EP0280024B1 - Drehverschluss für Behälter - Google Patents

Drehverschluss für Behälter Download PDF

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Publication number
EP0280024B1
EP0280024B1 EP88100596A EP88100596A EP0280024B1 EP 0280024 B1 EP0280024 B1 EP 0280024B1 EP 88100596 A EP88100596 A EP 88100596A EP 88100596 A EP88100596 A EP 88100596A EP 0280024 B1 EP0280024 B1 EP 0280024B1
Authority
EP
European Patent Office
Prior art keywords
screw
screwing ring
threads
ring
annular
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.)
Expired - Lifetime
Application number
EP88100596A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0280024A1 (de
Inventor
Heinrich Eberhardt
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to AT88100596T priority Critical patent/ATE74861T1/de
Publication of EP0280024A1 publication Critical patent/EP0280024A1/de
Application granted granted Critical
Publication of EP0280024B1 publication Critical patent/EP0280024B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • B65D51/00—Closures not otherwise provided for
    • B65D51/14—Rigid discs or spherical members adapted to be held in sealing engagement with mouth of container, e.g. closure plates for preserving jars
    • B65D51/145—Rigid discs or spherical members adapted to be held in sealing engagement with mouth of container, e.g. closure plates for preserving jars by means of an additional element connected directly to the container

Definitions

  • the invention is based on a rotary closure for containers with a mouth, on the end face of which an annular surface cooperating with an annular sealing insert of the closure and on the periphery of which the rotary connection enabling threads are provided, which interact with corresponding threads on an apron section of the rotary closure,
  • the rotary closure is formed in two parts and consists of a threaded ring and a plate-shaped cover having the sealing insert, which is arranged in the screw ring in a radially positively fitting manner at an axial distance above the area of the thread, and the screw ring made of a moldable plastic and the cover part There is sheet metal.
  • a rotary closure for containers has already been proposed, as specified in the preamble of claim 1 (DE-OS 33 22 326).
  • Such a twist lock in which the cover delimits radially and axially, but is loose in the screw ring, but has a major disadvantage, namely when such a screw cap is used for containers in which a vacuum is created after filling and there is no fixed connection between the metal lid and the plastic ring, since the metal lid of the Vacuum is held on the container mouth, and the screw ring only due to the friction on the thread. This can then easily loosen, which often gives the impression to buyers of such packaging containers that the container has already been opened. Due to today's demands of the trade to provide such packaging containers with a safety device, it is a disadvantageous phenomenon.
  • the sheet metal cover must be inserted over the open threaded part. This is only possible if the outer diameter is only slightly larger than the inner edge of the support or the thread tips in the screw ring.
  • the US-PS 4,560,076 relates to a locking ring for a sheet metal lid, which is probably applied subsequently, the connection of the closure to the container being realized by the sealing part lying laterally in the sheet metal apron. It describes a twist lock for containers with a mouth, on the end face of which an annular surface cooperating with an annular sealing insert of the closure and on the circumference of which threads are provided which enable the twist connection, which is pressed into the sealing insert which extends into the region of an apron section. On the apron section of the one-piece sheet metal cover, a roller is provided for fastening the retaining ring, which tears open in the central breaking point when opened. The design of this twist lock only affects a one-piece cover, in which the elastic sealant is used as a clasp on the thread.
  • U.S. Patent 3,411,651 relates to filling gaps under the lid to prevent infection. A barrier against pollution is to be created.
  • a closure for vessels in the medical field which consists of an attachment part and a screw ring acting on it.
  • the vessel is opened, the bottle neck-like spout is broken open and the attachment part is designed in such a way that it can be held on the neck-like spout again by changing over the breaking point when the positioning is changed.
  • the present invention is therefore based on the object of developing a rotary closure of the type mentioned in such a way that a good seal can be achieved after filling and also after opening when the container is reclosed, with the aim being to ensure that none between the cover part and the screw ring there is axial play and the only connection between the cover part and the screw ring is laid in the side area at an axial distance from the sealing area.
  • the section above and below the bead has centering sections.
  • the ring part is designed such that a strong turning is made possible and that at the lower end of the ring part an engagement part is arranged, which is designed as a curl. Since tensile forces are to be transmitted from the screw ring to the cover, it is advantageous to design the engaging part as a closed curl and to reduce the rigidity as an interrupted curl.
  • the engagement form in the screw ring is designed by an angular bead so that the curling is always fixed.
  • the screw ring with a centering for the sheet metal lid and for the container is also provided. Here, too, the insertion takes place from the top of the screw ring.
  • the ring part consists of a vertical section and an engagement part is arranged at the lower end of the ring part, which as an outwardly offset open step consisting of a flange for power transmission and an adjoining vertical part, is formed and is arranged in an inwardly open, approximately rectangular cross-section having an annular groove of the screw ring.
  • This shape should be used when the thread from the container begins deeper at the mouth, so that the glass wall can be drawn in, i.e. kept thinner, and the sheet metal cover also becomes smaller (ring channel at the mouth). As a result, the protrusion of the step to the thread of the screw ring is less, so that the sheet metal cover can be inserted from the threaded side of the screw ring.
  • the threaded part of the screw ring is designed as a nut thread.
  • the part of the screw ring located above the step is designed as a centering for the sheet metal cover.
  • the curling or the step to reduce the rigidity is provided with vertically extending recesses or folds.
  • a rotary closure for containers with a mouth on the end face of which cooperates with an annular sealing insert of the closure ring surface and on the circumference of which the rotary connection enabling threads are provided, which with corresponding Threads cooperate on an apron section of the twist lock
  • the twist lock being formed in two parts and consisting of a screw ring having a thread and a plate-shaped cover having the sealing insert, which is arranged in a form-fitting manner with respect to the screw ring, and the screw ring made of a moldable plastic and the cover part made of sheet metal there is provided, in which an outwardly offset step part for receiving the screw ring is connected to the vertical ring part of the cover, the step part having an outwardly displaced encompassing section, which has a rectangular cross section corresponding to the outer profile of the screw ring and is provided at its lower end with a section bent over to hold the screw ring after it has been received and encloses the
  • a lower closed groove shape is provided as an engaging part for receiving the screw ring after the vertical ring part.
  • This closed step shape is another excellent embodiment of the invention.
  • the screw ring consists only of the threaded part, which is inserted into the initially still open gripping section and subsequently connected positively by the flanging.
  • This embodiment enables a full printing of the side cover part of the sheet metal cover and thereby the monochrome screw ring made of plastic is covered.
  • a rotary closure 100 which consists of a screw ring 10 and a cover part 20 and with which the mouth of a container neck of a container 50, not shown in the drawing, is closed.
  • the screw ring 10 which is made of a moldable plastic, e.g. made of polypropylene, has in its lower region inwardly directed thread segments 40 which can be engaged in corresponding thread segments 51 on the outside of the container neck in order to enable a screw connection.
  • the cover 20 is made of sheet metal, preferably of deformable aluminum sheet, and has an approximately plate-like shape, which consists of a closure part 25 with an adjoining downwardly open sealing channel 26 in which the sealing ring or sealing compound 30 is arranged the upper end face 50a of the container neck of the container 50 can be placed in a sealing manner.
  • a ring part 21 bent downwards, which consists of the sections 21a and 21b and in which an outwardly surrounding bead 22 is formed, which engages in an annular groove 11 in the screw ring 10.
  • Centering sections 16 for the cover 20 are formed above and below the annular groove 11.
  • the cover 120 has an annular part 121 which is deformed downward and adjoins the sealing channel 126 for the seal 130 and at the lower end of which an engagement part 122 is arranged, which consists of a flanging or curling having a circular cross section exists and engages in an annular groove 111 formed in the screw ring 110.
  • the screw ring 110 is provided with a vertical centering section 116 for the cover 20, which is followed by an angular bead which is designed as an annular groove with conical inlet flanks.
  • the lid part 120 is pulled onto the container neck via the annular groove 111 and the engaging part 122, so that a secure seal is ensured via the sealing compound 130 even if the container neck is not planar. Since the annular groove 111 and the engaging part 122 have corresponding shapes, a play-free, positive connection 160 of the cover part 120 in the screw ring 110 is ensured.
  • the centering ring Z1 which can also consist of ring segments, is arranged below the ring groove 11; 111.
  • the centering ring Z1 is dimensioned in its inner or contact surface diameter D2 in such a way that it centers the screw ring 10; 110 and thus the rotary closure 100; 200 on the container neck. This makes it possible to apply a high screwing or tightening torque despite the tolerances occurring between the screw ring side and the container neck side for manufacturing reasons, without the risk of the thread segments pressing away from one another (FIGS. 1 and 2).
  • the introduction of the sheet metal cover in the screw ring is achieved in that the curling can be interrupted and thus can deflect elastically inwards and then snap into the engaging form.
  • the curling can move as far as the container wall by turning it too hard or unscrewing it, but it remains non-positively connected.
  • the cover part 220 has the same Basic elements as described above.
  • the sealing channel 226 for the seal 230 is followed by a downwardly bent ring part 221, on which an outwardly displaced step is formed as the engaging part, which consists of a flange 222a and an adjoining vertical part 222b which fits into a screw ring trained annular groove 211 engages, which forms the form-fitting counterpart of the screw ring 210.
  • the screw ring has a centering section 216 for the ring part 221 opposite the ring part 221, to which the ring groove 211 and subsequently a holding section 217 adjoins, a thread 218 being cut into the holding section 217 into the corresponding thread segments 51 on the outside of the container neck 50 can be engaged to enable a screw connection.
  • the cover part 320; 320 ' has the same basic elements as those described above.
  • the ring part 321 connects to the sealing channel 316; 316 'for the seal 330 with a relatively long 321a or, in the embodiment indicated by the dashed line, a relatively short section 321a', with the section 321a; 321a 'being connected to the outside via a section 322a Staggered gripping section 322 is connected, which has a rectangular cross section corresponding to the outer profile of the screw ring 310 and at its lower end with a for holding the screw ring after receiving the bent Section 322c is provided.
  • the screw ring 310 is designed as a simple ring insert, in the holding section 311 of which a thread 312 is cut, into which corresponding thread segments 51 on the outside of the container neck of the container 50 can be engaged in order to enable a screw connection.
  • twist lock is essentially rotationally symmetrical about a vertical central axis, not shown in the drawing.
  • This design of a screw cap in which the lid part is not pressed concentrically onto the container mouth, but is only or partially pulled, which is made possible by the plastic screw ring, represents a useful addition to a container if it consists of a material such as glass.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Closures For Containers (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Mechanical Operated Clutches (AREA)
EP88100596A 1987-01-18 1988-01-18 Drehverschluss für Behälter Expired - Lifetime EP0280024B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT88100596T ATE74861T1 (de) 1987-01-18 1988-01-18 Drehverschluss fuer behaelter.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE8700722U 1987-01-18
DE8700722U DE8700722U1 (de) 1987-01-18 1987-01-18 Drehverschluß für Behälter

Publications (2)

Publication Number Publication Date
EP0280024A1 EP0280024A1 (de) 1988-08-31
EP0280024B1 true EP0280024B1 (de) 1992-04-15

Family

ID=6803686

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88100596A Expired - Lifetime EP0280024B1 (de) 1987-01-18 1988-01-18 Drehverschluss für Behälter

Country Status (6)

Country Link
EP (1) EP0280024B1 (enrdf_load_stackoverflow)
AT (1) ATE74861T1 (enrdf_load_stackoverflow)
DE (2) DE8700722U1 (enrdf_load_stackoverflow)
DK (1) DK165585C (enrdf_load_stackoverflow)
ES (1) ES2030767T3 (enrdf_load_stackoverflow)
GR (1) GR3004392T3 (enrdf_load_stackoverflow)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4989740A (en) * 1990-03-07 1991-02-05 Continental White Cap, Inc. Composite cap including tamper indicating feature
GB9005417D0 (en) * 1990-03-10 1990-05-09 Metal Box Plc Screw closures for containers
US4981230A (en) * 1990-03-15 1991-01-01 Continental White Cap, Inc. Composite cap including tamper indicating band
US6662958B2 (en) * 2002-01-31 2003-12-16 Crown Cork & Seal Technologies Corporation Composite closure having disk tightening feature

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3411651A (en) * 1966-10-31 1968-11-19 Owens Illinois Inc Barrier for closures
US3746199A (en) * 1971-06-14 1973-07-17 Anchor Hocking Corp Closure cap and sealed package
US3820678A (en) * 1972-09-05 1974-06-28 Continental Can Co Tamper-proof closure
US4176755A (en) * 1979-01-26 1979-12-04 Baxter Travenol Laboratories, Inc. Resealable pour bottle with severing ring
US4227618A (en) * 1979-06-21 1980-10-14 The Continental Group, Inc. Expansion section for tamper-indicating ring of squeeze-off closure
DE3322326A1 (de) * 1983-06-21 1985-01-03 Continental White Cap, Inc., Northbrook, Ill. Drehverschluss fuer behaelter
US4560076A (en) * 1984-04-17 1985-12-24 Continental White Cap, Inc. Tamper indicating band for use in low rise cam-off application

Also Published As

Publication number Publication date
DK165585C (da) 1993-05-03
ES2030767T3 (es) 1992-11-16
DE8700722U1 (de) 1987-02-26
DK165585B (da) 1992-12-21
DE3869993D1 (de) 1992-05-21
DK19788A (da) 1988-07-19
GR3004392T3 (enrdf_load_stackoverflow) 1993-03-31
ATE74861T1 (de) 1992-05-15
DK19788D0 (da) 1988-01-18
EP0280024A1 (de) 1988-08-31

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