EP3392161B1 - Improvements in or relating to container closures - Google Patents

Improvements in or relating to container closures Download PDF

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Publication number
EP3392161B1
EP3392161B1 EP18168600.7A EP18168600A EP3392161B1 EP 3392161 B1 EP3392161 B1 EP 3392161B1 EP 18168600 A EP18168600 A EP 18168600A EP 3392161 B1 EP3392161 B1 EP 3392161B1
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EP
European Patent Office
Prior art keywords
closure
snap
side wall
rim
cavities
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
EP18168600.7A
Other languages
German (de)
French (fr)
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EP3392161A1 (en
Inventor
Patrick Schmidt
Andreas NACHTSHEIM
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.)
Obrist Closures Switzerland GmbH
Original Assignee
Obrist Closures Switzerland GmbH
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 Obrist Closures Switzerland GmbH filed Critical Obrist Closures Switzerland GmbH
Publication of EP3392161A1 publication Critical patent/EP3392161A1/en
Application granted granted Critical
Publication of EP3392161B1 publication Critical patent/EP3392161B1/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
    • B65D47/00—Closures with filling and discharging, or with discharging, devices
    • B65D47/04—Closures with discharging devices other than pumps
    • B65D47/06—Closures with discharging devices other than pumps with pouring spouts or tubes; with discharge nozzles or passages
    • 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
    • B65D41/46—Snap-on caps or cap-like covers
    • 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
    • B65D41/46—Snap-on caps or cap-like covers
    • B65D41/465—Snap-on caps or cap-like covers with integral internal sealing means
    • 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
    • B65D47/00—Closures with filling and discharging, or with discharging, devices
    • B65D47/04—Closures with discharging devices other than pumps
    • B65D47/06—Closures with discharging devices other than pumps with pouring spouts or tubes; with discharge nozzles or passages
    • B65D47/08—Closures with discharging devices other than pumps with pouring spouts or tubes; with discharge nozzles or passages having articulated or hinged closures
    • B65D47/0804—Closures with discharging devices other than pumps with pouring spouts or tubes; with discharge nozzles or passages having articulated or hinged closures integrally formed with the base element provided with the spout or discharge passage

Definitions

  • the present invention relates generally to a closure and particularly to a closure for a container.
  • the present invention also relates to a method of forming a closure and a method of demoulding a closure.
  • Closures for containers are commonly moulded of plastic and are of two types.
  • One type is a twist-on closure or screw closure that engages a threaded neck finish and is applied by threading it on the neck of the bottle.
  • the other type of closure is a snap-on closure which has a peripheral skirt which receives the neck of the bottle and one or more annular beads on its inside wall that snap into receiving grooves or under corresponding beads, lugs or the like on the exterior of neck finish of the bottle.
  • non-removable closures normally have snap-on features which engage into or under a corresponding feature on a container.
  • the features often result in an undercut.
  • Undercuts are protrusions or recessions in a part that prevent the mould, after the part is formed, from sliding away along the parting direction. These features inhibit the direct removal of the core, and as a result, generally necessitate using an additional mould piece, such as a side-core or an internal core lifter, to form the shape.
  • the present invention provides a non-removable container closure comprising a body including a side wall and a top wall with one or more snap-on features provided on the inside of said side wall, in which the body includes demoulding means allowing for rotation during demoulding, wherein the end of the sidewall opposite the top wall terminates in a rim, the rim including one or more unscrewing features for allowing the closure to be rotated during demoulding, the unscrewing features comprising a plurality of cavities formed within the rim.
  • the cavities may comprise a plurality of mutually spaced arcuate cavities.
  • the material of the rim between the cavities may form teeth or drive dogs.
  • the demoulding means may allow the closure body to be rotated during the demoulding process, which permits removal of the mould core.
  • the snap-on feature may comprise a snap bead, for example in some embodiments a plurality of arcuate snap bead portions/segments are provided and are mutually spaced on the interior of the side wall, projecting radially onwards therefrom.
  • a corresponding axial lug is provided.
  • the lugs may be axially spaced from the respective bead portions and may be circumferentially situated at one end thereof.
  • An end of the side wall (for example the "rim" of a free end, such as an end opposite a top wall/plate) includes one or more unscrewing features, such as cavities (which may receive teeth), for allowing the closure to be rotated during demoulding.
  • the snap bead may be located proximal to the free end of the side wall.
  • the snap bead may extend radially inwards and upwards from the interior of the side wall.
  • the body may include a dispensing orifice.
  • the orifice may, for example, be provided generally centrally in a top plate.
  • the body may include a self-closing valve.
  • the closure includes a top plate from which the side wall depends.
  • the present invention also provides a one-piece moulded closure for closing an opening of a bottle, the closure comprising a top wall and a side wall depending from the periphery thereof, in which the end of the sidewall opposite the top wall includes one or more unscrewing features for allowing the closure to be rotated during demoulding.
  • Closures formed in accordance with the present invention may form part of a dispensing pump.
  • the closure may be formed as part of a flip-top dispensing closure, with a base and a lid connected by a hinge.
  • the closure may be a snap-on closure, with the closure including a special snapping feature.
  • the snap-on feature may be provided on a closure base.
  • the closure may also comprise a lid.
  • the base and lid may be connected or connectable together, for example with a hinge.
  • the closure may be a tube closure.
  • the closure may be a dispensing closure, with a dispensing orifice (for example formed generally centrally in a base).
  • the closure may include one or more demoulding teeth and/or cavities.
  • the teeth/cavities may be formed at the open end of a base side skirt.
  • the closure may be substantially non-removable i.e. the intention is that once it is applied to a container (neck) it cannot easily be removed. In this case there is no requirement for a TE band, since is it not desired to remove the closure from the tube or bottle.
  • the present invention also provides a moulded closure for closing an opening of a container, the closure comprising a top wall and a side wall depending from the periphery thereof, in which the end of the sidewall opposite the top wall includes one or more unscrewing features for allowing the closure to be rotated during demoulding.
  • cavities localised around and within the rim of a skirt are provided, hence the transmissible torque applied to the closure and subsequently to the teeth between the cavities is different.
  • the present invention also provides a closure as described herein in combination with a container.
  • closure 10 which is attached to the neck 15 of a container 20.
  • the closure 10 comprises a body that includes a domed top plate 25 and a generally cylindrical sidewall 30.
  • the top plate 25 is generally disc-shape and has a central dispending orifice 26.
  • An annular skirt 27 is provided and depends from the top plate 25 around the region of the orifice. When the closure is applied to the container the skirt 27 extends into an opening 16 in the neck 15.
  • One end of the sidewall extends from the periphery of the top plate.
  • the other end (the free end) of the sidewall terminates with a rim 31.
  • a plurality of mutually spaced arcuate cavities 32 are formed in the rim i.e. around the circumference of the free end.
  • the material of the rim between the cavities forms teeth/drive dogs 33.
  • a plurality of arcuate retention bead segments 35 are provided on the interior surface of the sidewall.
  • the segments 35 are mutually spaced around the sidewall, at or towards the end proximal the rim 31.
  • the segments extend radially inwards and upwards (towards the top plate).
  • each lug has a corresponding bead segment.
  • the lugs extend axially, at one end to the top plate and at the other end terminating axially above their respective bead segment (spaced therefrom) and being in line with one side/end of the segment. This produces a generally L-shape configuration (with a small axial gap).
  • the neck 15 includes an annular snap bead 17 extending circumferentially therearound, and also a plurality of axial anti-rotation lugs 45, which in this embodiment extend from the bead to the rim of the neck.
  • closure lugs 40 will engage the neck lugs 45 to prevent rotation of the closure (limited rotation of the closure may be possible).
  • the closure is formed by a moulding process, such as injection moulding.
  • the mould (not shown) for the moulding process has a central core with four sliders.
  • the sliders move in parallel with a first demoulding stroke.
  • the location of the slider is shown by A in Figure 4 .
  • a second demoulding step the closure is rotated 90 degrees via the cavities/drive dogs in the area B.
  • unscrewing teeth can be inserted into the rim cavities.

Description

  • The present invention relates generally to a closure and particularly to a closure for a container. The present invention also relates to a method of forming a closure and a method of demoulding a closure.
  • Closures for containers, such as bottles, are commonly moulded of plastic and are of two types. One type is a twist-on closure or screw closure that engages a threaded neck finish and is applied by threading it on the neck of the bottle. The other type of closure is a snap-on closure which has a peripheral skirt which receives the neck of the bottle and one or more annular beads on its inside wall that snap into receiving grooves or under corresponding beads, lugs or the like on the exterior of neck finish of the bottle.
  • As discussed above, non-removable closures normally have snap-on features which engage into or under a corresponding feature on a container. The features often result in an undercut.
  • Current examples of existing closures include US2013/277328 , US2013/270273 , US5465835 , US5096077 , US2010/I47732 , US5046630 , and US2010/096415 . In particular document U8 2013/277323 forms the basis for the preamble of claim 1.
  • Producing plastics parts with undercuts presents distinct challenges for moulders. Undercuts are protrusions or recessions in a part that prevent the mould, after the part is formed, from sliding away along the parting direction. These features inhibit the direct removal of the core, and as a result, generally necessitate using an additional mould piece, such as a side-core or an internal core lifter, to form the shape.
  • The present invention provides a non-removable container closure comprising a body including a side wall and a top wall with one or more snap-on features provided on the inside of said side wall, in which the body includes demoulding means allowing for rotation during demoulding, wherein the end of the sidewall opposite the top wall terminates in a rim, the rim including one or more unscrewing features for allowing the closure to be rotated during demoulding, the unscrewing features comprising a plurality of cavities formed within the rim.
  • The cavities may comprise a plurality of mutually spaced arcuate cavities.
  • The material of the rim between the cavities may form teeth or drive dogs.
  • The demoulding means may allow the closure body to be rotated during the demoulding process, which permits removal of the mould core.
  • The snap-on feature may comprise a snap bead, for example in some embodiments a plurality of arcuate snap bead portions/segments are provided and are mutually spaced on the interior of the side wall, projecting radially onwards therefrom.
  • In some embodiments for at least some or all of the snap bead portions a corresponding axial lug is provided.
  • The lugs may be axially spaced from the respective bead portions and may be circumferentially situated at one end thereof.
  • An end of the side wall (for example the "rim" of a free end, such as an end opposite a top wall/plate) includes one or more unscrewing features, such as cavities (which may receive teeth), for allowing the closure to be rotated during demoulding.
  • The snap bead may be located proximal to the free end of the side wall.
  • The snap bead may extend radially inwards and upwards from the interior of the side wall.
  • The body may include a dispensing orifice. The orifice may, for example, be provided generally centrally in a top plate. The body may include a self-closing valve.
  • The closure includes a top plate from which the side wall depends.
  • The present invention also provides a one-piece moulded closure for closing an opening of a bottle, the closure comprising a top wall and a side wall depending from the periphery thereof, in which the end of the sidewall opposite the top wall includes one or more unscrewing features for allowing the closure to be rotated during demoulding.
  • Closures formed in accordance with the present invention may form part of a dispensing pump. In some aspects and embodiments the closure may be formed as part of a flip-top dispensing closure, with a base and a lid connected by a hinge.
  • The closure may be a snap-on closure, with the closure including a special snapping feature.
  • The snap-on feature may be provided on a closure base. The closure may also comprise a lid. The base and lid may be connected or connectable together, for example with a hinge.
  • The closure may be a tube closure.
  • The closure may be a dispensing closure, with a dispensing orifice (for example formed generally centrally in a base).
  • The closure may include one or more demoulding teeth and/or cavities. The teeth/cavities may be formed at the open end of a base side skirt.
  • The closure may be substantially non-removable i.e. the intention is that once it is applied to a container (neck) it cannot easily be removed. In this case there is no requirement for a TE band, since is it not desired to remove the closure from the tube or bottle.
  • The present invention also provides a moulded closure for closing an opening of a container, the closure comprising a top wall and a side wall depending from the periphery thereof, in which the end of the sidewall opposite the top wall includes one or more unscrewing features for allowing the closure to be rotated during demoulding.
  • In some embodiments cavities localised around and within the rim of a skirt are provided, hence the transmissible torque applied to the closure and subsequently to the teeth between the cavities is different.
  • Examples of embodiments of the present invention include:
    • food (such as ketchup) bottles
    • non-removable closures in order to make sure only the "proper stuff" is served and the original bottle cannot be refilled
    • closures for ketchup, mayo, honey
    • wide mouth closures
    • tubes
    • cosmetic tube closures in order to have non-removable closures for cream etc. products
    • pharmaceutical applications, wherein the pump comprises such a snap on feature and is thereby non-removable connected to the bottle (increase safety of the product).
  • The present invention also provides a closure as described herein in combination with a container.
  • Different aspects and embodiments of the invention may be used separately or together.
  • The present invention is more particularly shown and described, by way of example, with reference to the accompanying drawings.
  • Example embodiments are described in sufficient detail to enable those of ordinary skill in the art to embody and implement the systems and processes herein described. It is important to understand that embodiments can be provided in many alternate forms and should not be construed as limited to the examples set forth herein.
  • The terminology used herein to describe embodiments is not intended to limit the scope. The articles "a," "an," and "the" are singular in that they have a single referent, however the use of the singular form in the present document should not preclude the presence of more than one referent. In other words, elements referred to in the singular can number one or more, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises," "comprising," "includes," and/or "including," when used herein, specify the presence of stated features, items, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, items, steps, operations, elements, components, and/or groups thereof.
  • Unless otherwise defined, all terms (including technical and scientific terms) used herein are to be interpreted as is customary in the art. It will be further understood that terms in common usage should also be interpreted as is customary in the relevant art and not in an idealized or overly formal sense unless expressly so defined herein.
  • The scope of the invention is indicated by the appended claims. All changes that come within the meaning and range of equivalency of the claims are to be embraced within their scope.
  • There is shown a closure generally indicated 10 which is attached to the neck 15 of a container 20.
  • The closure 10 comprises a body that includes a domed top plate 25 and a generally cylindrical sidewall 30.
  • The top plate 25 is generally disc-shape and has a central dispending orifice 26. An annular skirt 27 is provided and depends from the top plate 25 around the region of the orifice. When the closure is applied to the container the skirt 27 extends into an opening 16 in the neck 15.
  • One end of the sidewall extends from the periphery of the top plate. The other end (the free end) of the sidewall terminates with a rim 31. A plurality of mutually spaced arcuate cavities 32 are formed in the rim i.e. around the circumference of the free end. The material of the rim between the cavities forms teeth/drive dogs 33.
  • On the interior surface of the sidewall a plurality of arcuate retention bead segments 35 are provided. The segments 35 are mutually spaced around the sidewall, at or towards the end proximal the rim 31. The segments extend radially inwards and upwards (towards the top plate).
  • Also provided on the interior surface of the sidewall are a plurality of elongate anti-rotation lugs 40. In this embodiment each lug has a corresponding bead segment. The lugs extend axially, at one end to the top plate and at the other end terminating axially above their respective bead segment (spaced therefrom) and being in line with one side/end of the segment. This produces a generally L-shape configuration (with a small axial gap).
  • The neck 15 includes an annular snap bead 17 extending circumferentially therearound, and also a plurality of axial anti-rotation lugs 45, which in this embodiment extend from the bead to the rim of the neck.
  • When the closure is fitted onto the neck the bead segments 35 on the body snap/clip under the bead 17. This prevents the closure from being removed from the container.
  • In addition, the closure lugs 40 will engage the neck lugs 45 to prevent rotation of the closure (limited rotation of the closure may be possible).
  • In this embodiment the closure is formed by a moulding process, such as injection moulding.
  • The mould (not shown) for the moulding process has a central core with four sliders. The sliders move in parallel with a first demoulding stroke. The location of the slider is shown by A in Figure 4.
  • In a second demoulding step the closure is rotated 90 degrees via the cavities/drive dogs in the area B. For example unscrewing teeth can be inserted into the rim cavities.
  • Although illustrative embodiments of the invention have been disclosed in detail herein, with reference to the accompanying drawings, it is understood that the invention is not limited to the precise embodiments shown and that various changes and modifications can be effected therein by one skilled in the art without departing from the scope of the invention.

Claims (13)

  1. A non-removable container closure (10) comprising a body including a top wall (25) and a side wall (30) depending from the periphery thereof, the side wall having one or more snap-on (35) features provided on the inside thereof, in which the body includes demoulding means allowing for rotation during demoulding, wherein the end of the sidewall opposite the top wall terminates in a rim (31), characterised by the rim including one or more unscrewing features for allowing the closure to be rotated during demoulding, the unscrewing features comprising a plurality of cavities (32) formed within the rim.
  2. A closure as claimed in claim I, in which the cavities comprise a plurality of mutually spaced arcuate cavities.
  3. A closure as claimed in claim I or 2 in which the material of the rim between the cavities forms teeth or drive dogs
  4. A closure as claimed in any preceding claim, in which the snap-on feature comprises a snap bead.
  5. A closure as claimed in claim 4, in which a plurality of arcuate snap bead portions are provided and are mutually spaced on the interior of the side wall, projecting radially onwards therefrom.
  6. A closure as claimed in claim 5, in which for each snap bead portion a corresponding axial lug is provided.
  7. A closure as claimed in claim 6, in which the lugs are axially spaced from the respective bead portions and are circumferentially located at one end thereof.
  8. A closure as claimed in claims 4-7, in which the snap bead is located proximal to the free end of the side wall.
  9. A closure as claimed in claims 4-7, in which the snap bead extends radially inwards and upwards from the interior of the side wall.
  10. A closure as claimed in any preceding claim, in which the body includes a dispensing orifice.
  11. A closure as claimed in any preceding claim, in which the closure is formed as part of a dispensing pump.
  12. A closure as claimed in any of claims I to II, in which the closure is formed as part of a flip-top dispensing closure.
  13. A closure as claimed in any preceding claim in combination with a container.
EP18168600.7A 2017-04-20 2018-04-20 Improvements in or relating to container closures Active EP3392161B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GBGB1706255.5A GB201706255D0 (en) 2017-04-20 2017-04-20 Improvements in or relating to container closures

Publications (2)

Publication Number Publication Date
EP3392161A1 EP3392161A1 (en) 2018-10-24
EP3392161B1 true EP3392161B1 (en) 2022-07-20

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EP18168600.7A Active EP3392161B1 (en) 2017-04-20 2018-04-20 Improvements in or relating to container closures

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GB (1) GB201706255D0 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT202100005945A1 (en) * 2021-03-12 2022-09-12 Ipi Srl CLOSING DEVICE OF A CONTAINER
WO2022190054A1 (en) * 2021-03-12 2022-09-15 Ipi S.R.L. Device for closing a container
IT202100005948A1 (en) * 2021-03-12 2022-09-12 Ipi Srl CLOSING DEVICE OF A CONTAINER
IT202100005954A1 (en) * 2021-03-12 2022-09-12 Ipi Srl CLOSING DEVICE OF A CONTAINER

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2650253B1 (en) * 1989-07-28 1991-10-04 Cebal ASSEMBLY OF AN OPENING CAPSULE AND A PLASTIC MOUTH CONTAINER AND USE THEREOF
FR2665140B1 (en) * 1990-07-25 1992-11-13 Astra Plastique CAPPING DEVICE WITH IRREVERSIBLE ATTACHMENT TO THE NECK OF A CONTAINER.
DE4121540A1 (en) * 1991-06-28 1993-01-07 Finke Robert Gmbh BOTTLE CAP FOR TWO-COMPONENT PACKS
US8038040B2 (en) * 2008-10-20 2011-10-18 The Clorox Company Bottle with integral dip tube
US8579140B2 (en) * 2008-12-16 2013-11-12 Rexam Healthcare Packaging Inc. Child-resistant dispensing closures and closure components
WO2013017810A1 (en) * 2011-08-03 2013-02-07 Obrist Closures Switzerland Gmbh Container closure
GB201116447D0 (en) * 2011-09-22 2011-11-02 Obrist Closures Switzerland A child-resistant closure

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GB201706255D0 (en) 2017-06-07
EP3392161A1 (en) 2018-10-24

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