EP3712080A1 - Behälterabschluss und kombination aus einem behälterabschluss und verschlusskappe - Google Patents

Behälterabschluss und kombination aus einem behälterabschluss und verschlusskappe Download PDF

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Publication number
EP3712080A1
EP3712080A1 EP20156999.3A EP20156999A EP3712080A1 EP 3712080 A1 EP3712080 A1 EP 3712080A1 EP 20156999 A EP20156999 A EP 20156999A EP 3712080 A1 EP3712080 A1 EP 3712080A1
Authority
EP
European Patent Office
Prior art keywords
thread
angle
finish
container finish
venting
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.)
Withdrawn
Application number
EP20156999.3A
Other languages
English (en)
French (fr)
Inventor
Lino Dryer
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
Priority to EP20156999.3A priority Critical patent/EP3712080A1/de
Publication of EP3712080A1 publication Critical patent/EP3712080A1/de
Withdrawn legal-status Critical Current

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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
    • 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
    • B65D51/00—Closures not otherwise provided for
    • B65D51/16—Closures not otherwise provided for with means for venting air or gas
    • B65D51/1672—Closures not otherwise provided for with means for venting air or gas whereby venting occurs by manual actuation of the closure or other element
    • B65D51/1688—Venting occurring during initial closing or opening of the container, by means of a passage for the escape of gas between the closure and the lip of the container mouth, e.g. interrupted threads

Definitions

  • This invention concerns a container finish, a container with a container finish and a combination of a container finish and a closure cap according to the preamble to the independent patent claims.
  • containers or closures are provided with means to vent the closure during unscrewing, allowing a venting time that lasts long enough to prevent an intentionally rapid unscrewing and the risk of a high-speed ejection of closures.
  • WO 97/28057 discloses a closure that possesses a twin-start thread. Two outwardly protruding threads are displaced by 180 DEG. Each thread preferably extends over an angle of 240 DEG to less than 360 DEG.
  • the distribution of the force exerted from the container finish onto a closure is, with such an arrangement, point-symmetrical and diagonally opposed so that the risk of tilting or one-sided ejection is reduced.
  • US 7,866,496 discloses a finish for a hot fill container with a weight from about 3.5 to 8 g.
  • US 4,242,398 concerns a pressure resistant thermoplastic container, wherein in order to reduce the centre of gravity the material or wall thickness in the neck and shoulder region is redistributed to the lower portion of the container. Whereas a typical upper neck or finish weighs about six grams, a lightweight finish weighs as low as two grams. Short finishes are also known for non carbonated beverages.
  • the object of the invention is to avoid drawbacks of the state of the art, and in particular to create a short lightweight container finish and a combination of container finish and a short closure cap which nevertheless possesses venting properties for reduction of the internal pressure during the opening sequence of containers containing beverages with a carbon dioxide content.
  • a container finish according to the present inventions possesses an essentially cylindrical outside surface with one single thread. All parts of the single thread are arranged on one virtual continuous screw line which has no kink and no step.
  • the thread is arranged on the outside surface so as to extend over an angle less than 550 DEG and more than 360 DEG.
  • Such an arrangement prevents tilting or one-sided opening of the closure, and its ejection from the finish, since the force exerted from the container finish onto a closure is evenly distributed around the whole circumference of the finish. Thus the risk of premature and one-sided ejection is reduced.
  • the opening angle is still small ' enough for providing a quick and comfortable opening.
  • the container finish according to the present invention further comprises at least one venting recess, said venting recess interrupting the thread.
  • the venting recess permits reduction of the internal pressure within the container at a time when a closure is still firmly engaged with the container finish.
  • the thread has a pitch of less than 3mm, in particular 2 to 3 mm, in particular 2.5 mm.
  • the relatively small pitch results in a high percentage of the holding force acting in axial direction and therefore supports the prevention of ejection.
  • the low pitch further allows the design of a short and thus lightweight container finish.
  • At least two venting recesses are aligned to each other, preferably in axial direction.
  • venting recesses preferably in a vertical arrangement
  • a certain lateral displacement of the superimposed "slots" is possible as long as the free passage for exiting gas is not essentially restricted.
  • the venting recess has a certain circumferential aperture.
  • the at least one venting recess interrupts the base line of the thread over a circumferential aperture angle around the finish axis. In a sectional top view said aperture angle is between 4 DEG and 10 DEG at the bottom of the venting recess.
  • the at least one venting recess is defined by two lateral surfaces, wherein at least one lateral surface in a radial cross section includes an angle with respect to a radial line.
  • a radial line is a line running from the axis of the finish to a centre of the bottom of venting recess in a plane perpendicular to the axis. Said angle is being between half of the aperture angle and 90 DEG in a plane perpendicular to the axis, preferably said angle being 30 DEG or 60 DEG.
  • the individual venting recesses are thus formed to taper outwardly and to open from the base line of the thread towards an outer line of the thread.
  • venting recesses or venting slots is arranged at regular spacings in the circumferential direction, in particular six venting recesses are arranged with a 60 DEG spacing between the radial lines.
  • the object of the present invention are also solved with a closure finish, preferably as described above, wherein the container finish comprises at least one thread and at least one venting recess.
  • At least one venting recess has a first lateral surface. Said first lateral surface in a radial cross section includes a first angle with respect to the radial line.
  • the at least one venting recess further has a second lateral surface, said second lateral surface in a radial cross section includes a second angle with respect to the radial line.
  • the first angle and the second angle are different.
  • venting recess tapers outwardly and opens asymmetrically.
  • the first angle is equal or smaller than 30 DEG and preferably the second angle is longer than 30 DEG, more preferably is about 60 DEG.
  • asymmetric venting recesses are arranged near opening lines of the mould splits.
  • the lateral surfaces of the venting recesses are arranged in a way that there is no undercut in the moving direction of the mould splits.
  • the container finish is formed in a mould with two parts forming the outer surface of the finish.
  • the lateral surfaces of a venting recess shall be parallel to or taper outwardly from the moving direction, thus in a direction perpendicular to the parting line. This is achieved by asymmetrically arranged lateral surfaces for venting recesses close to the parting line.
  • the thread comprises a truncated thread end, preferably a basi-cally horizontal surface on the lower side of the thread end.
  • the lower side of the thread end is truncated.
  • the lower side of the thread end is flattened, thus the thread end has a smaller axial extension than the rest of the thread.
  • the truncation typically extends over the first tread segment.
  • the axial distance between the lower side of the thread end and the upper side of the retaining bead is smaller than the distance between the upper side of the thread and the lower side of the thread part which is axially above.
  • the finish has a weight of 2.0 g - 2.1 g, in particular 2.05g.
  • the container finish comprises a cylindrical wall with a thickness of about 2-2.5mm and is preferably made from PET.
  • the container finish beneath the threads possesses a circumferential retaining bead for an anti-tamper strip of a closure cap. Said bead protrudes radially outwards, in particular more than the thread, in particular more than 1.25 times the radial extension of the thread.
  • the anti-tamper strip may easily pass the thread and only bulge when passing the raining bead.
  • the retaining bead has an axial extension which is smaller that the axial extension of the thread, in particular less than 70% of the axial extension of the thread.
  • the closure is held on the container by the threads.
  • the threads therefore need to withstand high axial forces due to internal pressure.
  • the retaining bead being responsible for breaking this connection needs not to be as strong as the thread.
  • a container finish preferably as described above, which has at least one thread and a circumferential retaining bead for an anti-tamper strip, said bead protruding radially outwards.
  • At least a part of the upper side of the retaining bead in an axial cross section includes an angle of less than 10 DEG, in particular 5 DEG to 10 DEG, more particularly 8 DEG, with a plane perpendicular to the axis.
  • the lower side of the sealing bead is basically horizontal.
  • the angle between the lower side of the retaining bead and a plane perpendicular to the axis may deviate up to 3 DEG, is preferably 2 DEG.
  • a small angle between the upper side and the lower side of the retaining bead provides for a flat retaining bead.
  • the upper side of the retaining bead comprises a radially inner part arranged close to the essentially cylindrical outside surface of the finish and an outer part arranged adjacent and exterior with respect to the inner part of the upper side.
  • the inner part and the outer part have different angles to a plane perpendicular to the axis.
  • the radially outer part provides a sliding face for the tamper evident strip passing the retaining band.
  • the outer part of the upper side in an axial cross section includes an angle of 35 DEG - 45 DEG, in particular 40 DEG, with a plane perpendicular to the axis.
  • the ratio between the radial lengths of the inner part of the upper side and the radial length of the outer part of the upper side is between 1:1 and 2:1.
  • the basic shape of the retaining bead is determined by the inclination of the inner part of the upper side. Since the inner part of the surface includes a small angle with the plane perpendicular to the axis, the retaining bead has a small axial extension and has a flat appearance.
  • the finish comprises a total axial height extending from the underside of a transfer ring to the upper open end and an axial closing height extending from the underside of the retaining bead to the upper open end.
  • the ratio between the total axial height and the axial closing height is between 1.5:1 and 1.75:1.
  • the total axial height is 12 mm and the axial closing height is 7.4 mm.
  • These measures correspond to measures for finishes of containers for non carbonated products. Finishes for non carbonated beverages usually have a more simple form since there is no need for closing forces suitable to withstand internal pressure or for venting properties.
  • finish may be run on the same swing lines which are also used for bottling non carbonated beverages without considering huge handling equipment changeover.
  • a further aspect of the invention concerns a container with a container finish as described above.
  • a further aspect of the invention concerns in combination, a container finish as described above and a closure cap.
  • the closure cap comprises a top panel, a cylindrical skirt depending from the periphery of the top panel, said skirt possessing an essentially cylindrical inside surface with at least one thread protruding radially inwards.
  • closure cap comprises a tamper indicating band, frangibly connected to the open end of the skirt.
  • the tamper indicating band has a locking element with a retaining surface, which abuts against the lower surface of the retaining bead of the closure finish when the closure cap is applied to the container and opened for the first time.
  • the thread start of the closure located at the bottom end of the closure skirt has a truncated thread profile, in order to allow proper passage along the truncated thread end of the closure finish.
  • the lower side of the thread start of the closure is flattened.
  • the thread start of the closure has a smaller axial extension than the rest of the thread and matches with the upper side of the retaining bead.
  • Figure 1 is a first side view of a container finish 1 according to the present invention.
  • the container finish 1 has an essentially cylindrical outside surface 2 with one single thread 3.
  • the container finish 1 comprises several venting recesses 4, said venting recesses 4 interrupting the thread 3. Some venting recesses 4 are axially aligned and form a venting slot 5.
  • the thread 3 has a pitch 6 of 2.5 mm.
  • the container finish 1 possesses a circumferential retaining bead 7 for an anti-tamper strip, said bead protruding radially outwards.
  • the container finish 1 further comprises a transfer ring 8 also protruding radially outwards.
  • the total axial height 9 extending from the underside 10 of the transfer ring 8 to the upper open end 11 is 12mm.
  • the axial closing height 12 extending from the underside 13 of the retaining bead 7 to the upper open end 11 is 7.4mm.
  • the ratio between the total axial height 9 and the axial closing height 12 is about 1.5:1.
  • the typical inner diameter of the finish 1 is 21.74mm, the maximal outer diameter including the transfer ring 8 is 29.25mm.
  • the finish 1 is compatible to standard bottling lines.
  • Figure 2 is a second side view of the container finish 1.
  • the thread 3 comprises a horizontal truncated thread end 16, a flattened surface 14 on the lower side 15 of the thread end 16.
  • the truncation typically extends over the first thread segment.
  • the retaining bead 7 has an axial extension 17 which is smaller that the axial extension 18 of the thread 3.
  • Figure 3 is a sectional view of a part of the container finish 1.
  • the upper side 19 of the retaining bead 7 comprises a radially inner part 21 arranged close to the essentially cylindrical outside surface 2 of the finish 1 and an outer part 22 arranged adjacent and exterior with respect to the inner part 21 of the upper side 19.
  • the inner part 21 of the upper side 19 of the retaining bead 7 includes an angle 20 of 6 DEG, with a plane perpendicular to the axis of the finish.
  • the inner part 21 and the outer part 22 in an axial cross section include different angles with the lower side 13 of the retaining bead 7.
  • the outer part 22 includes an angle 23 of 40 DEG, with plane perpendicular to the axis.
  • the ratio between the radial lengths 24 of the inner part 21 and the radial length 25 of the outer part 22 is 1.5:1.
  • Figure 4 is a top view of the container finish 1.
  • the thread 3 is arranged on the outside surface 2 so as to extend over an angle 26 of 500 DEG.
  • venting slots 5 are arranged at regular circumferential spacings 27 of 60 DEG.
  • venting recesses 4 interrupt the thread 3 over an aperture angle 28 around the outside surface 2.
  • the aperture angle 28 is 10 DEG at the bottom 29 of the recess 4.
  • a first venting recess 104 is delimited by two lateral surfaces 30.
  • the lateral surfaces 30 include an angle 32 with respect to the radial line 33 connecting the centre 34 of the finish 1 and the centre 35 at the bottom of the venting recess 4 of 30 DEG.
  • a further venting recess 204 has a first lateral surface 230, including in a radial cross section a first angle 236 with respect to the radial line 233.
  • the venting recess 204 has a second lateral surface 231, including a second angle 237 with respect to the radial line 233.
  • the first angle 236 and second angle 237 are different: The first angle 236 is 30 DEG and the second angle is 60 DEG.
  • Asymmetric venting recesses 204 are arranged close to the parting line 38 of the moulding tool (not shown in the figure), whereas symmetric venting recesses 104 are arranged perpendicular to the parting line.
  • the orientation of the lateral surfaces 30, 230, 231 pointing away from the parting lines facilitates the de-moulding.
  • Figure 5 is a sectional view of a combination of a closure finish 1 and a closure cap 40 comprising a top panel 41, a cylindrical skirt 42 depending from the periphery of the top panel 41.
  • the skirt 42 possesses an essentially cylindrical inside surface with at least one thread 43 protruding radially inwards and a tamper indicating band 44, frangibly connected to the open end 45 of the skirt 42 (bridges are not explicitly shown in this sectional view).
  • the thread 3 of the finish comprises a horizontal truncated thread end 16.
  • a flattened surface 14 is arranged on the lower side 15 of the thread end 16. The flattened surface provides more axial space between the lower side 15 of the thread end 16 and the retaining bead 7.
  • the thread start 46 of the closure cap 40 which is located near the open end 45 of the skirt 42 is also truncated.
  • the thread start 46 has a flattened surface 47 on its lower side 48.
  • the thread start 46 may be located in the axial gap between the thread end 16 of the closure finish and the retaining bead 7.
  • the lower side 48 of the thread start matches with the upper side of the retainer bead 7.
  • closure cap 40 may be brought to the fully screwed on position.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Ceramic Engineering (AREA)
  • Closures For Containers (AREA)
EP20156999.3A 2012-07-16 2012-07-16 Behälterabschluss und kombination aus einem behälterabschluss und verschlusskappe Withdrawn EP3712080A1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP20156999.3A EP3712080A1 (de) 2012-07-16 2012-07-16 Behälterabschluss und kombination aus einem behälterabschluss und verschlusskappe

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP12176574.7A EP2687450A1 (de) 2012-07-16 2012-07-16 Behälterhals und Kombination aus einem Behälterhals und einer Verschlusskappe
EP20156999.3A EP3712080A1 (de) 2012-07-16 2012-07-16 Behälterabschluss und kombination aus einem behälterabschluss und verschlusskappe

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
EP12176574.7A Division EP2687450A1 (de) 2012-07-16 2012-07-16 Behälterhals und Kombination aus einem Behälterhals und einer Verschlusskappe

Publications (1)

Publication Number Publication Date
EP3712080A1 true EP3712080A1 (de) 2020-09-23

Family

ID=48917507

Family Applications (2)

Application Number Title Priority Date Filing Date
EP12176574.7A Withdrawn EP2687450A1 (de) 2012-07-16 2012-07-16 Behälterhals und Kombination aus einem Behälterhals und einer Verschlusskappe
EP20156999.3A Withdrawn EP3712080A1 (de) 2012-07-16 2012-07-16 Behälterabschluss und kombination aus einem behälterabschluss und verschlusskappe

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP12176574.7A Withdrawn EP2687450A1 (de) 2012-07-16 2012-07-16 Behälterhals und Kombination aus einem Behälterhals und einer Verschlusskappe

Country Status (3)

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EP (2) EP2687450A1 (de)
AR (1) AR091777A1 (de)
WO (1) WO2014012904A2 (de)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105501600A (zh) * 2016-01-18 2016-04-20 滁州嘉美印铁制罐有限公司 带有螺纹的罐容器
US11214410B2 (en) 2016-02-02 2022-01-04 Niagara Bottling, Llc Tamper evidence container closure
CA3013581A1 (en) 2016-02-02 2017-08-10 Niagara Bottling, Llc Tamper evidence bridges
US11597556B2 (en) 2018-07-30 2023-03-07 Niagara Bottling, Llc Container preform with tamper evidence finish portion
US20230150183A1 (en) * 2021-11-16 2023-05-18 Ring Container Technologies, Llc Container and method of manufacture

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4007848A (en) * 1975-05-09 1977-02-15 Zapata Industries, Inc. Anti-missiling bottle structure
EP0009854A1 (de) * 1978-09-15 1980-04-16 Metal Closures Limited Verschlusskappe und Verschlusskappe mit Behälter
US4242398A (en) 1979-01-16 1980-12-30 Teijin Limited Fibrous shaped article having non-level surface
US4643330A (en) * 1986-03-27 1987-02-17 Owens-Illinois, Inc. Container systems
WO1997028057A1 (de) 1996-01-30 1997-08-07 Crown Cork Ag Behälterfinish und verschlusskappe mit 2-gängigem gewinde
US20050150856A1 (en) * 2002-08-09 2005-07-14 Yoshino Yogyosho Co., Ltd. Mouth tube portion of synthetic resin bottle body
US20090045158A1 (en) * 2007-08-14 2009-02-19 Alcoa Closure Systems International, Inc. Threaded closure with internal ribs
US7866496B2 (en) 2007-09-21 2011-01-11 Stokely-Van Camp, Inc. Lightweight finish for hot-fill container
EP2316630A1 (de) * 2008-07-23 2011-05-04 Du Pont-Mitsui Polychemicals Co., Ltd. Harzformungsvorrichtung, harzformungsverfahren und harzbehälter

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2105693B (en) * 1981-07-31 1985-03-20 Ug Closures And Plastics Limit Closures and containers

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4007848A (en) * 1975-05-09 1977-02-15 Zapata Industries, Inc. Anti-missiling bottle structure
EP0009854A1 (de) * 1978-09-15 1980-04-16 Metal Closures Limited Verschlusskappe und Verschlusskappe mit Behälter
US4242398A (en) 1979-01-16 1980-12-30 Teijin Limited Fibrous shaped article having non-level surface
US4643330A (en) * 1986-03-27 1987-02-17 Owens-Illinois, Inc. Container systems
WO1997028057A1 (de) 1996-01-30 1997-08-07 Crown Cork Ag Behälterfinish und verschlusskappe mit 2-gängigem gewinde
US20050150856A1 (en) * 2002-08-09 2005-07-14 Yoshino Yogyosho Co., Ltd. Mouth tube portion of synthetic resin bottle body
US20090045158A1 (en) * 2007-08-14 2009-02-19 Alcoa Closure Systems International, Inc. Threaded closure with internal ribs
US7866496B2 (en) 2007-09-21 2011-01-11 Stokely-Van Camp, Inc. Lightweight finish for hot-fill container
EP2316630A1 (de) * 2008-07-23 2011-05-04 Du Pont-Mitsui Polychemicals Co., Ltd. Harzformungsvorrichtung, harzformungsverfahren und harzbehälter

Also Published As

Publication number Publication date
EP2687450A1 (de) 2014-01-22
WO2014012904A2 (en) 2014-01-23
AR091777A1 (es) 2015-02-25
WO2014012904A3 (en) 2014-05-30

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