wherein a pair of cut out end faces for configuring the guidance flange cut-out section are configured with a guiding inclined face facing towards a removal operation direction side on at least the cut out end face on the removal operation direction side.
  • a third aspect of the present invention is the resin bottle cap end-ring retaining and removal structure of the second aspect wherein the removal operation direction is the opposite direction to a bottle cap loosening direction.
  • a fourth aspect of the present invention is the resin bottle cap end-ring retaining and removal structure of any one of the first to the third aspects wherein the effective guidance zone is set in a range of 50° to 100° in a circumferential direction range of a bottle lid closure portion.
  • a fifth aspect of the present invention is the resin bottle cap end-ring retaining and removal structure of any one of the first to the fourth aspects wherein a dimension of the non-barbed guidance section is set as the same dimension or a shorter dimension than a dimension of the guidance flange cut-out section.
  • a sixth aspect of the present invention is the resin bottle cap end-ring retaining and removal structure of the sixth aspect wherein the indicator includes a cut-out alignment recess portion formed in a portion of a ring stopper lower flange provided below the ring stopper upper flange and an alignment recess portion correspondingly formed in the end-ring.
  • a seventh aspect of the present invention is the resin bottle cap end-ring retaining and removal structure of any one of the first to the seventh aspects wherein at initial closure of the bottle cap when the bottle body is manufactured, a stop position of the end-ring integrated with the bottle cap at the initial closure is configured such that an end-ring side indicator is displaced further toward a bottle cap loosening side than a bottle cap side indicator.
  • An eight aspect of the present invention is a container with a resin bottle cap end-ring retaining and removal structure, including the resin bottle cap end-ring retaining and removal structure of any one of the first to the eighth aspects.
  • a ninth aspect of the present invention is the container with the resin bottle cap end-ring retaining and removal structure of the ninth aspect wherein the container further includes an operation instruction for removing the end-ring.
  • the non-barbed guidance section and the guidance flange cut-out section are not adjacent to each other when opening at a previous stage. And with respect to restriction between the end-ring and the ring stopper upper flange, these components have non-restriction ranges in mutually disparate locations, resulting in the end-ring not being able to adopt the removal guiding inclined orientation unless the removal initiation set position state is achieved. Consequently, the retained state of the end-ring is in practice the same as conventionally, and the presence of the end-ring removal structure is neither detrimental to the process for closing the lid during manufacture, nor to opening the lid by a consumer.
  • removal initiation operation can be performed without substantially deforming the end-ring, and the end-ring can be rotated smoothly so as to perform an easy and reliable end-ring removal operation.
  • a situation in which the end-ring is inadvertently removed during operation to open the cap body can be reliably prevented from occurring.
  • the effective guidance zone being a range of about 1/4 a complete turn of the bottle lid closing section
  • sufficient rotation range can be secured for separating the end-ring from the cap body during opening, and as a result opening can be achieved while avoiding a situation in which the end-ring is inadvertently removed.
  • sufficient effective guidance zone can be secured in practice by setting the respective dimensions for the guidance flange cut-out section and the non-barbed guidance section.
  • the removal initiation set position state in which the non-barbed guidance section and the guidance flange cut-out section are disposed adjacent to each other can be easily achieved by appropriate aligning marks of the indicator, and end-ring removal operation can be easily initiated.
  • the indicator is formed by a recess portion, making the indication of the indicator even clearer, and also enabling operation by touch alone. This means that operation can be reliably performed even, for example, by a person with a visual impairment, thereby providing a product complying with what is referred to as universal design.
  • the end-ring is not inadvertently removed during initial opening of the bottle cap.
  • a container equipped with one of the above end-ring removal structures is provided, enabling the functionality of the container to be raised, and enabling what is referred to as ecological disposal to be achieved.
  • the ninth aspect of the present invention due to the end-ring removal method being displayed on the side of the bottle, a consumer can be positively encouraged to remove the end-ring when collecting PET bottles and the like.
  • Figs. 1 are partial cross-section perspective views illustrating partial enlargements of a container to which the present invention is applied.
  • Embodiments for implementing the present invention include preferable exemplary embodiments described below, and also various embodiments obtained by improvements and modifications within the scope of the present invention.
  • the present invention may be applied to a container C, which can be broadly divided into a configuration of a bottle body 1 and a bottle cap 2.
  • An indicator 3 is also provided across the two components, acting as a sign for removing an end-ring 25, described later, that separates from the bottle cap 2.
  • the bottle body 1 is a resin container such as, for example, a container referred to as a transparent PET bottle having polyethylene terephthalate (PET) as a principle material.
  • PET polyethylene terephthalate
  • a separate wrapper 10 is attached thereto so as to warp around a body section 11. Note that normally a different type of resin material from that configuring the bottle body is applied to the wrapper 10 and the bottle cap 2, and when the bottle body 1 is collected it is desirable for these items to have been removed therefrom.
  • the body section 11 of the bottle body 1 is a shape such as an angular cylindrical shape, circular cylindrical shape, or hexagonal cylindrical shape having a suitable capacity of about 100 to 2000cc.
  • a lid closure section 12 is formed at the apex portion of the body section 11.
  • the lid closure section 12 referred to here is a broad closure section in a range substantially covered by the bottle cap 2 from shoulder portions of the body section 11 upwards.
  • a pouring opening 13 is open at the top end of the lid closure section 12, and a male thread section 14 is appropriately formed from the vicinity of the pouring opening 13 downwards.
  • the male thread section 14 is formed with an appropriate profile, such as a continuous spiral male thread profile, or with an interrupted portion as appropriate.
  • a ring stopper upper flange 15 is formed further down than the male thread section 14.
  • a ring stopper lower flange 16 is also formed below and facing the ring stopper upper flange 15, and normally these are formed with diameters such that the diameter of the ring stopper lower flange 16 is larger.
  • a container-side indicator 31 of the indicator 3 is provided by utilizing, for example, a location where the ring stopper lower flange 16 is formed. Due to the ring stopper upper flange 15 and the ring stopper lower flange 16, an indentation dip is effectively formed between the two flanges, and this portion is referred to a ring housing portion 17.
  • the dimension of the ring housing portion 17 in the height direction is set as a dimension allowing the end-ring 25 to move up and down by a certain amount with the end-ring 25, described later, in a retained state allowing some freedom, referred to as play.
  • a region above the ring stopper upper flange 15 and below the male thread section 14 is a target region from which to first remove the end-ring 25, described later, referred to as a ring removal section 18.
  • the ring stopper upper flange 15 which is a characteristic portion of the present invention, adopts the following configuration. As shown in the enlargements of the ring stopper upper flange 15 in Fig. 1 and Fig. 4 , a portion of the ring stopper upper flange 15 is formed with a guidance flange-cut-out portion 151. With respect to a pair of cut-out end faces 152, 153 configuring the guidance flange-cut-out portion 151, at least the cut-out end face 152 on the end-ring 25 removal operation direction side is configured with a guiding inclined face 152f that faces for example towards the removal operation direction side of the end-ring 25 (indicated by arrow D).
  • the removal operation direction D refers to the rotation direction for rotating and removal operation, after placing the end-ring 25 in a removal guiding inclined orientation, described later.
  • this direction is for example the clockwise direction (the arrow towards the left hand side in Fig. 5 ); however it may be set as the anticlockwise direction.
  • the other, facing, cut-out end face 153 is also formed with an inclined face substantially parallel to the cut-out end face 14 on the removal operation direction side.
  • Each of the cut-out end faces 152, 153 as shown in the exemplary embodiment of Fig. 1 to Fig. 5 , are not facing each other as in the faces themselves being parallel to each other, but rather are profiled to open out somewhat towards the outside.
  • the cut-out end face 152 is configured by a guiding edge 152e that is a ridge portion, and an apex edge portion 152t at the outermost end portion thereof.
  • the opening width of the guidance flange-cut-out portion 151 is a cut-out portion dimension W1
  • the vicinity of the bottom end of the cut-out end face 152 at the removal operation direction side configures a guiding start point P for removing the end-ring 25.
  • the container-side indicator 31 on the ring stopper lower flange 16 referred to above is provided at the location where the guidance flange-cut-out portion 151 is formed.
  • the bottle cap 2 for fitting onto the bottle body 1.
  • the bottle cap 2 is configured by a cap body 21 with a female thread section 22 formed on the inside thereof.
  • the bottle cap 2 is fastened and fixed by meshing the female thread section 22 with the male thread section 14.
  • the cap body 21 is formed integrated with the end-ring 25 through a weak portion 23.
  • the weak portion 23 is integrally formed to the two components so as to be present at plural connection locations intermittently at fixed intervals from each other.
  • the end-ring 25 is stopped by the ring stopper upper flange 15 and prevented from rising, however the cap body 21 rises, breaking the weak portion 23 due to the rising action such that the cap body 21 is opened in a state in which the end-ring 25 is left behind.
  • the structure for separating the end-ring 25 from the cap body 21 is obviously not limited thereto; configurations exist in which a state is achieved during opening that prevents rotation of the end-ring 25, and the two components are then separated from each other at the weak portion 23 due to the twisting opening operation of the cap body 21.
  • the end-ring 25 is equipped with a circular ring shaped ring body 25A with a barbed body 250 provided on the inside of the ring body 25A to prevent the ring body 25A from detaching, and in the example of the present exemplary embodiment the barbed body 250 is configured by plural tabs of barbed flaps 251.
  • the barbed flaps 251 are formed at seven locations out of eight equal segments around the circumferential direction at the inside of the ring body 25A, with the free ends 252 of the barbed flaps 251 facing upwards, and maintaining a state somewhat inclined towards the inside when in their natural state.
  • the base end sides of the barbed flaps 251 are integrally formed to the ring body 25A in a radiating shape.
  • the barbed flaps 251 each have a barbed flap width dimension WF, and are provided adjacent to each other while securing an inter-barbed flap gap 254 to the respective adjacent barbed flap 251.
  • a non-barbed guidance section 255 is formed at one section, as if one of the barbed flaps 251 has been removed.
  • the width of the non-barbed guidance section 255 is a non-barbed section dimension W2, and in the present exemplary embodiment the non-barbed section dimension W2 is a dimension arrived at by adding twice the inter-barbed flap gap dimension WG to the barbed flap width dimension WF.
  • the pitch dimension per barbed flap 251 is referred to as the barbed flap pitch dimension WP and is in effect the sum of the barbed flap width dimension WF and the inter-barbed flap gap dimension WG
  • the barbed flaps 251 are also expressed together with the demarcations f1, f2 to fn, in sequence following on from the non-barbed guidance section 255, and in particular the barbed flap 251 immediately following on from the non-barbed guidance section 255 is also sometimes expressed as guide initiation flap f1.
  • An end-ring side indicator 32 of the indicator 3 referred to above is provided at a location where the guide initiation flap f1 is formed.
  • types of divided configurations of the barbed body 250 included configurations in which there are many fixed projections present, rather than moveable types such as the barbed flaps 251 described above, or movable type configurations having what is referred to as a choke shape with a pivoting (moving) direction along the circumferential direction of the ring housing section 17.
  • movable type configurations having what is referred to as a choke shape with a pivoting (moving) direction along the circumferential direction of the ring housing section 17.
  • the barbed body 250 is not divided and there is a continuous rib profile around the inner peripheral face of the ring body 25A with an upper end edge that is in a free state.
  • the provision of the non-barbed guidance section 255 enables operation to achieve the object of the present invention.
  • a first exemplary embodiment of the present invention has the configuration described above, and is operated as described below, however explanation will first be given regarding the capabilities required of the bottle cap 2.
  • the bottle cap 2 has different capabilities required according to the circumstances at each of the stages from manufacturing to disposal, and needs to satisfy these different capabilities as a whole. These capabilities are: (1) capabilities during initial closure (during manufacture); (2) capabilities during transportation and exhibition; (3) capabilities during initial opening; (4) capabilities during drinking; (5) capabilities during re-closure; (6) capabilities during re-opening; (7) capabilities during disposal.
  • required structure and capabilities include the ability of the bottle cap 2 to be quickly and reliably installed to the bottle body 1 together with the end-ring 25, and in particular the ability for the end-ring 25 to smoothly enter into the ring housing portion 17.
  • the (2) capabilities during transportation and exhibition there is a requirement for the capability to reliably maintain closure and the capability to retain the end-ring 25.
  • the (3) capabilities during initial opening there is a requirement for the capability to separate the end-ring 25 from the cap body 21 and reliably leave the end-ring 25 remaining in the ring housing portion 17.
  • the (4) capabilities during drinking there is the requirement for the capability to leave the end-ring 25 remaining in the ring housing portion 17 so as not to change its orientation in such a manner that would make contact with the lips of the drinker.
  • the (5) capabilities during re-closure there is a requirement for the capability for the end-ring 25 to be disposed roughly in the vicinity of the bottom end peripheral face of the cap body 21 so as to prevent such occurrences as contamination or damage at this location.
  • the (6) capabilities during re-opening there is a requirement for the capability to completely prevent the end-ring 25 from detaching with opening operation of the cap body 21.
  • the (7) capabilities during disposal there is a requirement for the capability to enable the end-ring 25, which was hitherto required to be reliably installed, to then be rendered extremely easily removed from the bottle body 1.
  • the present invention is provided with the removal structure of the end-ring 25 of the bottle cap 2 to furnish the (7) capabilities during disposal, while still satisfying each of the other capabilities described above.
  • configurations have been implemented that achieve all of the above capabilities except for the capability during disposal, and so the essential feature of the present invention is to exhibit the new capability during disposal while not impeding achievement of any of the previously realized capabilities.
  • the configuration completely prevents the end-ring 25 from detaching during normal circumstances, yet renders the end-ring 25 easily removable using the following operation when the need arises for the end-ring 25 to be removed on disposal.
  • Fig. 5 first for the initial state, the indicator 3 is employed for positional alignment of the container-side indicator 31 and the end-ring side indicator 32 (see Fig. 5 (a-1) to Fig. 5 (a-5)).
  • Fig. 5 (a-1) to Fig. 5 (a-5) are diagrams for explanation purposes illustrating a state in which the side face of the circular ring shaped lid closure section 12 is opened out and shown from face on.
  • a removal initiation set position state is adopted in which the guidance flange-cut-out portion 151 and the non-barbed guidance section 255 are adjacent to each other.
  • a state is achieved in which there is no restriction of moving upwards from the ring stopper upper flange 15. Namely, as shown in Fig. 5 (a-1), although the barbed flap 251 is still present, upward movement of the end-ring 25 is permitted in the range provided with the guidance flange-cut-out portion 151.
  • the end-ring 25 is also permitted to move upwards due to the presence of the non-barbed guidance section 255.
  • effective guidance zone Z This range is referred to as effective guidance zone Z, with the dimension thereof indicated as effective guidance zone dimension W3.
  • the effective guidance zone dimension W3 is the sum of the cut-out portion dimension W1 and the non-barbed section dimension W2, and a state in which the effective guidance zone dimension W3 is formed is only achieved when the container-side indicator 31 and the end-ring side indicator 32 are aligned with each other in the removal initiation set position state.
  • a removal guiding inclined orientation of the end-ring 25 is readily obtained when the effective guidance zone dimension W3 has been secured in this manner. Namely, when a portion at the indicator 3 is pushed up as shown in Fig. 5 (a-2) and Fig. 4 (b-2), such as with a finger, upward movement is permitted at this location due to the ring stopper upper flange 15 not being present there to restrict the end-ring 25. Furthermore, the non-barbed guidance section 255 is provided and there are no barbed flaps 251 present on the removal operation direction side at the end-ring 25 side adjacent to this location, and so upwards movement of the end-ring 25 is also permitted at this position even though the ring stopper upper flange 15 is present. As a result, as shown in Fig.
  • the end-ring 25 is still retained in the ring housing portion 17, and, by also utilizing the dimensional play present in the up-down direction of the ring housing portion 17, although there may be a minute amount of deformation, an orientation is readily achieved, namely a removal guiding inclined orientation, in which the end-ring 25 is basically merely inclined.
  • the end-ring 25 can be reliably removed simply by tilting the orientation thereof, with hardly any deformation.
  • This can be referred to as having removed the end-ring 25 from out of the ring housing portion 17 side, and a state is exhibited in which the inner periphery of the end-ring 25 is covered from below by the ring stopper upper flange 15, and appears, as diagrammatically illustrated in Fig. 5 (a-5), as if the end-ring 25 is in a state in which it has not been completely removed. Removal is subsequently made possible by, for example, rotating backwards in an anticlockwise direction so as to follow the loosening direction of the male thread section 14.
  • an operation explanation instruction 4 about this removal method like the one shown in Fig. 8 , either on the bottle body 1 or on the wrapper 10, a consumer is reliably imparted with knowledge regarding the removal process for the end-ring 25, promoting separate recycling collection.
  • the stop position of the end-ring 25 at initial closure namely the closure completion position of the bottle cap 2 needs to position the end-ring side indicator 32 that accompanies the cap body 21 so as to be displaced to the loosening side of the bottle cap 2 at an appropriate angle with respect to the container-side indicator 31.
  • Such a state and positional relationships are respectively referred so as the initial closure state and the initial closure position.
  • the initial displacement setting angle between the container-side indicator 31 and the end-ring side indicator 32 is referred to as initial displacement setting angle ⁇ S.
  • the initial displacement setting angle ⁇ S is set in a range of about 5° to 90°. Then, even supposing the end-ring 25 becomes separated partway through rotation of the bottle cap 2 from the initial closure position in the loosening direction (anticlockwise), the end-ring 25 that was rotated with the bottle cap 2 then still has an angle available until the end-ring 25 achieves the removal initiation set position state, referred to as the opening lid allowable angle ⁇ M. In such a case the opening lid allowable angle ⁇ M of about 270° to 355° is secured. With most specifications of bottle cap 2 separation of the end-ring 25 from the cap body 21 is completed within the range of the opening lid allowable angle ⁇ M.
  • Fig. 6 (a-1) and Fig. 6 (a-2) illustrates a state of a cut-out end face of a ring stopper upper flange 15 having a comparatively thin thickness dimension.
  • Fig. 6 illustrates another exemplary embodiment of a guidance flange-cut-out portion 151.
  • the guidance flange-cut-out portion 151 is an exemplary embodiment in which the cut-out end face 152 does not always have to be configured at an inclination.
  • configuration may be made by simple forming in a direction orthogonal to the direction the ring stopper upper flange 15 is formed along, namely in the vertical direction.
  • the guidance flange-cut-out portion 151 does not have to be provided with a cut-out end face 152 that is inclined.
  • the present invention is characterized by requiring the guidance flange-cut-out portion 151 to be present and by provision of the non-barbed guidance section 255 on the end-ring 25 side, such that the removal guiding inclined orientation can be achieved for removing the end-ring 25, making the end-ring 25 easily removable.
  • the exemplary embodiment illustrated in Fig. 7 is another exemplary embodiment of the indicator 3, being another exemplary embodiment of an indicator 3R formed as a recess.
  • a section of the ring stopper lower flange 16 is cut out to form a container-side indicator 31R, and a section of the end-ring 25 is also cut out to form an end-ring side indicator 32R, such that the operation initial state for removal, namely the removal initiation set position state, is achieved by aligning these two indicators.
  • the operation initiation state for removing the end-ring 25 is readily obtained by finger touch, enabling easy operation by visually impaired people and thereby obtaining a so-called universal design compatible product.
  • the end-ring side indicator 32R has a profile of recess that curves up to the upper side when viewed from face on, and is an upward extending profile (shield shape) in lateral cross-section.
  • a finger used to align the indicator 3R in the removal initiation set position state is then readily applied from that position to the end-ring 25 to move the end-ring 25 upwards, and a removal operation can commence immediately when the end-ring 25 is placed in the removal guiding inclined orientation.
  • the exemplary embodiment in Fig. 8 illustrates a notice for informing consumers of the removal structure of the end-ring 25 of the present invention, prompting more enthusiastic material separation and collection by complying with the notice.
  • the most widely used PET bottle has been given as an example for the bottle body 1, the present invention can be applied to another material, such as for example to a conventional glass container or the like.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Ceramic Engineering (AREA)
  • Closures For Containers (AREA)
  • Containers Having Bodies Formed In One Piece (AREA)
  • Details Of Rigid Or Semi-Rigid Containers (AREA)
EP10791916.9A 2009-06-25 2010-05-12 Structure for removing end-ring of resin bottle cap, and container provided with the same Active EP2447179B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2009151245A JP4560127B1 (ja) 2009-06-25 2009-06-25 樹脂製ボトルキャップのエンドリング除去構造並びにこれを具えた容器
PCT/JP2010/058012 WO2010150597A1 (ja) 2009-06-25 2010-05-12 樹脂製ボトルキャップのエンドリング除去構造並びにこれを具えた容器

Publications (3)

Publication Number Publication Date
EP2447179A1 EP2447179A1 (en) 2012-05-02
EP2447179A4 EP2447179A4 (en) 2012-11-21
EP2447179B1 true EP2447179B1 (en) 2015-07-29

Family

ID=43048759

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10791916.9A Active EP2447179B1 (en) 2009-06-25 2010-05-12 Structure for removing end-ring of resin bottle cap, and container provided with the same

Country Status (4)

Country Link
EP (1) EP2447179B1 (ko)
JP (1) JP4560127B1 (ko)
KR (1) KR20120101626A (ko)
WO (1) WO2010150597A1 (ko)

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Publication number Priority date Publication date Assignee Title
JP5638915B2 (ja) * 2010-10-29 2014-12-10 株式会社吉野工業所 剥離容器の製造方法
EP2780242A1 (en) * 2011-11-18 2014-09-24 Tetra Laval Holdings & Finance SA A neck, a cap, and a food package comprising such neck and cap
JP6003802B2 (ja) * 2013-05-21 2016-10-05 Ｊｆｅエンジニアリング株式会社 アンカーボルト取り付け工法
CN113453992A (zh) 2019-06-26 2021-09-28 微笑之音株式会社 端环同时分离型聚对苯二甲酸乙二醇酯容器盖子
KR102177073B1 (ko) 2019-06-26 2020-11-10 주식회사 리페트 엔드링 동시분리형 페트용기 뚜껑
KR102177076B1 (ko) 2019-11-28 2020-11-10 주식회사 리페트 엔드링 동시분리형 페트용기 뚜껑
WO2021071211A1 (ko) * 2019-10-07 2021-04-15 박수현 용기 개폐용 캡
KR102129490B1 (ko) * 2019-10-07 2020-07-02 박수현 용기 개폐용 캡
KR102363696B1 (ko) * 2020-05-20 2022-02-17 박수현 용기 개폐용 캡
KR102248418B1 (ko) 2020-08-07 2021-05-06 주식회사 미소지음 페트용기 뚜껑

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JPH07101457A (ja) * 1993-09-30 1995-04-18 Kishimoto Akira 開封されていないことを保証する広口容器用スクリューキャップ
JPH0912046A (ja) * 1995-06-29 1997-01-14 Shibasaki Seisakusho:Kk 閉止装置
JPH1135055A (ja) * 1997-07-16 1999-02-09 Shibazaki Seisakusho Ltd 閉止装置及び容器
JPH11292112A (ja) * 1998-04-07 1999-10-26 Ueno Hiroshi 易開封性打栓式樹脂キャップ
JPH11349014A (ja) * 1998-06-11 1999-12-21 Shibazaki Seisakusho Ltd 閉止装置
JP2001335055A (ja) * 2000-05-25 2001-12-04 Shirouma Science Co Ltd 打栓キャップ離脱方法、打栓キャップ離脱装置と打栓キャップ
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Also Published As

Publication number Publication date
JP2011006105A (ja) 2011-01-13
EP2447179A1 (en) 2012-05-02
JP4560127B1 (ja) 2010-10-13
KR20120101626A (ko) 2012-09-14
WO2010150597A1 (ja) 2010-12-29
EP2447179A4 (en) 2012-11-21

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