EP0738663A1 - Capuchon de fermeture - Google Patents

Capuchon de fermeture Download PDF

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Publication number
EP0738663A1
EP0738663A1 EP95106019A EP95106019A EP0738663A1 EP 0738663 A1 EP0738663 A1 EP 0738663A1 EP 95106019 A EP95106019 A EP 95106019A EP 95106019 A EP95106019 A EP 95106019A EP 0738663 A1 EP0738663 A1 EP 0738663A1
Authority
EP
European Patent Office
Prior art keywords
closure cap
webs
web
flank
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.)
Granted
Application number
EP95106019A
Other languages
German (de)
English (en)
Other versions
EP0738663B1 (fr
Inventor
Karl-Heinz Rosenthal
Filip Norbert
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.)
AptarGroup SAS
Original Assignee
AptarGroup SAS
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 AptarGroup SAS filed Critical AptarGroup SAS
Priority to EP19950106019 priority Critical patent/EP0738663B1/fr
Publication of EP0738663A1 publication Critical patent/EP0738663A1/fr
Application granted granted Critical
Publication of EP0738663B1 publication Critical patent/EP0738663B1/fr
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
    • 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
    • B65D41/0471—Threaded or like caps or cap-like covers secured by rotation with means for positioning the cap on the container, or for limiting the movement of the cap, or for preventing accidental loosening of the cap
    • 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

Definitions

  • the invention relates to a closure cap for a threaded opening provided with a container opening, wherein the closure cap has a thread groove for guided recording on the threading screw in a screw-like movement of the closure cap relative to the container opening.
  • Such caps serve in particular for closing containers in which perishable contents, such as food or cosmetic products, are received.
  • By the screw is to ensure that a repeated, the container opening sealing closing after any frequent content removal from the container is possible.
  • the invention has for its object to provide a cap of the type mentioned above, which allows a secure sealing of the container opening even with repeated closing a container opening.
  • the cap according to the invention is provided with a thread groove for receiving the arranged on the container opening threaded bead, which is limited in width by at least one elastic edge web.
  • the width of the thread groove is dimensioned smaller than the thickness of the thread bead, and mutually opposite edge webs of adjacent Gewindenut réelle are arranged at a distance from each other.
  • an additional self-locking effect of the thread groove is produced by dividing the thread cord of conventional screw thread into an upper and a lower flank web and forming at least one flank web elastically.
  • at least one edge web is spread by the thread bead on the container neck relative to the other edge web either together with this or alone.
  • a spring force is generated which causes a corresponding frictional force in the contact surface between the thread ridge and the flank webs, which causes the additional self-locking.
  • the distance between opposing flank webs of adjacent thread grooves ensures that there is sufficient space for elastic deformation of the flank webs and no plastic deformation of the flank webs occurs.
  • both flank webs of a thread groove are elastic and of matching cross-section.
  • flank webs delimiting a thread groove have a different cross-section.
  • one flank web may be relatively rigid while the other flank web is flexurally elastic.
  • the distance of the opposing flank webs between adjacent Gewindenut may be relatively rigid so that the relatively flexible flank web can be supported on deflection on the relatively rigid flank web.
  • flank webs are designed to have different lengths, as this can define areas in which the clamping effect the thread groove due to the spreading of the flank webs is not or only partially available. If such a different length configuration of the flank webs adjacent to a closure cap opening is provided such that a flank of the thread groove ends in front of the other flank web, screwing the cap on the container opening is facilitated depending on the difference in length of the flank webs at least in the first thread turn.
  • a seal for sealing support on the container opening may be arranged on the inside of the closure cap opening opposite the closure cap opening.
  • Fig. 1 shows a closure cap 10 which is partially screwed onto a container neck 11.
  • the closure cap 10 has a cylindrical cap jacket 12, which merges opposite a closure cap opening 13 into a top wall 14.
  • a sealing washer 16 is inserted in a recess 15 on the underside of the top wall 14.
  • the sealing disc 16 may also serve a kugelkalottenförmiger projection or plug on the underside of the top wall 14 as a seal.
  • the cap casing 12 is provided on the inside with a thread groove 17 which serves to receive a threaded bead 18 arranged on the outside of the container neck 11.
  • the thread groove 17 is limited in its width B by an upper and a lower edge web 19, 20, which replace a conventional, one-piece threaded cord.
  • Fig. 1 shows two threads of the thread groove 17 in section. Between the flank webs 19 and 20 of the adjacent threads there is a distance a.
  • Figs. 1 and 5 From an overall view of Figs. 1 and 5 shows that the cap 10 is screwed in the Aufschraubphase shown in Fig. 1 over a revolution on the threaded bead 18 of the container neck 11. This results from a relation to a width b of the threaded bead 18 smaller width B of the thread groove 17 which receives a portion of the threaded bead 18, a spread between the upper and lower edge webs 19, 20, so that at least one edge web is deflected.
  • Fig. 2 shows the cap 10 in the screwed end position, so that the threaded bead 18 has penetrated completely in the thread 17 (Fig. 1). From Fig. 2 it is also seen that the spread of the flank webs 19, 20 is correspondingly far advanced, so that now the thread ridge 18 in the thread groove 17 of the cap 10, except for about the first half of the lower end 27 of the threaded bead 18 was added is.
  • the closure cap 10 the sealing disc 16 is sealingly against an end-side opening edge 28 of the container neck 11. Due to the screwing of the closure cap 10 with the container neck 11, an axial sealing force 29 is exerted on the sealing disc 16 in the direction of the central axis of the container neck 11.
  • This sealing force 29 is held in equilibrium by an oppositely acting axial component 30 of the frictional force caused by the elastic restoring forces of the flank webs 19, 20 in the contact surface with the threaded bead 18.
  • the force acting on the thread bead 18 elastic restoring forces prevent the flank webs 19, 20 an automatic release of the cap 10 on the container neck 11th
  • Figs. 3 and 4 correspond in their representation to Figs. 1 and 2 and show a closure cap 31, the upper edge web 19 and lower edge web 32 are formed differently. Otherwise, in FIGS. 1 and 2, the same parts have the same reference numerals. Notwithstanding the edge web 20 (FIGS. 1, 2 and 5), the flank web 32 has an enlarged cross-section with respect to the edge web 19 and is thus more rigid. This leads, as shown in FIGS. 3 and 4 for different Aufschraubphasen that only the upper, bending softer, in cross-section thinner edge web 19 is deflected by the Gewindewulst 18 and the lower, more rigid, thicker cross-section edge web 32 at a spread the flank webs 19, 32 remains substantially undeformed by the threaded bead 18.
  • a distance d between the upper edge web 19 and the lower edge web 32 is dimensioned so that the bending softer edge web 19 can be supported on the more rigid edge web 32.
  • the thread groove 17 in the embodiment of the closure cap 31 shown in FIGS. 3, 4 and 6 is able to absorb particularly high screw forces and thus produce correspondingly high sealing forces 29.
EP19950106019 1995-04-21 1995-04-21 Capuchon de fermeture Expired - Lifetime EP0738663B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP19950106019 EP0738663B1 (fr) 1995-04-21 1995-04-21 Capuchon de fermeture

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP19950106019 EP0738663B1 (fr) 1995-04-21 1995-04-21 Capuchon de fermeture

Publications (2)

Publication Number Publication Date
EP0738663A1 true EP0738663A1 (fr) 1996-10-23
EP0738663B1 EP0738663B1 (fr) 1999-02-24

Family

ID=8219197

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19950106019 Expired - Lifetime EP0738663B1 (fr) 1995-04-21 1995-04-21 Capuchon de fermeture

Country Status (1)

Country Link
EP (1) EP0738663B1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2339771A (en) * 1998-07-18 2000-02-09 Rexam Containers Ltd Closure and container neck combination with deformable screw thread
FR2946028A1 (fr) * 2009-05-26 2010-12-03 Oreal Element d'embouchure pour un recipient, destine a etre visse avec un element d'embouchure complementaire du recipient.

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1399727A (fr) * 1964-04-09 1965-05-21 J P Grussen Ets Nouvelle capsule à double filetage
FR2329529A1 (fr) * 1975-10-29 1977-05-27 Giraud Gallaire Ets Capsules de bouchage pour recipients a goulot filete
US4125201A (en) * 1976-11-25 1978-11-14 U.M.P. Plastics Limited Closure cap
DE4340229A1 (de) * 1993-11-25 1995-06-14 Innocos Gmbh Verschlußkappe

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1399727A (fr) * 1964-04-09 1965-05-21 J P Grussen Ets Nouvelle capsule à double filetage
FR2329529A1 (fr) * 1975-10-29 1977-05-27 Giraud Gallaire Ets Capsules de bouchage pour recipients a goulot filete
US4125201A (en) * 1976-11-25 1978-11-14 U.M.P. Plastics Limited Closure cap
DE4340229A1 (de) * 1993-11-25 1995-06-14 Innocos Gmbh Verschlußkappe

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2339771A (en) * 1998-07-18 2000-02-09 Rexam Containers Ltd Closure and container neck combination with deformable screw thread
FR2946028A1 (fr) * 2009-05-26 2010-12-03 Oreal Element d'embouchure pour un recipient, destine a etre visse avec un element d'embouchure complementaire du recipient.

Also Published As

Publication number Publication date
EP0738663B1 (fr) 1999-02-24

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