US20130058595A1 - Screw closure for soft packaging - Google Patents

Screw closure for soft packaging Download PDF

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Publication number
US20130058595A1
US20130058595A1 US13/696,269 US201113696269A US2013058595A1 US 20130058595 A1 US20130058595 A1 US 20130058595A1 US 201113696269 A US201113696269 A US 201113696269A US 2013058595 A1 US2013058595 A1 US 2013058595A1
Authority
US
United States
Prior art keywords
spout
cap
screw closure
screw
thread
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.)
Abandoned
Application number
US13/696,269
Other languages
English (en)
Inventor
Dirk Ekenhorst
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch 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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Assigned to ROBERT BOSCH GMBH reassignment ROBERT BOSCH GMBH ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: EKENHORST, DIRK
Publication of US20130058595A1 publication Critical patent/US20130058595A1/en
Abandoned 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
    • B65D5/00—Rigid or semi-rigid containers of polygonal cross-section, e.g. boxes, cartons or trays, formed by folding or erecting one or more blanks made of paper
    • B65D5/42—Details of containers or of foldable or erectable container blanks
    • B65D5/72—Contents-dispensing means
    • B65D5/74—Spouts
    • B65D5/746—Spouts formed separately from the container
    • B65D5/747—Spouts formed separately from the container with means for piercing or cutting the container wall or a membrane connected to said wall
    • B65D5/748—Spouts formed separately from the container with means for piercing or cutting the container wall or a membrane connected to said wall a major part of the container wall or membrane being left inside the container after the opening
    • 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
    • B65D41/02—Caps or cap-like covers without lines of weakness, tearing strips, tags, or like opening or removal devices
    • B65D41/04—Threaded or like caps or cap-like covers secured by rotation
    • B65D41/0407—Threaded or like caps or cap-like covers secured by rotation with integral sealing means
    • B65D41/0414—Threaded or like caps or cap-like covers secured by rotation with integral sealing means formed by a plug, collar, flange, rib or the like contacting the internal surface of a container neck
    • B65D41/0421—Threaded or like caps or cap-like covers secured by rotation with integral sealing means formed by a plug, collar, flange, rib or the like contacting the internal surface of a container neck and combined with integral sealing means contacting other surfaces of a container neck
    • 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
    • B65D41/02—Caps or cap-like covers without lines of weakness, tearing strips, tags, or like opening or removal devices
    • B65D41/04—Threaded or like caps or cap-like covers secured by rotation
    • B65D41/0407—Threaded or like caps or cap-like covers secured by rotation with integral sealing means
    • B65D41/0428—Threaded or like caps or cap-like covers secured by rotation with integral sealing means formed by a collar, flange, rib or the like contacting the top rim or the top edges or the external surface of a container neck
    • 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
    • B65D75/00—Packages comprising articles or materials partially or wholly enclosed in strips, sheets, blanks, tubes, or webs of flexible sheet material, e.g. in folded wrappers
    • B65D75/52—Details
    • B65D75/58—Opening or contents-removing devices added or incorporated during package manufacture
    • B65D75/5861—Spouts
    • B65D75/5872—Non-integral spouts
    • B65D75/5877—Non-integral spouts connected to a planar surface of the package wall

Definitions

  • the present invention relates to a screw closure for soft packagings, namely film bags, consisting of a spout, which is mounted on the film bag and has external thread and a fastening flange, and a cap which can be screwed onto the spout and has a top surface and a lateral wall.
  • Screw closures for rigid packagings are widely used.
  • the screw closures have to only substantially ensure a sealing function in the completely closed state.
  • Said sealing function takes place with different forms of seals, wherein particularly seals are used which comprise sealing elements that are disposed in the corner area between the lateral wall and the inside of the top surface.
  • seals are described in the WIPO patent specification WO-A-9011944 and also in the WIPO patent specification WO-A-9011232 as well as in the WIPO patent specification WO-A-9731834.
  • sealing olives represent another type of seals on screw closures, which are designed substantially as a ring wall running coaxially with respect to the lateral wall of the screw cap. Said sealing olives are integrally formed on the bottom side of the top surface in a vertically downward direction and seal off the container neck or the spout on the inside.
  • the German patent publication DE-A-44 01 751 and the American patent publication U.S. Pat. No. 4,253,581 describe a typical example of such a sealing olive. Combinations of the two previously mentioned types are also known as, for example, the European Parliament patent specification EP-A-417554 demonstrates.
  • the spout is formed from a separate part which consists of the actual, cylindrical, tubular spout having a flange integrally formed thereon, said flange serving to fasten this part of the screw closure onto the soft packaging.
  • Two different variants are basically known with regard to this type of screw closures.
  • the first variant includes those closures in which a hole is punched out in the film of the soft packaging in the region of the spout, said hole being directly connected to and communicating with the spout, and wherein the flange is adhesively bonded or welded around said punched-out hole.
  • the second variant consists of the film bag being completely closed and of an internal thread being additionally arranged on the inside wall of the spout.
  • An annular cutting element is disposed in the internal thread so as to be transaxially movable, and said cutting element can be moved via driving elements on the top surface of the screw cap.
  • the cutting element is operated by means of the screwing motion of the cap and has at least one cutting tooth on the lower edge thereof pointed in the direction of the film of the film bag. The cutting tooth can thus cut open the film of the film bag.
  • Typical examples of this second variant are known from the Swiss patent specification CH-A-695019 or from the European Parliament patent specification EP-A-1795456 as well as from diverse other documents.
  • the screw caps can be additionally provided with tamper-evident bands.
  • a circumferential sealing nose is integrally formed on the lateral wall of the screw cap directly above the internal thread. When completely screwed on, said sealing nose comes to rest directly in the region of the spout's upper edge and can extend downwardly beyond said edge. Furthermore in such a solution, the seal is already no longer in engagement at a slight unscrew angle and is likewise consequently impractical for the use intended here. In the 60s of the previous century, plastic closures could still hardly be produced with a high degree of precision.
  • German patent specification DE-1935874 describes a solution.
  • the seal is already no longer provided after practically a single rotation, which however, as previously mentioned, does not present a problem for relatively rigid bottles.
  • the solution should be applicable to conventional screw closures, the spout of which is mounted above an already present opening in the soft packaging, as well as particularly to soft packagings which are completely aseptically closed and which have a cutting element inside in the spout, which cuts open the soft packaging when the screw closure is opened.
  • FIG. 1 shows the manipulation of a screw closure on a soft packaging in a perspective view
  • FIG. 2 shows a diametric vertical section through a screw closure according to the invention without a cutting element
  • FIG. 3 shows a second embodiment of the screw closure according to the invention, once again in a diametric vertical section and this time having a cutting element in the completely closed position
  • FIG. 4 shows the same screw closure in a partially opened intermediate position, in which the threads on the spout and screw cap are still engaged
  • FIG. 5 shows again the same screw closure, wherein the screw cap is opened to such an extent that the aforementioned threads are no longer engaged; however, a sealing situation is still present, whereas
  • FIG. 6 shows the screw closure according to the invention in a completely opened position.
  • FIG. 1 the screw position when opening a screw closure, which is provided on a soft packaging 1 , is depicted.
  • the soft packaging can be a laminated cardboard packaging or, as is here of particular importance, a film bag as the one shown in FIG. 1 .
  • the user holds the bag in one hand while he or she at the same time unscrews the screw closure 2 with the other hand. In so doing, said user exerts a force F on the film bag.
  • the internal pressure in the film bag is increased.
  • the screw closure is in this instance related to a conventional embodiment, the increased internal pressure would lead to the liquid being able to escape between spout and screw cap 5 .
  • the solution according to the invention remedies the problem.
  • FIG. 2 A first embodiment of the subject matter of the invention is now depicted in FIG. 2 .
  • the screw closure is denoted in its entirety with the reference numeral 1 .
  • a screw cap 5 is on the one hand understood and on the other hand a lower part, which consists of a tubular, cylindrical spout 3 , on the lower edge of which a radially protruding flange 4 is integrally formed.
  • An exterior thread is integrally formed to the outside of the tubular spout 3 .
  • a thread-free section on the spout 3 can be seen.
  • the thread-free section 7 is preferably at least the same length as the section 8 which runs in the axial direction and in which the external thread 6 is provided.
  • the cap 5 has substantially the general design of screw caps. Said cap has a top surface 50 which is adjoined by a lateral wall 51 in a downward descending manner.
  • the lateral wall 51 is substantially of cylindrical design.
  • said only unusual aspect is that said lateral wall 51 is provided with an internal thread 52 in the lower region, which fits to the aforementioned external thread 6 of the spout 3 .
  • an internal thread-free region now ensues, which is approximately the same size as the thread-free section 7 of the spout 3 .
  • circumferential sealing beads 54 are present in the corner region between the top surface 50 and the lateral wall 51 . These sealing beads 54 form a static seal in the closed position of the closure, said seal being also able to withstand high internal pressure loads.
  • a sliding seal 10 is integrally formed on the inner surface of the lateral wall 51 of the cap 5 . This sliding seal 10 bears with a specified contact pressure on the outside of the spout 3 .
  • the screw cap 5 is already unscrewed somewhat. If the screw cap 5 were shown in the completely screwed-in position, the sealing beads 54 would then rest against the upper edge of the spout 3 and the sliding seal 10 would be in contact with the spout 3 slightly above the region 8 of the external thread 6 . With this arrangement, the cap can now be unscrewed to such an extent that the external thread 6 of the spout 3 just no longer engages with the internal thread 52 of the cap 5 and the sliding seal 10 still barely rests on the outer surface of the spout 3 .
  • the shape of the sliding seal 10 selected here is one possible embodiment among many. It is only essential that the sliding seal is subjected to a certain deformation force.
  • the spout 3 must have for the purpose of demolding a certain amount of taper so that the inside diameter on the upper edge is slightly smaller than the inside diameter in the region of the flange 4 .
  • the wall thickness of the spout 3 too decreases slightly from the region of the flange to the upper edge so that overall the spout 3 in the thread-free section 7 runs slightly conically and the sliding seal 10 must be able to follow this conicity and be in contact in the uppermost region with a certain amount of pressing force.
  • the sliding seal takes the shape of a circumferential apron that is directed downwardly, ie. with the flexible tip thereof, toward the flange . . . (parts of sentence missing in the original between lines 14 and 15 on page 10).
  • the sliding seal can also alternatively be designed more precisely as a so-called sealing lip, which is able per se to receive less force.
  • a plurality of such circumferential sealing lips is then preferably provided. Said sealing lip can, for example, in effect protrude vertically from the inside of the lateral wall, and they are automatically arched upwards when the screw cap is fitted.
  • FIGS. 3-6 a screw cap 2 is again shown on a soft packaging 1 .
  • the spout 3 and the flange 4 thereof are unchanged with the exception of an internal thread 22 .
  • the aforementioned cutting element 20 is mounted in the spout 3 so as to be movable in a screw-like fashion.
  • a driving element 23 on the inner surface of the cutting element, serves as a stop for a second driving element 24 which projects vertically downwards from the top surface 50 of the cap.
  • a sliding seal 10 which can be seen clearly in FIG. 6 , is also again present in this version just as was previously described with the aid of FIG. 2 . Particularly in this embodiment, it is very evident that it is not possible in this case to have a seal on the inside of the spout. Also in this version, the inventive solution that was already described allows, in a practically unchanged manner, for a screw closure to be used.
  • the screw cap can be additionally provided with a tamper-evident band 40 , which can be attached in a positive-locking manner behind a circumferential collar 30 on the spout 3 below the external thread.
  • a tamper-evident band 40 which is integrally formed on the lower edge 55 of the screw cap 5 by means of predetermined breaking point bridges 4 , is torn away and remains hanging below the aforementioned collar 10 .
  • This situation is depicted on the right side of FIG. 2 , whereas on the left side a tamper-evident band 40 , which likewise engages behind the collar 30 , is depicted.
  • Said tamper-evident band 40 however is removed, for example, by a tear-off tab, wherein in turn the predetermined breaking point bridges, which connect the tamper-evident band to the screw cap, are destroyed.
  • the predetermined breaking point bridges are denoted with the reference numeral 41 . Said predetermined breaking point bridges can, however, only be seen in the severed condition, on the one hand as remains on the tamper-evident band 40 and on the other hand on the lower edge 54 of the screw cap 5 .
  • the solution according to the invention can also be implemented by the sliding seal being mounted to the outside of the spout instead of to the lateral wall 51 of the cap 5 .
  • two variants are worth considering, namely either to mount the sliding seal directly above the thread or in the region of the upper edge of the spout 3 .
  • the sliding seal has to be designed relatively long in order to be able to seal up the thread across the uneven spots thereof.
  • the sliding ring seal can be shorter in the radial extension and as a result a plurality of sealing rings are also worth considering in this case; whereas in the first variant, apron-like sliding ring seals are more likely to be useful.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Closures For Containers (AREA)
  • Bag Frames (AREA)
US13/696,269 2010-05-04 2011-03-04 Screw closure for soft packaging Abandoned US20130058595A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102010028522.6 2010-05-04
DE102010028522A DE102010028522A1 (de) 2010-05-04 2010-05-04 Schraubverschluss für Weichverpackungen
PCT/EP2011/053338 WO2011138062A1 (de) 2010-05-04 2011-03-04 Schraubverschluss für weichverpackungen

Publications (1)

Publication Number Publication Date
US20130058595A1 true US20130058595A1 (en) 2013-03-07

Family

ID=43928046

Family Applications (1)

Application Number Title Priority Date Filing Date
US13/696,269 Abandoned US20130058595A1 (en) 2010-05-04 2011-03-04 Screw closure for soft packaging

Country Status (8)

Country Link
US (1) US20130058595A1 (de)
EP (1) EP2566768B1 (de)
JP (1) JP2013525223A (de)
CN (1) CN102869580B (de)
BR (1) BR112012027867A2 (de)
DE (1) DE102010028522A1 (de)
RU (1) RU2012151561A (de)
WO (1) WO2011138062A1 (de)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20150048002A1 (en) * 2013-08-15 2015-02-19 Sheng Ming Wang Two Nested and Interlocked Beverage Containers
US20150321798A1 (en) * 2013-01-25 2015-11-12 Tokan Kogyo Co., Ltd. Container sealing device
EP3489167A1 (de) 2017-11-28 2019-05-29 IM Production Anordnung, die eine verschlusskappe und einen behälter umfasst
CN110283706A (zh) * 2019-07-22 2019-09-27 安图实验仪器(郑州)有限公司 螺旋式反应管
US10676261B2 (en) 2017-09-07 2020-06-09 Silgan White Cap LLC Closure assembly
US20210086210A1 (en) * 2017-07-14 2021-03-25 3M Innovative Properties Company Fluid delivery assembly for a spray gun
US11059633B2 (en) 2019-10-31 2021-07-13 Cheer Pack North America Flip-top closure for container
EP4098582A4 (de) * 2020-01-31 2024-02-21 Fuji Seal International, Inc. Verpackungskörper für beutelbehälter und verpackung für beutelbehälter

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013102141A1 (de) * 2013-03-05 2014-09-11 Seibel & Reitz GmbH & Co. KG Verschluss
DE102013204208A1 (de) 2013-03-12 2014-10-02 Robert Bosch Gmbh Verfahren zur Herstellung von Schlauchbeuteln
EP4056488B1 (de) * 2021-03-10 2024-05-01 SIG Services AG Ausgiesselement und verbundpackung mit verbessertem öffnungsverhalten

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US4917269A (en) * 1989-05-10 1990-04-17 Owens-Illinois Closure Inc. Liquid containing and dispensing package
US5421470A (en) * 1991-03-06 1995-06-06 Lawson Mardon Sutton Ltd. Cap for sealing a container
US6981603B1 (en) * 2001-08-15 2006-01-03 Silgan Plastics Corporation Package including a container with a wide-mouth spout and enclosure sealing the spout
US7036683B2 (en) * 2000-10-03 2006-05-02 Bericap Holding Gmbh Plastic closing device with a piercing element

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US3897874A (en) * 1974-06-10 1975-08-05 Gex B Coons Pressurized storage container
US4917269A (en) * 1989-05-10 1990-04-17 Owens-Illinois Closure Inc. Liquid containing and dispensing package
US5421470A (en) * 1991-03-06 1995-06-06 Lawson Mardon Sutton Ltd. Cap for sealing a container
US7036683B2 (en) * 2000-10-03 2006-05-02 Bericap Holding Gmbh Plastic closing device with a piercing element
US6981603B1 (en) * 2001-08-15 2006-01-03 Silgan Plastics Corporation Package including a container with a wide-mouth spout and enclosure sealing the spout

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20150321798A1 (en) * 2013-01-25 2015-11-12 Tokan Kogyo Co., Ltd. Container sealing device
US10086980B2 (en) * 2013-01-25 2018-10-02 Tokan Kogyo Co., Ltd. Container sealing device
US20150048002A1 (en) * 2013-08-15 2015-02-19 Sheng Ming Wang Two Nested and Interlocked Beverage Containers
US20210086210A1 (en) * 2017-07-14 2021-03-25 3M Innovative Properties Company Fluid delivery assembly for a spray gun
US10676261B2 (en) 2017-09-07 2020-06-09 Silgan White Cap LLC Closure assembly
US11718457B2 (en) 2017-09-07 2023-08-08 Silgan White Cap LLC Closure assembly
EP3489167A1 (de) 2017-11-28 2019-05-29 IM Production Anordnung, die eine verschlusskappe und einen behälter umfasst
FR3074154A1 (fr) * 2017-11-28 2019-05-31 IM Production Bouchon
CN110283706A (zh) * 2019-07-22 2019-09-27 安图实验仪器(郑州)有限公司 螺旋式反应管
US11059633B2 (en) 2019-10-31 2021-07-13 Cheer Pack North America Flip-top closure for container
EP4098582A4 (de) * 2020-01-31 2024-02-21 Fuji Seal International, Inc. Verpackungskörper für beutelbehälter und verpackung für beutelbehälter

Also Published As

Publication number Publication date
BR112012027867A2 (pt) 2016-08-09
DE102010028522A1 (de) 2011-11-10
CN102869580A (zh) 2013-01-09
EP2566768A1 (de) 2013-03-13
JP2013525223A (ja) 2013-06-20
EP2566768B1 (de) 2016-09-21
RU2012151561A (ru) 2014-06-20
WO2011138062A1 (de) 2011-11-10
CN102869580B (zh) 2015-07-22

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