EP0366198A1 - Originalitätsverschluss - Google Patents

Originalitätsverschluss Download PDF

Info

Publication number
EP0366198A1
EP0366198A1 EP89202672A EP89202672A EP0366198A1 EP 0366198 A1 EP0366198 A1 EP 0366198A1 EP 89202672 A EP89202672 A EP 89202672A EP 89202672 A EP89202672 A EP 89202672A EP 0366198 A1 EP0366198 A1 EP 0366198A1
Authority
EP
European Patent Office
Prior art keywords
sealing ring
screw cap
connections
breaking
container
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
EP89202672A
Other languages
English (en)
French (fr)
Other versions
EP0366198B1 (de
Inventor
Wiebren Durk Halbe Kornelis
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.)
Kornelis' Kunsthars Producten Industrie BV
Kornelis Kunsthars Producten Industrie BV
Original Assignee
Kornelis' Kunsthars Producten Industrie BV
Kornelis Kunsthars Producten Industrie BV
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 Kornelis' Kunsthars Producten Industrie BV, Kornelis Kunsthars Producten Industrie BV filed Critical Kornelis' Kunsthars Producten Industrie BV
Priority to AT89202672T priority Critical patent/ATE94833T1/de
Publication of EP0366198A1 publication Critical patent/EP0366198A1/de
Application granted granted Critical
Publication of EP0366198B1 publication Critical patent/EP0366198B1/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
    • 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
    • B65D41/34—Threaded or like caps or cap-like covers provided with tamper elements formed in, or attached to, the closure skirt
    • B65D41/3461—Threaded or like caps or cap-like covers provided with tamper elements formed in, or attached to, the closure skirt the tamper element being retracted by heat or by heat and pressure
    • B65D41/3466—Threaded or like caps or cap-like covers provided with tamper elements formed in, or attached to, the closure skirt the tamper element being retracted by heat or by heat and pressure and being integrally connected to the closure by means of bridges

Definitions

  • the invention relates to a closure, comprising: - a container with an opening; a substantially cylindrical wall portion adjoining this opening; at least one screw thread present on the outside thereof, and a locking collar present on the side of this screw thread facing away from the opening; - a plastic screw cap consisting of one whole and manufactured by injection moulding and having internal screw thread for co-action with the thread present on the container; a sealing ring shrunk by heating and gripping be­neath the locking collar; a number of connections in spread positions between the sealing ring and an inside lower edge zone of the screw cap; a protective edge extending over at least a portion of the connections.
  • Such a closure is known in many embodiments. It is usual for the connections to consist of thin material bridges. These have the drawback that they shrink more rapidly than the sealing ring in the processing phase in which the sealing ring undergoes shortening through the application of heat. As a consequence the axial shortening of the material bridges can then become so great that the sealing ring is fused to the bottom edge of the screw cap. This makes it difficult for the consumer to break the sealing, while it can even occur that the sealing is not broken at all, thus enabling unauthor­ized opening.
  • the invention has for its object to embody a closure such that this drawback of the known art no longer occurs.
  • the invention further proposes to make it possible using existing heat treatment devices for performing of the shrinking process (for instance those which are used in the case of for example 28 mm MCA-closures of polyethylene) to embody a break-in proof closure in for instance polypropylene on wide-mouthed containers, that is, containers with an open­ing diameter from circa 43 mm of for instance glass or PET.
  • existing heat treatment devices for performing of the shrinking process for instance those which are used in the case of for example 28 mm MCA-closures of polyethylene
  • a break-in proof closure in for instance polypropylene on wide-mouthed containers that is, containers with an open­ing diameter from circa 43 mm of for instance glass or PET.
  • each connection comprises: a bridge portion moulded onto the sealing ring on the top side and having radial and axial dimensions in the same order of magnitude as those of the sealing ring; and a breaking portion extending between that bridge portion and the inside lower edge zone of the screw cap and having a smaller cross-sectional surface area than the bridge portion, which breaking portions are covered off by the pro­tective edge, whereby, prior to the shrinking process and after the screwing of the screw cap into position on the container the sealing ring is situated on an axial position relative to the locking collar such that during shrinking of the sealing ring under the influence of localised temporary heat supply the shrinking forces thereby occurring cause a tensile stress in the connections such that the breaking portions undergo a stretching with associated cross-sectional surface area reduc­tion.
  • Achieved as a result of the dimensioning and placing of the breaking portions is that only a part of the locally and temporarily applied heat reaches the thin breaking por­tions, which results in the sealing ring and the bridge por­tions being shrunk before the breaking portions melt, which would result in at least partial breakage of the sealing ring during the shrinkage process.
  • a second advantage is that after opening of the container with breakage of the connec­tions the sharp points left over from the breaking portions lie hidden behind the protective edge so that there need be no fear of risk of injury to the consumer.
  • the breaking pieces and the sealing ring are placed inwardly relative to the lower edge zone of the screw cap. The breaking piece protrudes slightly outward.
  • the sealing ring lies compara­tively close to the container, so that the heating time re­mains limited; because of this dimensioning the sealing ring has in any case to shrink less in order to come beneath the edge of the locking collar of the container. Because of this limited shrink time the thermal loading on the sealing ring is limited. A higher thermal loading could make the sealing ring brittle, with the result that it could break sooner than the breaking pieces. Such a manner of breaking gives a less clearly visible breakage of the sealing. This limited thermal loading also makes it possible to employ plastic containers, for instance of PET. Such containers could deform badly in the case of a too high thermal loading.
  • the portion with the largest diameter of the locking collar lies approximately at the same position as the top side of the bridge portions without being in engagement there­with.
  • the distribution of the connections over the peri­phery is partly determined by the diameter of the closure.
  • the force required to break the sealing is relatively great and there is the danger that an inadequate breakage will result.
  • the stability of the sealing ring is small during the heating which could cause a sagging of the ring when heating takes place and an insufficient sealing.
  • connections are placed relative to a multi-start screw thread of the screw cap such that the lowest end of the screw thread is situated between the connec­tions. It is the case with a multi-start screw thread that the screw cap wall is constrained outward at the end of a thread, which would result in the sealing ring also being pulled outward if a connection were present at this position. This could cause a less good shrinkage under the locking collar.
  • Fig. 1 shows a container 1 such as a jam jar.
  • This container comprises an opening 2, a substantially cylindrical wall part 3 adjoining this opening and having a number of screw threads 4 and present thereunder an annular locking collar 5.
  • the container 1 can be closed by means of a cover or screw cap 6 which consists of a plastic and is manufactured as one whole by injection moulding.
  • the cover 5 comprises internal screw thread 7 for co-action with the external screw threads 4 of container 1, a sealing ring 8 which serves for co-action with the locking collar 5, as will be further de­scribed later, a number of connections 9 placed distributed along the periphery between the sealing ring 8 and an inside lower edge zone 10 (see fig. 2-5) of the screw cap; an exter­nal protective edge 11 extending over a part of the connec­tions 9 to be described later.
  • connections being that part of the closure to which the invention relates, each comprise: a bridge portion 12 moulded onto the top side of the sealing ring 8 and having radial and axial dimensions in the same order of magnitude as those of the sealing ring 8; and a breaking portion 13 extending between that bridge por­tion 12 and the inside lower edge zone 10 of cover 8, which part 13 has a smaller cross-sectional surface area than bridge portion 12.
  • the breaking portions 13 are covered off by the protective edge 11.
  • Fig. 5 shows in more detail a number of features of this embodiment, to which the invention is not limited. Also indicated in this figure by way of example are several dimen­sions in mm. As can be seen from the figure, each breaking portion 13 also extends as a rib over at least a considerable part of the outer surface of the associated bridge portion 12.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Closures For Containers (AREA)
  • Cartons (AREA)
EP89202672A 1988-10-25 1989-10-20 Originalitätsverschluss Expired - Lifetime EP0366198B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT89202672T ATE94833T1 (de) 1988-10-25 1989-10-20 Originalitaetsverschluss.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL8802618A NL8802618A (nl) 1988-10-25 1988-10-25 Garantiesluiting.
NL8802618 1988-10-25

Publications (2)

Publication Number Publication Date
EP0366198A1 true EP0366198A1 (de) 1990-05-02
EP0366198B1 EP0366198B1 (de) 1993-09-22

Family

ID=19853107

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89202672A Expired - Lifetime EP0366198B1 (de) 1988-10-25 1989-10-20 Originalitätsverschluss

Country Status (5)

Country Link
EP (1) EP0366198B1 (de)
AT (1) ATE94833T1 (de)
DE (1) DE68909363T2 (de)
ES (1) ES2044066T3 (de)
NL (1) NL8802618A (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005056413A1 (en) * 2003-12-12 2005-06-23 Jan Petrus Human Tamper evident closures for containers
WO2014106002A1 (en) * 2012-12-27 2014-07-03 Ge Healthcare As Tamper-evident container cap assembly
CN109689520A (zh) * 2016-09-30 2019-04-26 大王制纸株式会社 湿片材收纳容器

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU531254A (en) * 1954-12-08 1955-06-09 Dunlop Rubber Company Limited Hydraulic braking system
GB1254930A (en) * 1968-03-30 1971-11-24 Ciba Geigy Ag Pilferproof closure
FR2421119A1 (fr) * 1978-03-28 1979-10-26 Captocap Ltd Bouchon inviolable en matiere plastique

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU531254A (en) * 1954-12-08 1955-06-09 Dunlop Rubber Company Limited Hydraulic braking system
GB1254930A (en) * 1968-03-30 1971-11-24 Ciba Geigy Ag Pilferproof closure
FR2421119A1 (fr) * 1978-03-28 1979-10-26 Captocap Ltd Bouchon inviolable en matiere plastique

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005056413A1 (en) * 2003-12-12 2005-06-23 Jan Petrus Human Tamper evident closures for containers
WO2014106002A1 (en) * 2012-12-27 2014-07-03 Ge Healthcare As Tamper-evident container cap assembly
CN104968575A (zh) * 2012-12-27 2015-10-07 通用电气医疗集团股份有限公司 显擅动容器盖组件
CN104968575B (zh) * 2012-12-27 2019-07-16 通用电气医疗集团股份有限公司 显擅动容器盖组件
US10913580B2 (en) 2012-12-27 2021-02-09 Ge Healthcare As Tamper-evident container cap assembly
CN109689520A (zh) * 2016-09-30 2019-04-26 大王制纸株式会社 湿片材收纳容器
CN109689520B (zh) * 2016-09-30 2020-09-29 大王制纸株式会社 湿片材收纳容器
US11197590B2 (en) 2016-09-30 2021-12-14 Daio Paper Corporation Wet sheet storage container

Also Published As

Publication number Publication date
ATE94833T1 (de) 1993-10-15
ES2044066T3 (es) 1994-01-01
DE68909363D1 (de) 1993-10-28
NL8802618A (nl) 1990-05-16
EP0366198B1 (de) 1993-09-22
DE68909363T2 (de) 1994-01-13

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